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Rel. frost
Last spring frost (0°C) 29 Apr Frost 1 of 10 years · 20 years of data
Frost-free season 205 days 29 Apr – 20 Nov
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
Date Growing timeGrow. time Date Rel. frost Date Rel. frost
Cauliflower
Brassica oleracea (Botrytis-gruppen)
10 – 24 Apr
5-7 wk
29 May
4 wk after
25 Apr
1 wk before
Broccoli
Brassica oleracea (Italica-gruppen)
4 – 18 Apr
4-6 wk
16 May
2 wk after
25 Apr
1 wk before
Chili pepper
Capsicum annuum
Fleece
23 Mar – 20 Apr
8-12 wk
15 Jun
7 wk after
Kale
Brassica oleracea (Curly Kale-gruppen)
15 Feb – 1 Mar
5-7 wk
5 Apr
4 wk before
21 Apr
2 wk before
Cucumber
Cucumis sativus
Fleece
18 – 25 May
3-4 wk
15 Jun
7 wk after
Florence Fennel
Foeniculum vulgare
Fleece
11 – 18 May
4-5 wk
15 Jun
7 wk after
20 May
3 wk after
Butter bean
Phaseolus lunatus
Season too short
7 – 14 May
3-4 wk
4 Jun
5 wk after
Onion
Allium cepa (Cepa-gruppen)
4 Feb – 4 Mar
8-12 wk
29 Apr
Vid frost
12 May
1 wk after
Onion (sets)
Allium cepa (Cepa-gruppen)
12 May
1 wk after
Sweetcorn
Zea mays
Greenhouse
29 Apr – 6 May
3-4 wk
27 May
4 wk after
Chard
Beta vulgaris (Flavescens-gruppen)
1 – 8 May
3-4 wk
29 May
4 wk after
12 May
1 wk after
Carrot
Daucus carota subsp. sativus var. sativus
21 Apr
2 wk before
Cavolo nero
Brassica oleracea (Palm Kale-gruppen)
15 Feb – 1 Mar
5-7 wk
5 Apr
4 wk before
21 Apr
2 wk before
Potato
Solanum tuberosum
5 – 19 May
4-6 wk
16 Jun
7 wk after
7 May
1 wk after
Ornamental Kale
Brassica oleracea (Ornamental-gruppen)
15 Feb – 1 Mar
5-7 wk
5 Apr
4 wk before
25 Apr
1 wk before
Pumpkin
Cucurbita pepo
Fleece
18 – 25 May
3-4 wk
15 Jun
7 wk after
Beetroot
Beta vulgaris (Conditiva-gruppen)
1 – 8 May
3-4 wk
29 May
4 wk after
12 May
1 wk after
Red Cabbage
Brassica oleracea (Red Cabbage-gruppen)
4 – 18 Apr
4-6 wk
16 May
2 wk after
Lettuce
Lactuca sativa
25 Mar – 1 Apr
3-4 wk
22 Apr
1 wk before
25 Apr
1 wk before
Savoy Cabbage
Brassica oleracea (Savoy Cabbage-gruppen)
11 – 25 Mar
4-6 wk
22 Apr
1 wk before
Shallot (bulbs)
Allium cepa (Aggregatum-gruppen)
17 – 31 Mar
2-4 wk
14 Apr
2 wk before
21 Apr
2 wk before
Shallot (sets)
Allium cepa (Aggregatum-gruppen)
25 Apr
1 wk before
Spinach
Spinacia oleracea
17 – 24 Mar
3-4 wk
14 Apr
2 wk before
16 Apr
3 wk before
Sweet potato
Ipomoea batatas
17 – 31 May
4-6 wk
28 Jun
8 wk after
Tomato
Solanum lycopersicum
21 Apr – 5 May
6-8 wk
16 Jun
7 wk after
Tomatillo
Physalis ixocarpa
French bean
Phaseolus vulgaris
19 May – 2 Jun
2-4 wk
16 Jun
7 wk after
9 Jun
5 wk after
White Cabbage
Brassica oleracea (White Cabbage-gruppen)
4 – 18 Apr
4-6 wk
16 May
2 wk after
Pea
Pisum sativum
17 – 24 Mar
3-4 wk
14 Apr
2 wk before
25 Apr
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
Fleece
3 – 17 May
4-6 wk
14 Jun
7 wk after
Lemon balm
Melissa officinalis
18 Feb – 4 Mar
8-10 wk
29 Apr
Vid frost
24 May
3 wk after
Dill
Anethum graveolens
25 Apr
1 wk before
Chives
Allium schoenoprasum
8 – 22 Feb
6-8 wk
5 Apr
4 wk before
25 Apr
1 wk before
Spearmint
Mentha spicata
20 Jan – 17 Feb
8-12 wk
14 Apr
2 wk before
24 May
3 wk after
Coriander
Coriandrum sativum
12 May
1 wk after
Sage
Salvia officinalis
20 Mar – 3 Apr
8-10 wk
29 May
4 wk after
Thyme
Thymus vulgaris
7 – 21 Mar
8-10 wk
16 May
2 wk after
Oregano
Origanum vulgare
10 – 24 Mar
6-8 wk
5 May
1 wk after
24 May
3 wk after
Parsley
Petroselinum crispum
17 Feb – 3 Mar
6-8 wk
14 Apr
2 wk before
25 Apr
1 wk before
Rosemary
Salvia rosmarinus
20 Feb – 20 Mar
10-14 wk
29 May
4 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
18 – 25 May
3-4 wk
15 Jun
7 wk after
Cornflower
Centaurea cyanus
14 Apr
2 wk before
25 Apr
1 wk before
Statice
Limonium sinuatum
7 – 21 Apr
8-10 wk
16 Jun
7 wk after
Sweet William
Dianthus barbatus
17 Feb – 3 Mar
6-8 wk
14 Apr
2 wk before
7 May
1 wk after
Snow-on-the-mountain
Euphorbia marginata
21 Apr – 5 May
6-8 wk
16 Jun
7 wk after
9 Jul
10 wk after
Dahlia
Dahlia × pinnata
16 – 30 Apr
6-8 wk
11 Jun
6 wk after
Dahlia (tubers)
Dahlia × pinnata
16 Apr – 14 May
4-8 wk
11 Jun
6 wk after
24 May
3 wk after
Foxglove
Digitalis purpurea
3 – 17 Feb
8-10 wk
14 Apr
2 wk before
12 May
1 wk after
Busy lizzie
Impatiens walleriana
1 – 29 Apr
8-12 wk
24 Jun
8 wk after
Creeping zinnia
Sanvitalia procumbens
21 Apr – 5 May
6-8 wk
16 Jun
7 wk after
Hyacinth bean
Dolichos lablab
Season too short
4 – 18 May
4-6 wk
15 Jun
7 wk after
Chinese lantern
Physalis alkekengi
20 Mar – 3 Apr
8-10 wk
29 May
4 wk after
Love in a mist
Nigella damascena
25 Apr
1 wk before
Strawflower
Xerochrysum bracteatum
21 Apr – 5 May
6-8 wk
16 Jun
7 wk after
9 Jul
10 wk after
Tall verbena
Verbena bonariensis
6 Mar – 3 Apr
8-12 wk
29 May
4 wk after
Cardoon
Cynara cardunculus
Greenhouse
26 Feb – 26 Mar
8-12 wk
21 May
3 wk after
Regal-foxtail
Ptilotus nobilis
Fleece
23 Mar – 20 Apr
8-12 wk
15 Jun
7 wk after
Globe amaranth
Gomphrena globosa
Fleece
20 Apr – 4 May
6-8 wk
15 Jun
7 wk after
Corn poppy
Papaver rhoeas
25 Apr
1 wk before
Snapdragon
Antirrhinum majus
28 Jan – 25 Feb
8-12 wk
22 Apr
1 wk before
7 May
1 wk after
Flossflower
Ageratum houstonianum
Fleece
6 – 20 Apr
8-10 wk
15 Jun
7 wk after
Sweet pea
Lathyrus odoratus
17 Feb – 10 Mar
5-8 wk
14 Apr
2 wk before
Stock
Matthiola incana
25 Feb – 11 Mar
6-8 wk
22 Apr
1 wk before
12 May
1 wk after
Wormwood
Artemisia absinthium
17 Feb – 3 Mar
6-8 wk
14 Apr
2 wk before
12 May
1 wk after
Mexican sunflower
Tithonia rotundifolia
Fleece
4 – 18 May
4-6 wk
15 Jun
7 wk after
Pansy
Viola × wittrockiana
25 Jan – 8 Feb
8-10 wk
5 Apr
4 wk before
7 May
1 wk after
Petunia
Petunia
24 Mar – 21 Apr
8-12 wk
16 Jun
7 wk after
Scabious
Scabiosa atropurpurea
3 – 17 Apr
6-8 wk
29 May
4 wk after
9 Jun
5 wk after
Zinnia
Zinnia elegans
5 – 19 May
4-6 wk
16 Jun
7 wk after
Common morning glory
Ipomoea purpurea
Fleece
11 – 25 May
3-5 wk
15 Jun
7 wk after
Cosmos
Cosmos bipinnatus
5 – 19 May
4-6 wk
16 Jun
7 wk after
9 Jun
5 wk after
Scarlet milkweed
Asclepias curassavica
Greenhouse
23 Mar – 20 Apr
8-12 wk
15 Jun
7 wk after
Bee balm
Monarda didyma
4 Feb – 4 Mar
8-12 wk
29 Apr
Vid frost
24 May
3 wk after
Yarrow
Achillea millefolium
17 Feb – 3 Mar
6-8 wk
14 Apr
2 wk before
12 May
1 wk after
Safflower
Carthamus tinctorius
14 Apr
2 wk before
25 Apr
1 wk before
Iceland poppy
Papaver nudicaule
8 – 22 Feb
6-8 wk
5 Apr
4 wk before
21 Apr
2 wk before
Bishop's flower
Ammi majus
29 Mar – 12 Apr
4-6 wk
10 May
1 wk after
12 May
1 wk after
Drumsticks
Pycnosorus globosus
Greenhouse
11 – 25 Mar
10-12 wk
3 Jun
5 wk after
Sunflower
Helianthus annuus
19 – 26 May
3-4 wk
16 Jun
7 wk after
24 May
3 wk after
China aster
Callistephus chinensis
21 Apr – 5 May
6-8 wk
16 Jun
7 wk after
9 Jun
5 wk after
Annual phlox
Phlox drummondii
9 – 23 Apr
6-8 wk
4 Jun
5 wk after
9 Jun
5 wk after
Hollyhock
Alcea rosea
17 Feb – 3 Mar
6-8 wk
14 Apr
2 wk before
12 May
1 wk after
Delphinium
Delphinium elatum
21 Feb – 21 Mar
8-12 wk
16 May
2 wk after
24 May
3 wk after
African marigold
Tagetes erecta
21 Apr – 5 May
6-8 wk
16 Jun
7 wk after
Black-eyed Susan
Rudbeckia hirta
3 – 17 Apr
6-8 wk
29 May
4 wk after
9 Jun
5 wk after
Woodland sage
Salvia nemorosa
24 Feb – 10 Mar
8-10 wk
5 May
1 wk after
24 May
3 wk after
Black-eyed susan vine
Thunbergia alata
Fleece
6 Apr – 4 May
6-10 wk
15 Jun
7 wk after
California goldenpoppy
Eschscholzia californica
25 Apr
1 wk before
Painted tongue
Salpiglossis sinuata
7 – 21 Apr
8-10 wk
16 Jun
7 wk after
Water forget-me-not
Myosotis scorpioides
17 Feb – 3 Mar
6-8 wk
14 Apr
2 wk before
12 May
1 wk after
Current date Soon Date passed