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Rel. frost
Last spring frost (0°C) 7 Mar Frost 9 of 10 years · 20 years of data
Frost-free season 237 days 7 Mar – 30 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)
17 – 31 Jan
18 Jun
5-7 wk
7 Mar
23 Jul
0 wk
28 Feb
13 Jul
1 wk before
Broccoli
Brassica oleracea (Italica-gruppen)
24 Jan – 7 Feb
30 Jun
4-6 wk
7 Mar
28 Jul
0 wk
28 Feb
18 Jul
1 wk before
Chili pepper
Capsicum annuum
Greenhouse
6 Jan – 3 Feb
24 Mar
8-12 wk
31 Mar
19 May
3 wk after
Curly Kale
Brassica oleracea (Curly Kale-gruppen)
17 – 31 Jan
13 Jun
5-7 wk
7 Mar
18 Jul
0 wk
23 Feb
8 Jul
2 wk before
Garden cucumber
Cucumis sativus
Fleece
17 – 24 Mar
18 May
3-4 wk
14 Apr
8 Jun
5 wk after
Florence Fennel
Foeniculum vulgare
22 – 29 Mar
10 Jun
4-5 wk
26 Apr
8 Jul
7 wk after
12 Apr
28 Jun
5 wk after
Butter bean
Phaseolus lunatus
Greenhouse
8 – 15 Apr
14 May
3-4 wk
6 May
4 Jun
9 wk after
Onion
Allium cepa (Cepa-gruppen)
13 Dec – 10 Jan
3 Apr
8-12 wk
7 Mar
29 May
0 wk
17 Mar
19 May
1 wk after
Onion (sets)
Allium cepa (Cepa-gruppen)
28 Feb
18 Jun
1 wk before
28 Feb
8 Jun
1 wk before
Maize
Zea mays
Fleece
3 – 10 Mar
8 May
3-4 wk
31 Mar
29 May
3 wk after
Swiss Chard
Beta vulgaris (Flavescens-gruppen)
9 – 16 Feb
7 Jul
3-4 wk
9 Mar
28 Jul
0 wk
17 Mar
18 Jul
1 wk after
Carrot
Daucus carota subsp. sativus var. sativus
7 Mar
8 Jul
0 wk
23 Feb
28 Jun
2 wk before
Palm Kale
Brassica oleracea (Palm Kale-gruppen)
17 – 31 Jan
13 Jun
5-7 wk
7 Mar
18 Jul
0 wk
23 Feb
8 Jul
2 wk before
Potato
Solanum tuberosum
29 Jan – 12 Feb
9 Jun
4-6 wk
12 Mar
7 Jul
1 wk after
12 Mar
27 Jun
1 wk after
Ornamental Kale
Brassica oleracea (Ornamental-gruppen)
17 – 31 Jan
23 Jun
5-7 wk
7 Mar
28 Jul
0 wk
28 Feb
18 Jul
1 wk before
Pumpkin
Cucurbita pepo
29 Mar – 5 Apr
23 May
3-4 wk
26 Apr
13 Jun
7 wk after
Beetroot
Beta vulgaris (Conditiva-gruppen)
9 – 16 Feb
9 Jun
3-4 wk
9 Mar
30 Jun
0 wk
17 Mar
20 Jun
1 wk after
Red Cabbage
Brassica oleracea (Red Cabbage-gruppen)
24 Jan – 7 Feb
25 Jun
4-6 wk
7 Mar
23 Jul
0 wk
Lettuce
Lactuca sativa
7 – 14 Feb
12 Jul
3-4 wk
7 Mar
2 Aug
0 wk
28 Feb
23 Jul
1 wk before
Savoy Cabbage
Brassica oleracea (Savoy Cabbage-gruppen)
24 Jan – 7 Feb
25 Jun
4-6 wk
7 Mar
23 Jul
0 wk
Shallot (bulbs)
Allium cepa (Aggregatum-gruppen)
26 Jan – 9 Feb
4 Jun
2-4 wk
23 Feb
18 Jun
2 wk before
23 Feb
8 Jun
2 wk before
Shallot (sets)
Allium cepa (Aggregatum-gruppen)
28 Feb
18 Jun
1 wk before
28 Feb
8 Jun
1 wk before
Spinach
Spinacia oleracea
7 – 14 Feb
27 Jul
3-4 wk
7 Mar
17 Aug
0 wk
17 Feb
7 Aug
3 wk before
Sweet potato
Ipomoea batatas
3 – 17 Apr
4-6 wk
15 May
10 wk after
Garden tomato
Solanum lycopersicum
Fleece
3 – 17 Feb
17 Apr
6-8 wk
31 Mar
29 May
3 wk after
Tomatillo
Physalis ixocarpa
Common Bean
Phaseolus vulgaris
17 – 31 Mar
25 May
2-4 wk
14 Apr
8 Jun
5 wk after
12 Apr
29 May
5 wk after
White Cabbage
Brassica oleracea (White Cabbage-gruppen)
24 Jan – 7 Feb
25 Jun
4-6 wk
7 Mar
23 Jul
0 wk
Garden pea
Pisum sativum
7 – 14 Feb
27 Jun
3-4 wk
7 Mar
18 Jul
0 wk
28 Feb
8 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
15 – 29 Mar
1 May
4-6 wk
26 Apr
29 May
7 wk after
Lemon balm
Melissa officinalis
27 Dec – 10 Jan
23 May
8-10 wk
7 Mar
18 Jul
0 wk
28 Mar
8 Jul
3 wk after
Dill
Anethum graveolens
28 Feb
28 Jul
1 wk before
Wild chives
Allium schoenoprasum
Season too short
10 – 24 Jan
6 Jun
6-8 wk
7 Mar
18 Jul
0 wk
6 Feb
8 Jul
4 wk before
Spearmint
Mentha spicata
13 Dec – 10 Jan
23 May
8-12 wk
7 Mar
18 Jul
0 wk
28 Mar
8 Jul
3 wk after
Coriander
Coriandrum sativum
7 Mar
17 Aug
0 wk
17 Mar
7 Aug
1 wk after
Garden sage
Salvia officinalis
29 Dec – 12 Jan
8 May
8-10 wk
9 Mar
3 Jul
0 wk
Common thyme
Thymus vulgaris
27 Dec – 10 Jan
13 May
8-10 wk
7 Mar
8 Jul
0 wk
Oregano
Origanum vulgare
10 – 24 Jan
27 May
6-8 wk
7 Mar
8 Jul
0 wk
28 Mar
28 Jun
3 wk after
Parsley
Petroselinum crispum
10 – 24 Jan
27 May
6-8 wk
7 Mar
8 Jul
0 wk
28 Feb
28 Jun
1 wk before
Rosemary
Salvia rosmarinus
1 – 29 Dec
9 Apr
10-14 wk
9 Mar
18 Jun
0 wk

Annual flowers

Plant Sow indoors Transplant Direct sow
Earliest Latest Growing time Earliest Latest Rel. frost Earliest Latest Rel. frost
Morning glory
Ipomoea tricolor
29 Mar – 5 Apr
8 May
3-4 wk
26 Apr
29 May
7 wk after
Cornflower
Centaurea cyanus
7 Mar
18 Jul
0 wk
28 Feb
8 Jul
1 wk before
Statice
Limonium sinuatum
3 – 17 Feb
26 Apr
8-10 wk
14 Apr
21 Jun
5 wk after
Sweet William
Dianthus barbatus
10 – 24 Jan
6-8 wk
7 Mar
0 wk
12 Mar
1 wk after
Snow-on-the-mountain
Euphorbia marginata
17 Feb – 3 Mar
10 May
6-8 wk
14 Apr
21 Jun
5 wk after
15 May
11 Jun
10 wk after
Pinnate dahlia
Dahlia × pinnata
10 – 24 Feb
17 May
6-8 wk
7 Apr
28 Jun
4 wk after
Pinnate dahlia (tubers)
Dahlia × pinnata
31 Jan – 28 Feb
31 May
4-8 wk
28 Mar
28 Jun
3 wk after
28 Mar
18 Jun
3 wk after
Foxglove
Digitalis purpurea
27 Dec – 10 Jan
8-10 wk
7 Mar
0 wk
17 Mar
1 wk after
Busy lizzie
Impatiens walleriana
1 Feb – 1 Mar
14 Jun
8-12 wk
26 Apr
9 Aug
7 wk after
Creeping zinnia
Sanvitalia procumbens
17 Feb – 3 Mar
20 May
6-8 wk
14 Apr
1 Jul
5 wk after
Hyacinth bean
Dolichos lablab
Greenhouse
3 – 17 Mar
27 Apr
4-6 wk
14 Apr
25 May
5 wk after
Chinese lantern
Physalis alkekengi
29 Dec – 12 Jan
23 Apr
8-10 wk
9 Mar
18 Jun
0 wk
Love in a mist
Nigella damascena
7 Mar
3 Jul
0 wk
28 Feb
23 Jun
1 wk before
Strawflower
Xerochrysum bracteatum
17 Feb – 3 Mar
30 Apr
6-8 wk
14 Apr
11 Jun
5 wk after
15 May
1 Jun
10 wk after
Purple-top vervain
Verbena bonariensis
15 Dec – 12 Jan
23 Apr
8-12 wk
9 Mar
18 Jun
0 wk
Cardoon
Cynara cardunculus
20 Jan – 17 Feb
24 Mar
8-12 wk
14 Apr
19 May
5 wk after
Regal-foxtail
Ptilotus nobilis
1 Feb – 1 Mar
24 Mar
8-12 wk
26 Apr
19 May
7 wk after
Globe amaranth
Gomphrena globosa
1 – 15 Mar
7 Apr
6-8 wk
26 Apr
19 May
7 wk after
Corn poppy
Papaver rhoeas
7 Mar
18 Jul
0 wk
28 Feb
8 Jul
1 wk before
Snapdragon
Antirrhinum majus
13 Dec – 10 Jan
13 May
8-12 wk
7 Mar
8 Jul
0 wk
12 Mar
28 Jun
1 wk after
Flossflower
Ageratum houstonianum
15 Feb – 1 Mar
6 May
8-10 wk
26 Apr
1 Jul
7 wk after
Sweet pea
Lathyrus odoratus
10 – 31 Jan
3 Jun
5-8 wk
7 Mar
8 Jul
0 wk
Stock
Matthiola incana
10 – 24 Jan
6 Jun
6-8 wk
7 Mar
18 Jul
0 wk
17 Mar
8 Jul
1 wk after
Wormwood
Artemisia absinthium
10 – 24 Jan
7 May
6-8 wk
7 Mar
18 Jun
0 wk
17 Mar
8 Jun
1 wk after
Mexican sunflower
Tithonia rotundifolia
Fleece
3 – 17 Mar
12 May
4-6 wk
14 Apr
9 Jun
5 wk after
Garden pansy
Viola × wittrockiana
27 Dec – 10 Jan
23 May
8-10 wk
7 Mar
18 Jul
0 wk
12 Mar
8 Jul
1 wk after
Petunia
Petunia
20 Jan – 17 Feb
26 Apr
8-12 wk
14 Apr
21 Jun
5 wk after
Sweet Scabious
Scabiosa atropurpurea
12 – 26 Jan
7 May
6-8 wk
9 Mar
18 Jun
0 wk
12 Apr
8 Jun
5 wk after
Common zinnia
Zinnia elegans
3 – 17 Mar
27 May
4-6 wk
14 Apr
24 Jun
5 wk after
Common morning glory
Ipomoea purpurea
22 Mar – 5 Apr
8 May
3-5 wk
26 Apr
29 May
7 wk after
Garden cosmos
Cosmos bipinnatus
3 – 17 Mar
31 May
4-6 wk
14 Apr
28 Jun
5 wk after
12 Apr
18 Jun
5 wk after
Scarlet milkweed
Asclepias curassavica
21 Feb – 21 Mar
23 Apr
8-12 wk
16 May
18 Jun
10 wk after
Bee balm
Monarda didyma
13 Dec – 10 Jan
23 Apr
8-12 wk
7 Mar
18 Jun
0 wk
28 Mar
8 Jun
3 wk after
Yarrow
Achillea millefolium
10 – 24 Jan
7 Apr
6-8 wk
7 Mar
19 May
0 wk
17 Mar
9 May
1 wk after
Safflower
Carthamus tinctorius
7 Mar
18 Jun
0 wk
28 Feb
8 Jun
1 wk before
Iceland poppy
Papaver nudicaule
Season too short
10 – 24 Jan
27 May
6-8 wk
7 Mar
8 Jul
0 wk
27 Jan
28 Jun
6 wk before
Bishop's flower
Ammi majus
24 Jan – 7 Feb
10 Jun
4-6 wk
7 Mar
8 Jul
0 wk
17 Mar
28 Jun
1 wk after
Drumsticks
Pycnosorus globosus
1 – 15 Feb
16 Mar
10-12 wk
26 Apr
25 May
7 wk after
Sunflower
Helianthus annuus
17 – 24 Mar
17 Jun
3-4 wk
14 Apr
8 Jul
5 wk after
28 Mar
28 Jun
3 wk after
China aster
Callistephus chinensis
17 Feb – 3 Mar
6 Jun
6-8 wk
14 Apr
18 Jul
5 wk after
12 Apr
8 Jul
5 wk after
Annual phlox
Phlox drummondii
3 – 17 Feb
20 May
6-8 wk
31 Mar
1 Jul
3 wk after
12 Apr
21 Jun
5 wk after
Hollyhock
Alcea rosea
10 – 24 Jan
6-8 wk
7 Mar
0 wk
17 Mar
1 wk after
Alpine delphinium
Delphinium elatum
13 Dec – 10 Jan
23 Apr
8-12 wk
7 Mar
18 Jun
0 wk
28 Mar
8 Jun
3 wk after
African marigold
Tagetes erecta
17 Feb – 3 Mar
20 May
6-8 wk
14 Apr
1 Jul
5 wk after
Black-eyed Susan
Rudbeckia hirta
12 – 26 Jan
27 May
6-8 wk
9 Mar
8 Jul
0 wk
12 Apr
28 Jun
5 wk after
Wood sage
Salvia nemorosa
27 Dec – 10 Jan
13 Apr
8-10 wk
7 Mar
8 Jun
0 wk
28 Mar
29 May
3 wk after
Black-eyed susan vine
Thunbergia alata
15 Feb – 15 Mar
17 Apr
6-10 wk
26 Apr
29 May
7 wk after
California goldenpoppy
Eschscholzia californica
7 Mar
18 Jul
0 wk
28 Feb
8 Jul
1 wk before
Painted tongue
Salpiglossis sinuata
3 – 17 Feb
13 May
8-10 wk
14 Apr
8 Jul
5 wk after
Water forget-me-not
Myosotis scorpioides
Season too short
10 – 24 Jan
7 May
6-8 wk
7 Mar
18 Jun
0 wk
23 Feb
8 Jun
2 wk before