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Rel. frost
Last spring frost (0°C) 16 Mar Frost 9 of 10 years · 20 years of data
Frost-free season 227 days 16 Mar – 29 Oct
Probability that frost is over

10% = Half of years are frost-free by this date. More about frost & season →

Custom date

Vegetables

Plant Sow indoors Transplant Direct sow
Date Growing timeGrow. time Date Rel. frost Date Rel. frost
Cauliflower
Brassica oleracea (Botrytis-gruppen)
25 Feb – 11 Mar
5-7 wk
15 Apr
5 wk after
12 Mar
1 wk before
Broccoli
Brassica oleracea (Italica-gruppen)
19 Feb – 5 Mar
4-6 wk
2 Apr
3 wk after
12 Mar
1 wk before
Chili pepper
Capsicum annuum
Fleece
16 Feb – 16 Mar
8-12 wk
11 May
8 wk after
Kale
Brassica oleracea (Curly Kale-gruppen)
2 – 16 Jan
5-7 wk
20 Feb
4 wk before
8 Mar
2 wk before
Cucumber
Cucumis sativus
Fleece
13 – 20 Apr
3-4 wk
11 May
8 wk after
Florence Fennel
Foeniculum vulgare
Fleece
6 – 13 Apr
4-5 wk
11 May
8 wk after
11 Apr
4 wk after
Butter bean
Phaseolus lunatus
Season too short
29 Mar – 5 Apr
3-4 wk
26 Apr
6 wk after
Onion
Allium cepa (Cepa-gruppen)
22 Dec – 19 Jan
8-12 wk
16 Mar
Vid frost
29 Mar
2 wk after
Onion (sets)
Allium cepa (Cepa-gruppen)
Season too short
3 Mar
2 wk before
Sweetcorn
Zea mays
Season too short
21 – 28 Mar
3-4 wk
18 Apr
5 wk after
Chard
Beta vulgaris (Flavescens-gruppen)
18 – 25 Mar
3-4 wk
15 Apr
5 wk after
29 Mar
2 wk after
Carrot
Daucus carota subsp. sativus var. sativus
8 Mar
2 wk before
Cavolo nero
Brassica oleracea (Palm Kale-gruppen)
2 – 16 Jan
5-7 wk
20 Feb
4 wk before
8 Mar
2 wk before
Potato
Solanum tuberosum
Season too short
13 – 27 Jan
4-6 wk
24 Feb
3 wk before
24 Feb
3 wk before
Ornamental Kale
Brassica oleracea (Ornamental-gruppen)
2 – 16 Jan
5-7 wk
20 Feb
4 wk before
12 Mar
1 wk before
Pumpkin
Cucurbita pepo
Fleece
13 – 20 Apr
3-4 wk
11 May
8 wk after
Beetroot
Beta vulgaris (Conditiva-gruppen)
18 – 25 Mar
3-4 wk
15 Apr
5 wk after
29 Mar
2 wk after
Red Cabbage
Brassica oleracea (Red Cabbage-gruppen)
19 Feb – 5 Mar
4-6 wk
2 Apr
3 wk after
Lettuce
Lactuca sativa
9 – 16 Feb
3-4 wk
9 Mar
1 wk before
12 Mar
1 wk before
Savoy Cabbage
Brassica oleracea (Savoy Cabbage-gruppen)
26 Jan – 9 Feb
4-6 wk
9 Mar
1 wk before
Shallot (bulbs)
Allium cepa (Aggregatum-gruppen)
Season too short
1 – 15 Jan
2-4 wk
29 Jan
7 wk before
29 Jan
7 wk before
Shallot (sets)
Allium cepa (Aggregatum-gruppen)
Season too short
10 Feb
5 wk before
Spinach
Spinacia oleracea
1 – 8 Feb
3-4 wk
1 Mar
3 wk before
3 Mar
3 wk before
Sweet potato
Ipomoea batatas
3 – 17 Apr
4-6 wk
15 May
11 wk after
Tomato
Solanum lycopersicum
8 – 22 Mar
6-8 wk
3 May
8 wk after
Tomatillo
Physalis ixocarpa
French bean
Phaseolus vulgaris
5 – 19 Apr
2-4 wk
3 May
8 wk after
26 Apr
6 wk after
White Cabbage
Brassica oleracea (White Cabbage-gruppen)
19 Feb – 5 Mar
4-6 wk
2 Apr
3 wk after
Pea
Pisum sativum
1 – 8 Feb
3-4 wk
1 Mar
3 wk before
12 Mar
1 wk before
Current date Soon Date passed

Herbs

Plant Sow indoors Transplant Direct sow
Date Growing timeGrow. time Date Rel. frost Date Rel. frost
Basil
Ocimum basilicum
Season too short
7 – 21 Mar
4-6 wk
18 Apr
5 wk after
Lemon balm
Melissa officinalis
5 – 19 Jan
8-10 wk
16 Mar
Vid frost
10 Apr
4 wk after
Dill
Anethum graveolens
12 Mar
1 wk before
Chives
Allium schoenoprasum
26 Dec – 9 Jan
6-8 wk
20 Feb
4 wk before
12 Mar
1 wk before
Spearmint
Mentha spicata
7 Dec – 4 Jan
8-12 wk
1 Mar
3 wk before
10 Apr
4 wk after
Coriander
Coriandrum sativum
29 Mar
2 wk after
Sage
Salvia officinalis
4 – 18 Feb
8-10 wk
15 Apr
5 wk after
Thyme
Thymus vulgaris
22 Jan – 5 Feb
8-10 wk
2 Apr
3 wk after
Oregano
Origanum vulgare
25 Jan – 8 Feb
6-8 wk
22 Mar
1 wk after
10 Apr
4 wk after
Parsley
Petroselinum crispum
4 – 18 Jan
6-8 wk
1 Mar
3 wk before
12 Mar
1 wk before
Rosemary
Salvia rosmarinus
7 Jan – 4 Feb
10-14 wk
15 Apr
5 wk after
Current date Soon Date passed

Annual flowers

Plant Sow indoors Transplant Direct sow
Date Growing timeGrow. time Date Rel. frost Date Rel. frost
Morning glory
Ipomoea tricolor
Greenhouse
13 – 20 Apr
3-4 wk
11 May
8 wk after
Cornflower
Centaurea cyanus
1 Mar
3 wk before
12 Mar
1 wk before
Statice
Limonium sinuatum
22 Feb – 8 Mar
8-10 wk
3 May
8 wk after
Sweet William
Dianthus barbatus
4 – 18 Jan
6-8 wk
1 Mar
3 wk before
24 Mar
1 wk after
Snow-on-the-mountain
Euphorbia marginata
8 – 22 Mar
6-8 wk
3 May
8 wk after
26 May
11 wk after
Dahlia
Dahlia × pinnata
3 – 17 Mar
6-8 wk
28 Apr
7 wk after
Dahlia (tubers)
Dahlia × pinnata
Season too short
18 Jan – 15 Feb
4-8 wk
15 Mar
15 Mar
Foxglove
Digitalis purpurea
21 Dec – 4 Jan
8-10 wk
1 Mar
3 wk before
29 Mar
2 wk after
Busy lizzie
Impatiens walleriana
16 Feb – 16 Mar
8-12 wk
11 May
10 wk after
Creeping zinnia
Sanvitalia procumbens
8 – 22 Mar
6-8 wk
3 May
8 wk after
Hyacinth bean
Dolichos lablab
Greenhouse
30 Mar – 13 Apr
4-6 wk
11 May
8 wk after
Chinese lantern
Physalis alkekengi
4 – 18 Feb
8-10 wk
15 Apr
5 wk after
Love in a mist
Nigella damascena
12 Mar
1 wk before
Strawflower
Xerochrysum bracteatum
8 – 22 Mar
6-8 wk
3 May
8 wk after
26 May
11 wk after
Tall verbena
Verbena bonariensis
21 Jan – 18 Feb
8-12 wk
15 Apr
5 wk after
Cardoon
Cynara cardunculus
Fleece
1 Feb – 1 Mar
8-12 wk
26 Apr
6 wk after
Regal-foxtail
Ptilotus nobilis
Fleece
16 Feb – 16 Mar
8-12 wk
11 May
8 wk after
Globe amaranth
Gomphrena globosa
Fleece
16 – 30 Mar
6-8 wk
11 May
8 wk after
Corn poppy
Papaver rhoeas
12 Mar
1 wk before
Snapdragon
Antirrhinum majus
15 Dec – 12 Jan
8-12 wk
9 Mar
1 wk before
24 Mar
1 wk after
Flossflower
Ageratum houstonianum
Fleece
2 – 16 Mar
8-10 wk
11 May
8 wk after
Sweet pea
Lathyrus odoratus
4 – 25 Jan
5-8 wk
1 Mar
3 wk before
Stock
Matthiola incana
12 – 26 Jan
6-8 wk
9 Mar
1 wk before
29 Mar
2 wk after
Wormwood
Artemisia absinthium
4 – 18 Jan
6-8 wk
1 Mar
3 wk before
29 Mar
2 wk after
Mexican sunflower
Tithonia rotundifolia
Fleece
30 Mar – 13 Apr
4-6 wk
11 May
8 wk after
Pansy
Viola × wittrockiana
12 – 26 Dec
8-10 wk
20 Feb
4 wk before
24 Mar
1 wk after
Petunia
Petunia
8 Feb – 8 Mar
8-12 wk
3 May
8 wk after
Scabious
Scabiosa atropurpurea
18 Feb – 4 Mar
6-8 wk
15 Apr
5 wk after
26 Apr
6 wk after
Zinnia
Zinnia elegans
22 Mar – 5 Apr
4-6 wk
3 May
8 wk after
Common morning glory
Ipomoea purpurea
Fleece
6 – 20 Apr
3-5 wk
11 May
8 wk after
Cosmos
Cosmos bipinnatus
22 Mar – 5 Apr
4-6 wk
3 May
8 wk after
26 Apr
6 wk after
Scarlet milkweed
Asclepias curassavica
Greenhouse
16 Feb – 16 Mar
8-12 wk
11 May
8 wk after
Bee balm
Monarda didyma
22 Dec – 19 Jan
8-12 wk
16 Mar
Vid frost
10 Apr
4 wk after
Yarrow
Achillea millefolium
4 – 18 Jan
6-8 wk
1 Mar
3 wk before
29 Mar
2 wk after
Safflower
Carthamus tinctorius
1 Mar
3 wk before
12 Mar
1 wk before
Iceland poppy
Papaver nudicaule
26 Dec – 9 Jan
6-8 wk
20 Feb
4 wk before
8 Mar
2 wk before
Bishop's flower
Ammi majus
13 – 27 Feb
4-6 wk
27 Mar
2 wk after
29 Mar
2 wk after
Drumsticks
Pycnosorus globosus
Fleece
16 Feb – 2 Mar
10-12 wk
11 May
8 wk after
Sunflower
Helianthus annuus
5 – 12 Apr
3-4 wk
3 May
8 wk after
10 Apr
4 wk after
China aster
Callistephus chinensis
8 – 22 Mar
6-8 wk
3 May
8 wk after
26 Apr
6 wk after
Annual phlox
Phlox drummondii
24 Feb – 10 Mar
6-8 wk
21 Apr
6 wk after
26 Apr
6 wk after
Hollyhock
Alcea rosea
4 – 18 Jan
6-8 wk
1 Mar
3 wk before
29 Mar
2 wk after
Delphinium
Delphinium elatum
8 Jan – 5 Feb
8-12 wk
2 Apr
3 wk after
10 Apr
4 wk after
African marigold
Tagetes erecta
8 – 22 Mar
6-8 wk
3 May
8 wk after
Black-eyed Susan
Rudbeckia hirta
18 Feb – 4 Mar
6-8 wk
15 Apr
5 wk after
26 Apr
6 wk after
Woodland sage
Salvia nemorosa
11 – 25 Jan
8-10 wk
22 Mar
1 wk after
10 Apr
4 wk after
Black-eyed susan vine
Thunbergia alata
Fleece
2 – 30 Mar
6-10 wk
11 May
8 wk after
California goldenpoppy
Eschscholzia californica
12 Mar
1 wk before
Painted tongue
Salpiglossis sinuata
22 Feb – 8 Mar
8-10 wk
3 May
8 wk after
Water forget-me-not
Myosotis scorpioides
4 – 18 Jan
6-8 wk
1 Mar
3 wk before
29 Mar
2 wk after
Current date Soon Date passed