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Rel. frost
Last spring frost (0°C) 5 Apr Frost 3 of 4 years · 20 years of data
Frost-free season 196 days 5 Apr – 18 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
7 – 21 Mar
5-7 wk
25 Apr
3 wk after
16 Mar
3 wk before
Broccoli
Brassica oleracea (Italica-gruppen)
14 – 28 Mar
4-6 wk
25 Apr
3 wk after
30 Mar
1 wk before
Chili pepper
Capsicum annuum
Fleece
8 Mar – 5 Apr
8-12 wk
31 May
8 wk after
Kale
Brassica oleracea (Curly Kale-gruppen)
16 – 30 Jan
5-7 wk
6 Mar
4 wk before
23 Mar
2 wk before
Cucumber
Cucumis sativus
Fleece
3 – 10 May
3-4 wk
31 May
8 wk after
Florence Fennel
Foeniculum vulgare
Fleece
26 Apr – 3 May
4-5 wk
31 May
8 wk after
1 May
4 wk after
Butter bean
Phaseolus lunatus
Fleece
3 – 10 May
3-4 wk
31 May
8 wk after
Onion
Allium cepa (Cepa-gruppen)
11 Jan – 8 Feb
8-12 wk
5 Apr
Vid frost
18 Apr
2 wk after
Onion (sets)
Allium cepa (Cepa-gruppen)
18 Apr
2 wk after
18 Apr
2 wk after
Sweetcorn
Zea mays
Fleece
23 – 30 Apr
3-4 wk
21 May
7 wk after
Chard
Beta vulgaris (Flavescens-gruppen)
9 – 16 Apr
3-4 wk
7 May
5 wk after
18 Apr
2 wk after
Carrot
Daucus carota subsp. sativus var. sativus
23 Mar
2 wk before
Cavolo nero
Brassica oleracea (Palm Kale-gruppen)
16 – 30 Jan
5-7 wk
6 Mar
4 wk before
23 Mar
2 wk before
Potato
Solanum tuberosum
27 Feb – 13 Mar
4-6 wk
10 Apr
1 wk after
10 Apr
1 wk after
Ornamental Kale
Brassica oleracea (Ornamental-gruppen)
16 – 30 Jan
5-7 wk
6 Mar
4 wk before
30 Mar
1 wk before
Pumpkin
Cucurbita pepo
Fleece
3 – 10 May
3-4 wk
31 May
8 wk after
Beetroot
Beta vulgaris (Conditiva-gruppen)
9 – 16 Apr
3-4 wk
7 May
5 wk after
18 Apr
2 wk after
Red Cabbage
Brassica oleracea (Red Cabbage-gruppen)
14 – 28 Mar
4-6 wk
25 Apr
3 wk after
Lettuce
Lactuca sativa
27 Feb – 6 Mar
3-4 wk
27 Mar
1 wk before
30 Mar
1 wk before
Savoy Cabbage
Brassica oleracea (Savoy Cabbage-gruppen)
13 – 27 Feb
4-6 wk
27 Mar
1 wk before
Shallot (bulbs)
Allium cepa (Aggregatum-gruppen)
23 Feb – 9 Mar
2-4 wk
23 Mar
2 wk before
23 Mar
2 wk before
Shallot (sets)
Allium cepa (Aggregatum-gruppen)
30 Mar
1 wk before
30 Mar
1 wk before
Spinach
Spinacia oleracea
16 – 23 Feb
3-4 wk
16 Mar
3 wk before
16 Mar
3 wk before
Sweet potato
Ipomoea batatas
7 – 21 May
4-6 wk
18 Jun
11 wk after
Tomato
Solanum lycopersicum
5 – 19 Apr
6-8 wk
31 May
8 wk after
Tomatillo
Physalis ixocarpa
French bean
Phaseolus vulgaris
3 – 17 May
2-4 wk
31 May
8 wk after
16 May
6 wk after
White Cabbage
Brassica oleracea (White Cabbage-gruppen)
14 – 28 Mar
4-6 wk
25 Apr
3 wk after
Pea
Pisum sativum
16 – 23 Feb
3-4 wk
16 Mar
3 wk before
30 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
9 – 23 Apr
4-6 wk
21 May
7 wk after
Lemon balm
Melissa officinalis
25 Jan – 8 Feb
8-10 wk
5 Apr
Vid frost
1 May
4 wk after
Dill
Anethum graveolens
30 Mar
1 wk before
Chives
Allium schoenoprasum
9 – 23 Jan
6-8 wk
6 Mar
4 wk before
30 Mar
1 wk before
Spearmint
Mentha spicata
22 Dec – 19 Jan
8-12 wk
16 Mar
3 wk before
1 May
4 wk after
Coriander
Coriandrum sativum
18 Apr
2 wk after
Sage
Salvia officinalis
26 Feb – 12 Mar
8-10 wk
7 May
5 wk after
Thyme
Thymus vulgaris
14 – 28 Feb
8-10 wk
25 Apr
3 wk after
Oregano
Origanum vulgare
17 Feb – 3 Mar
6-8 wk
14 Apr
1 wk after
1 May
4 wk after
Parsley
Petroselinum crispum
19 Jan – 2 Feb
6-8 wk
16 Mar
3 wk before
30 Mar
1 wk before
Rosemary
Salvia rosmarinus
29 Jan – 26 Feb
10-14 wk
7 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
3 – 10 May
3-4 wk
31 May
8 wk after
Cornflower
Centaurea cyanus
16 Mar
3 wk before
30 Mar
1 wk before
Statice
Limonium sinuatum
22 Mar – 5 Apr
8-10 wk
31 May
8 wk after
Sweet William
Dianthus barbatus
19 Jan – 2 Feb
6-8 wk
16 Mar
3 wk before
10 Apr
1 wk after
Snow-on-the-mountain
Euphorbia marginata
5 – 19 Apr
6-8 wk
31 May
8 wk after
18 Jun
11 wk after
Dahlia
Dahlia × pinnata
29 Mar – 12 Apr
6-8 wk
24 May
7 wk after
Dahlia (tubers)
Dahlia × pinnata
6 Mar – 3 Apr
4-8 wk
1 May
4 wk after
1 May
4 wk after
Foxglove
Digitalis purpurea
5 – 19 Jan
8-10 wk
16 Mar
3 wk before
18 Apr
2 wk after
Busy lizzie
Impatiens walleriana
Fleece
8 Mar – 5 Apr
8-12 wk
31 May
8 wk after
Creeping zinnia
Sanvitalia procumbens
5 – 19 Apr
6-8 wk
31 May
8 wk after
Hyacinth bean
Dolichos lablab
Season too short
19 Apr – 3 May
4-6 wk
31 May
8 wk after
Chinese lantern
Physalis alkekengi
26 Feb – 12 Mar
8-10 wk
7 May
5 wk after
Love in a mist
Nigella damascena
30 Mar
1 wk before
Strawflower
Xerochrysum bracteatum
Fleece
21 Mar – 4 Apr
6-8 wk
16 May
6 wk after
21 May
7 wk after
Tall verbena
Verbena bonariensis
12 Feb – 12 Mar
8-12 wk
7 May
5 wk after
Cardoon
Cynara cardunculus
Greenhouse
6 Feb – 6 Mar
8-12 wk
1 May
4 wk after
Regal-foxtail
Ptilotus nobilis
Greenhouse
21 Feb – 21 Mar
8-12 wk
16 May
6 wk after
Globe amaranth
Gomphrena globosa
Fleece
5 – 19 Apr
6-8 wk
31 May
8 wk after
Corn poppy
Papaver rhoeas
30 Mar
1 wk before
Snapdragon
Antirrhinum majus
2 – 30 Jan
8-12 wk
27 Mar
1 wk before
10 Apr
1 wk after
Flossflower
Ageratum houstonianum
Fleece
22 Mar – 5 Apr
8-10 wk
31 May
8 wk after
Sweet pea
Lathyrus odoratus
19 Jan – 9 Feb
5-8 wk
16 Mar
3 wk before
Stock
Matthiola incana
30 Jan – 13 Feb
6-8 wk
27 Mar
1 wk before
18 Apr
2 wk after
Wormwood
Artemisia absinthium
19 Jan – 2 Feb
6-8 wk
16 Mar
3 wk before
18 Apr
2 wk after
Mexican sunflower
Tithonia rotundifolia
Fleece
19 Apr – 3 May
4-6 wk
31 May
8 wk after
Pansy
Viola × wittrockiana
26 Dec – 9 Jan
8-10 wk
6 Mar
4 wk before
10 Apr
1 wk after
Petunia
Petunia
Fleece
21 Feb – 21 Mar
8-12 wk
16 May
6 wk after
Scabious
Scabiosa atropurpurea
12 – 26 Mar
6-8 wk
7 May
5 wk after
16 May
6 wk after
Zinnia
Zinnia elegans
19 Apr – 3 May
4-6 wk
31 May
8 wk after
Common morning glory
Ipomoea purpurea
Fleece
26 Apr – 10 May
3-5 wk
31 May
8 wk after
Cosmos
Cosmos bipinnatus
19 Apr – 3 May
4-6 wk
31 May
8 wk after
16 May
6 wk after
Scarlet milkweed
Asclepias curassavica
Greenhouse
8 Mar – 5 Apr
8-12 wk
31 May
8 wk after
Bee balm
Monarda didyma
11 Jan – 8 Feb
8-12 wk
5 Apr
Vid frost
1 May
4 wk after
Yarrow
Achillea millefolium
19 Jan – 2 Feb
6-8 wk
16 Mar
3 wk before
18 Apr
2 wk after
Safflower
Carthamus tinctorius
16 Mar
3 wk before
30 Mar
1 wk before
Iceland poppy
Papaver nudicaule
9 – 23 Jan
6-8 wk
6 Mar
4 wk before
23 Mar
2 wk before
Bishop's flower
Ammi majus
9 – 23 Mar
4-6 wk
20 Apr
2 wk after
18 Apr
2 wk after
Drumsticks
Pycnosorus globosus
Greenhouse
21 Feb – 7 Mar
10-12 wk
16 May
6 wk after
Sunflower
Helianthus annuus
Fleece
18 – 25 Apr
3-4 wk
16 May
6 wk after
18 Apr
2 wk after
China aster
Callistephus chinensis
Fleece
21 Mar – 4 Apr
6-8 wk
16 May
6 wk after
1 May
4 wk after
Annual phlox
Phlox drummondii
21 Mar – 4 Apr
6-8 wk
16 May
6 wk after
16 May
6 wk after
Hollyhock
Alcea rosea
19 Jan – 2 Feb
6-8 wk
16 Mar
3 wk before
18 Apr
2 wk after
Delphinium
Delphinium elatum
31 Jan – 28 Feb
8-12 wk
25 Apr
3 wk after
1 May
4 wk after
African marigold
Tagetes erecta
5 – 19 Apr
6-8 wk
31 May
8 wk after
Black-eyed Susan
Rudbeckia hirta
12 – 26 Mar
6-8 wk
7 May
5 wk after
16 May
6 wk after
Woodland sage
Salvia nemorosa
3 – 17 Feb
8-10 wk
14 Apr
1 wk after
1 May
4 wk after
Black-eyed susan vine
Thunbergia alata
Fleece
22 Mar – 19 Apr
6-10 wk
31 May
8 wk after
California goldenpoppy
Eschscholzia californica
30 Mar
1 wk before
Painted tongue
Salpiglossis sinuata
22 Mar – 5 Apr
8-10 wk
31 May
8 wk after
Water forget-me-not
Myosotis scorpioides
19 Jan – 2 Feb
6-8 wk
16 Mar
3 wk before
18 Apr
2 wk after
Current date Soon Date passed