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Rel. frost
Last spring frost (0°C) 20 Apr Frost 1 of 10 years · 20 years of data
Frost-free season 246 days 20 Apr – 22 Dec
Probability that frost is over

90% = Half of years are frost-free by this date. More about frost & season →

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Vegetables

Plant Sow indoors Transplant Direct sow
Earliest Latest Growing time Earliest Latest Rel. frost Earliest Latest Rel. frost
Cauliflower
Brassica oleracea (Botrytis-gruppen)
Season too short
2 – 16 Mar
12 Jun
5-7 wk
20 Apr
17 Jul
0 wk
11 Apr
7 Jul
1 wk before
Broccoli
Brassica oleracea (Italica-gruppen)
Season too short
9 – 23 Mar
24 Jun
4-6 wk
20 Apr
22 Jul
0 wk
11 Apr
12 Jul
1 wk before
Chili pepper
Capsicum annuum
Greenhouse
13 Feb – 13 Mar
4 May
8-12 wk
8 May
29 Jun
3 wk after
Curly Kale
Brassica oleracea (Curly Kale-gruppen)
Season too short
2 – 16 Mar
7 Jun
5-7 wk
20 Apr
12 Jul
0 wk
4 Apr
2 Jul
2 wk before
Garden cucumber
Cucumis sativus
Fleece
14 – 21 Apr
28 Jun
3-4 wk
12 May
19 Jul
3 wk after
Florence Fennel
Foeniculum vulgare
28 Apr – 5 May
4 Jun
4-5 wk
2 Jun
2 Jul
6 wk after
2 Jun
22 Jun
6 wk after
Butter bean
Phaseolus lunatus
Greenhouse
14 – 21 May
1 Jun
3-4 wk
11 Jun
22 Jun
7 wk after
Onion
Allium cepa (Cepa-gruppen)
Season too short
26 Jan – 23 Feb
28 Mar
8-12 wk
20 Apr
23 May
0 wk
20 Apr
13 May
0 wk
Onion (sets)
Allium cepa (Cepa-gruppen)
Season too short
11 Apr
12 Jun
1 wk before
11 Apr
2 Jun
1 wk before
Maize
Zea mays
Fleece
10 – 17 Apr
18 Jun
3-4 wk
8 May
9 Jul
3 wk after
Swiss Chard
Beta vulgaris (Flavescens-gruppen)
27 Mar – 3 Apr
1 Jul
3-4 wk
24 Apr
22 Jul
1 wk after
3 May
12 Jul
2 wk after
Carrot
Daucus carota subsp. sativus var. sativus
20 Apr
2 Jul
0 wk
20 Apr
22 Jun
0 wk
Palm Kale
Brassica oleracea (Palm Kale-gruppen)
Season too short
2 – 16 Mar
7 Jun
5-7 wk
20 Apr
12 Jul
0 wk
4 Apr
2 Jul
2 wk before
Potato
Solanum tuberosum
Season too short
6 – 20 Mar
4 Jun
4-6 wk
17 Apr
2 Jul
0 wk
17 Apr
22 Jun
0 wk
Ornamental Kale
Brassica oleracea (Ornamental-gruppen)
Season too short
2 – 16 Mar
17 Jun
5-7 wk
20 Apr
22 Jul
0 wk
11 Apr
12 Jul
1 wk before
Pumpkin
Cucurbita pepo
5 – 12 May
3 Jul
3-4 wk
2 Jun
24 Jul
6 wk after
Beetroot
Beta vulgaris (Conditiva-gruppen)
Season too short
23 – 30 Mar
1 Jul
3-4 wk
20 Apr
22 Jul
0 wk
20 Apr
12 Jul
0 wk
Red Cabbage
Brassica oleracea (Red Cabbage-gruppen)
Season too short
9 – 23 Mar
19 Jun
4-6 wk
20 Apr
17 Jul
0 wk
Lettuce
Lactuca sativa
Season too short
23 – 30 Mar
6 Jul
3-4 wk
20 Apr
27 Jul
0 wk
11 Apr
17 Jul
1 wk before
Savoy Cabbage
Brassica oleracea (Savoy Cabbage-gruppen)
Season too short
9 – 23 Mar
19 Jun
4-6 wk
20 Apr
17 Jul
0 wk
Shallot (bulbs)
Allium cepa (Aggregatum-gruppen)
Season too short
7 – 21 Mar
29 May
2-4 wk
4 Apr
12 Jun
2 wk before
4 Apr
2 Jun
2 wk before
Shallot (sets)
Allium cepa (Aggregatum-gruppen)
Season too short
11 Apr
12 Jun
1 wk before
11 Apr
2 Jun
1 wk before
Spinach
Spinacia oleracea
Season too short
23 – 30 Mar
21 Jul
3-4 wk
20 Apr
11 Aug
0 wk
19 Feb
1 Aug
9 wk before
Sweet potato
Ipomoea batatas
15 – 29 May
4-6 wk
26 Jun
10 wk after
Garden tomato
Solanum lycopersicum
Fleece
13 – 27 Mar
28 May
6-8 wk
8 May
9 Jul
3 wk after
Tomatillo
Physalis ixocarpa
Common Bean
Phaseolus vulgaris
14 – 28 Apr
5 Jul
2-4 wk
12 May
19 Jul
3 wk after
2 Jun
9 Jul
6 wk after
White Cabbage
Brassica oleracea (White Cabbage-gruppen)
Season too short
9 – 23 Mar
19 Jun
4-6 wk
20 Apr
17 Jul
0 wk
Garden pea
Pisum sativum
Season too short
23 – 30 Mar
21 Jun
3-4 wk
20 Apr
12 Jul
0 wk
11 Apr
2 Jul
1 wk before

Herbs

Plant Sow indoors Transplant Direct sow
Earliest Latest Growing time Earliest Latest Rel. frost Earliest Latest Rel. frost
Basil
Ocimum basilicum
21 Apr – 5 May
11 Jun
4-6 wk
2 Jun
9 Jul
6 wk after
Lemon balm
Melissa officinalis
Season too short
9 – 23 Feb
17 May
8-10 wk
20 Apr
12 Jul
0 wk
26 Apr
2 Jul
1 wk after
Dill
Anethum graveolens
21 Apr
22 Jul
0 wk
Wild chives
Allium schoenoprasum
Season too short
23 Feb – 9 Mar
31 May
6-8 wk
20 Apr
12 Jul
0 wk
11 Apr
2 Jul
1 wk before
Spearmint
Mentha spicata
Season too short
26 Jan – 23 Feb
17 May
8-12 wk
20 Apr
12 Jul
0 wk
26 Apr
2 Jul
1 wk after
Coriander
Coriandrum sativum
20 Apr
11 Aug
0 wk
3 May
1 Aug
2 wk after
Garden sage
Salvia officinalis
Season too short
9 – 23 Feb
2 May
8-10 wk
20 Apr
27 Jun
0 wk
Common thyme
Thymus vulgaris
Season too short
9 – 23 Feb
7 May
8-10 wk
20 Apr
2 Jul
0 wk
Oregano
Origanum vulgare
Season too short
23 Feb – 9 Mar
21 May
6-8 wk
20 Apr
2 Jul
0 wk
26 Apr
22 Jun
1 wk after
Parsley
Petroselinum crispum
Season too short
23 Feb – 9 Mar
21 May
6-8 wk
20 Apr
2 Jul
0 wk
11 Apr
22 Jun
1 wk before
Rosemary
Salvia rosmarinus
16 Jan – 13 Feb
3 Apr
10-14 wk
24 Apr
12 Jun
1 wk after

Annual flowers

Plant Sow indoors Transplant Direct sow
Earliest Latest Growing time Earliest Latest Rel. frost Earliest Latest Rel. frost
Morning glory
Ipomoea tricolor
5 – 12 May
18 Jun
3-4 wk
2 Jun
9 Jul
6 wk after
Cornflower
Centaurea cyanus
Season too short
20 Apr
12 Jul
0 wk
11 Apr
2 Jul
1 wk before
Statice
Limonium sinuatum
3 – 17 Mar
7 May
8-10 wk
12 May
2 Jul
3 wk after
Sweet William
Dianthus barbatus
23 Feb – 9 Mar
6-8 wk
20 Apr
0 wk
30 Apr
1 wk after
Snow-on-the-mountain
Euphorbia marginata
17 – 31 Mar
21 May
6-8 wk
12 May
2 Jul
3 wk after
26 Jun
10 wk after
Pinnate dahlia
Dahlia × pinnata
15 – 29 Mar
21 May
6-8 wk
10 May
2 Jul
3 wk after
Pinnate dahlia (tubers)
Dahlia × pinnata
Season too short
1 – 29 Mar
4 Jun
4-8 wk
26 Apr
2 Jul
1 wk after
26 Apr
22 Jun
1 wk after
Foxglove
Digitalis purpurea
9 – 23 Feb
8-10 wk
20 Apr
0 wk
3 May
2 wk after
Busy lizzie
Impatiens walleriana
10 Mar – 7 Apr
2 Jul
8-12 wk
2 Jun
27 Aug
6 wk after
Creeping zinnia
Sanvitalia procumbens
17 – 31 Mar
31 May
6-8 wk
12 May
12 Jul
3 wk after
Hyacinth bean
Dolichos lablab
Greenhouse
31 Mar – 14 Apr
15 May
4-6 wk
12 May
12 Jun
3 wk after
Chinese lantern
Physalis alkekengi
13 – 27 Feb
17 Apr
8-10 wk
24 Apr
12 Jun
1 wk after
Love in a mist
Nigella damascena
20 Apr
27 Jun
0 wk
21 Apr
17 Jun
0 wk
Strawflower
Xerochrysum bracteatum
17 – 31 Mar
11 May
6-8 wk
12 May
22 Jun
3 wk after
26 Jun
10 wk after
Purple-top vervain
Verbena bonariensis
30 Jan – 27 Feb
17 Apr
8-12 wk
24 Apr
12 Jun
1 wk after
Cardoon
Cynara cardunculus
17 Feb – 17 Mar
18 Mar
8-12 wk
12 May
13 May
3 wk after
Regal-foxtail
Ptilotus nobilis
10 Mar – 7 Apr
4 May
8-12 wk
2 Jun
29 Jun
6 wk after
Globe amaranth
Gomphrena globosa
7 – 21 Apr
18 May
6-8 wk
2 Jun
29 Jun
6 wk after
Corn poppy
Papaver rhoeas
20 Apr
12 Jul
0 wk
21 Apr
2 Jul
0 wk
Snapdragon
Antirrhinum majus
Season too short
26 Jan – 23 Feb
7 May
8-12 wk
20 Apr
2 Jul
0 wk
17 Apr
22 Jun
0 wk
Flossflower
Ageratum houstonianum
24 Mar – 7 Apr
17 May
8-10 wk
2 Jun
12 Jul
6 wk after
Sweet pea
Lathyrus odoratus
Season too short
23 Feb – 16 Mar
28 May
5-8 wk
20 Apr
2 Jul
0 wk
Stock
Matthiola incana
Season too short
23 Feb – 9 Mar
31 May
6-8 wk
20 Apr
12 Jul
0 wk
20 Apr
2 Jul
0 wk
Wormwood
Artemisia absinthium
Season too short
23 Feb – 9 Mar
1 May
6-8 wk
20 Apr
12 Jun
0 wk
20 Apr
2 Jun
0 wk
Mexican sunflower
Tithonia rotundifolia
Fleece
31 Mar – 14 Apr
30 May
4-6 wk
12 May
27 Jun
3 wk after
Garden pansy
Viola × wittrockiana
Season too short
9 – 23 Feb
17 May
8-10 wk
20 Apr
12 Jul
0 wk
17 Apr
2 Jul
0 wk
Petunia
Petunia
17 Feb – 17 Mar
7 May
8-12 wk
12 May
2 Jul
3 wk after
Sweet Scabious
Scabiosa atropurpurea
27 Feb – 13 Mar
1 May
6-8 wk
24 Apr
12 Jun
1 wk after
2 Jun
2 Jun
6 wk after
Common zinnia
Zinnia elegans
31 Mar – 14 Apr
14 Jun
4-6 wk
12 May
12 Jul
3 wk after
Common morning glory
Ipomoea purpurea
28 Apr – 12 May
18 Jun
3-5 wk
2 Jun
9 Jul
6 wk after
Garden cosmos
Cosmos bipinnatus
31 Mar – 14 Apr
4 Jun
4-6 wk
12 May
2 Jul
3 wk after
2 Jun
22 Jun
6 wk after
Scarlet milkweed
Asclepias curassavica
26 Mar – 23 Apr
3 Jun
8-12 wk
18 Jun
29 Jul
8 wk after
Bee balm
Monarda didyma
Season too short
26 Jan – 23 Feb
17 Apr
8-12 wk
20 Apr
12 Jun
0 wk
26 Apr
2 Jun
1 wk after
Yarrow
Achillea millefolium
Season too short
23 Feb – 9 Mar
1 Apr
6-8 wk
20 Apr
13 May
0 wk
20 Apr
3 May
0 wk
Safflower
Carthamus tinctorius
Season too short
20 Apr
12 Jun
0 wk
11 Apr
2 Jun
1 wk before
Iceland poppy
Papaver nudicaule
Season too short
23 Feb – 9 Mar
21 May
6-8 wk
20 Apr
2 Jul
0 wk
4 Apr
22 Jun
2 wk before
Bishop's flower
Ammi majus
Season too short
9 – 23 Mar
4 Jun
4-6 wk
20 Apr
2 Jul
0 wk
20 Apr
22 Jun
0 wk
Drumsticks
Pycnosorus globosus
10 – 24 Mar
3 Apr
10-12 wk
2 Jun
12 Jun
6 wk after
Sunflower
Helianthus annuus
14 – 21 Apr
11 Jun
3-4 wk
12 May
2 Jul
3 wk after
15 May
22 Jun
4 wk after
China aster
Callistephus chinensis
17 – 31 Mar
31 May
6-8 wk
12 May
12 Jul
3 wk after
2 Jun
2 Jul
6 wk after
Annual phlox
Phlox drummondii
13 – 27 Mar
31 May
6-8 wk
8 May
12 Jul
3 wk after
2 Jun
2 Jul
6 wk after
Hollyhock
Alcea rosea
23 Feb – 9 Mar
6-8 wk
20 Apr
0 wk
3 May
2 wk after
Alpine delphinium
Delphinium elatum
Season too short
26 Jan – 23 Feb
17 Apr
8-12 wk
20 Apr
12 Jun
0 wk
26 Apr
2 Jun
1 wk after
African marigold
Tagetes erecta
17 – 31 Mar
31 May
6-8 wk
12 May
12 Jul
3 wk after
Black-eyed Susan
Rudbeckia hirta
27 Feb – 13 Mar
21 May
6-8 wk
24 Apr
2 Jul
1 wk after
2 Jun
22 Jun
6 wk after
Wood sage
Salvia nemorosa
Season too short
9 – 23 Feb
7 Apr
8-10 wk
20 Apr
2 Jun
0 wk
26 Apr
23 May
1 wk after
Black-eyed susan vine
Thunbergia alata
24 Mar – 21 Apr
28 May
6-10 wk
2 Jun
9 Jul
6 wk after
California goldenpoppy
Eschscholzia californica
20 Apr
12 Jul
0 wk
21 Apr
2 Jul
0 wk
Painted tongue
Salpiglossis sinuata
3 – 17 Mar
7 May
8-10 wk
12 May
2 Jul
3 wk after
Water forget-me-not
Myosotis scorpioides
Season too short
23 Feb – 9 Mar
1 May
6-8 wk
20 Apr
12 Jun
0 wk
20 Apr
2 Jun
0 wk