When to plant Spinach in Marathon County, Wisconsin, United States
Spinach can be planted after May 12, when air temperature is consistently in a range between 20°F and 80°F and soil temperature is above 45°F.
Growing Spinach in Marathon County
Days suitable for growing Spinach in Marathon County, Wisconsin
Spinach needs on average between 45 and 75 days to mature and produce harvest.
Marathon County has 2 distinct seasons suitable for growing Spinach
May 12 to July 03
This Spinach growing season in Marathon County is quite short, with only 53 days suitable for growth so it is really important to time your planting activities, and choose varieties with shorter time to harvest requirements.
July 20 to October 14
Spinach needs on average between 45 and 75 days to mature and produce harvest. With 87 suitable for growht, you can expect good harvest without too much effort if all planting activities are done in timely manner.
Planting Spinach in Marathon County before May 12 without any additional protection is not advised because cold streaks can damage or kill off young plant.
Growing season extention
In order to maximize chances for a good harvest of Spinach in Marathon 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.
Marathon County has 2 distinct seasons for growing Spinach
In order to get plants ready for May 12 seeds should be started indoors bwetween April 15 and April 19
Seeds started after April 19 are not likely to mature and produce harvest.
This Spinach growing season in Marathon County is quite short, with only 53 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 July 20 seeds should be started indoors bwetween June 23 and July 31
Seeds started after July 31 are not likely to mature and produce harvest.
Spinach needs on average between 45 and 75 days to mature and produce harvest. With 87 suitable for growth, you can expect good harvest without too much effort if all planting activities are done in timely manner.
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 | 155 |
| Last frost expected date | May 13 |
| First frost expected date | October 15 |
| Dates with ideal conditions | May 23 May 25 to May 26 (2 days) May 29 to June 03 (6 days) June 06 to June 08 (3 days) June 11 to June 16 (6 days) June 18 June 21 to June 22 (2 days) June 26 to June 27 (2 days) July 08 July 13 July 16 to July 17 (2 days) July 29 to August 01 (4 days) August 04 to August 05 (2 days) August 08 August 12 to August 19 (8 days) August 22 August 26 to September 11 (17 days) September 13 to September 27 (15 days) September 30 to October 04 (5 days) |
| Dates with suitable conditions | May 12 to July 03 (53 days) July 06 to July 18 (13 days) July 20 to October 14 (87 days) |
| Total days ideal for growing Spinach in Marathon County | 80 |
| Total days suitable for growing Spinach in Marathon County | 153 |
| Days needed for Spinach to mature and produce harvest | 45 - 75 |
| Seed can be planted directly into soil | yes |
Notable temperature facts for growing Spinach in Marathon County, Wisconsin
Table with days suitable to grow vegetables in Marathon County, Wisconsin
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 | 13°F to 29°F | -7°F to 38°F | |
| 2 | January 04 - January 10 | 15°F to 29°F | -11°F to 42°F | |
| 3 | January 11 - January 17 | 17°F to 29°F | -13°F to 38°F | |
| 4 | January 18 - January 24 | 11°F to 23°F | -17°F to 34°F | |
| 5 | January 25 - January 31 | 4°F to 19°F | -28°F to 35°F | |
| 6 | February 01 - February 07 | 9°F to 26°F | -18°F to 43°F | |
| 7 | February 08 - February 14 | 7°F to 24°F | -17°F to 42°F | |
| 8 | February 15 - February 21 | 8°F to 27°F | -18°F to 43°F | |
| 9 | February 22 - February 28 | 14°F to 29°F | -5°F to 45°F | |
| 10 | March 01 - March 07 | 16°F to 34°F | -11°F to 47°F | |
| 11 | March 08 - March 14 | 23°F to 39°F | -3°F to 59°F | TRUE |
| 12 | March 15 - March 21 | 26°F to 41°F | 9°F to 58°F | TRUE |
| 13 | March 22 - March 28 | 27°F to 42°F | 11°F to 59°F | TRUE |
| 14 | March 29 - April 04 | 29°F to 45°F | 16°F to 66°F | TRUE |
| 15 | April 05 - April 11 | 36°F to 53°F | 21°F to 73°F | TRUE |
| 16 | April 12 - April 18 | 32°F to 49°F | 10°F to 76°F | TRUE |
| 17 | April 19 - April 25 | 34°F to 52°F | 21°F to 72°F | TRUE |
| 18 | April 26 - May 02 | 37°F to 53°F | 27°F to 76°F | TRUE |
| 19 | May 03 - May 09 | 40°F to 59°F | 29°F to 71°F | TRUE |
| 20 | May 10 - May 16 | 45°F to 64°F | 30°F to 83°F | TRUE |
| 21 | May 17 - May 23 | 48°F to 65°F | 36°F to 76°F | TRUE |
| 22 | May 24 - May 30 | 51°F to 69°F | 36°F to 81°F | TRUE |
| 23 | May 31 - June 06 | 56°F to 74°F | 42°F to 86°F | TRUE |
| 24 | June 07 - June 13 | 55°F to 72°F | 46°F to 86°F | TRUE |
| 25 | June 14 - June 20 | 56°F to 74°F | 46°F to 88°F | TRUE |
| 26 | June 21 - June 27 | 59°F to 75°F | 49°F to 86°F | TRUE |
| 27 | June 28 - July 04 | 62°F to 79°F | 55°F to 85°F | TRUE |
| 28 | July 05 - July 11 | 62°F to 77°F | 52°F to 85°F | TRUE |
| 29 | July 12 - July 18 | 60°F to 76°F | 54°F to 84°F | TRUE |
| 30 | July 19 - July 25 | 62°F to 77°F | 55°F to 86°F | TRUE |
| 31 | July 26 - August 01 | 61°F to 76°F | 51°F to 85°F | TRUE |
| 32 | August 02 - August 08 | 61°F to 76°F | 50°F to 84°F | TRUE |
| 33 | August 09 - August 15 | 59°F to 74°F | 53°F to 81°F | TRUE |
| 34 | August 16 - August 22 | 59°F to 75°F | 54°F to 82°F | TRUE |
| 35 | August 23 - August 29 | 61°F to 76°F | 52°F to 90°F | TRUE |
| 36 | August 30 - September 05 | 57°F to 72°F | 49°F to 91°F | TRUE |
| 37 | September 06 - September 12 | 54°F to 67°F | 39°F to 81°F | TRUE |
| 38 | September 13 - September 19 | 54°F to 69°F | 40°F to 78°F | TRUE |
| 39 | September 20 - September 26 | 54°F to 67°F | 41°F to 78°F | TRUE |
| 40 | September 27 - October 03 | 51°F to 64°F | 36°F to 81°F | TRUE |
| 41 | October 04 - October 10 | 47°F to 60°F | 34°F to 75°F | TRUE |
| 42 | October 11 - October 17 | 42°F to 53°F | 30°F to 69°F | TRUE |
| 43 | October 18 - October 24 | 39°F to 52°F | 26°F to 68°F | TRUE |
| 44 | October 25 - October 31 | 34°F to 46°F | 18°F to 62°F | TRUE |
| 45 | November 01 - November 07 | 34°F to 48°F | 17°F to 66°F | TRUE |
| 46 | November 08 - November 14 | 32°F to 44°F | 9°F to 66°F | TRUE |
| 47 | November 15 - November 21 | 28°F to 38°F | 7°F to 59°F | TRUE |
| 48 | November 22 - November 28 | 25°F to 36°F | 12°F to 49°F | TRUE |
| 49 | November 29 - December 05 | 25°F to 35°F | 12°F to 44°F | TRUE |
| 50 | December 06 - December 12 | 21°F to 32°F | -8°F to 46°F | TRUE |
| 51 | December 13 - December 19 | 19°F to 31°F | -8°F to 57°F | |
| 52 | December 20 - December 26 | 19°F to 30°F | -11°F to 49°F | |
| 53 | December 27 - December 31 | 20°F to 31°F | 3°F to 42°F | TRUE |
Days with suitable temperature for growing Spinach in Marathon County, Wisconsin
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
