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Rel. frost
Last spring frost (0°C) 14 Apr Normal year · 20 years of data
Frost-free season 200 days 14 Apr – 31 Oct
Probability that frost is over

50% = 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)
26 Mar – 9 Apr
5-7 wk
14 May
5 wk after
10 Apr
1 wk before
Broccoli
Brassica oleracea (Italica-gruppen)
20 Mar – 3 Apr
4-6 wk
1 May
3 wk after
10 Apr
1 wk before
Chili pepper
Capsicum annuum
Fleece
17 Mar – 14 Apr
8-12 wk
9 Jun
8 wk after
Kale
Brassica oleracea (Curly Kale-gruppen)
31 Jan – 14 Feb
5-7 wk
21 Mar
4 wk before
6 Apr
2 wk before
Cucumber
Cucumis sativus
Fleece
12 – 19 May
3-4 wk
9 Jun
8 wk after
Florence Fennel
Foeniculum vulgare
Fleece
5 – 12 May
4-5 wk
9 Jun
8 wk after
10 May
4 wk after
Butter bean
Phaseolus lunatus
Season too short
27 Apr – 4 May
3-4 wk
25 May
6 wk after
Onion
Allium cepa (Cepa-gruppen)
20 Jan – 17 Feb
8-12 wk
14 Apr
Vid frost
27 Apr
2 wk after
Onion (sets)
Allium cepa (Cepa-gruppen)
Season too short
1 Apr
2 wk before
Sweetcorn
Zea mays
Season too short
19 – 26 Apr
3-4 wk
17 May
5 wk after
Chard
Beta vulgaris (Flavescens-gruppen)
16 – 23 Apr
3-4 wk
14 May
5 wk after
27 Apr
2 wk after
Carrot
Daucus carota subsp. sativus var. sativus
6 Apr
2 wk before
Cavolo nero
Brassica oleracea (Palm Kale-gruppen)
31 Jan – 14 Feb
5-7 wk
21 Mar
4 wk before
6 Apr
2 wk before
Potato
Solanum tuberosum
Season too short
11 – 25 Feb
4-6 wk
25 Mar
3 wk before
25 Mar
3 wk before
Ornamental Kale
Brassica oleracea (Ornamental-gruppen)
31 Jan – 14 Feb
5-7 wk
21 Mar
4 wk before
10 Apr
1 wk before
Pumpkin
Cucurbita pepo
Fleece
12 – 19 May
3-4 wk
9 Jun
8 wk after
Beetroot
Beta vulgaris (Conditiva-gruppen)
16 – 23 Apr
3-4 wk
14 May
5 wk after
27 Apr
2 wk after
Red Cabbage
Brassica oleracea (Red Cabbage-gruppen)
20 Mar – 3 Apr
4-6 wk
1 May
3 wk after
Lettuce
Lactuca sativa
10 – 17 Mar
3-4 wk
7 Apr
1 wk before
10 Apr
1 wk before
Savoy Cabbage
Brassica oleracea (Savoy Cabbage-gruppen)
24 Feb – 10 Mar
4-6 wk
7 Apr
1 wk before
Shallot (bulbs)
Allium cepa (Aggregatum-gruppen)
Season too short
30 Jan – 13 Feb
2-4 wk
27 Feb
7 wk before
27 Feb
7 wk before
Shallot (sets)
Allium cepa (Aggregatum-gruppen)
Season too short
11 Mar
5 wk before
Spinach
Spinacia oleracea
2 – 9 Mar
3-4 wk
30 Mar
3 wk before
1 Apr
3 wk before
Sweet potato
Ipomoea batatas
2 – 16 May
4-6 wk
13 Jun
11 wk after
Tomato
Solanum lycopersicum
6 – 20 Apr
6-8 wk
1 Jun
8 wk after
Tomatillo
Physalis ixocarpa
French bean
Phaseolus vulgaris
4 – 18 May
2-4 wk
1 Jun
8 wk after
25 May
6 wk after
White Cabbage
Brassica oleracea (White Cabbage-gruppen)
20 Mar – 3 Apr
4-6 wk
1 May
3 wk after
Pea
Pisum sativum
2 – 9 Mar
3-4 wk
30 Mar
3 wk before
10 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
5 – 19 Apr
4-6 wk
17 May
5 wk after
Lemon balm
Melissa officinalis
3 – 17 Feb
8-10 wk
14 Apr
Vid frost
9 May
4 wk after
Dill
Anethum graveolens
10 Apr
1 wk before
Chives
Allium schoenoprasum
24 Jan – 7 Feb
6-8 wk
21 Mar
4 wk before
10 Apr
1 wk before
Spearmint
Mentha spicata
5 Jan – 2 Feb
8-12 wk
30 Mar
3 wk before
9 May
4 wk after
Coriander
Coriandrum sativum
27 Apr
2 wk after
Sage
Salvia officinalis
5 – 19 Mar
8-10 wk
14 May
5 wk after
Thyme
Thymus vulgaris
20 Feb – 6 Mar
8-10 wk
1 May
3 wk after
Oregano
Origanum vulgare
23 Feb – 9 Mar
6-8 wk
20 Apr
1 wk after
9 May
4 wk after
Parsley
Petroselinum crispum
2 – 16 Feb
6-8 wk
30 Mar
3 wk before
10 Apr
1 wk before
Rosemary
Salvia rosmarinus
5 Feb – 5 Mar
10-14 wk
14 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
12 – 19 May
3-4 wk
9 Jun
8 wk after
Cornflower
Centaurea cyanus
30 Mar
3 wk before
10 Apr
1 wk before
Statice
Limonium sinuatum
23 Mar – 6 Apr
8-10 wk
1 Jun
8 wk after
Sweet William
Dianthus barbatus
2 – 16 Feb
6-8 wk
30 Mar
3 wk before
22 Apr
1 wk after
Snow-on-the-mountain
Euphorbia marginata
6 – 20 Apr
6-8 wk
1 Jun
8 wk after
24 Jun
11 wk after
Dahlia
Dahlia × pinnata
1 – 15 Apr
6-8 wk
27 May
7 wk after
Dahlia (tubers)
Dahlia × pinnata
Season too short
16 Feb – 16 Mar
4-8 wk
13 Apr
13 Apr
Foxglove
Digitalis purpurea
19 Jan – 2 Feb
8-10 wk
30 Mar
3 wk before
27 Apr
2 wk after
Busy lizzie
Impatiens walleriana
Fleece
17 Mar – 14 Apr
8-12 wk
9 Jun
8 wk after
Creeping zinnia
Sanvitalia procumbens
6 – 20 Apr
6-8 wk
1 Jun
8 wk after
Hyacinth bean
Dolichos lablab
Season too short
28 Apr – 12 May
4-6 wk
9 Jun
8 wk after
Chinese lantern
Physalis alkekengi
5 – 19 Mar
8-10 wk
14 May
5 wk after
Love in a mist
Nigella damascena
10 Apr
1 wk before
Strawflower
Xerochrysum bracteatum
Fleece
30 Mar – 13 Apr
6-8 wk
25 May
6 wk after
30 May
7 wk after
Tall verbena
Verbena bonariensis
19 Feb – 19 Mar
8-12 wk
14 May
5 wk after
Cardoon
Cynara cardunculus
Greenhouse
15 Feb – 15 Mar
8-12 wk
10 May
4 wk after
Regal-foxtail
Ptilotus nobilis
Greenhouse
2 – 30 Mar
8-12 wk
25 May
6 wk after
Globe amaranth
Gomphrena globosa
Fleece
14 – 28 Apr
6-8 wk
9 Jun
8 wk after
Corn poppy
Papaver rhoeas
10 Apr
1 wk before
Snapdragon
Antirrhinum majus
13 Jan – 10 Feb
8-12 wk
7 Apr
1 wk before
22 Apr
1 wk after
Flossflower
Ageratum houstonianum
Fleece
31 Mar – 14 Apr
8-10 wk
9 Jun
8 wk after
Sweet pea
Lathyrus odoratus
2 – 23 Feb
5-8 wk
30 Mar
3 wk before
Stock
Matthiola incana
10 – 24 Feb
6-8 wk
7 Apr
1 wk before
27 Apr
2 wk after
Wormwood
Artemisia absinthium
2 – 16 Feb
6-8 wk
30 Mar
3 wk before
27 Apr
2 wk after
Mexican sunflower
Tithonia rotundifolia
Fleece
28 Apr – 12 May
4-6 wk
9 Jun
8 wk after
Pansy
Viola × wittrockiana
10 – 24 Jan
8-10 wk
21 Mar
4 wk before
22 Apr
1 wk after
Petunia
Petunia
Fleece
2 – 30 Mar
8-12 wk
25 May
6 wk after
Scabious
Scabiosa atropurpurea
19 Mar – 2 Apr
6-8 wk
14 May
5 wk after
25 May
6 wk after
Zinnia
Zinnia elegans
20 Apr – 4 May
4-6 wk
1 Jun
8 wk after
Common morning glory
Ipomoea purpurea
Fleece
5 – 19 May
3-5 wk
9 Jun
8 wk after
Cosmos
Cosmos bipinnatus
20 Apr – 4 May
4-6 wk
1 Jun
8 wk after
25 May
6 wk after
Scarlet milkweed
Asclepias curassavica
Greenhouse
17 Mar – 14 Apr
8-12 wk
9 Jun
8 wk after
Bee balm
Monarda didyma
20 Jan – 17 Feb
8-12 wk
14 Apr
Vid frost
9 May
4 wk after
Yarrow
Achillea millefolium
2 – 16 Feb
6-8 wk
30 Mar
3 wk before
27 Apr
2 wk after
Safflower
Carthamus tinctorius
30 Mar
3 wk before
10 Apr
1 wk before
Iceland poppy
Papaver nudicaule
24 Jan – 7 Feb
6-8 wk
21 Mar
4 wk before
6 Apr
2 wk before
Bishop's flower
Ammi majus
14 – 28 Mar
4-6 wk
25 Apr
2 wk after
27 Apr
2 wk after
Drumsticks
Pycnosorus globosus
Greenhouse
2 – 16 Mar
10-12 wk
25 May
6 wk after
Sunflower
Helianthus annuus
Fleece
27 Apr – 4 May
3-4 wk
25 May
6 wk after
27 Apr
2 wk after
China aster
Callistephus chinensis
Fleece
30 Mar – 13 Apr
6-8 wk
25 May
6 wk after
10 May
4 wk after
Annual phlox
Phlox drummondii
25 Mar – 8 Apr
6-8 wk
20 May
6 wk after
25 May
6 wk after
Hollyhock
Alcea rosea
2 – 16 Feb
6-8 wk
30 Mar
3 wk before
27 Apr
2 wk after
Delphinium
Delphinium elatum
6 Feb – 6 Mar
8-12 wk
1 May
3 wk after
9 May
4 wk after
African marigold
Tagetes erecta
6 – 20 Apr
6-8 wk
1 Jun
8 wk after
Black-eyed Susan
Rudbeckia hirta
19 Mar – 2 Apr
6-8 wk
14 May
5 wk after
25 May
6 wk after
Woodland sage
Salvia nemorosa
9 – 23 Feb
8-10 wk
20 Apr
1 wk after
9 May
4 wk after
Black-eyed susan vine
Thunbergia alata
Fleece
31 Mar – 28 Apr
6-10 wk
9 Jun
8 wk after
California goldenpoppy
Eschscholzia californica
10 Apr
1 wk before
Painted tongue
Salpiglossis sinuata
23 Mar – 6 Apr
8-10 wk
1 Jun
8 wk after
Water forget-me-not
Myosotis scorpioides
2 – 16 Feb
6-8 wk
30 Mar
3 wk before
27 Apr
2 wk after
Current date Soon Date passed