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Kaitumjaure Fjällstuga
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Growing Season: Kaitumjaure Fjällstuga

fjällen, fjällkedjan, Sweden
-9.1°
Severe frost tonight at 05:00. Frost temperatures between 01:00 – tomorrow 23:00. Bring in or cover sensitive plants
-5.7°
Last 24h: Moderate frost recorded yesterday at 23:00. Inspect for frost damage

Growing season

Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec 17 Apr
Daylight
10+ h
14+ h
10+ h
7 Mar
6 Apr
6 Sep
7 Oct
214 days
Frost-free
10% frost-free
13 Jun
7 Sep
90% frost risk
86 days
Effective
13 Jun
7 Sep
86 days

The growing season in Kaitumjaure Fjällstuga is approximately 86 days and is limited by frost.

Last spring frost

The last spring frost normally occurs on 13 Jun in Kaitumjaure Fjällstuga. At the earliest, the last frost is over around 3 Jun and at the latest around 23 Jun.

Frost-free probabilityFrost-free prob. Date Grower's risk level Explanation
10% 3 Jun High risk Frost 9 out of 10 years after this date
25% 8 Jun Frost 3 out of 4 years after this date
50% 13 Jun Normal risk Frost every other year after this date
75% 17 Jun Frost 1 out of 4 years after this date
90% 23 Jun Low risk Frost 1 out of 10 years after this date
Growing is often planned around the date when there is a 50% probability that the last spring frost has occurred. In Kaitumjaure Fjällstuga that is 13 Jun. If you want lower frost risk, choose 75% or 90%, i.e. a later date.

First autumn frost

The first autumn frost normally occurs on 7 Sep in Kaitumjaure Fjällstuga. At the earliest, frost can arrive around 22 Aug and at the latest around 22 Sep.

Frost probabilityFrost prob. Date Grower's risk level Explanation
10% 22 Aug Low risk Frost 1 out of 10 years on or before this date
25% 30 Aug Frost 1 out of 4 years on or before this date
50% 7 Sep Normal risk Frost every other year on or before this date
75% 15 Sep Frost 3 out of 4 years on or before this date
90% 22 Sep High risk Frost 9 out of 10 years on or before this date
Growing is often planned around the date when there is a 50% probability that the first autumn frost has occurred. In Kaitumjaure Fjällstuga that is 7 Sep. If you want lower frost risk, choose 10% or 25%, i.e. an earlier date.

Daylight & Persephone Period

Plants need at least 10 hours of daylight to grow actively. The period with under 10 h is called the Persephone period.

From To Number of days
Daylight over 10 h 7 Mar 7 Oct 214
Persephone period 8 Oct 6 Mar 151
Plan the year's last sowing of cold-hardy plants in Kaitumjaure Fjällstuga so they are approximately 75% mature by 8 Oct when daylight drops below 10 h and growth starts to slow.

Daylight periods

Long-day plants like lettuce, spinach and coriander bolt when daylight gets too long. Plan sowing and harvest during periods when daylight is shorter (10-14 h). Early spring or late summer sowing gives the best results.

Season Light Period Days Advice
Shorter daylight 10-14 h 7 Mar – 5 Apr 30 Grow long-day plants like spinach, lettuce and coriander.
Longer daylight 14+ h 6 Apr – 5 Sep 153 High risk of bolting
Shorter daylight 10-14 h 6 Sep – 7 Oct 32 Grow long-day plants