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Rel. frost
Last spring frost (0°C) 20 Feb Frost 3 of 4 years · 20 years of data
Frost-free season 277 days 20 Feb – 24 Nov
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
Earliest Latest Growing time Earliest Latest Rel. frost Earliest Latest Rel. frost
Cauliflower
Brassica oleracea (Botrytis-gruppen)
2 – 16 Jan
21 Jun
5-7 wk
20 Feb
26 Jul
0 wk
14 Feb
16 Jul
1 wk before
Broccoli
Brassica oleracea (Italica-gruppen)
9 – 23 Jan
3 Jul
4-6 wk
20 Feb
31 Jul
0 wk
14 Feb
21 Jul
1 wk before
Chili pepper
Capsicum annuum
8 Jan – 5 Feb
23 Apr
8-12 wk
2 Apr
18 Jun
6 wk after
Curly Kale
Brassica oleracea (Curly Kale-gruppen)
2 – 16 Jan
16 Jun
5-7 wk
20 Feb
21 Jul
0 wk
7 Feb
11 Jul
2 wk before
Garden cucumber
Cucumis sativus
5 – 12 Mar
27 Jun
3-4 wk
2 Apr
18 Jul
6 wk after
Florence Fennel
Foeniculum vulgare
26 Feb – 5 Mar
13 Jun
4-5 wk
2 Apr
11 Jul
6 wk after
2 Apr
1 Jul
6 wk after
Butter bean
Phaseolus lunatus
Fleece
31 Mar – 7 Apr
10 Jun
3-4 wk
28 Apr
1 Jul
10 wk after
Onion
Allium cepa (Cepa-gruppen)
28 Nov – 26 Dec
6 Apr
8-12 wk
20 Feb
1 Jun
0 wk
5 Mar
22 May
2 wk after
Onion (sets)
Allium cepa (Cepa-gruppen)
14 Feb
21 Jun
1 wk before
14 Feb
11 Jun
1 wk before
Maize
Zea mays
19 – 26 Feb
17 Jun
3-4 wk
19 Mar
8 Jul
4 wk after
Swiss Chard
Beta vulgaris (Flavescens-gruppen)
23 – 30 Jan
10 Jul
3-4 wk
20 Feb
31 Jul
0 wk
5 Mar
21 Jul
2 wk after
Carrot
Daucus carota subsp. sativus var. sativus
20 Feb
11 Jul
0 wk
7 Feb
1 Jul
2 wk before
Palm Kale
Brassica oleracea (Palm Kale-gruppen)
2 – 16 Jan
16 Jun
5-7 wk
20 Feb
21 Jul
0 wk
7 Feb
11 Jul
2 wk before
Potato
Solanum tuberosum
14 – 28 Jan
13 Jun
4-6 wk
25 Feb
11 Jul
1 wk after
25 Feb
1 Jul
1 wk after
Ornamental Kale
Brassica oleracea (Ornamental-gruppen)
2 – 16 Jan
26 Jun
5-7 wk
20 Feb
31 Jul
0 wk
14 Feb
21 Jul
1 wk before
Pumpkin
Cucurbita pepo
5 – 12 Mar
15 Jul
3-4 wk
2 Apr
5 Aug
6 wk after
Beetroot
Beta vulgaris (Conditiva-gruppen)
23 – 30 Jan
2 Jul
3-4 wk
20 Feb
23 Jul
0 wk
5 Mar
13 Jul
2 wk after
Red Cabbage
Brassica oleracea (Red Cabbage-gruppen)
9 – 23 Jan
28 Jun
4-6 wk
20 Feb
26 Jul
0 wk
Lettuce
Lactuca sativa
23 – 30 Jan
15 Jul
3-4 wk
20 Feb
5 Aug
0 wk
14 Feb
26 Jul
1 wk before
Savoy Cabbage
Brassica oleracea (Savoy Cabbage-gruppen)
9 – 23 Jan
28 Jun
4-6 wk
20 Feb
26 Jul
0 wk
Shallot (bulbs)
Allium cepa (Aggregatum-gruppen)
10 – 24 Jan
7 Jun
2-4 wk
7 Feb
21 Jun
2 wk before
7 Feb
11 Jun
2 wk before
Shallot (sets)
Allium cepa (Aggregatum-gruppen)
14 Feb
21 Jun
1 wk before
14 Feb
11 Jun
1 wk before
Spinach
Spinacia oleracea
23 – 30 Jan
30 Jul
3-4 wk
20 Feb
20 Aug
0 wk
31 Jan
10 Aug
3 wk before
Sweet potato
Ipomoea batatas
24 Mar – 7 Apr
4-6 wk
5 May
11 wk after
Garden tomato
Solanum lycopersicum
22 Jan – 5 Feb
27 May
6-8 wk
19 Mar
8 Jul
4 wk after
Tomatillo
Physalis ixocarpa
Common Bean
Phaseolus vulgaris
19 Feb – 5 Mar
17 Jul
2-4 wk
19 Mar
31 Jul
4 wk after
2 Apr
21 Jul
6 wk after
White Cabbage
Brassica oleracea (White Cabbage-gruppen)
9 – 23 Jan
28 Jun
4-6 wk
20 Feb
26 Jul
0 wk
Garden pea
Pisum sativum
23 – 30 Jan
30 Jun
3-4 wk
20 Feb
21 Jul
0 wk
14 Feb
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
19 Feb – 5 Mar
23 Jun
4-6 wk
2 Apr
21 Jul
6 wk after
Lemon balm
Melissa officinalis
12 – 26 Dec
26 May
8-10 wk
20 Feb
21 Jul
0 wk
18 Mar
11 Jul
4 wk after
Dill
Anethum graveolens
14 Feb
31 Jul
1 wk before
Wild chives
Allium schoenoprasum
Season too short
26 Dec – 9 Jan
9 Jun
6-8 wk
20 Feb
21 Jul
0 wk
17 Jan
11 Jul
5 wk before
Spearmint
Mentha spicata
28 Nov – 26 Dec
26 May
8-12 wk
20 Feb
21 Jul
0 wk
18 Mar
11 Jul
4 wk after
Coriander
Coriandrum sativum
20 Feb
20 Aug
0 wk
5 Mar
10 Aug
2 wk after
Garden sage
Salvia officinalis
12 – 26 Dec
11 May
8-10 wk
20 Feb
6 Jul
0 wk
Common thyme
Thymus vulgaris
12 – 26 Dec
16 May
8-10 wk
20 Feb
11 Jul
0 wk
Oregano
Origanum vulgare
26 Dec – 9 Jan
30 May
6-8 wk
20 Feb
11 Jul
0 wk
18 Mar
1 Jul
4 wk after
Parsley
Petroselinum crispum
26 Dec – 9 Jan
30 May
6-8 wk
20 Feb
11 Jul
0 wk
14 Feb
1 Jul
1 wk before
Rosemary
Salvia rosmarinus
14 Nov – 12 Dec
12 Apr
10-14 wk
20 Feb
21 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
5 – 12 Mar
30 Jun
3-4 wk
2 Apr
21 Jul
6 wk after
Cornflower
Centaurea cyanus
20 Feb
21 Jul
0 wk
14 Feb
11 Jul
1 wk before
Statice
Limonium sinuatum
8 – 22 Jan
16 May
8-10 wk
19 Mar
11 Jul
4 wk after
Sweet William
Dianthus barbatus
26 Dec – 9 Jan
6-8 wk
20 Feb
0 wk
25 Feb
1 wk after
Snow-on-the-mountain
Euphorbia marginata
22 Jan – 5 Feb
30 May
6-8 wk
19 Mar
11 Jul
4 wk after
5 May
1 Jul
11 wk after
Pinnate dahlia
Dahlia × pinnata
17 – 31 Jan
30 May
6-8 wk
14 Mar
11 Jul
3 wk after
Pinnate dahlia (tubers)
Dahlia × pinnata
21 Jan – 18 Feb
13 Jun
4-8 wk
18 Mar
11 Jul
4 wk after
18 Mar
1 Jul
4 wk after
Foxglove
Digitalis purpurea
12 – 26 Dec
8-10 wk
20 Feb
0 wk
5 Mar
2 wk after
Busy lizzie
Impatiens walleriana
8 Jan – 5 Feb
11 Jul
8-12 wk
2 Apr
5 Sep
6 wk after
Creeping zinnia
Sanvitalia procumbens
22 Jan – 5 Feb
9 Jun
6-8 wk
19 Mar
21 Jul
4 wk after
Hyacinth bean
Dolichos lablab
9 – 23 Mar
11 May
4-6 wk
20 Apr
8 Jun
8 wk after
Chinese lantern
Physalis alkekengi
12 – 26 Dec
26 Apr
8-10 wk
20 Feb
21 Jun
0 wk
Love in a mist
Nigella damascena
20 Feb
6 Jul
0 wk
14 Feb
26 Jun
1 wk before
Strawflower
Xerochrysum bracteatum
22 Jan – 5 Feb
20 May
6-8 wk
19 Mar
1 Jul
4 wk after
5 May
21 Jun
11 wk after
Purple-top vervain
Verbena bonariensis
28 Nov – 26 Dec
26 Apr
8-12 wk
20 Feb
21 Jun
0 wk
Cardoon
Cynara cardunculus
25 Dec – 22 Jan
27 Mar
8-12 wk
19 Mar
22 May
4 wk after
Regal-foxtail
Ptilotus nobilis
8 Jan – 5 Feb
16 May
8-12 wk
2 Apr
11 Jul
6 wk after
Globe amaranth
Gomphrena globosa
5 – 19 Feb
30 May
6-8 wk
2 Apr
11 Jul
6 wk after
Corn poppy
Papaver rhoeas
20 Feb
21 Jul
0 wk
14 Feb
11 Jul
1 wk before
Snapdragon
Antirrhinum majus
28 Nov – 26 Dec
16 May
8-12 wk
20 Feb
11 Jul
0 wk
25 Feb
1 Jul
1 wk after
Flossflower
Ageratum houstonianum
22 Jan – 5 Feb
26 May
8-10 wk
2 Apr
21 Jul
6 wk after
Sweet pea
Lathyrus odoratus
26 Dec – 16 Jan
6 Jun
5-8 wk
20 Feb
11 Jul
0 wk
Stock
Matthiola incana
26 Dec – 9 Jan
9 Jun
6-8 wk
20 Feb
21 Jul
0 wk
5 Mar
11 Jul
2 wk after
Wormwood
Artemisia absinthium
26 Dec – 9 Jan
10 May
6-8 wk
20 Feb
21 Jun
0 wk
5 Mar
11 Jun
2 wk after
Mexican sunflower
Tithonia rotundifolia
19 Feb – 5 Mar
8 Jun
4-6 wk
2 Apr
6 Jul
6 wk after
Garden pansy
Viola × wittrockiana
12 – 26 Dec
26 May
8-10 wk
20 Feb
21 Jul
0 wk
25 Feb
11 Jul
1 wk after
Petunia
Petunia
25 Dec – 22 Jan
16 May
8-12 wk
19 Mar
11 Jul
4 wk after
Sweet Scabious
Scabiosa atropurpurea
26 Dec – 9 Jan
10 May
6-8 wk
20 Feb
21 Jun
0 wk
2 Apr
11 Jun
6 wk after
Common zinnia
Zinnia elegans
5 – 19 Feb
23 Jun
4-6 wk
19 Mar
21 Jul
4 wk after
Common morning glory
Ipomoea purpurea
26 Feb – 12 Mar
30 Jun
3-5 wk
2 Apr
21 Jul
6 wk after
Garden cosmos
Cosmos bipinnatus
5 – 19 Feb
13 Jun
4-6 wk
19 Mar
11 Jul
4 wk after
2 Apr
1 Jul
6 wk after
Scarlet milkweed
Asclepias curassavica
26 Jan – 23 Feb
15 Jun
8-12 wk
20 Apr
10 Aug
8 wk after
Bee balm
Monarda didyma
28 Nov – 26 Dec
26 Apr
8-12 wk
20 Feb
21 Jun
0 wk
18 Mar
11 Jun
4 wk after
Yarrow
Achillea millefolium
26 Dec – 9 Jan
10 Apr
6-8 wk
20 Feb
22 May
0 wk
5 Mar
12 May
2 wk after
Safflower
Carthamus tinctorius
20 Feb
21 Jun
0 wk
14 Feb
11 Jun
1 wk before
Iceland poppy
Papaver nudicaule
Season too short
26 Dec – 9 Jan
30 May
6-8 wk
20 Feb
11 Jul
0 wk
5 Jan
1 Jul
7 wk before
Bishop's flower
Ammi majus
9 – 23 Jan
13 Jun
4-6 wk
20 Feb
11 Jul
0 wk
5 Mar
1 Jul
2 wk after
Drumsticks
Pycnosorus globosus
8 – 22 Jan
12 Apr
10-12 wk
2 Apr
21 Jun
6 wk after
Sunflower
Helianthus annuus
19 – 26 Feb
20 Jun
3-4 wk
19 Mar
11 Jul
4 wk after
18 Mar
1 Jul
4 wk after
China aster
Callistephus chinensis
22 Jan – 5 Feb
9 Jun
6-8 wk
19 Mar
21 Jul
4 wk after
2 Apr
11 Jul
6 wk after
Annual phlox
Phlox drummondii
13 – 27 Jan
9 Jun
6-8 wk
10 Mar
21 Jul
3 wk after
2 Apr
11 Jul
6 wk after
Hollyhock
Alcea rosea
26 Dec – 9 Jan
6-8 wk
20 Feb
0 wk
5 Mar
2 wk after
Alpine delphinium
Delphinium elatum
28 Nov – 26 Dec
26 Apr
8-12 wk
20 Feb
21 Jun
0 wk
18 Mar
11 Jun
4 wk after
African marigold
Tagetes erecta
22 Jan – 5 Feb
9 Jun
6-8 wk
19 Mar
21 Jul
4 wk after
Black-eyed Susan
Rudbeckia hirta
26 Dec – 9 Jan
30 May
6-8 wk
20 Feb
11 Jul
0 wk
2 Apr
1 Jul
6 wk after
Wood sage
Salvia nemorosa
12 – 26 Dec
16 Apr
8-10 wk
20 Feb
11 Jun
0 wk
18 Mar
1 Jun
4 wk after
Black-eyed susan vine
Thunbergia alata
22 Jan – 19 Feb
9 Jun
6-10 wk
2 Apr
21 Jul
6 wk after
California goldenpoppy
Eschscholzia californica
20 Feb
21 Jul
0 wk
14 Feb
11 Jul
1 wk before
Painted tongue
Salpiglossis sinuata
8 – 22 Jan
16 May
8-10 wk
19 Mar
11 Jul
4 wk after
Water forget-me-not
Myosotis scorpioides
Season too short
26 Dec – 9 Jan
10 May
6-8 wk
20 Feb
21 Jun
0 wk
7 Feb
11 Jun
2 wk before