When to plant Spinach in McHenry County, North Dakota, United States
Spinach can be planted after August 21, when air temperature is consistently in a range between 20°F and 80°F and soil temperature is above 45°F.
Growing Spinach in McHenry County
Days suitable for growing Spinach in McHenry County, North Dakota
McHenry County has on average 50 continious days, suitable for growing Spinach. Spinach needs on average between 45 and 75 days to mature and produce harvest.
Growing season for Spinach in McHenry County is quite short, with only 50 continious days suitable for growing, so it is really important to time your planting activities, and choose varieties with shorter time to harvest requirements.
Spinach seeds can be planted between August 21 and August 25. Planting before August 21 without any additional protection is not advised because cold streaks can damage or kill off young plant. When planting after August 25, Spinach will not have enough time to mature and produce harvest.
Growing season extention
In order to maximize chances for a good harvest of Spinach in McHenry County, some extra steps can be taken to extend growing season.
Start seeds indoors
When starting seeds indoors, it is possible to guarantee best possible conditions for young seedlings. Consistent temperature range, adequate watering and ample light (natural, supplemented with artifitial grow lights) will ensure you have strong and healthy seedlings just in time for transplanting into soil.
It takes 27 days on average for Spinach to sprout, and grow big enough to be ready for transplanting.
McHenry County has 2 distinct seasons for growing Spinach
In order to get plants ready for June 05 seeds should be started indoors bwetween May 09 and May 16
Seeds started after May 16 are not likely to mature and produce harvest.
This Spinach growing season in McHenry County is quite short, with only 26 days suitable for growth so it is really important to time your planting activities, and choose varieties with shorter time to harvest requirements.
In order to get plants ready for August 21 seeds should be started indoors bwetween July 25 and July 26
Seeds started after July 26 are not likely to mature and produce harvest.
This Spinach growing season in McHenry County is quite short, with only 50 days suitable for growth so it is really important to time your planting activities, and choose varieties with shorter time to harvest requirements.
Use a cold frame
When using a cold frame in a beggining of growing season You can protect young plants from possible temperature drops, this way growing season can start up to 2 weeks earlier.
Use an additional shading
On days, when air temperatures are expected to raise above 80°F, which is in top of tolerable range for Spinach, consider using additional shading to prevent heat shock.
| Total frost free days | 139 |
| Last frost expected date | May 21 |
| First frost expected date | October 07 |
| Dates with ideal conditions | May 25 May 29 to May 30 (2 days) June 02 June 10 to June 11 (2 days) June 16 June 21 to June 23 (3 days) June 25 September 08 September 14 to September 18 (5 days) September 20 to September 21 (2 days) September 23 to September 24 (2 days) September 26 September 29 |
| Dates with suitable conditions | May 15 to June 03 (20 days) June 05 to June 30 (26 days) July 02 July 04 to July 16 (13 days) July 20 to July 21 (2 days) August 07 August 10 to August 13 (4 days) August 21 to October 09 (50 days) October 12 |
| Total days ideal for growing Spinach in McHenry County | 23 |
| Total days suitable for growing Spinach in McHenry County | 118 |
| Days needed for Spinach to mature and produce harvest | 45 - 75 |
| Seed can be planted directly into soil | no |
| Seed has to be started indoors | yes |
Notable temperature facts for growing Spinach in McHenry County, North Dakota
Table with days suitable to grow vegetables in McHenry County, North Dakota
Tolerable temperature range for Spinach: 20°F to 80°F
| Week | Average temperature | Possible min and max temperature | Suitable for Spinach | |
|---|---|---|---|---|
| 1 | January 01 - January 03 | 11°F to 24°F | -22°F to 41°F | |
| 2 | January 04 - January 10 | 10°F to 23°F | -27°F to 39°F | |
| 3 | January 11 - January 17 | 11°F to 25°F | -24°F to 42°F | |
| 4 | January 18 - January 24 | 6°F to 22°F | -22°F to 38°F | |
| 5 | January 25 - January 31 | 3°F to 19°F | -33°F to 36°F | |
| 6 | February 01 - February 07 | 4°F to 21°F | -25°F to 44°F | |
| 7 | February 08 - February 14 | 2°F to 20°F | -26°F to 43°F | |
| 8 | February 15 - February 21 | 3°F to 21°F | -18°F to 43°F | |
| 9 | February 22 - February 28 | 6°F to 23°F | -22°F to 47°F | |
| 10 | March 01 - March 07 | 15°F to 32°F | -10°F to 53°F | |
| 11 | March 08 - March 14 | 17°F to 34°F | -7°F to 55°F | |
| 12 | March 15 - March 21 | 20°F to 37°F | -5°F to 58°F | TRUE |
| 13 | March 22 - March 28 | 22°F to 41°F | 7°F to 56°F | TRUE |
| 14 | March 29 - April 04 | 25°F to 44°F | 1°F to 68°F | TRUE |
| 15 | April 05 - April 11 | 28°F to 48°F | 10°F to 62°F | TRUE |
| 16 | April 12 - April 18 | 25°F to 41°F | 8°F to 58°F | TRUE |
| 17 | April 19 - April 25 | 30°F to 49°F | 13°F to 70°F | TRUE |
| 18 | April 26 - May 02 | 34°F to 55°F | 13°F to 72°F | TRUE |
| 19 | May 03 - May 09 | 37°F to 58°F | 28°F to 69°F | TRUE |
| 20 | May 10 - May 16 | 41°F to 63°F | 25°F to 78°F | TRUE |
| 21 | May 17 - May 23 | 45°F to 65°F | 31°F to 78°F | TRUE |
| 22 | May 24 - May 30 | 50°F to 69°F | 37°F to 81°F | TRUE |
| 23 | May 31 - June 06 | 53°F to 76°F | 39°F to 96°F | TRUE |
| 24 | June 07 - June 13 | 55°F to 75°F | 46°F to 85°F | TRUE |
| 25 | June 14 - June 20 | 57°F to 76°F | 46°F to 88°F | TRUE |
| 26 | June 21 - June 27 | 55°F to 73°F | 46°F to 86°F | TRUE |
| 27 | June 28 - July 04 | 60°F to 79°F | 52°F to 90°F | TRUE |
| 28 | July 05 - July 11 | 59°F to 76°F | 48°F to 84°F | TRUE |
| 29 | July 12 - July 18 | 60°F to 78°F | 48°F to 89°F | TRUE |
| 30 | July 19 - July 25 | 61°F to 79°F | 53°F to 92°F | TRUE |
| 31 | July 26 - August 01 | 60°F to 80°F | 51°F to 88°F | TRUE |
| 32 | August 02 - August 08 | 60°F to 79°F | 49°F to 92°F | TRUE |
| 33 | August 09 - August 15 | 58°F to 78°F | 51°F to 93°F | TRUE |
| 34 | August 16 - August 22 | 59°F to 79°F | 49°F to 96°F | TRUE |
| 35 | August 23 - August 29 | 57°F to 75°F | 50°F to 86°F | TRUE |
| 36 | August 30 - September 05 | 56°F to 76°F | 46°F to 89°F | TRUE |
| 37 | September 06 - September 12 | 51°F to 70°F | 36°F to 85°F | TRUE |
| 38 | September 13 - September 19 | 52°F to 72°F | 45°F to 81°F | TRUE |
| 39 | September 20 - September 26 | 52°F to 69°F | 38°F to 81°F | TRUE |
| 40 | September 27 - October 03 | 48°F to 64°F | 33°F to 89°F | TRUE |
| 41 | October 04 - October 10 | 44°F to 62°F | 29°F to 82°F | TRUE |
| 42 | October 11 - October 17 | 38°F to 50°F | 22°F to 65°F | TRUE |
| 43 | October 18 - October 24 | 34°F to 48°F | 16°F to 69°F | TRUE |
| 44 | October 25 - October 31 | 28°F to 42°F | 3°F to 59°F | TRUE |
| 45 | November 01 - November 07 | 30°F to 45°F | 12°F to 67°F | TRUE |
| 46 | November 08 - November 14 | 23°F to 36°F | 1°F to 64°F | TRUE |
| 47 | November 15 - November 21 | 24°F to 37°F | 6°F to 52°F | TRUE |
| 48 | November 22 - November 28 | 23°F to 36°F | 10°F to 45°F | TRUE |
| 49 | November 29 - December 05 | 22°F to 34°F | -4°F to 51°F | TRUE |
| 50 | December 06 - December 12 | 14°F to 29°F | -17°F to 49°F | |
| 51 | December 13 - December 19 | 11°F to 25°F | -19°F to 38°F | |
| 52 | December 20 - December 26 | 10°F to 23°F | -19°F to 43°F | |
| 53 | December 27 - December 31 | 8°F to 21°F | -25°F to 41°F |
Days with suitable temperature for growing Spinach in McHenry County, North Dakota
All data is provided “as is” without warranty or any representation of accuracy, timeliness or completeness.
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Average daily temperatures were calculated using
