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Rel. frost
Last spring frost (0°C) 22 Apr Frost 3 of 4 years · 20 years of data
Frost-free season 172 days 22 Apr – 11 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
23 Mar – 6 Apr
5-7 wk
11 May
3 wk after
18 Apr
1 wk before
Broccoli
Brassica oleracea (Italica-gruppen)
28 Mar – 11 Apr
4-6 wk
9 May
3 wk after
18 Apr
1 wk after
Chili pepper
Capsicum annuum
Season too short
6 Mar – 3 Apr
8-12 wk
29 May
5 wk after
Kale
Brassica oleracea (Curly Kale-gruppen)
8 – 22 Feb
5-7 wk
29 Mar
3 wk before
14 Apr
Vid frost
Cucumber
Cucumis sativus
Greenhouse
1 – 8 May
3-4 wk
29 May
5 wk after
Florence Fennel
Foeniculum vulgare
Season too short
24 Apr – 1 May
4-5 wk
29 May
5 wk after
13 May
3 wk after
Butter bean
Phaseolus lunatus
Season too short
13 – 20 May
3-4 wk
10 Jun
7 wk after
Onion
Allium cepa (Cepa-gruppen)
28 Jan – 25 Feb
8-12 wk
22 Apr
Vid frost
5 May
3 wk after
Onion (sets)
Allium cepa (Cepa-gruppen)
5 May
3 wk after
Sweetcorn
Zea mays
Season too short
5 – 12 May
3-4 wk
2 Jun
6 wk after
Chard
Beta vulgaris (Flavescens-gruppen)
24 Apr – 1 May
3-4 wk
22 May
5 wk after
5 May
3 wk after
Carrot
Daucus carota subsp. sativus var. sativus
14 Apr
Vid frost
Cavolo nero
Brassica oleracea (Palm Kale-gruppen)
8 – 22 Feb
5-7 wk
29 Mar
3 wk before
14 Apr
Vid frost
Potato
Solanum tuberosum
28 Apr – 12 May
4-6 wk
9 Jun
7 wk after
30 Apr
2 wk after
Ornamental Kale
Brassica oleracea (Ornamental-gruppen)
8 – 22 Feb
5-7 wk
29 Mar
3 wk before
18 Apr
1 wk after
Pumpkin
Cucurbita pepo
Greenhouse
1 – 8 May
3-4 wk
29 May
5 wk after
Beetroot
Beta vulgaris (Conditiva-gruppen)
24 Apr – 1 May
3-4 wk
22 May
5 wk after
5 May
3 wk after
Red Cabbage
Brassica oleracea (Red Cabbage-gruppen)
28 Mar – 11 Apr
4-6 wk
9 May
3 wk after
Lettuce
Lactuca sativa
18 – 25 Mar
3-4 wk
15 Apr
1 wk before
18 Apr
1 wk after
Savoy Cabbage
Brassica oleracea (Savoy Cabbage-gruppen)
4 – 18 Mar
4-6 wk
15 Apr
1 wk before
Shallot (bulbs)
Allium cepa (Aggregatum-gruppen)
10 – 24 Mar
2-4 wk
7 Apr
2 wk before
14 Apr
Vid frost
Shallot (sets)
Allium cepa (Aggregatum-gruppen)
18 Apr
1 wk after
Spinach
Spinacia oleracea
10 – 17 Mar
3-4 wk
7 Apr
2 wk before
9 Apr
1 wk before
Sweet potato
Ipomoea batatas
10 – 24 May
4-6 wk
21 Jun
8 wk after
Tomato
Solanum lycopersicum
Fleece
3 – 17 Apr
6-8 wk
29 May
5 wk after
Tomatillo
Physalis ixocarpa
French bean
Phaseolus vulgaris
Fleece
1 – 15 May
2-4 wk
29 May
5 wk after
27 May
5 wk after
White Cabbage
Brassica oleracea (White Cabbage-gruppen)
28 Mar – 11 Apr
4-6 wk
9 May
3 wk after
Pea
Pisum sativum
10 – 17 Mar
3-4 wk
7 Apr
2 wk before
18 Apr
1 wk after
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
21 Apr – 5 May
4-6 wk
2 Jun
6 wk after
Lemon balm
Melissa officinalis
11 – 25 Feb
8-10 wk
22 Apr
Vid frost
17 May
5 wk after
Dill
Anethum graveolens
18 Apr
1 wk after
Chives
Allium schoenoprasum
1 – 15 Feb
6-8 wk
29 Mar
3 wk before
18 Apr
1 wk after
Spearmint
Mentha spicata
13 Jan – 10 Feb
8-12 wk
7 Apr
2 wk before
17 May
5 wk after
Coriander
Coriandrum sativum
5 May
3 wk after
Sage
Salvia officinalis
13 – 27 Mar
8-10 wk
22 May
5 wk after
Thyme
Thymus vulgaris
28 Feb – 14 Mar
8-10 wk
9 May
3 wk after
Oregano
Origanum vulgare
3 – 17 Mar
6-8 wk
28 Apr
1 wk after
17 May
5 wk after
Parsley
Petroselinum crispum
10 – 24 Feb
6-8 wk
7 Apr
2 wk before
18 Apr
1 wk after
Rosemary
Salvia rosmarinus
Fleece
2 Feb – 2 Mar
10-14 wk
11 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
10 – 17 May
3-4 wk
7 Jun
7 wk after
Cornflower
Centaurea cyanus
7 Apr
2 wk before
18 Apr
1 wk after
Statice
Limonium sinuatum
Greenhouse
8 – 22 Mar
8-10 wk
17 May
4 wk after
Sweet William
Dianthus barbatus
10 – 24 Feb
6-8 wk
7 Apr
2 wk before
30 Apr
2 wk after
Snow-on-the-mountain
Euphorbia marginata
Greenhouse
22 Mar – 5 Apr
6-8 wk
17 May
4 wk after
2 Jun
6 wk after
Dahlia
Dahlia × pinnata
Fleece
29 Mar – 12 Apr
6-8 wk
24 May
5 wk after
Dahlia (tubers)
Dahlia × pinnata
Fleece
18 Mar – 15 Apr
4-8 wk
13 May
3 wk after
13 May
3 wk after
Foxglove
Digitalis purpurea
27 Jan – 10 Feb
8-10 wk
7 Apr
2 wk before
5 May
3 wk after
Busy lizzie
Impatiens walleriana
Fleece
15 Mar – 12 Apr
8-12 wk
7 Jun
7 wk after
Creeping zinnia
Sanvitalia procumbens
Fleece
3 – 17 Apr
6-8 wk
29 May
5 wk after
Hyacinth bean
Dolichos lablab
Season too short
26 Apr – 10 May
4-6 wk
7 Jun
7 wk after
Chinese lantern
Physalis alkekengi
Fleece
2 – 16 Mar
8-10 wk
11 May
3 wk after
Love in a mist
Nigella damascena
18 Apr
1 wk after
Strawflower
Xerochrysum bracteatum
Greenhouse
22 Mar – 5 Apr
6-8 wk
17 May
4 wk after
2 Jun
6 wk after
Tall verbena
Verbena bonariensis
Fleece
16 Feb – 16 Mar
8-12 wk
11 May
3 wk after
Cardoon
Cynara cardunculus
Season too short
22 Feb – 22 Mar
8-12 wk
17 May
4 wk after
Regal-foxtail
Ptilotus nobilis
Season too short
6 Mar – 3 Apr
8-12 wk
29 May
5 wk after
Globe amaranth
Gomphrena globosa
Season too short
3 – 17 Apr
6-8 wk
29 May
5 wk after
Corn poppy
Papaver rhoeas
18 Apr
1 wk after
Snapdragon
Antirrhinum majus
21 Jan – 18 Feb
8-12 wk
15 Apr
1 wk before
30 Apr
2 wk after
Flossflower
Ageratum houstonianum
Greenhouse
20 Mar – 3 Apr
8-10 wk
29 May
5 wk after
Sweet pea
Lathyrus odoratus
10 Feb – 3 Mar
5-8 wk
7 Apr
2 wk before
Stock
Matthiola incana
18 Feb – 4 Mar
6-8 wk
15 Apr
1 wk before
5 May
3 wk after
Wormwood
Artemisia absinthium
10 – 24 Feb
6-8 wk
7 Apr
2 wk before
5 May
3 wk after
Mexican sunflower
Tithonia rotundifolia
Season too short
17 Apr – 1 May
4-6 wk
29 May
5 wk after
Pansy
Viola × wittrockiana
18 Jan – 1 Feb
8-10 wk
29 Mar
3 wk before
30 Apr
2 wk after
Petunia
Petunia
Greenhouse
22 Feb – 22 Mar
8-12 wk
17 May
4 wk after
Scabious
Scabiosa atropurpurea
Fleece
16 – 30 Mar
6-8 wk
11 May
3 wk after
27 May
5 wk after
Zinnia
Zinnia elegans
Fleece
17 Apr – 1 May
4-6 wk
29 May
5 wk after
Common morning glory
Ipomoea purpurea
Greenhouse
24 Apr – 8 May
3-5 wk
29 May
5 wk after
Cosmos
Cosmos bipinnatus
Greenhouse
5 – 19 Apr
4-6 wk
17 May
4 wk after
13 May
3 wk after
Scarlet milkweed
Asclepias curassavica
Season too short
15 Mar – 12 Apr
8-12 wk
7 Jun
7 wk after
Bee balm
Monarda didyma
28 Jan – 25 Feb
8-12 wk
22 Apr
Vid frost
17 May
5 wk after
Yarrow
Achillea millefolium
10 – 24 Feb
6-8 wk
7 Apr
2 wk before
5 May
3 wk after
Safflower
Carthamus tinctorius
7 Apr
2 wk before
18 Apr
1 wk after
Iceland poppy
Papaver nudicaule
1 – 15 Feb
6-8 wk
29 Mar
3 wk before
14 Apr
Vid frost
Bishop's flower
Ammi majus
22 Mar – 5 Apr
4-6 wk
3 May
1 wk after
5 May
3 wk after
Drumsticks
Pycnosorus globosus
Season too short
6 – 20 Mar
10-12 wk
29 May
5 wk after
Sunflower
Helianthus annuus
Greenhouse
19 – 26 Apr
3-4 wk
17 May
4 wk after
2 May
1 wk after
China aster
Callistephus chinensis
Greenhouse
22 Mar – 5 Apr
6-8 wk
17 May
4 wk after
13 May
3 wk after
Annual phlox
Phlox drummondii
2 – 16 Apr
6-8 wk
28 May
5 wk after
2 Jun
7 wk after
Hollyhock
Alcea rosea
10 – 24 Feb
6-8 wk
7 Apr
2 wk before
5 May
3 wk after
Delphinium
Delphinium elatum
14 Feb – 14 Mar
8-12 wk
9 May
3 wk after
17 May
5 wk after
African marigold
Tagetes erecta
Fleece
3 – 17 Apr
6-8 wk
29 May
5 wk after
Black-eyed Susan
Rudbeckia hirta
27 Mar – 10 Apr
6-8 wk
22 May
5 wk after
2 Jun
7 wk after
Woodland sage
Salvia nemorosa
17 Feb – 3 Mar
8-10 wk
28 Apr
1 wk after
17 May
5 wk after
Black-eyed susan vine
Thunbergia alata
Greenhouse
20 Mar – 17 Apr
6-10 wk
29 May
5 wk after
California goldenpoppy
Eschscholzia californica
18 Apr
1 wk after
Painted tongue
Salpiglossis sinuata
Greenhouse
8 – 22 Mar
8-10 wk
17 May
4 wk after
Water forget-me-not
Myosotis scorpioides
10 – 24 Feb
6-8 wk
7 Apr
2 wk before
5 May
3 wk after
Current date Soon Date passed