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Rel. frost
Last spring frost (0°C) 13 May Frost 1 of 10 years · 20 years of data
Frost-free season 187 days 13 May – 16 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
8 – 22 Apr
5-7 wk
27 May
2 wk after
25 Apr
3 wk before
Broccoli
Brassica oleracea (Italica-gruppen)
15 – 29 Apr
4-6 wk
27 May
2 wk after
6 May
1 wk before
Chili pepper
Capsicum annuum
Greenhouse
25 Mar – 22 Apr
8-12 wk
17 Jun
5 wk after
Kale
Brassica oleracea (Curly Kale-gruppen)
28 Feb – 14 Mar
5-7 wk
18 Apr
4 wk before
1 May
2 wk before
Cucumber
Cucumis sativus
Fleece
1 – 8 Jun
3-4 wk
29 Jun
7 wk after
Florence Fennel
Foeniculum vulgare
Greenhouse
13 – 20 May
4-5 wk
17 Jun
5 wk after
23 May
1 wk after
Butter bean
Phaseolus lunatus
Greenhouse
21 – 28 May
3-4 wk
18 Jun
5 wk after
Onion
Allium cepa (Cepa-gruppen)
18 Feb – 18 Mar
8-12 wk
13 May
Vid frost
23 May
1 wk after
Onion (sets)
Allium cepa (Cepa-gruppen)
23 May
1 wk after
23 May
1 wk after
Sweetcorn
Zea mays
Fleece
31 May – 7 Jun
3-4 wk
28 Jun
7 wk after
Chard
Beta vulgaris (Flavescens-gruppen)
14 – 21 May
3-4 wk
11 Jun
4 wk after
23 May
1 wk after
Carrot
Daucus carota subsp. sativus var. sativus
1 May
2 wk before
Cavolo nero
Brassica oleracea (Palm Kale-gruppen)
28 Feb – 14 Mar
5-7 wk
18 Apr
4 wk before
1 May
2 wk before
Potato
Solanum tuberosum
6 – 20 Apr
4-6 wk
18 May
1 wk after
18 May
1 wk after
Ornamental Kale
Brassica oleracea (Ornamental-gruppen)
28 Feb – 14 Mar
5-7 wk
18 Apr
4 wk before
6 May
1 wk before
Pumpkin
Cucurbita pepo
9 – 16 Jun
3-4 wk
7 Jul
8 wk after
Beetroot
Beta vulgaris (Conditiva-gruppen)
14 – 21 May
3-4 wk
11 Jun
4 wk after
23 May
1 wk after
Red Cabbage
Brassica oleracea (Red Cabbage-gruppen)
15 – 29 Apr
4-6 wk
27 May
2 wk after
Lettuce
Lactuca sativa
8 – 15 Apr
3-4 wk
6 May
1 wk before
6 May
1 wk before
Savoy Cabbage
Brassica oleracea (Savoy Cabbage-gruppen)
25 Mar – 8 Apr
4-6 wk
6 May
1 wk before
Shallot (bulbs)
Allium cepa (Aggregatum-gruppen)
3 – 17 Apr
2-4 wk
1 May
2 wk before
1 May
2 wk before
Shallot (sets)
Allium cepa (Aggregatum-gruppen)
6 May
1 wk before
6 May
1 wk before
Spinach
Spinacia oleracea
31 Mar – 7 Apr
3-4 wk
28 Apr
2 wk before
25 Apr
3 wk before
Sweet potato
Ipomoea batatas
9 – 23 Jun
4-6 wk
21 Jul
10 wk after
Tomato
Solanum lycopersicum
4 – 18 May
6-8 wk
29 Jun
7 wk after
Tomatillo
Physalis ixocarpa
French bean
Phaseolus vulgaris
1 – 15 Jun
2-4 wk
29 Jun
7 wk after
18 Jun
5 wk after
White Cabbage
Brassica oleracea (White Cabbage-gruppen)
15 – 29 Apr
4-6 wk
27 May
2 wk after
Pea
Pisum sativum
31 Mar – 7 Apr
3-4 wk
28 Apr
2 wk before
6 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
17 – 31 May
4-6 wk
28 Jun
7 wk after
Lemon balm
Melissa officinalis
4 – 18 Mar
8-10 wk
13 May
Vid frost
3 Jun
3 wk after
Dill
Anethum graveolens
6 May
1 wk before
Chives
Allium schoenoprasum
21 Feb – 7 Mar
6-8 wk
18 Apr
4 wk before
6 May
1 wk before
Spearmint
Mentha spicata
3 Feb – 3 Mar
8-12 wk
28 Apr
2 wk before
3 Jun
3 wk after
Coriander
Coriandrum sativum
23 May
1 wk after
Sage
Salvia officinalis
2 – 16 Apr
8-10 wk
11 Jun
4 wk after
Thyme
Thymus vulgaris
18 Mar – 1 Apr
8-10 wk
27 May
2 wk after
Oregano
Origanum vulgare
24 Mar – 7 Apr
6-8 wk
19 May
1 wk after
3 Jun
3 wk after
Parsley
Petroselinum crispum
3 – 17 Mar
6-8 wk
28 Apr
2 wk before
6 May
1 wk before
Rosemary
Salvia rosmarinus
5 Mar – 2 Apr
10-14 wk
11 Jun
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
1 – 8 Jun
3-4 wk
29 Jun
7 wk after
Cornflower
Centaurea cyanus
28 Apr
2 wk before
6 May
1 wk before
Statice
Limonium sinuatum
Fleece
8 – 22 Apr
8-10 wk
17 Jun
5 wk after
Sweet William
Dianthus barbatus
3 – 17 Mar
6-8 wk
28 Apr
2 wk before
18 May
1 wk after
Snow-on-the-mountain
Euphorbia marginata
Fleece
22 Apr – 6 May
6-8 wk
17 Jun
5 wk after
28 Jun
7 wk after
Dahlia
Dahlia × pinnata
Fleece
16 – 30 Apr
6-8 wk
11 Jun
4 wk after
Dahlia (tubers)
Dahlia × pinnata
8 Apr – 6 May
4-8 wk
3 Jun
3 wk after
3 Jun
3 wk after
Foxglove
Digitalis purpurea
17 Feb – 3 Mar
8-10 wk
28 Apr
2 wk before
23 May
1 wk after
Busy lizzie
Impatiens walleriana
14 Apr – 12 May
8-12 wk
7 Jul
8 wk after
Creeping zinnia
Sanvitalia procumbens
4 – 18 May
6-8 wk
29 Jun
7 wk after
Hyacinth bean
Dolichos lablab
Season too short
18 May – 1 Jun
4-6 wk
29 Jun
7 wk after
Chinese lantern
Physalis alkekengi
2 – 16 Apr
8-10 wk
11 Jun
4 wk after
Love in a mist
Nigella damascena
6 May
1 wk before
Strawflower
Xerochrysum bracteatum
Fleece
22 Apr – 6 May
6-8 wk
17 Jun
5 wk after
28 Jun
7 wk after
Tall verbena
Verbena bonariensis
19 Mar – 16 Apr
8-12 wk
11 Jun
4 wk after
Cardoon
Cynara cardunculus
Season too short
12 Mar – 9 Apr
8-12 wk
4 Jun
3 wk after
Regal-foxtail
Ptilotus nobilis
Greenhouse
25 Mar – 22 Apr
8-12 wk
17 Jun
5 wk after
Globe amaranth
Gomphrena globosa
Greenhouse
22 Apr – 6 May
6-8 wk
17 Jun
5 wk after
Corn poppy
Papaver rhoeas
6 May
1 wk before
Snapdragon
Antirrhinum majus
11 Feb – 11 Mar
8-12 wk
6 May
1 wk before
18 May
1 wk after
Flossflower
Ageratum houstonianum
Fleece
20 Apr – 4 May
8-10 wk
29 Jun
7 wk after
Sweet pea
Lathyrus odoratus
3 – 24 Mar
5-8 wk
28 Apr
2 wk before
Stock
Matthiola incana
11 – 25 Mar
6-8 wk
6 May
1 wk before
23 May
1 wk after
Wormwood
Artemisia absinthium
3 – 17 Mar
6-8 wk
28 Apr
2 wk before
23 May
1 wk after
Mexican sunflower
Tithonia rotundifolia
Greenhouse
6 – 20 May
4-6 wk
17 Jun
5 wk after
Pansy
Viola × wittrockiana
7 – 21 Feb
8-10 wk
18 Apr
4 wk before
18 May
1 wk after
Petunia
Petunia
Fleece
25 Mar – 22 Apr
8-12 wk
17 Jun
5 wk after
Scabious
Scabiosa atropurpurea
16 – 30 Apr
6-8 wk
11 Jun
4 wk after
18 Jun
5 wk after
Zinnia
Zinnia elegans
18 May – 1 Jun
4-6 wk
29 Jun
7 wk after
Common morning glory
Ipomoea purpurea
Fleece
25 May – 8 Jun
3-5 wk
29 Jun
7 wk after
Cosmos
Cosmos bipinnatus
Fleece
6 – 20 May
4-6 wk
17 Jun
5 wk after
3 Jun
3 wk after
Scarlet milkweed
Asclepias curassavica
Fleece
14 Apr – 12 May
8-12 wk
7 Jul
8 wk after
Bee balm
Monarda didyma
18 Feb – 18 Mar
8-12 wk
13 May
Vid frost
3 Jun
3 wk after
Yarrow
Achillea millefolium
3 – 17 Mar
6-8 wk
28 Apr
2 wk before
23 May
1 wk after
Safflower
Carthamus tinctorius
28 Apr
2 wk before
6 May
1 wk before
Iceland poppy
Papaver nudicaule
21 Feb – 7 Mar
6-8 wk
18 Apr
4 wk before
1 May
2 wk before
Bishop's flower
Ammi majus
11 – 25 Apr
4-6 wk
23 May
1 wk after
23 May
1 wk after
Drumsticks
Pycnosorus globosus
Season too short
25 Mar – 8 Apr
10-12 wk
17 Jun
5 wk after
Sunflower
Helianthus annuus
Fleece
20 – 27 May
3-4 wk
17 Jun
5 wk after
23 May
1 wk after
China aster
Callistephus chinensis
Fleece
22 Apr – 6 May
6-8 wk
17 Jun
5 wk after
3 Jun
3 wk after
Annual phlox
Phlox drummondii
22 Apr – 6 May
6-8 wk
17 Jun
5 wk after
18 Jun
5 wk after
Hollyhock
Alcea rosea
3 – 17 Mar
6-8 wk
28 Apr
2 wk before
23 May
1 wk after
Delphinium
Delphinium elatum
4 Mar – 1 Apr
8-12 wk
27 May
2 wk after
3 Jun
3 wk after
African marigold
Tagetes erecta
4 – 18 May
6-8 wk
29 Jun
7 wk after
Black-eyed Susan
Rudbeckia hirta
16 – 30 Apr
6-8 wk
11 Jun
4 wk after
18 Jun
5 wk after
Woodland sage
Salvia nemorosa
10 – 24 Mar
8-10 wk
19 May
1 wk after
3 Jun
3 wk after
Black-eyed susan vine
Thunbergia alata
Fleece
20 Apr – 18 May
6-10 wk
29 Jun
7 wk after
California goldenpoppy
Eschscholzia californica
6 May
1 wk before
Painted tongue
Salpiglossis sinuata
Fleece
8 – 22 Apr
8-10 wk
17 Jun
5 wk after
Water forget-me-not
Myosotis scorpioides
3 – 17 Mar
6-8 wk
28 Apr
2 wk before
23 May
1 wk after
Current date Soon Date passed