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Rel. frost
Last spring frost (0°C) 8 May Frost 1 of 10 years · 20 years of data
Frost-free season 202 days 8 May – 26 Nov
Probability that frost is over

90% = 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)
Fleece
9 – 23 Apr
5-7 wk
28 May
3 wk after
18 Apr
3 wk before
Broccoli
Brassica oleracea (Italica-gruppen)
16 – 30 Apr
4-6 wk
28 May
3 wk after
2 May
1 wk before
Chili pepper
Capsicum annuum
Fleece
10 Apr – 8 May
8-12 wk
3 Jul
8 wk after
Kale
Brassica oleracea (Curly Kale-gruppen)
18 Feb – 4 Mar
5-7 wk
8 Apr
4 wk before
25 Apr
2 wk before
Cucumber
Cucumis sativus
Fleece
5 – 12 Jun
3-4 wk
3 Jul
8 wk after
Florence Fennel
Foeniculum vulgare
Fleece
29 May – 5 Jun
4-5 wk
3 Jul
8 wk after
3 Jun
4 wk after
Butter bean
Phaseolus lunatus
Greenhouse
21 – 28 May
3-4 wk
18 Jun
6 wk after
Onion
Allium cepa (Cepa-gruppen)
13 Feb – 13 Mar
8-12 wk
8 May
Vid frost
21 May
2 wk after
Onion (sets)
Allium cepa (Cepa-gruppen)
21 May
2 wk after
21 May
2 wk after
Sweetcorn
Zea mays
Fleece
26 May – 2 Jun
3-4 wk
23 Jun
7 wk after
Chard
Beta vulgaris (Flavescens-gruppen)
12 – 19 May
3-4 wk
9 Jun
5 wk after
21 May
2 wk after
Carrot
Daucus carota subsp. sativus var. sativus
25 Apr
2 wk before
Cavolo nero
Brassica oleracea (Palm Kale-gruppen)
18 Feb – 4 Mar
5-7 wk
8 Apr
4 wk before
25 Apr
2 wk before
Potato
Solanum tuberosum
1 – 15 Apr
4-6 wk
13 May
1 wk after
13 May
1 wk after
Ornamental Kale
Brassica oleracea (Ornamental-gruppen)
18 Feb – 4 Mar
5-7 wk
8 Apr
4 wk before
2 May
1 wk before
Pumpkin
Cucurbita pepo
16 – 23 Jun
3-4 wk
14 Jul
10 wk after
Beetroot
Beta vulgaris (Conditiva-gruppen)
12 – 19 May
3-4 wk
9 Jun
5 wk after
21 May
2 wk after
Red Cabbage
Brassica oleracea (Red Cabbage-gruppen)
16 – 30 Apr
4-6 wk
28 May
3 wk after
Lettuce
Lactuca sativa
1 – 8 Apr
3-4 wk
29 Apr
1 wk before
2 May
1 wk before
Savoy Cabbage
Brassica oleracea (Savoy Cabbage-gruppen)
18 Mar – 1 Apr
4-6 wk
29 Apr
1 wk before
Shallot (bulbs)
Allium cepa (Aggregatum-gruppen)
28 Mar – 11 Apr
2-4 wk
25 Apr
2 wk before
25 Apr
2 wk before
Shallot (sets)
Allium cepa (Aggregatum-gruppen)
2 May
1 wk before
2 May
1 wk before
Spinach
Spinacia oleracea
21 – 28 Mar
3-4 wk
18 Apr
3 wk before
18 Apr
3 wk before
Sweet potato
Ipomoea batatas
9 – 23 Jun
4-6 wk
21 Jul
11 wk after
Tomato
Solanum lycopersicum
8 – 22 May
6-8 wk
3 Jul
8 wk after
Tomatillo
Physalis ixocarpa
French bean
Phaseolus vulgaris
5 – 19 Jun
2-4 wk
3 Jul
8 wk after
18 Jun
6 wk after
White Cabbage
Brassica oleracea (White Cabbage-gruppen)
16 – 30 Apr
4-6 wk
28 May
3 wk after
Pea
Pisum sativum
21 – 28 Mar
3-4 wk
18 Apr
3 wk before
2 May
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
12 – 26 May
4-6 wk
23 Jun
7 wk after
Lemon balm
Melissa officinalis
27 Feb – 13 Mar
8-10 wk
8 May
Vid frost
3 Jun
4 wk after
Dill
Anethum graveolens
2 May
1 wk before
Chives
Allium schoenoprasum
11 – 25 Feb
6-8 wk
8 Apr
4 wk before
2 May
1 wk before
Spearmint
Mentha spicata
24 Jan – 21 Feb
8-12 wk
18 Apr
3 wk before
3 Jun
4 wk after
Coriander
Coriandrum sativum
21 May
2 wk after
Sage
Salvia officinalis
31 Mar – 14 Apr
8-10 wk
9 Jun
5 wk after
Thyme
Thymus vulgaris
19 Mar – 2 Apr
8-10 wk
28 May
3 wk after
Oregano
Origanum vulgare
22 Mar – 5 Apr
6-8 wk
17 May
1 wk after
3 Jun
4 wk after
Parsley
Petroselinum crispum
21 Feb – 7 Mar
6-8 wk
18 Apr
3 wk before
2 May
1 wk before
Rosemary
Salvia rosmarinus
3 – 31 Mar
10-14 wk
9 Jun
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
5 – 12 Jun
3-4 wk
3 Jul
8 wk after
Cornflower
Centaurea cyanus
18 Apr
3 wk before
2 May
1 wk before
Statice
Limonium sinuatum
24 Apr – 8 May
8-10 wk
3 Jul
8 wk after
Sweet William
Dianthus barbatus
21 Feb – 7 Mar
6-8 wk
18 Apr
3 wk before
13 May
1 wk after
Snow-on-the-mountain
Euphorbia marginata
8 – 22 May
6-8 wk
3 Jul
8 wk after
21 Jul
11 wk after
Dahlia
Dahlia × pinnata
1 – 15 May
6-8 wk
26 Jun
7 wk after
Dahlia (tubers)
Dahlia × pinnata
8 Apr – 6 May
4-8 wk
3 Jun
4 wk after
3 Jun
4 wk after
Foxglove
Digitalis purpurea
7 – 21 Feb
8-10 wk
18 Apr
3 wk before
21 May
2 wk after
Busy lizzie
Impatiens walleriana
21 Apr – 19 May
8-12 wk
14 Jul
10 wk after
Creeping zinnia
Sanvitalia procumbens
8 – 22 May
6-8 wk
3 Jul
8 wk after
Hyacinth bean
Dolichos lablab
Season too short
22 May – 5 Jun
4-6 wk
3 Jul
8 wk after
Chinese lantern
Physalis alkekengi
31 Mar – 14 Apr
8-10 wk
9 Jun
5 wk after
Love in a mist
Nigella damascena
2 May
1 wk before
Strawflower
Xerochrysum bracteatum
8 – 22 May
6-8 wk
3 Jul
8 wk after
21 Jul
11 wk after
Tall verbena
Verbena bonariensis
17 Mar – 14 Apr
8-12 wk
9 Jun
5 wk after
Cardoon
Cynara cardunculus
Greenhouse
11 Mar – 8 Apr
8-12 wk
3 Jun
4 wk after
Regal-foxtail
Ptilotus nobilis
Fleece
10 Apr – 8 May
8-12 wk
3 Jul
8 wk after
Globe amaranth
Gomphrena globosa
Fleece
8 – 22 May
6-8 wk
3 Jul
8 wk after
Corn poppy
Papaver rhoeas
2 May
1 wk before
Snapdragon
Antirrhinum majus
4 Feb – 4 Mar
8-12 wk
29 Apr
1 wk before
13 May
1 wk after
Flossflower
Ageratum houstonianum
Fleece
24 Apr – 8 May
8-10 wk
3 Jul
8 wk after
Sweet pea
Lathyrus odoratus
21 Feb – 14 Mar
5-8 wk
18 Apr
3 wk before
Stock
Matthiola incana
4 – 18 Mar
6-8 wk
29 Apr
1 wk before
21 May
2 wk after
Wormwood
Artemisia absinthium
21 Feb – 7 Mar
6-8 wk
18 Apr
3 wk before
21 May
2 wk after
Mexican sunflower
Tithonia rotundifolia
Fleece
22 May – 5 Jun
4-6 wk
3 Jul
8 wk after
Pansy
Viola × wittrockiana
28 Jan – 11 Feb
8-10 wk
8 Apr
4 wk before
13 May
1 wk after
Petunia
Petunia
10 Apr – 8 May
8-12 wk
3 Jul
8 wk after
Scabious
Scabiosa atropurpurea
14 – 28 Apr
6-8 wk
9 Jun
5 wk after
18 Jun
6 wk after
Zinnia
Zinnia elegans
22 May – 5 Jun
4-6 wk
3 Jul
8 wk after
Common morning glory
Ipomoea purpurea
Fleece
29 May – 12 Jun
3-5 wk
3 Jul
8 wk after
Cosmos
Cosmos bipinnatus
22 May – 5 Jun
4-6 wk
3 Jul
8 wk after
18 Jun
6 wk after
Scarlet milkweed
Asclepias curassavica
Fleece
21 Apr – 19 May
8-12 wk
14 Jul
10 wk after
Bee balm
Monarda didyma
13 Feb – 13 Mar
8-12 wk
8 May
Vid frost
3 Jun
4 wk after
Yarrow
Achillea millefolium
21 Feb – 7 Mar
6-8 wk
18 Apr
3 wk before
21 May
2 wk after
Safflower
Carthamus tinctorius
18 Apr
3 wk before
2 May
1 wk before
Iceland poppy
Papaver nudicaule
11 – 25 Feb
6-8 wk
8 Apr
4 wk before
25 Apr
2 wk before
Bishop's flower
Ammi majus
11 – 25 Apr
4-6 wk
23 May
2 wk after
21 May
2 wk after
Drumsticks
Pycnosorus globosus
Greenhouse
26 Mar – 9 Apr
10-12 wk
18 Jun
6 wk after
Sunflower
Helianthus annuus
5 – 12 Jun
3-4 wk
3 Jul
8 wk after
3 Jun
4 wk after
China aster
Callistephus chinensis
8 – 22 May
6-8 wk
3 Jul
8 wk after
18 Jun
6 wk after
Annual phlox
Phlox drummondii
23 Apr – 7 May
6-8 wk
18 Jun
6 wk after
18 Jun
6 wk after
Hollyhock
Alcea rosea
21 Feb – 7 Mar
6-8 wk
18 Apr
3 wk before
21 May
2 wk after
Delphinium
Delphinium elatum
5 Mar – 2 Apr
8-12 wk
28 May
3 wk after
3 Jun
4 wk after
African marigold
Tagetes erecta
8 – 22 May
6-8 wk
3 Jul
8 wk after
Black-eyed Susan
Rudbeckia hirta
14 – 28 Apr
6-8 wk
9 Jun
5 wk after
18 Jun
6 wk after
Woodland sage
Salvia nemorosa
8 – 22 Mar
8-10 wk
17 May
1 wk after
3 Jun
4 wk after
Black-eyed susan vine
Thunbergia alata
Fleece
24 Apr – 22 May
6-10 wk
3 Jul
8 wk after
California goldenpoppy
Eschscholzia californica
2 May
1 wk before
Painted tongue
Salpiglossis sinuata
24 Apr – 8 May
8-10 wk
3 Jul
8 wk after
Water forget-me-not
Myosotis scorpioides
21 Feb – 7 Mar
6-8 wk
18 Apr
3 wk before
21 May
2 wk after
Current date Soon Date passed