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Lisbjerg-Terp
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Growing Season: Lisbjerg-Terp

Central Jutland, Denmark

Growing season

Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec 8 Jun
Daylight
10+ h
14+ h
10+ h
25 Feb
16 Apr
28 Aug
17 Oct
234 days
Frost-free
10% frost-free
19 Apr
4 Nov
90% frost risk
199 days
Effective
19 Apr
17 Oct
181 days

The growing season in Lisbjerg-Terp is approximately 181 days and is limited by both frost and daylight.

Last spring frost

The last spring frost normally occurs on 19 Apr in Lisbjerg-Terp. At the earliest, the last frost is over around 31 Mar and at the latest around 29 Apr.

Frost-free probabilityFrost-free prob. Date Grower's risk level Explanation
10% 31 Mar High risk Frost 9 out of 10 years after this date
25% 7 Apr Frost 3 out of 4 years after this date
50% 19 Apr Normal risk Frost every other year after this date
75% 25 Apr Frost 1 out of 4 years after this date
90% 29 Apr 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 Lisbjerg-Terp that is 19 Apr. 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 4 Nov in Lisbjerg-Terp. At the earliest, frost can arrive around 15 Oct and at the latest around 22 Nov.

Frost probabilityFrost prob. Date Grower's risk level Explanation
10% 15 Oct Low risk Frost 1 out of 10 years on or before this date
25% 26 Oct Frost 1 out of 4 years on or before this date
50% 4 Nov Normal risk Frost every other year on or before this date
75% 19 Nov Frost 3 out of 4 years on or before this date
90% 22 Nov 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 Lisbjerg-Terp that is 4 Nov. 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 25 Feb 17 Oct 234
Persephone period 18 Oct 24 Feb 131
Plan the year's last sowing of cold-hardy plants in Lisbjerg-Terp so they are approximately 75% mature by 18 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 25 Feb – 15 Apr 50 Grow long-day plants like spinach, lettuce and coriander.
Longer daylight 14+ h 16 Apr – 27 Aug 134 High risk of bolting
Shorter daylight 10-14 h 28 Aug – 17 Oct 51 Grow long-day plants