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Rel. frost
Last spring frost (0°C) 13 Apr Frost 1 of 4 years · 20 years of data
Frost-free season 226 days 13 Apr – 25 Nov
Probability that frost is over

75% = 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)
27 Mar – 10 Apr
5-7 wk
15 May
5 wk after
7 Apr
1 wk before
Broccoli
Brassica oleracea (Italica-gruppen)
22 Mar – 5 Apr
4-6 wk
3 May
3 wk after
7 Apr
1 wk before
Chili pepper
Capsicum annuum
27 Mar – 24 Apr
8-12 wk
19 Jun
10 wk after
Kale
Brassica oleracea (Curly Kale-gruppen)
24 Jan – 7 Feb
5-7 wk
14 Mar
4 wk before
31 Mar
2 wk before
Cucumber
Cucumis sativus
22 – 29 May
3-4 wk
19 Jun
10 wk after
Florence Fennel
Foeniculum vulgare
15 – 22 May
4-5 wk
19 Jun
10 wk after
24 May
6 wk after
Butter bean
Phaseolus lunatus
Greenhouse
26 Apr – 3 May
3-4 wk
24 May
6 wk after
Onion
Allium cepa (Cepa-gruppen)
19 Jan – 16 Feb
8-12 wk
13 Apr
Vid frost
26 Apr
2 wk after
Onion (sets)
Allium cepa (Cepa-gruppen)
26 Apr
2 wk after
26 Apr
2 wk after
Sweetcorn
Zea mays
Fleece
1 – 8 May
3-4 wk
29 May
7 wk after
Chard
Beta vulgaris (Flavescens-gruppen)
17 – 24 Apr
3-4 wk
15 May
5 wk after
26 Apr
2 wk after
Carrot
Daucus carota subsp. sativus var. sativus
31 Mar
2 wk before
Cavolo nero
Brassica oleracea (Palm Kale-gruppen)
24 Jan – 7 Feb
5-7 wk
14 Mar
4 wk before
31 Mar
2 wk before
Potato
Solanum tuberosum
7 – 21 Mar
4-6 wk
18 Apr
1 wk after
18 Apr
1 wk after
Ornamental Kale
Brassica oleracea (Ornamental-gruppen)
24 Jan – 7 Feb
5-7 wk
14 Mar
4 wk before
7 Apr
1 wk before
Pumpkin
Cucurbita pepo
22 – 29 May
3-4 wk
19 Jun
10 wk after
Beetroot
Beta vulgaris (Conditiva-gruppen)
17 – 24 Apr
3-4 wk
15 May
5 wk after
26 Apr
2 wk after
Red Cabbage
Brassica oleracea (Red Cabbage-gruppen)
22 Mar – 5 Apr
4-6 wk
3 May
3 wk after
Lettuce
Lactuca sativa
7 – 14 Mar
3-4 wk
4 Apr
1 wk before
7 Apr
1 wk before
Savoy Cabbage
Brassica oleracea (Savoy Cabbage-gruppen)
21 Feb – 7 Mar
4-6 wk
4 Apr
1 wk before
Shallot (bulbs)
Allium cepa (Aggregatum-gruppen)
3 – 17 Mar
2-4 wk
31 Mar
2 wk before
31 Mar
2 wk before
Shallot (sets)
Allium cepa (Aggregatum-gruppen)
7 Apr
1 wk before
7 Apr
1 wk before
Spinach
Spinacia oleracea
24 Feb – 3 Mar
3-4 wk
24 Mar
3 wk before
24 Mar
3 wk before
Sweet potato
Ipomoea batatas
15 – 29 May
4-6 wk
26 Jun
11 wk after
Tomato
Solanum lycopersicum
13 – 27 Apr
6-8 wk
8 Jun
8 wk after
Tomatillo
Physalis ixocarpa
French bean
Phaseolus vulgaris
11 – 25 May
2-4 wk
8 Jun
8 wk after
24 May
6 wk after
White Cabbage
Brassica oleracea (White Cabbage-gruppen)
22 Mar – 5 Apr
4-6 wk
3 May
3 wk after
Pea
Pisum sativum
24 Feb – 3 Mar
3-4 wk
24 Mar
3 wk before
7 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
Fleece
17 Apr – 1 May
4-6 wk
29 May
7 wk after
Lemon balm
Melissa officinalis
2 – 16 Feb
8-10 wk
13 Apr
Vid frost
9 May
4 wk after
Dill
Anethum graveolens
7 Apr
1 wk before
Chives
Allium schoenoprasum
17 – 31 Jan
6-8 wk
14 Mar
4 wk before
7 Apr
1 wk before
Spearmint
Mentha spicata
30 Dec – 27 Jan
8-12 wk
24 Mar
3 wk before
9 May
4 wk after
Coriander
Coriandrum sativum
26 Apr
2 wk after
Sage
Salvia officinalis
6 – 20 Mar
8-10 wk
15 May
5 wk after
Thyme
Thymus vulgaris
22 Feb – 8 Mar
8-10 wk
3 May
3 wk after
Oregano
Origanum vulgare
25 Feb – 11 Mar
6-8 wk
22 Apr
1 wk after
9 May
4 wk after
Parsley
Petroselinum crispum
27 Jan – 10 Feb
6-8 wk
24 Mar
3 wk before
7 Apr
1 wk before
Rosemary
Salvia rosmarinus
6 Feb – 6 Mar
10-14 wk
15 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
Fleece
22 – 29 May
3-4 wk
19 Jun
10 wk after
Cornflower
Centaurea cyanus
24 Mar
3 wk before
7 Apr
1 wk before
Statice
Limonium sinuatum
30 Mar – 13 Apr
8-10 wk
8 Jun
8 wk after
Sweet William
Dianthus barbatus
27 Jan – 10 Feb
6-8 wk
24 Mar
3 wk before
18 Apr
1 wk after
Snow-on-the-mountain
Euphorbia marginata
13 – 27 Apr
6-8 wk
8 Jun
8 wk after
26 Jun
11 wk after
Dahlia
Dahlia × pinnata
6 – 20 Apr
6-8 wk
1 Jun
7 wk after
Dahlia (tubers)
Dahlia × pinnata
14 Mar – 11 Apr
4-8 wk
9 May
4 wk after
9 May
4 wk after
Foxglove
Digitalis purpurea
13 – 27 Jan
8-10 wk
24 Mar
3 wk before
26 Apr
2 wk after
Busy lizzie
Impatiens walleriana
27 Mar – 24 Apr
8-12 wk
19 Jun
10 wk after
Creeping zinnia
Sanvitalia procumbens
13 – 27 Apr
6-8 wk
8 Jun
8 wk after
Hyacinth bean
Dolichos lablab
Greenhouse
27 Apr – 11 May
4-6 wk
8 Jun
8 wk after
Chinese lantern
Physalis alkekengi
6 – 20 Mar
8-10 wk
15 May
5 wk after
Love in a mist
Nigella damascena
7 Apr
1 wk before
Strawflower
Xerochrysum bracteatum
13 – 27 Apr
6-8 wk
8 Jun
8 wk after
26 Jun
11 wk after
Tall verbena
Verbena bonariensis
20 Feb – 20 Mar
8-12 wk
15 May
5 wk after
Cardoon
Cynara cardunculus
Fleece
1 – 29 Mar
8-12 wk
24 May
6 wk after
Regal-foxtail
Ptilotus nobilis
Fleece
16 Mar – 13 Apr
8-12 wk
8 Jun
8 wk after
Globe amaranth
Gomphrena globosa
24 Apr – 8 May
6-8 wk
19 Jun
10 wk after
Corn poppy
Papaver rhoeas
7 Apr
1 wk before
Snapdragon
Antirrhinum majus
10 Jan – 7 Feb
8-12 wk
4 Apr
1 wk before
18 Apr
1 wk after
Flossflower
Ageratum houstonianum
10 – 24 Apr
8-10 wk
19 Jun
10 wk after
Sweet pea
Lathyrus odoratus
27 Jan – 17 Feb
5-8 wk
24 Mar
3 wk before
Stock
Matthiola incana
7 – 21 Feb
6-8 wk
4 Apr
1 wk before
26 Apr
2 wk after
Wormwood
Artemisia absinthium
27 Jan – 10 Feb
6-8 wk
24 Mar
3 wk before
26 Apr
2 wk after
Mexican sunflower
Tithonia rotundifolia
8 – 22 May
4-6 wk
19 Jun
10 wk after
Pansy
Viola × wittrockiana
3 – 17 Jan
8-10 wk
14 Mar
4 wk before
18 Apr
1 wk after
Petunia
Petunia
16 Mar – 13 Apr
8-12 wk
8 Jun
8 wk after
Scabious
Scabiosa atropurpurea
20 Mar – 3 Apr
6-8 wk
15 May
5 wk after
24 May
6 wk after
Zinnia
Zinnia elegans
27 Apr – 11 May
4-6 wk
8 Jun
8 wk after
Common morning glory
Ipomoea purpurea
15 – 29 May
3-5 wk
19 Jun
10 wk after
Cosmos
Cosmos bipinnatus
27 Apr – 11 May
4-6 wk
8 Jun
8 wk after
24 May
6 wk after
Scarlet milkweed
Asclepias curassavica
Fleece
27 Mar – 24 Apr
8-12 wk
19 Jun
10 wk after
Bee balm
Monarda didyma
19 Jan – 16 Feb
8-12 wk
13 Apr
Vid frost
9 May
4 wk after
Yarrow
Achillea millefolium
27 Jan – 10 Feb
6-8 wk
24 Mar
3 wk before
26 Apr
2 wk after
Safflower
Carthamus tinctorius
24 Mar
3 wk before
7 Apr
1 wk before
Iceland poppy
Papaver nudicaule
17 – 31 Jan
6-8 wk
14 Mar
4 wk before
31 Mar
2 wk before
Bishop's flower
Ammi majus
17 – 31 Mar
4-6 wk
28 Apr
2 wk after
26 Apr
2 wk after
Drumsticks
Pycnosorus globosus
Fleece
16 – 30 Mar
10-12 wk
8 Jun
8 wk after
Sunflower
Helianthus annuus
11 – 18 May
3-4 wk
8 Jun
8 wk after
9 May
4 wk after
China aster
Callistephus chinensis
13 – 27 Apr
6-8 wk
8 Jun
8 wk after
24 May
6 wk after
Annual phlox
Phlox drummondii
29 Mar – 12 Apr
6-8 wk
24 May
6 wk after
24 May
6 wk after
Hollyhock
Alcea rosea
27 Jan – 10 Feb
6-8 wk
24 Mar
3 wk before
26 Apr
2 wk after
Delphinium
Delphinium elatum
8 Feb – 8 Mar
8-12 wk
3 May
3 wk after
9 May
4 wk after
African marigold
Tagetes erecta
13 – 27 Apr
6-8 wk
8 Jun
8 wk after
Black-eyed Susan
Rudbeckia hirta
20 Mar – 3 Apr
6-8 wk
15 May
5 wk after
24 May
6 wk after
Woodland sage
Salvia nemorosa
11 – 25 Feb
8-10 wk
22 Apr
1 wk after
9 May
4 wk after
Black-eyed susan vine
Thunbergia alata
10 Apr – 8 May
6-10 wk
19 Jun
10 wk after
California goldenpoppy
Eschscholzia californica
7 Apr
1 wk before
Painted tongue
Salpiglossis sinuata
30 Mar – 13 Apr
8-10 wk
8 Jun
8 wk after
Water forget-me-not
Myosotis scorpioides
27 Jan – 10 Feb
6-8 wk
24 Mar
3 wk before
26 Apr
2 wk after
Current date Soon Date passed