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Rel. frost
Last spring frost (0°C) 28 Apr Frost 1 of 10 years · 20 years of data
Frost-free season 210 days 28 Apr – 24 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)
9 – 23 Apr
5-7 wk
28 May
5 wk after
24 Apr
1 wk before
Broccoli
Brassica oleracea (Italica-gruppen)
3 – 17 Apr
4-6 wk
15 May
3 wk after
24 Apr
1 wk before
Chili pepper
Capsicum annuum
Fleece
31 Mar – 28 Apr
8-12 wk
23 Jun
8 wk after
Kale
Brassica oleracea (Curly Kale-gruppen)
14 – 28 Feb
5-7 wk
4 Apr
4 wk before
20 Apr
2 wk before
Cucumber
Cucumis sativus
Fleece
26 May – 2 Jun
3-4 wk
23 Jun
8 wk after
Florence Fennel
Foeniculum vulgare
Fleece
19 – 26 May
4-5 wk
23 Jun
8 wk after
24 May
4 wk after
Butter bean
Phaseolus lunatus
Season too short
11 – 18 May
3-4 wk
8 Jun
6 wk after
Onion
Allium cepa (Cepa-gruppen)
3 Feb – 3 Mar
8-12 wk
28 Apr
Vid frost
11 May
2 wk after
Onion (sets)
Allium cepa (Cepa-gruppen)
Season too short
15 Apr
2 wk before
Sweetcorn
Zea mays
Season too short
3 – 10 May
3-4 wk
31 May
5 wk after
Chard
Beta vulgaris (Flavescens-gruppen)
30 Apr – 7 May
3-4 wk
28 May
5 wk after
11 May
2 wk after
Carrot
Daucus carota subsp. sativus var. sativus
20 Apr
2 wk before
Cavolo nero
Brassica oleracea (Palm Kale-gruppen)
14 – 28 Feb
5-7 wk
4 Apr
4 wk before
20 Apr
2 wk before
Potato
Solanum tuberosum
Season too short
25 Feb – 11 Mar
4-6 wk
8 Apr
3 wk before
8 Apr
3 wk before
Ornamental Kale
Brassica oleracea (Ornamental-gruppen)
14 – 28 Feb
5-7 wk
4 Apr
4 wk before
24 Apr
1 wk before
Pumpkin
Cucurbita pepo
26 May – 2 Jun
3-4 wk
23 Jun
10 wk after
Beetroot
Beta vulgaris (Conditiva-gruppen)
30 Apr – 7 May
3-4 wk
28 May
5 wk after
11 May
2 wk after
Red Cabbage
Brassica oleracea (Red Cabbage-gruppen)
3 – 17 Apr
4-6 wk
15 May
3 wk after
Lettuce
Lactuca sativa
24 – 31 Mar
3-4 wk
21 Apr
1 wk before
24 Apr
1 wk before
Savoy Cabbage
Brassica oleracea (Savoy Cabbage-gruppen)
10 – 24 Mar
4-6 wk
21 Apr
1 wk before
Shallot (bulbs)
Allium cepa (Aggregatum-gruppen)
Season too short
13 – 27 Feb
2-4 wk
13 Mar
7 wk before
13 Mar
7 wk before
Shallot (sets)
Allium cepa (Aggregatum-gruppen)
Season too short
25 Mar
5 wk before
Spinach
Spinacia oleracea
16 – 23 Mar
3-4 wk
13 Apr
3 wk before
15 Apr
3 wk before
Sweet potato
Ipomoea batatas
16 – 30 May
4-6 wk
27 Jun
11 wk after
Tomato
Solanum lycopersicum
20 Apr – 4 May
6-8 wk
15 Jun
8 wk after
Tomatillo
Physalis ixocarpa
French bean
Phaseolus vulgaris
18 May – 1 Jun
2-4 wk
15 Jun
8 wk after
8 Jun
6 wk after
White Cabbage
Brassica oleracea (White Cabbage-gruppen)
3 – 17 Apr
4-6 wk
15 May
3 wk after
Pea
Pisum sativum
16 – 23 Mar
3-4 wk
13 Apr
3 wk before
24 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
Season too short
19 Apr – 3 May
4-6 wk
31 May
5 wk after
Lemon balm
Melissa officinalis
17 Feb – 3 Mar
8-10 wk
28 Apr
Vid frost
23 May
4 wk after
Dill
Anethum graveolens
24 Apr
1 wk before
Chives
Allium schoenoprasum
7 – 21 Feb
6-8 wk
4 Apr
4 wk before
24 Apr
1 wk before
Spearmint
Mentha spicata
19 Jan – 16 Feb
8-12 wk
13 Apr
3 wk before
23 May
4 wk after
Coriander
Coriandrum sativum
11 May
2 wk after
Sage
Salvia officinalis
19 Mar – 2 Apr
8-10 wk
28 May
5 wk after
Thyme
Thymus vulgaris
6 – 20 Mar
8-10 wk
15 May
3 wk after
Oregano
Origanum vulgare
9 – 23 Mar
6-8 wk
4 May
1 wk after
23 May
4 wk after
Parsley
Petroselinum crispum
16 Feb – 2 Mar
6-8 wk
13 Apr
3 wk before
24 Apr
1 wk before
Rosemary
Salvia rosmarinus
19 Feb – 19 Mar
10-14 wk
28 May
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
26 May – 2 Jun
3-4 wk
23 Jun
8 wk after
Cornflower
Centaurea cyanus
13 Apr
3 wk before
24 Apr
1 wk before
Statice
Limonium sinuatum
6 – 20 Apr
8-10 wk
15 Jun
8 wk after
Sweet William
Dianthus barbatus
16 Feb – 2 Mar
6-8 wk
13 Apr
3 wk before
6 May
1 wk after
Snow-on-the-mountain
Euphorbia marginata
20 Apr – 4 May
6-8 wk
15 Jun
8 wk after
8 Jul
11 wk after
Dahlia
Dahlia × pinnata
15 – 29 Apr
6-8 wk
10 Jun
7 wk after
Dahlia (tubers)
Dahlia × pinnata
Season too short
2 – 30 Mar
4-8 wk
27 Apr
27 Apr
Foxglove
Digitalis purpurea
2 – 16 Feb
8-10 wk
13 Apr
3 wk before
11 May
2 wk after
Busy lizzie
Impatiens walleriana
31 Mar – 28 Apr
8-12 wk
23 Jun
10 wk after
Creeping zinnia
Sanvitalia procumbens
20 Apr – 4 May
6-8 wk
15 Jun
8 wk after
Hyacinth bean
Dolichos lablab
Season too short
12 – 26 May
4-6 wk
23 Jun
8 wk after
Chinese lantern
Physalis alkekengi
19 Mar – 2 Apr
8-10 wk
28 May
5 wk after
Love in a mist
Nigella damascena
24 Apr
1 wk before
Strawflower
Xerochrysum bracteatum
Fleece
13 – 27 Apr
6-8 wk
8 Jun
6 wk after
13 Jun
7 wk after
Tall verbena
Verbena bonariensis
5 Mar – 2 Apr
8-12 wk
28 May
5 wk after
Cardoon
Cynara cardunculus
Greenhouse
1 – 29 Mar
8-12 wk
24 May
4 wk after
Regal-foxtail
Ptilotus nobilis
Fleece
31 Mar – 28 Apr
8-12 wk
23 Jun
8 wk after
Globe amaranth
Gomphrena globosa
Fleece
28 Apr – 12 May
6-8 wk
23 Jun
8 wk after
Corn poppy
Papaver rhoeas
24 Apr
1 wk before
Snapdragon
Antirrhinum majus
27 Jan – 24 Feb
8-12 wk
21 Apr
1 wk before
6 May
1 wk after
Flossflower
Ageratum houstonianum
Fleece
14 – 28 Apr
8-10 wk
23 Jun
8 wk after
Sweet pea
Lathyrus odoratus
16 Feb – 9 Mar
5-8 wk
13 Apr
3 wk before
Stock
Matthiola incana
24 Feb – 10 Mar
6-8 wk
21 Apr
1 wk before
11 May
2 wk after
Wormwood
Artemisia absinthium
16 Feb – 2 Mar
6-8 wk
13 Apr
3 wk before
11 May
2 wk after
Mexican sunflower
Tithonia rotundifolia
Fleece
12 – 26 May
4-6 wk
23 Jun
8 wk after
Pansy
Viola × wittrockiana
24 Jan – 7 Feb
8-10 wk
4 Apr
4 wk before
6 May
1 wk after
Petunia
Petunia
23 Mar – 20 Apr
8-12 wk
15 Jun
8 wk after
Scabious
Scabiosa atropurpurea
2 – 16 Apr
6-8 wk
28 May
5 wk after
8 Jun
6 wk after
Zinnia
Zinnia elegans
4 – 18 May
4-6 wk
15 Jun
8 wk after
Common morning glory
Ipomoea purpurea
Fleece
19 May – 2 Jun
3-5 wk
23 Jun
8 wk after
Cosmos
Cosmos bipinnatus
4 – 18 May
4-6 wk
15 Jun
8 wk after
8 Jun
6 wk after
Scarlet milkweed
Asclepias curassavica
Greenhouse
31 Mar – 28 Apr
8-12 wk
23 Jun
8 wk after
Bee balm
Monarda didyma
3 Feb – 3 Mar
8-12 wk
28 Apr
Vid frost
23 May
4 wk after
Yarrow
Achillea millefolium
16 Feb – 2 Mar
6-8 wk
13 Apr
3 wk before
11 May
2 wk after
Safflower
Carthamus tinctorius
13 Apr
3 wk before
24 Apr
1 wk before
Iceland poppy
Papaver nudicaule
7 – 21 Feb
6-8 wk
4 Apr
4 wk before
20 Apr
2 wk before
Bishop's flower
Ammi majus
28 Mar – 11 Apr
4-6 wk
9 May
2 wk after
11 May
2 wk after
Drumsticks
Pycnosorus globosus
Greenhouse
16 – 30 Mar
10-12 wk
8 Jun
6 wk after
Sunflower
Helianthus annuus
18 – 25 May
3-4 wk
15 Jun
8 wk after
23 May
4 wk after
China aster
Callistephus chinensis
Fleece
13 – 27 Apr
6-8 wk
8 Jun
6 wk after
24 May
4 wk after
Annual phlox
Phlox drummondii
8 – 22 Apr
6-8 wk
3 Jun
6 wk after
8 Jun
6 wk after
Hollyhock
Alcea rosea
16 Feb – 2 Mar
6-8 wk
13 Apr
3 wk before
11 May
2 wk after
Delphinium
Delphinium elatum
20 Feb – 20 Mar
8-12 wk
15 May
3 wk after
23 May
4 wk after
African marigold
Tagetes erecta
20 Apr – 4 May
6-8 wk
15 Jun
8 wk after
Black-eyed Susan
Rudbeckia hirta
2 – 16 Apr
6-8 wk
28 May
5 wk after
8 Jun
6 wk after
Woodland sage
Salvia nemorosa
23 Feb – 9 Mar
8-10 wk
4 May
1 wk after
23 May
4 wk after
Black-eyed susan vine
Thunbergia alata
Fleece
14 Apr – 12 May
6-10 wk
23 Jun
8 wk after
California goldenpoppy
Eschscholzia californica
24 Apr
1 wk before
Painted tongue
Salpiglossis sinuata
6 – 20 Apr
8-10 wk
15 Jun
8 wk after
Water forget-me-not
Myosotis scorpioides
16 Feb – 2 Mar
6-8 wk
13 Apr
3 wk before
11 May
2 wk after
Current date Soon Date passed