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Rel. frost
Last spring frost (0°C) 12 Mar Frost 9 of 10 years · 20 years of data
Frost-free season 233 days 12 Mar – 31 Oct
Probability that frost is over

10% = Half of years are frost-free by this date. More about frost & season →

Custom date

Vegetables

Plant Sow indoors Transplant Direct sow
Earliest Latest Growing time Earliest Latest Rel. frost Earliest Latest Rel. frost
Cauliflower
Brassica oleracea (Botrytis-gruppen)
23 Feb – 9 Mar
21 Jun
5-7 wk
13 Apr
26 Jul
5 wk after
6 Mar
16 Jul
1 wk before
Broccoli
Brassica oleracea (Italica-gruppen)
18 Feb – 4 Mar
3 Jul
4-6 wk
1 Apr
31 Jul
3 wk after
6 Mar
21 Jul
1 wk before
Chili pepper
Capsicum annuum
Greenhouse
28 Jan – 25 Feb
2 Apr
8-12 wk
22 Apr
28 May
6 wk after
Curly Kale
Brassica oleracea (Curly Kale-gruppen)
23 Dec – 6 Jan
16 Jun
5-7 wk
10 Feb
21 Jul
4 wk before
27 Feb
11 Jul
2 wk before
Garden cucumber
Cucumis sativus
Fleece
9 – 16 Apr
27 May
3-4 wk
7 May
17 Jun
8 wk after
Florence Fennel
Foeniculum vulgare
13 – 20 Apr
13 Jun
4-5 wk
18 May
11 Jul
10 wk after
22 Apr
1 Jul
6 wk after
Butter bean
Phaseolus lunatus
Greenhouse
24 Apr – 1 May
14 May
3-4 wk
22 May
4 Jun
10 wk after
Onion
Allium cepa (Cepa-gruppen)
18 Dec – 15 Jan
6 Apr
8-12 wk
12 Mar
1 Jun
Vid frost
25 Mar
22 May
2 wk after
Onion (sets)
Allium cepa (Cepa-gruppen)
6 Mar
21 Jun
1 wk before
6 Mar
11 Jun
1 wk before
Maize
Zea mays
Fleece
25 Mar – 1 Apr
17 May
3-4 wk
22 Apr
7 Jun
6 wk after
Swiss Chard
Beta vulgaris (Flavescens-gruppen)
16 – 23 Mar
10 Jul
3-4 wk
13 Apr
31 Jul
5 wk after
25 Mar
21 Jul
2 wk after
Carrot
Daucus carota subsp. sativus var. sativus
27 Feb
1 Jul
2 wk before
Palm Kale
Brassica oleracea (Palm Kale-gruppen)
23 Dec – 6 Jan
16 Jun
5-7 wk
10 Feb
21 Jul
4 wk before
27 Feb
11 Jul
2 wk before
Potato
Solanum tuberosum
3 – 17 Feb
13 Jun
4-6 wk
17 Mar
11 Jul
1 wk after
17 Mar
1 Jul
1 wk after
Ornamental Kale
Brassica oleracea (Ornamental-gruppen)
23 Dec – 6 Jan
26 Jun
5-7 wk
10 Feb
31 Jul
4 wk before
6 Mar
21 Jul
1 wk before
Pumpkin
Cucurbita pepo
20 – 27 Apr
1 Jun
3-4 wk
18 May
22 Jun
10 wk after
Beetroot
Beta vulgaris (Conditiva-gruppen)
16 – 23 Mar
29 Jun
3-4 wk
13 Apr
20 Jul
5 wk after
25 Mar
10 Jul
2 wk after
Red Cabbage
Brassica oleracea (Red Cabbage-gruppen)
18 Feb – 4 Mar
28 Jun
4-6 wk
1 Apr
26 Jul
3 wk after
Lettuce
Lactuca sativa
3 – 10 Feb
15 Jul
3-4 wk
3 Mar
5 Aug
1 wk before
6 Mar
26 Jul
1 wk before
Savoy Cabbage
Brassica oleracea (Savoy Cabbage-gruppen)
20 Jan – 3 Feb
28 Jun
4-6 wk
3 Mar
26 Jul
1 wk before
Shallot (bulbs)
Allium cepa (Aggregatum-gruppen)
30 Jan – 13 Feb
7 Jun
2-4 wk
27 Feb
21 Jun
2 wk before
27 Feb
11 Jun
2 wk before
Shallot (sets)
Allium cepa (Aggregatum-gruppen)
6 Mar
21 Jun
1 wk before
6 Mar
11 Jun
1 wk before
Spinach
Spinacia oleracea
23 – 30 Jan
30 Jul
3-4 wk
20 Feb
20 Aug
3 wk before
20 Feb
10 Aug
3 wk before
Sweet potato
Ipomoea batatas
13 – 27 Apr
4-6 wk
25 May
11 wk after
Garden tomato
Solanum lycopersicum
Fleece
25 Feb – 11 Mar
26 Apr
6-8 wk
22 Apr
7 Jun
6 wk after
Tomatillo
Physalis ixocarpa
Common Bean
Phaseolus vulgaris
9 – 23 Apr
3 Jun
2-4 wk
7 May
17 Jun
8 wk after
22 Apr
7 Jun
6 wk after
White Cabbage
Brassica oleracea (White Cabbage-gruppen)
18 Feb – 4 Mar
28 Jun
4-6 wk
1 Apr
26 Jul
3 wk after
Garden pea
Pisum sativum
23 – 30 Jan
30 Jun
3-4 wk
20 Feb
21 Jul
3 wk before
6 Mar
11 Jul
1 wk before

Herbs

Plant Sow indoors Transplant Direct sow
Earliest Latest Growing time Earliest Latest Rel. frost Earliest Latest Rel. frost
Basil
Ocimum basilicum
6 – 20 Apr
10 May
4-6 wk
18 May
7 Jun
10 wk after
Lemon balm
Melissa officinalis
1 – 15 Jan
26 May
8-10 wk
12 Mar
21 Jul
Vid frost
7 Apr
11 Jul
4 wk after
Dill
Anethum graveolens
6 Mar
31 Jul
1 wk before
Wild chives
Allium schoenoprasum
16 – 30 Dec
9 Jun
6-8 wk
10 Feb
21 Jul
4 wk before
6 Mar
11 Jul
1 wk before
Spearmint
Mentha spicata
28 Nov – 26 Dec
26 May
8-12 wk
20 Feb
21 Jul
3 wk before
7 Apr
11 Jul
4 wk after
Coriander
Coriandrum sativum
25 Mar
10 Aug
2 wk after
Garden sage
Salvia officinalis
2 – 16 Feb
11 May
8-10 wk
13 Apr
6 Jul
5 wk after
Common thyme
Thymus vulgaris
21 Jan – 4 Feb
16 May
8-10 wk
1 Apr
11 Jul
3 wk after
Oregano
Origanum vulgare
24 Jan – 7 Feb
30 May
6-8 wk
21 Mar
11 Jul
1 wk after
7 Apr
1 Jul
4 wk after
Parsley
Petroselinum crispum
26 Dec – 9 Jan
30 May
6-8 wk
20 Feb
11 Jul
3 wk before
6 Mar
1 Jul
1 wk before
Rosemary
Salvia rosmarinus
5 Jan – 2 Feb
12 Apr
10-14 wk
13 Apr
21 Jun
5 wk after

Annual flowers

Plant Sow indoors Transplant Direct sow
Earliest Latest Growing time Earliest Latest Rel. frost Earliest Latest Rel. frost
Morning glory
Ipomoea tricolor
20 – 27 Apr
17 May
3-4 wk
18 May
7 Jun
10 wk after
Cornflower
Centaurea cyanus
20 Feb
21 Jul
3 wk before
6 Mar
11 Jul
1 wk before
Statice
Limonium sinuatum
26 Feb – 12 Mar
4 May
8-10 wk
7 May
29 Jun
8 wk after
Sweet William
Dianthus barbatus
26 Dec – 9 Jan
6-8 wk
20 Feb
3 wk before
17 Mar
1 wk after
Snow-on-the-mountain
Euphorbia marginata
12 – 26 Mar
18 May
6-8 wk
7 May
29 Jun
8 wk after
25 May
19 Jun
11 wk after
Pinnate dahlia
Dahlia × pinnata
5 – 19 Mar
24 May
6-8 wk
30 Apr
5 Jul
7 wk after
Pinnate dahlia (tubers)
Dahlia × pinnata
10 Feb – 10 Mar
7 Jun
4-8 wk
7 Apr
5 Jul
4 wk after
7 Apr
25 Jun
4 wk after
Foxglove
Digitalis purpurea
12 – 26 Dec
8-10 wk
20 Feb
3 wk before
25 Mar
2 wk after
Busy lizzie
Impatiens walleriana
23 Feb – 23 Mar
14 Jun
8-12 wk
18 May
9 Aug
10 wk after
Creeping zinnia
Sanvitalia procumbens
12 – 26 Mar
28 May
6-8 wk
7 May
9 Jul
8 wk after
Hyacinth bean
Dolichos lablab
Greenhouse
26 Mar – 9 Apr
27 Apr
4-6 wk
7 May
25 May
8 wk after
Chinese lantern
Physalis alkekengi
2 – 16 Feb
26 Apr
8-10 wk
13 Apr
21 Jun
5 wk after
Love in a mist
Nigella damascena
6 Mar
26 Jun
1 wk before
Strawflower
Xerochrysum bracteatum
12 – 26 Mar
8 May
6-8 wk
7 May
19 Jun
8 wk after
25 May
9 Jun
11 wk after
Purple-top vervain
Verbena bonariensis
19 Jan – 16 Feb
26 Apr
8-12 wk
13 Apr
21 Jun
5 wk after
Cardoon
Cynara cardunculus
12 Feb – 12 Mar
27 Mar
8-12 wk
7 May
22 May
8 wk after
Regal-foxtail
Ptilotus nobilis
23 Feb – 23 Mar
2 Apr
8-12 wk
18 May
28 May
10 wk after
Globe amaranth
Gomphrena globosa
23 Mar – 6 Apr
16 Apr
6-8 wk
18 May
28 May
10 wk after
Corn poppy
Papaver rhoeas
6 Mar
11 Jul
1 wk before
Snapdragon
Antirrhinum majus
9 Dec – 6 Jan
16 May
8-12 wk
3 Mar
11 Jul
1 wk before
17 Mar
1 Jul
1 wk after
Flossflower
Ageratum houstonianum
9 – 23 Mar
14 May
8-10 wk
18 May
9 Jul
10 wk after
Sweet pea
Lathyrus odoratus
26 Dec – 16 Jan
6 Jun
5-8 wk
20 Feb
11 Jul
3 wk before
Stock
Matthiola incana
6 – 20 Jan
9 Jun
6-8 wk
3 Mar
21 Jul
1 wk before
25 Mar
11 Jul
2 wk after
Wormwood
Artemisia absinthium
26 Dec – 9 Jan
10 May
6-8 wk
20 Feb
21 Jun
3 wk before
25 Mar
11 Jun
2 wk after
Mexican sunflower
Tithonia rotundifolia
Fleece
26 Mar – 9 Apr
12 May
4-6 wk
7 May
9 Jun
8 wk after
Garden pansy
Viola × wittrockiana
2 – 16 Dec
26 May
8-10 wk
10 Feb
21 Jul
4 wk before
17 Mar
11 Jul
1 wk after
Petunia
Petunia
12 Feb – 12 Mar
4 May
8-12 wk
7 May
29 Jun
8 wk after
Sweet Scabious
Scabiosa atropurpurea
16 Feb – 2 Mar
10 May
6-8 wk
13 Apr
21 Jun
5 wk after
22 Apr
11 Jun
6 wk after
Common zinnia
Zinnia elegans
26 Mar – 9 Apr
27 May
4-6 wk
7 May
24 Jun
8 wk after
Common morning glory
Ipomoea purpurea
13 – 27 Apr
17 May
3-5 wk
18 May
7 Jun
10 wk after
Garden cosmos
Cosmos bipinnatus
26 Mar – 9 Apr
7 Jun
4-6 wk
7 May
5 Jul
8 wk after
22 Apr
25 Jun
6 wk after
Scarlet milkweed
Asclepias curassavica
2 – 30 Mar
2 May
8-12 wk
25 May
27 Jun
11 wk after
Bee balm
Monarda didyma
18 Dec – 15 Jan
26 Apr
8-12 wk
12 Mar
21 Jun
Vid frost
7 Apr
11 Jun
4 wk after
Yarrow
Achillea millefolium
26 Dec – 9 Jan
10 Apr
6-8 wk
20 Feb
22 May
3 wk before
25 Mar
12 May
2 wk after
Safflower
Carthamus tinctorius
20 Feb
21 Jun
3 wk before
6 Mar
11 Jun
1 wk before
Iceland poppy
Papaver nudicaule
16 – 30 Dec
30 May
6-8 wk
10 Feb
11 Jul
4 wk before
27 Feb
1 Jul
2 wk before
Bishop's flower
Ammi majus
13 – 27 Feb
13 Jun
4-6 wk
27 Mar
11 Jul
2 wk after
25 Mar
1 Jul
2 wk after
Drumsticks
Pycnosorus globosus
Fleece
12 – 26 Feb
6 Apr
10-12 wk
7 May
15 Jun
8 wk after
Sunflower
Helianthus annuus
9 – 16 Apr
20 Jun
3-4 wk
7 May
11 Jul
8 wk after
7 Apr
1 Jul
4 wk after
China aster
Callistephus chinensis
12 – 26 Mar
9 Jun
6-8 wk
7 May
21 Jul
8 wk after
22 Apr
11 Jul
6 wk after
Annual phlox
Phlox drummondii
25 Feb – 11 Mar
28 May
6-8 wk
22 Apr
9 Jul
6 wk after
22 Apr
29 Jun
6 wk after
Hollyhock
Alcea rosea
26 Dec – 9 Jan
6-8 wk
20 Feb
3 wk before
25 Mar
2 wk after
Alpine delphinium
Delphinium elatum
7 Jan – 4 Feb
26 Apr
8-12 wk
1 Apr
21 Jun
3 wk after
7 Apr
11 Jun
4 wk after
African marigold
Tagetes erecta
12 – 26 Mar
28 May
6-8 wk
7 May
9 Jul
8 wk after
Black-eyed Susan
Rudbeckia hirta
16 Feb – 2 Mar
30 May
6-8 wk
13 Apr
11 Jul
5 wk after
22 Apr
1 Jul
6 wk after
Wood sage
Salvia nemorosa
10 – 24 Jan
16 Apr
8-10 wk
21 Mar
11 Jun
1 wk after
7 Apr
1 Jun
4 wk after
Black-eyed susan vine
Thunbergia alata
9 Mar – 6 Apr
26 Apr
6-10 wk
18 May
7 Jun
10 wk after
California goldenpoppy
Eschscholzia californica
6 Mar
11 Jul
1 wk before
Painted tongue
Salpiglossis sinuata
26 Feb – 12 Mar
16 May
8-10 wk
7 May
11 Jul
8 wk after
Water forget-me-not
Myosotis scorpioides
26 Dec – 9 Jan
10 May
6-8 wk
20 Feb
21 Jun
3 wk before
25 Mar
11 Jun
2 wk after