Michigan frost dates

As your growing season comes to an end, the nightly temperatures for Sterling, Michigan start to go down, and therefore every day that goes by increases the chance that you'll get frost. Your risk of frost really begins around September 8, and by October 8 you're almost certain to have received at least one frost event.

Michigan frost dates. As your growing season comes to an end, the nightly temperatures for Lincoln Park, Michigan start to go down, and therefore every day that goes by increases the chance that you'll get frost. Your risk of frost really begins around September 26, and by October 24 you're almost certain to have received at least one frost event.

First Fall Frost. Growing Season. BATTLE CREEK KELLOGG AP, MI. 928'. May 6. Oct 13. 159 days. Last and first frost dates are 30% probability. Calculated using 1991-2020 Climate Normals from NOAA.

You have a small 20% chance of getting 32° by September 24. There is a 50% chance of being hit by a 32° frost starting around October 3. You have a 80% chance of seeing 32° by October 11. Said another way, you have a 1 in 5 chance at making it to that day without a 32° night. In the Fall.You have a small 20% chance of getting 32° by September 7. There is a 50% chance of being hit by a 32° frost starting around September 20. You have a 80% chance of seeing 32° by October 2. Said another way, you have a 1 in 5 chance at making it to that day without a 32° night. In the Fall.Effective Monday, March 8, 2021, at 8 a.m ., weight restrictions will be imposed and enforced on all state trunk line highways for the entire state of Michigan, both Upper and Lower Peninsula. State trunk line highways typically carry M, I or US designations. Weight Restriction information and updates may be obtained by calling 1-800-787-8960.A frost date is the average date of the last light freeze in spring or the first light freeze in fall. The classification of freeze temperatures is based on their effect on plants: Light freeze: 29° to 32°F (-1.7° to 0°C)—tender plants are killed. Moderate freeze: 25° to 28°F (-3.9° to -2.2°C)—widely destructive to most vegetation.In Michigan, the recommended time to plant tomatoes outdoors is usually in late spring, around late May to early June. This timing aligns well with the area's last average frost dates which typically occur in the mid to late spring. It is essential to note that these dates are merely averages and can fluctuate yearly.You have a small 20% chance of getting 32° by September 14. There is a 50% chance of being hit by a 32° frost starting around September 26. You have a 80% chance of seeing 32° by October 8. Said another way, you have a 1 in 5 chance at making it to that day without a 32° night. In the Fall.Frost becomes more widespread when the temperature falls below 32°F with some freeze possible. A hard freeze is possible when temperatures fall below 28°F. In the 32F/28F Freeze Maps section, you'll find national and regional maps from the Midwest Regional Climate Center (MRCC) that depict the typical dates for freezes in the early fall, and ... One of the most common business interactions with a county road agency concerns seasonal weight restrictions – sometimes called “frost laws.”. While roads are concrete and asphalt and look indestructible, they can actually be quite fragile in late winter as frost comes out of the ground. Even strong late-winter sunlight on the dark paved ...

A frost date is the average date of the last light freeze in spring or the first light freeze in fall.. The classification of freeze temperatures is based on their effect on plants: Light freeze: 29° to 32°F (-1.7° to 0°C)—tender plants are killed. Moderate freeze: 25° to 28°F (-3.9° to -2.2°C)—widely destructive to most vegetation. Severe freeze: 24°F (-4.4°C) and colder—heavy ...You have a small 20% chance of getting 32° by October 1. There is a 50% chance of being hit by a 32° frost starting around October 10. You have a 80% chance of seeing 32° by October 19. Said another way, you have a 1 in 5 chance at making it to that day without a 32° night. In the Fall.Sep 15. Sep 18. Sep 21. Sep 24. Sep 27. Sep 30. Oct 4. Oct 9. Now that you know your frost dates, use our Garden Planting Calendar for Ravenna, Michigan to know when to sow and transplant your various vegetable plants!Planting times. For winter annual use, crimson clover should be seeded six to eight weeks before the first average frost date. If using a drill, seed at 15-18 pounds per acre; if broadcasting, seed at 22-30 pounds per acre. For summer annual use, plant as soon as the danger of frost is past. Seeding rates are similar to winter seeding rates.Vivian Rivera, Dan Schwager and Michele Lundgren appear in court via Zoom in the Michigan fake elector case, Feb. 13, 2024 | Anna Liz Nichols. New witnesses were called Tuesday in the preliminary hearing for six of the individuals charged by the Michigan attorney general for forging false electoral votes for former President Donald Trump.

Lansing, a typically cold spot in southern Michigan, and Jackson will also likely break latest first frost records. This will definitely be a noteworthy warm fall if the other southern Michigan ...Frost Dates: First and last frost dates for Attica, Michigan. How to read these charts for the spring. As the growing season approaches, the days get longer, the weather begins to warm up, and the nights start being less cold. You're still getting frost, but the chance of nightly frosts gets less and less with each passing day.This big swing can also be seen from East to West as Detroit is listed as April 30 for average last frost. Please note the word AVERAGE here ( view statewide table of …A frost date is the average date of the last light freeze in spring or the first light freeze in fall.. The classification of freeze temperatures is based on their effect on plants: Light freeze: 29° to 32°F (-1.7° to 0°C)—tender plants are killed. Moderate freeze: 25° to 28°F (-3.9° to -2.2°C)—widely destructive to most vegetation. Severe freeze: 24°F (-4.4°C) and colder—heavy ...A frost date is the average date of the last light freeze in spring or the first light freeze in fall.. The classification of freeze temperatures is based on their effect on plants: Light freeze: 29° to 32°F (-1.7° to 0°C)—tender plants are killed. Moderate freeze: 25° to 28°F (-3.9° to -2.2°C)—widely destructive to most vegetation. Severe freeze: 24°F (-4.4°C) and colder—heavy ...

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Welcome to FrostDate.com! You have the internet's largest collection of last frost dates by city. You also have guides for planting each plant in your city, as well as for each zone. Start by choosing your state from the list below. Or you can choose your USDA Zone from the list at the bottom of the page. When to plant seeds based on the last ...As frost melts beneath a paved road, the roadbed turns wet and spongy because water is trapped between the pavement and the remaining ice layer beneath. ... Date when info was last updated; ... including stewardship of the county road right-of-way in Michigan. Contact us. Address: 101 S. Washington Sq., Ste. 200, Lansing, MI 48933 Phone: 517. ...See 2024 Frost Dates for Your Location. What are the 2024 Frost Dates? A frost date is the average date of the last light freeze in spring or the first light freeze in fall. The …You have a small 20% chance of getting 32° by --. There is a 50% chance of being hit by a 32° frost starting around October 22. You have a 80% chance of seeing 32° by --. Said another way, you have a 1 in 5 chance at making it to that day without a 32° night. In the Fall. 1. The USDA Hardiness Zone Method. To find the average frost dates for your region, you first need to determine your hardiness zone or planting zone. You can do this by using our planting zone map tool. Click on your state to zoom in or enter your zip code to find the zone number of your specific area. Frost dates can vary widely within each ... As your growing season comes to an end, the nightly temperatures for Montgomery, Michigan start to go down, and therefore every day that goes by increases the chance that you'll get frost. Your risk of frost really begins around September 24, and by October 15 you're almost certain to have received at least one frost event.

You have a small 20% chance of getting 32° by September 14. There is a 50% chance of being hit by a 32° frost starting around September 21. You have a 80% chance of seeing 32° by September 28. Said another way, you have a 1 in 5 chance at making it to that day without a 32° night. In the Fall. A light frost is when temperatures are between 29°–32°F. During a light frost, tender plants may be killed, with little destructive effect on hardier vegetation. The probability of a frost occurring after the spring date or before the fall frost date listed below is 30%, which means that a frost could occur before or after the dates listed. You have a small 20% chance of getting 32° by October 1. There is a 50% chance of being hit by a 32° frost starting around October 11. You have a 80% chance of seeing 32° by October 21. Said another way, you have a 1 in 5 chance at making it to that day without a 32° night. In the Fall.List of Average Last Frost Dates for Locations in Michigan. Location. Average Last Frost Dates. Adrian. May 21 - May 31. Allen Park. May 11 - May 20. Allendale. May 21 - May 31.A frost date is the average date of the last light freeze in spring or the first light freeze in fall. The classification of freeze temperatures is based on their effect on plants: Light freeze: 29° to 32°F (-1.7° to 0°C)—tender plants are killed. Moderate freeze: 25° to 28°F (-3.9° to -2.2°C)—widely destructive to most vegetation.With it now being late April, it is now time to look at some last/first dates. The readings I will look at are the last hard freeze using 28° the last 32° low and the last 37° low (that is the upper limit for frost) and then the 1 st 70 high and 1 st 75 and 80 high all of which should be reached in the next month.. For the last low of 28 or below the average date at Grand Rapids is April 19 ...Lansing, a typically cold spot in southern Michigan, and Jackson will also likely break latest first frost records. This will definitely be a noteworthy warm fall if the other southern Michigan ...Oct 6. Oct 8. Oct 11. Oct 14. Oct 18. Now that you know your frost dates, use our Garden Planting Calendar for Shelby Township, Michigan to know when to sow and transplant your various vegetable plants!A frost date is the average date of the last light freeze in spring or the first light freeze in fall.. The classification of freeze temperatures is based on their effect on plants: Light freeze: 29° to 32°F (-1.7° to 0°C)—tender plants are killed. Moderate freeze: 25° to 28°F (-3.9° to -2.2°C)—widely destructive to most vegetation. Severe freeze: 24°F (-4.4°C) and colder—heavy ...

Sep 23. Sep 25. Sep 28. Sep 30. Oct 3. Oct 6. Oct 10. Now that you know your frost dates, use our Garden Planting Calendar for Grand Rapids, Michigan to know when to sow and transplant your various vegetable plants!

A frost date is the average date of the last light freeze in spring or the first light freeze in fall. The classification of freeze temperatures is based on their effect on plants: Light freeze: 29° to 32°F (-1.7° to 0°C)—tender plants are killed. Moderate freeze: 25° to 28°F (-3.9° to -2.2°C)—widely destructive to most vegetation.Cream cheese frosting is a delightful addition to any dessert, be it a cake, cupcake, or cookie. Its creamy texture and tangy flavor perfectly complement the sweetness of baked goo...A frost date is the average date of the last light freeze in spring or the first light freeze in fall.. The classification of freeze temperatures is based on their effect on plants: Light freeze: 29° to 32°F (-1.7° to 0°C)—tender plants are killed. Moderate freeze: 25° to 28°F (-3.9° to -2.2°C)—widely destructive to most vegetation. Severe freeze: 24°F (-4.4°C) and colder—heavy ...You have a small 20% chance of getting 32° by September 21. There is a 50% chance of being hit by a 32° frost starting around September 29. You have a 80% chance of seeing 32° by October 8. Said another way, you have a 1 in 5 chance at making it to that day without a 32° night. In the Fall.As your growing season comes to an end, the nightly temperatures for Boyne City, Michigan start to go down, and therefore every day that goes by increases the chance that you'll get frost. Your risk of frost really begins around September 3, and by September 27 you're almost certain to have received at least one frost event.A frost date is the average date of the last light freeze in spring or the first light freeze in fall. Light freeze: 29° to 32°F (-1.7° to 0°C)—tender plants are killed. Moderate freeze: 25° to 28°F (-3.9° to -2.2°C)—widely destructive to most vegetation. Severe freeze: 24°F (-4.4°C) and colder—heavy damage to most garden plants. A frost date is the average date of the last light freeze in spring or the first light freeze in fall. The classification of freeze temperatures is based on their effect on plants: Light freeze: 29° to 32°F (-1.7° to 0°C)—tender plants are killed. Moderate freeze: 25° to 28°F (-3.9° to -2.2°C)—widely destructive to most vegetation. You have a small 20% chance of getting 32° by September 30. There is a 50% chance of being hit by a 32° frost starting around October 8. You have a 80% chance of seeing 32° by October 16. Said another way, you have a 1 in 5 chance at making it to that day without a 32° night. In the Fall.Here are the average last frost dates, average first frost dates, average days in the growing season, and USDA zone for several cities in the United States, Canada, and other parts of the world. United States. State and city Last frost First frost Days Zone. Alabama. Birmingham March 19 November 14 241 7B.

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First Frost Dates were calculated using daily climate data from the period between 1991-2020. Related Pages List of Average First Frost Dates for Locations in MichiganA frost date is the average date of the last light freeze in spring or the first light freeze in fall. Light freeze: 29° to 32°F (-1.7° to 0°C)—tender plants are killed. Moderate freeze: 25° to 28°F (-3.9° to -2.2°C)—widely destructive to most vegetation. Severe freeze: 24°F (-4.4°C) and colder—heavy damage to most garden plants.View Comments. Lansing — Most of the Michigan Republicans who are facing felony charges after signing a certificate falsely claiming Donald Trump won the state's 16 electoral votes in 2020 will ...You have a small 20% chance of getting 32° by September 30. There is a 50% chance of being hit by a 32° frost starting around October 8. You have a 80% chance of seeing 32° by October 16. Said another way, you have a 1 in 5 chance at making it to that day without a 32° night. In the Fall.November 6/March 28. Portland Downtown. November 27/February 24. Troutdale. November 8/March 28. Wilsonville. October 30/April 18. Statistics used to formulate first and last frost dates are drawn from weather data collected from 1981-2010. All data is collected at low elevations.Daisies, delphinium, and dianthus should be started 10 to 12 weeks ahead and can be planted out 1 to 2 weeks before the frost-free date. Asclepias, foxglove, heliopsis, and phlox take 10 to 12 weeks but need to wait until after the last frost to be transplanted. Zinnias are fast-growing annuals that can be started indoors or seeded directly in ...You have a small 20% chance of getting 32° by October 9. There is a 50% chance of being hit by a 32° frost starting around October 20. You have a 80% chance of seeing 32° by October 31. Said another way, you have a 1 in 5 chance at making it to that day without a 32° night. In the Fall.The range of average dates for the FIRST fall frost across most of south central NE and north central KS is between Sep. 24 - Oct. 9. Freeze Freeze occurs when the temperature drops to 32°-or-lower. A freeze will damage many unprotected plants, especially if the temperature remains at-or-below freezing for several hours.As your growing season comes to an end, the nightly temperatures for Hubbardston, Michigan start to go down, and therefore every day that goes by increases the chance that you'll get frost. Your risk of frost really begins around September 18, and by October 14 you're almost certain to have received at least one frost event.First freeze coming soon: See average freeze dates for your closest Michigan city Published: Sep. 21, 2022, 7:43 a.m. This file photo shows frost on a maple leaf on Iroquois Drive in Spring Lake ...Sep 23. Sep 25. Sep 28. Sep 30. Oct 3. Oct 6. Oct 10. Now that you know your frost dates, use our Garden Planting Calendar for Grand Rapids, Michigan to know when to sow and transplant your various vegetable plants!First Fall Frost. Growing Season. DUNDEE, MI. 659'. May 2. Oct 15. 165 days. Last and first frost dates are 30% probability. Calculated using 1991-2020 Climate Normals from NOAA. ….

A frost date is the average date of the last light freeze in spring or the first light freeze in fall. The classification of freeze temperatures is based on their effect on plants: Light freeze: 29° to 32°F (-1.7° to 0°C)—tender plants are killed. Moderate freeze: 25° to 28°F (-3.9° to -2.2°C)—widely destructive to most vegetation. As your growing season comes to an end, the nightly temperatures for Twin Lake, Michigan start to go down, and therefore every day that goes by increases the chance that you'll get frost. Your risk of frost really begins around September 26, and by October 18 you're almost certain to have received at least one frost event.First and Last Frost Dates. A "frost" date means when temperatures fall to 32°F or lower, which is cold enough to damage leaves or kill young, tender plants. In the most basic sense, your "growing season" is essentially the time between when the last freeze happens in spring (your last frost date) and the first time temps get to freezing later ...A frost date is the average date of the last light freeze in spring or the first light freeze in fall. The classification of freeze temperatures is based on their effect on plants: Light freeze: 29° to 32°F (-1.7° to 0°C)—tender plants are killed. Moderate freeze: 25° to 28°F (-3.9° to -2.2°C)—widely destructive to most vegetation.Oct 1. Oct 3. Oct 7. Oct 11. Now that you know your frost dates, use our Garden Planting Calendar for Hemlock, Michigan to know when to sow and transplant your various vegetable plants!You have a small 20% chance of getting 32° by September 21. There is a 50% chance of being hit by a 32° frost starting around September 29. You have a 80% chance of seeing 32° by October 7. Said another way, you have a 1 in 5 chance at making it to that day without a 32° night. In the Fall.A frost date is the average date of the last light freeze in spring or the first light freeze in fall. The classification of freeze temperatures is based on their effect on plants: Light freeze: 29° to 32°F (-1.7° to 0°C)—tender plants are killed. Moderate freeze: 25° to 28°F (-3.9° to -2.2°C)—widely destructive to most vegetation.First Fall Frost. Growing Season. HART 3 WSW, MI. 770'. May 20. Oct 3. 135 days. Last and first frost dates are 30% probability. Calculated using 1991-2020 Climate Normals from NOAA.First Fall Frost. Growing Season. DEARBORN #2, MI. 603'. May 2. Oct 20. 170 days. Last and first frost dates are 30% probability. Calculated using 1991-2020 Climate Normals from NOAA.Powdered sugar, also known as confectioners’ sugar or icing sugar, is a versatile ingredient that can elevate your frosting recipes to a whole new level. Its fine texture and sweet... Michigan frost dates, You have a small 20% chance of getting 32° by October 1. There is a 50% chance of being hit by a 32° frost starting around October 13. You have a 80% chance of seeing 32° by October 24. Said another way, you have a 1 in 5 chance at making it to that day without a 32° night. In the Fall., You have a small 20% chance of getting 32° by August 19. There is a 50% chance of being hit by a 32° frost starting around September 1. You have a 80% chance of seeing 32° by September 13. Said another way, you have a 1 in 5 chance at making it to that day without a 32° night. In the Fall., Last frost date is the average date on which the last frost of the season might occur in a particular area, based on historical data. Last frost date in the spring, and first frost date in the fall, are not definite dates - they are guidelines. For spring planting, some seeds/plants can be put out before the last frost date., You have a small 20% chance of getting 32° by September 26. There is a 50% chance of being hit by a 32° frost starting around October 5. You have a 80% chance of seeing 32° by October 14. Said another way, you have a 1 in 5 chance at making it to that day without a 32° night. In the Fall., Aug 19. Aug 24. Aug 28. Aug 31. Sep 4. Sep 8. Sep 12. Sep 19. Now that you know your frost dates, use our Garden Planting Calendar for Rose City, Michigan to know when to sow and transplant your various vegetable plants!, Sep 20. Sep 22. Sep 24. Sep 26. Sep 29. Oct 3. Now that you know your frost dates, use our Garden Planting Calendar for Battle Creek, Michigan to know when to sow and transplant your various vegetable plants!, Table 1. Dates of first freezing temperatures (32 F or less) in the fall season at selected sites in and near Michigan, 1981-2018. The dates at each site are presented for selected percentiles based on empirical observations: first and last observations, and 10th, 30th, 50th (median or normal), 70th and 90th percentiles., Starting a foundation in the winter or spring is usually not a big deal as long as the footers are poured the day of or day after the hole is excavated. This prevents frost from getting into the soil you will be pouring the concrete on. We usually pour the footer then lay a few courses of block, install the drain tile and tar the wall then ..., First Fall Frost. Growing Season. FARMINGTON, MI. 721'. May 8. Oct 10. 154 days. Last and first frost dates are 30% probability. Calculated using 1991-2020 Climate Normals from NOAA., A frost date is the average date of the last light freeze in spring or the first light freeze in fall. The classification of freeze temperatures is based on their effect on plants: Light freeze: 29° to 32°F (-1.7° to 0°C)—tender plants are killed. Moderate freeze: 25° to 28°F (-3.9° to -2.2°C)—widely destructive to most vegetation., Sep 21. Sep 24. Sep 27. Sep 30. Oct 4. Oct 9. Now that you know your frost dates, use our Garden Planting Calendar for Muskegon, Michigan to know when to sow and transplant your various vegetable plants!, As your growing season comes to an end, the nightly temperatures for Hartford, Michigan start to go down, and therefore every day that goes by increases the chance that you'll get frost. Your risk of frost really begins around October 7, and by October 31 you're almost certain to have received at least one frost event., Powdered sugar, also known as confectioners’ sugar or icing sugar, is a versatile ingredient that can elevate your frosting recipes to a whole new level. Its fine texture and sweet..., Sep 9. Sep 13. Sep 16. Sep 19. Sep 21. Sep 24. Sep 28. Oct 3. Now that you know your frost dates, use our Garden Planting Calendar for Grand Ledge, Michigan to know when to sow and transplant your various vegetable plants!, A frost date is the average date of the last light freeze in spring or the first light freeze in fall. Light freeze: 29° to 32°F (-1.7° to 0°C)—tender plants are killed. Moderate freeze: 25° to 28°F (-3.9° to -2.2°C)—widely destructive to most vegetation. Severe freeze: 24°F (-4.4°C) and colder—heavy damage to most garden plants., First Fall Frost. Growing Season. DUNDEE, MI. 659'. May 2. Oct 15. 165 days. Last and first frost dates are 30% probability. Calculated using 1991-2020 Climate Normals from NOAA., How to read these charts for the fall. As your growing season comes to an end, the nightly temperatures for Menominee, Michigan start to go down, and therefore every day that goes by increases the chance that you'll get frost. Your risk of frost really begins around September 20, and by October 13 you're almost certain to have received at least ..., As your growing season comes to an end, the nightly temperatures for Midland, Michigan start to go down, and therefore every day that goes by increases the chance that you'll get frost. Your risk of frost really begins around September 25, and by October 14 you're almost certain to have received at least one frost event., You have a small 20% chance of getting 32° by September 14. There is a 50% chance of being hit by a 32° frost starting around September 29. You have a 80% chance of seeing 32° by October 15. Said another way, you have a 1 in 5 chance at making it to that day without a 32° night. In the Fall., An interactive map of average last frost dates in michigan and a list of locations in michigan with average last frost dates. In Southern Michigan, The Last Frost Dates Are May 1St To 15, And In. By angela mulka, staff writerfeb 1, 2024., Sep 21. Sep 24. Sep 27. Sep 30. Oct 4. Oct 9. Now that you know your frost dates, use our Garden Planting Calendar for Muskegon, Michigan to know when to sow and transplant your various vegetable plants!, Oct 12. Oct 15. Oct 17. Oct 21. Oct 26. Now that you know your frost dates, use our Garden Planting Calendar for Michigan City, Indiana to know when to sow and transplant your various vegetable plants! , The days in between equal the length of your frost-free growing season. For example, in the illustration above, the town of Adel has a 50% probability of a freeze happening on June 6 and September 17. That means the average last frost is June 6 and the average first frost is September 17, giving me an approximate 102-day growing season., About Frost Maps. Plantmaps maintains Frost data and maps for many regions on the earth. We've created Average First Frost Dates, Average Last Frost Dates and Average Number of days with Frost maps for most US States and Candian Provinces. Plantmaps also created maps for many countries around the world that are in latitudes where frost occurs., A frost date is the average date of the last light freeze in spring or the first light freeze in fall. The classification of freeze temperatures is based on their effect on plants: Light freeze: 29° to 32°F (-1.7° to 0°C)—tender plants are killed. Moderate freeze: 25° to 28°F (-3.9° to -2.2°C)—widely destructive to most vegetation., May 14, 2023 · You have a small 20% chance of getting 32° by September 21. There is a 50% chance of being hit by a 32° frost starting around September 29. You have a 80% chance of seeing 32° by October 7. Said another way, you have a 1 in 5 chance at making it to that day without a 32° night. In the Fall. , Oct 3. Oct 6. Oct 9. Oct 12. Oct 17. Now that you know your frost dates, use our Garden Planting Calendar for Saint Clair, Michigan to know when to sow and transplant your various vegetable plants!, Dew and frost are actually the same phenomenon, except that dew occurs when the air temperature is above freezing while frost occurs when it is below. Both are condensation that oc..., Average First Frost Date Jump to Latest Follow 1K views 1 reply 2 participants last post by Wild Thing Sep 24, 2021, List of Average Last Frost Dates for Locations in Michigan. Location. Average Last Frost Dates. Adrian. May 21 - May 31. Allen Park. May 11 - May 20. Allendale. May 21 - May 31., Sep 25. Sep 28. Sep 30. Oct 3. Oct 6. Oct 10. Now that you know your frost dates, use our Garden Planting Calendar for Howell, Michigan to know when to sow and transplant your various vegetable plants!, A frost date is the average date of the last light freeze in spring or the first light freeze in fall.. The classification of freeze temperatures is based on their effect on plants: Light freeze: 29° to 32°F (-1.7° to 0°C)—tender plants are killed. Moderate freeze: 25° to 28°F (-3.9° to -2.2°C)—widely destructive to most vegetation. Severe freeze: 24°F (-4.4°C) and colder—heavy ..., Daisies, delphinium, and dianthus should be started 10 to 12 weeks ahead and can be planted out 1 to 2 weeks before the frost-free date. Asclepias, foxglove, heliopsis, and phlox take 10 to 12 weeks but need to wait until after the last frost to be transplanted. Zinnias are fast-growing annuals that can be started indoors or seeded directly in ...