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Rel. frost
Last spring frost (0°C) 6 Apr Frost 3 of 4 years · 20 years of data
Frost-free season 199 days 6 Apr – 22 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)
20 Mar – 3 Apr
5-7 wk
8 May
5 wk after
31 Mar
1 wk before
Broccoli
Brassica oleracea (Italica-gruppen)
15 – 29 Mar
4-6 wk
26 Apr
3 wk after
31 Mar
1 wk before
Chili pepper
Capsicum annuum
Greenhouse
22 Feb – 22 Mar
8-12 wk
17 May
6 wk after
Kale
Brassica oleracea (Curly Kale-gruppen)
17 – 31 Jan
5-7 wk
7 Mar
4 wk before
24 Mar
2 wk before
Cucumber
Cucumis sativus
Fleece
4 – 11 May
3-4 wk
1 Jun
8 wk after
Florence Fennel
Foeniculum vulgare
Greenhouse
12 – 19 Apr
4-5 wk
17 May
6 wk after
19 Apr
2 wk after
Butter bean
Phaseolus lunatus
Greenhouse
19 – 26 Apr
3-4 wk
17 May
6 wk after
Onion
Allium cepa (Cepa-gruppen)
12 Jan – 9 Feb
8-12 wk
6 Apr
Vid frost
19 Apr
2 wk after
Onion (sets)
Allium cepa (Cepa-gruppen)
19 Apr
2 wk after
19 Apr
2 wk after
Sweetcorn
Zea mays
Fleece
24 Apr – 1 May
3-4 wk
22 May
7 wk after
Chard
Beta vulgaris (Flavescens-gruppen)
10 – 17 Apr
3-4 wk
8 May
5 wk after
19 Apr
2 wk after
Carrot
Daucus carota subsp. sativus var. sativus
24 Mar
2 wk before
Cavolo nero
Brassica oleracea (Palm Kale-gruppen)
17 – 31 Jan
5-7 wk
7 Mar
4 wk before
24 Mar
2 wk before
Potato
Solanum tuberosum
28 Feb – 14 Mar
4-6 wk
11 Apr
1 wk after
11 Apr
1 wk after
Ornamental Kale
Brassica oleracea (Ornamental-gruppen)
17 – 31 Jan
5-7 wk
7 Mar
4 wk before
31 Mar
1 wk before
Pumpkin
Cucurbita pepo
Fleece
4 – 11 May
3-4 wk
1 Jun
8 wk after
Beetroot
Beta vulgaris (Conditiva-gruppen)
10 – 17 Apr
3-4 wk
8 May
5 wk after
19 Apr
2 wk after
Red Cabbage
Brassica oleracea (Red Cabbage-gruppen)
15 – 29 Mar
4-6 wk
26 Apr
3 wk after
Lettuce
Lactuca sativa
28 Feb – 7 Mar
3-4 wk
28 Mar
1 wk before
31 Mar
1 wk before
Savoy Cabbage
Brassica oleracea (Savoy Cabbage-gruppen)
14 – 28 Feb
4-6 wk
28 Mar
1 wk before
Shallot (bulbs)
Allium cepa (Aggregatum-gruppen)
24 Feb – 10 Mar
2-4 wk
24 Mar
2 wk before
24 Mar
2 wk before
Shallot (sets)
Allium cepa (Aggregatum-gruppen)
31 Mar
1 wk before
31 Mar
1 wk before
Spinach
Spinacia oleracea
17 – 24 Feb
3-4 wk
17 Mar
3 wk before
17 Mar
3 wk before
Sweet potato
Ipomoea batatas
8 – 22 May
4-6 wk
19 Jun
11 wk after
Tomato
Solanum lycopersicum
Fleece
22 Mar – 5 Apr
6-8 wk
17 May
6 wk after
Tomatillo
Physalis ixocarpa
French bean
Phaseolus vulgaris
4 – 18 May
2-4 wk
1 Jun
8 wk after
17 May
6 wk after
White Cabbage
Brassica oleracea (White Cabbage-gruppen)
15 – 29 Mar
4-6 wk
26 Apr
3 wk after
Pea
Pisum sativum
17 – 24 Feb
3-4 wk
17 Mar
3 wk before
31 Mar
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
Fleece
10 – 24 Apr
4-6 wk
22 May
7 wk after
Lemon balm
Melissa officinalis
26 Jan – 9 Feb
8-10 wk
6 Apr
Vid frost
2 May
4 wk after
Dill
Anethum graveolens
31 Mar
1 wk before
Chives
Allium schoenoprasum
10 – 24 Jan
6-8 wk
7 Mar
4 wk before
31 Mar
1 wk before
Spearmint
Mentha spicata
23 Dec – 20 Jan
8-12 wk
17 Mar
3 wk before
2 May
4 wk after
Coriander
Coriandrum sativum
19 Apr
2 wk after
Sage
Salvia officinalis
27 Feb – 13 Mar
8-10 wk
8 May
5 wk after
Thyme
Thymus vulgaris
15 Feb – 1 Mar
8-10 wk
26 Apr
3 wk after
Oregano
Origanum vulgare
18 Feb – 4 Mar
6-8 wk
15 Apr
1 wk after
2 May
4 wk after
Parsley
Petroselinum crispum
20 Jan – 3 Feb
6-8 wk
17 Mar
3 wk before
31 Mar
1 wk before
Rosemary
Salvia rosmarinus
30 Jan – 27 Feb
10-14 wk
8 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
Season too short
4 – 11 May
3-4 wk
1 Jun
8 wk after
Cornflower
Centaurea cyanus
17 Mar
3 wk before
31 Mar
1 wk before
Statice
Limonium sinuatum
Fleece
8 – 22 Mar
8-10 wk
17 May
6 wk after
Sweet William
Dianthus barbatus
20 Jan – 3 Feb
6-8 wk
17 Mar
3 wk before
11 Apr
1 wk after
Snow-on-the-mountain
Euphorbia marginata
Fleece
22 Mar – 5 Apr
6-8 wk
17 May
6 wk after
22 May
7 wk after
Dahlia
Dahlia × pinnata
30 Mar – 13 Apr
6-8 wk
25 May
7 wk after
Dahlia (tubers)
Dahlia × pinnata
7 Mar – 4 Apr
4-8 wk
2 May
4 wk after
2 May
4 wk after
Foxglove
Digitalis purpurea
6 – 20 Jan
8-10 wk
17 Mar
3 wk before
19 Apr
2 wk after
Busy lizzie
Impatiens walleriana
Fleece
9 Mar – 6 Apr
8-12 wk
1 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
20 Apr – 4 May
4-6 wk
1 Jun
8 wk after
Chinese lantern
Physalis alkekengi
27 Feb – 13 Mar
8-10 wk
8 May
5 wk after
Love in a mist
Nigella damascena
31 Mar
1 wk before
Strawflower
Xerochrysum bracteatum
Fleece
22 Mar – 5 Apr
6-8 wk
17 May
6 wk after
22 May
7 wk after
Tall verbena
Verbena bonariensis
13 Feb – 13 Mar
8-12 wk
8 May
5 wk after
Cardoon
Cynara cardunculus
Greenhouse
7 Feb – 7 Mar
8-12 wk
2 May
4 wk after
Regal-foxtail
Ptilotus nobilis
Greenhouse
22 Feb – 22 Mar
8-12 wk
17 May
6 wk after
Globe amaranth
Gomphrena globosa
Greenhouse
22 Mar – 5 Apr
6-8 wk
17 May
6 wk after
Corn poppy
Papaver rhoeas
31 Mar
1 wk before
Snapdragon
Antirrhinum majus
3 – 31 Jan
8-12 wk
28 Mar
1 wk before
11 Apr
1 wk after
Flossflower
Ageratum houstonianum
Greenhouse
8 – 22 Mar
8-10 wk
17 May
6 wk after
Sweet pea
Lathyrus odoratus
20 Jan – 10 Feb
5-8 wk
17 Mar
3 wk before
Stock
Matthiola incana
31 Jan – 14 Feb
6-8 wk
28 Mar
1 wk before
19 Apr
2 wk after
Wormwood
Artemisia absinthium
20 Jan – 3 Feb
6-8 wk
17 Mar
3 wk before
19 Apr
2 wk after
Mexican sunflower
Tithonia rotundifolia
Greenhouse
5 – 19 Apr
4-6 wk
17 May
6 wk after
Pansy
Viola × wittrockiana
27 Dec – 10 Jan
8-10 wk
7 Mar
4 wk before
11 Apr
1 wk after
Petunia
Petunia
Fleece
22 Feb – 22 Mar
8-12 wk
17 May
6 wk after
Scabious
Scabiosa atropurpurea
13 – 27 Mar
6-8 wk
8 May
5 wk after
17 May
6 wk after
Zinnia
Zinnia elegans
Fleece
5 – 19 Apr
4-6 wk
17 May
6 wk after
Common morning glory
Ipomoea purpurea
Fleece
27 Apr – 11 May
3-5 wk
1 Jun
8 wk after
Cosmos
Cosmos bipinnatus
Fleece
5 – 19 Apr
4-6 wk
17 May
6 wk after
2 May
4 wk after
Scarlet milkweed
Asclepias curassavica
Greenhouse
9 Mar – 6 Apr
8-12 wk
1 Jun
8 wk after
Bee balm
Monarda didyma
12 Jan – 9 Feb
8-12 wk
6 Apr
Vid frost
2 May
4 wk after
Yarrow
Achillea millefolium
20 Jan – 3 Feb
6-8 wk
17 Mar
3 wk before
19 Apr
2 wk after
Safflower
Carthamus tinctorius
17 Mar
3 wk before
31 Mar
1 wk before
Iceland poppy
Papaver nudicaule
10 – 24 Jan
6-8 wk
7 Mar
4 wk before
24 Mar
2 wk before
Bishop's flower
Ammi majus
10 – 24 Mar
4-6 wk
21 Apr
2 wk after
19 Apr
2 wk after
Drumsticks
Pycnosorus globosus
Greenhouse
22 Feb – 8 Mar
10-12 wk
17 May
6 wk after
Sunflower
Helianthus annuus
Fleece
19 – 26 Apr
3-4 wk
17 May
6 wk after
19 Apr
2 wk after
China aster
Callistephus chinensis
Fleece
22 Mar – 5 Apr
6-8 wk
17 May
6 wk after
2 May
4 wk after
Annual phlox
Phlox drummondii
22 Mar – 5 Apr
6-8 wk
17 May
6 wk after
17 May
6 wk after
Hollyhock
Alcea rosea
20 Jan – 3 Feb
6-8 wk
17 Mar
3 wk before
19 Apr
2 wk after
Delphinium
Delphinium elatum
1 Feb – 1 Mar
8-12 wk
26 Apr
3 wk after
2 May
4 wk after
African marigold
Tagetes erecta
Fleece
22 Mar – 5 Apr
6-8 wk
17 May
6 wk after
Black-eyed Susan
Rudbeckia hirta
13 – 27 Mar
6-8 wk
8 May
5 wk after
17 May
6 wk after
Woodland sage
Salvia nemorosa
4 – 18 Feb
8-10 wk
15 Apr
1 wk after
2 May
4 wk after
Black-eyed susan vine
Thunbergia alata
Greenhouse
8 Mar – 5 Apr
6-10 wk
17 May
6 wk after
California goldenpoppy
Eschscholzia californica
31 Mar
1 wk before
Painted tongue
Salpiglossis sinuata
Fleece
8 – 22 Mar
8-10 wk
17 May
6 wk after
Water forget-me-not
Myosotis scorpioides
20 Jan – 3 Feb
6-8 wk
17 Mar
3 wk before
19 Apr
2 wk after
Current date Soon Date passed