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Rel. frost
Last spring frost (0°C) 21 Apr Frost 3 of 4 years · 20 years of data
Frost-free season 176 days 21 Apr – 14 Oct
Probability that frost is over

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