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Rel. frost
Last spring frost (0°C) 26 Apr Frost 1 of 10 years · 20 years of data
Frost-free season 220 days 26 Apr – 2 Dec
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)
7 – 21 Apr
5-7 wk
26 May
4 wk after
22 Apr
1 wk before
Broccoli
Brassica oleracea (Italica-gruppen)
1 – 15 Apr
4-6 wk
13 May
2 wk after
22 Apr
1 wk before
Chili pepper
Capsicum annuum
Fleece
20 Mar – 17 Apr
8-12 wk
12 Jun
7 wk after
Kale
Brassica oleracea (Curly Kale-gruppen)
12 – 26 Feb
5-7 wk
2 Apr
4 wk before
18 Apr
2 wk before
Cucumber
Cucumis sativus
Fleece
15 – 22 May
3-4 wk
12 Jun
7 wk after
Florence Fennel
Foeniculum vulgare
Fleece
8 – 15 May
4-5 wk
12 Jun
7 wk after
17 May
3 wk after
Butter bean
Phaseolus lunatus
Season too short
4 – 11 May
3-4 wk
1 Jun
5 wk after
Onion
Allium cepa (Cepa-gruppen)
1 Feb – 1 Mar
8-12 wk
26 Apr
Vid frost
9 May
1 wk after
Onion (sets)
Allium cepa (Cepa-gruppen)
9 May
1 wk after
Sweetcorn
Zea mays
Greenhouse
26 Apr – 3 May
3-4 wk
24 May
4 wk after
Chard
Beta vulgaris (Flavescens-gruppen)
28 Apr – 5 May
3-4 wk
26 May
4 wk after
9 May
1 wk after
Carrot
Daucus carota subsp. sativus var. sativus
18 Apr
2 wk before
Cavolo nero
Brassica oleracea (Palm Kale-gruppen)
12 – 26 Feb
5-7 wk
2 Apr
4 wk before
18 Apr
2 wk before
Potato
Solanum tuberosum
2 – 16 May
4-6 wk
13 Jun
7 wk after
4 May
1 wk after
Ornamental Kale
Brassica oleracea (Ornamental-gruppen)
12 – 26 Feb
5-7 wk
2 Apr
4 wk before
22 Apr
1 wk before
Pumpkin
Cucurbita pepo
Fleece
15 – 22 May
3-4 wk
12 Jun
7 wk after
Beetroot
Beta vulgaris (Conditiva-gruppen)
28 Apr – 5 May
3-4 wk
26 May
4 wk after
9 May
1 wk after
Red Cabbage
Brassica oleracea (Red Cabbage-gruppen)
1 – 15 Apr
4-6 wk
13 May
2 wk after
Lettuce
Lactuca sativa
22 – 29 Mar
3-4 wk
19 Apr
1 wk before
22 Apr
1 wk before
Savoy Cabbage
Brassica oleracea (Savoy Cabbage-gruppen)
8 – 22 Mar
4-6 wk
19 Apr
1 wk before
Shallot (bulbs)
Allium cepa (Aggregatum-gruppen)
14 – 28 Mar
2-4 wk
11 Apr
2 wk before
18 Apr
2 wk before
Shallot (sets)
Allium cepa (Aggregatum-gruppen)
22 Apr
1 wk before
Spinach
Spinacia oleracea
14 – 21 Mar
3-4 wk
11 Apr
2 wk before
13 Apr
3 wk before
Sweet potato
Ipomoea batatas
14 – 28 May
4-6 wk
25 Jun
8 wk after
Tomato
Solanum lycopersicum
18 Apr – 2 May
6-8 wk
13 Jun
7 wk after
Tomatillo
Physalis ixocarpa
French bean
Phaseolus vulgaris
16 – 30 May
2-4 wk
13 Jun
7 wk after
6 Jun
5 wk after
White Cabbage
Brassica oleracea (White Cabbage-gruppen)
1 – 15 Apr
4-6 wk
13 May
2 wk after
Pea
Pisum sativum
14 – 21 Mar
3-4 wk
11 Apr
2 wk before
22 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
Greenhouse
12 – 26 Apr
4-6 wk
24 May
4 wk after
Lemon balm
Melissa officinalis
15 Feb – 1 Mar
8-10 wk
26 Apr
Vid frost
21 May
3 wk after
Dill
Anethum graveolens
22 Apr
1 wk before
Chives
Allium schoenoprasum
5 – 19 Feb
6-8 wk
2 Apr
4 wk before
22 Apr
1 wk before
Spearmint
Mentha spicata
17 Jan – 14 Feb
8-12 wk
11 Apr
2 wk before
21 May
3 wk after
Coriander
Coriandrum sativum
9 May
1 wk after
Sage
Salvia officinalis
17 – 31 Mar
8-10 wk
26 May
4 wk after
Thyme
Thymus vulgaris
4 – 18 Mar
8-10 wk
13 May
2 wk after
Oregano
Origanum vulgare
7 – 21 Mar
6-8 wk
2 May
1 wk after
21 May
3 wk after
Parsley
Petroselinum crispum
14 – 28 Feb
6-8 wk
11 Apr
2 wk before
22 Apr
1 wk before
Rosemary
Salvia rosmarinus
17 Feb – 17 Mar
10-14 wk
26 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
15 – 22 May
3-4 wk
12 Jun
7 wk after
Cornflower
Centaurea cyanus
11 Apr
2 wk before
22 Apr
1 wk before
Statice
Limonium sinuatum
4 – 18 Apr
8-10 wk
13 Jun
7 wk after
Sweet William
Dianthus barbatus
14 – 28 Feb
6-8 wk
11 Apr
2 wk before
4 May
1 wk after
Snow-on-the-mountain
Euphorbia marginata
18 Apr – 2 May
6-8 wk
13 Jun
7 wk after
6 Jul
10 wk after
Dahlia
Dahlia × pinnata
13 – 27 Apr
6-8 wk
8 Jun
6 wk after
Dahlia (tubers)
Dahlia × pinnata
13 Apr – 11 May
4-8 wk
8 Jun
6 wk after
21 May
3 wk after
Foxglove
Digitalis purpurea
31 Jan – 14 Feb
8-10 wk
11 Apr
2 wk before
9 May
1 wk after
Busy lizzie
Impatiens walleriana
29 Mar – 26 Apr
8-12 wk
21 Jun
8 wk after
Creeping zinnia
Sanvitalia procumbens
18 Apr – 2 May
6-8 wk
13 Jun
7 wk after
Hyacinth bean
Dolichos lablab
Season too short
1 – 15 May
4-6 wk
12 Jun
7 wk after
Chinese lantern
Physalis alkekengi
17 – 31 Mar
8-10 wk
26 May
4 wk after
Love in a mist
Nigella damascena
22 Apr
1 wk before
Strawflower
Xerochrysum bracteatum
Fleece
5 – 19 Apr
6-8 wk
31 May
5 wk after
11 Jun
7 wk after
Tall verbena
Verbena bonariensis
3 – 31 Mar
8-12 wk
26 May
4 wk after
Cardoon
Cynara cardunculus
Greenhouse
23 Feb – 23 Mar
8-12 wk
18 May
3 wk after
Regal-foxtail
Ptilotus nobilis
Greenhouse
8 Mar – 5 Apr
8-12 wk
31 May
5 wk after
Globe amaranth
Gomphrena globosa
Fleece
17 Apr – 1 May
6-8 wk
12 Jun
7 wk after
Corn poppy
Papaver rhoeas
22 Apr
1 wk before
Snapdragon
Antirrhinum majus
25 Jan – 22 Feb
8-12 wk
19 Apr
1 wk before
4 May
1 wk after
Flossflower
Ageratum houstonianum
Fleece
3 – 17 Apr
8-10 wk
12 Jun
7 wk after
Sweet pea
Lathyrus odoratus
14 Feb – 7 Mar
5-8 wk
11 Apr
2 wk before
Stock
Matthiola incana
22 Feb – 8 Mar
6-8 wk
19 Apr
1 wk before
9 May
1 wk after
Wormwood
Artemisia absinthium
14 – 28 Feb
6-8 wk
11 Apr
2 wk before
9 May
1 wk after
Mexican sunflower
Tithonia rotundifolia
Fleece
1 – 15 May
4-6 wk
12 Jun
7 wk after
Pansy
Viola × wittrockiana
22 Jan – 5 Feb
8-10 wk
2 Apr
4 wk before
4 May
1 wk after
Petunia
Petunia
Fleece
8 Mar – 5 Apr
8-12 wk
31 May
5 wk after
Scabious
Scabiosa atropurpurea
31 Mar – 14 Apr
6-8 wk
26 May
4 wk after
6 Jun
5 wk after
Zinnia
Zinnia elegans
2 – 16 May
4-6 wk
13 Jun
7 wk after
Common morning glory
Ipomoea purpurea
Fleece
8 – 22 May
3-5 wk
12 Jun
7 wk after
Cosmos
Cosmos bipinnatus
2 – 16 May
4-6 wk
13 Jun
7 wk after
6 Jun
5 wk after
Scarlet milkweed
Asclepias curassavica
Greenhouse
20 Mar – 17 Apr
8-12 wk
12 Jun
7 wk after
Bee balm
Monarda didyma
1 Feb – 1 Mar
8-12 wk
26 Apr
Vid frost
21 May
3 wk after
Yarrow
Achillea millefolium
14 – 28 Feb
6-8 wk
11 Apr
2 wk before
9 May
1 wk after
Safflower
Carthamus tinctorius
11 Apr
2 wk before
22 Apr
1 wk before
Iceland poppy
Papaver nudicaule
5 – 19 Feb
6-8 wk
2 Apr
4 wk before
18 Apr
2 wk before
Bishop's flower
Ammi majus
26 Mar – 9 Apr
4-6 wk
7 May
1 wk after
9 May
1 wk after
Drumsticks
Pycnosorus globosus
Greenhouse
8 – 22 Mar
10-12 wk
31 May
5 wk after
Sunflower
Helianthus annuus
Fleece
3 – 10 May
3-4 wk
31 May
5 wk after
6 May
1 wk after
China aster
Callistephus chinensis
Fleece
5 – 19 Apr
6-8 wk
31 May
5 wk after
17 May
3 wk after
Annual phlox
Phlox drummondii
6 – 20 Apr
6-8 wk
1 Jun
5 wk after
6 Jun
5 wk after
Hollyhock
Alcea rosea
14 – 28 Feb
6-8 wk
11 Apr
2 wk before
9 May
1 wk after
Delphinium
Delphinium elatum
18 Feb – 18 Mar
8-12 wk
13 May
2 wk after
21 May
3 wk after
African marigold
Tagetes erecta
18 Apr – 2 May
6-8 wk
13 Jun
7 wk after
Black-eyed Susan
Rudbeckia hirta
31 Mar – 14 Apr
6-8 wk
26 May
4 wk after
6 Jun
5 wk after
Woodland sage
Salvia nemorosa
21 Feb – 7 Mar
8-10 wk
2 May
1 wk after
21 May
3 wk after
Black-eyed susan vine
Thunbergia alata
Fleece
3 Apr – 1 May
6-10 wk
12 Jun
7 wk after
California goldenpoppy
Eschscholzia californica
22 Apr
1 wk before
Painted tongue
Salpiglossis sinuata
4 – 18 Apr
8-10 wk
13 Jun
7 wk after
Water forget-me-not
Myosotis scorpioides
14 – 28 Feb
6-8 wk
11 Apr
2 wk before
9 May
1 wk after
Current date Soon Date passed