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Rel. frost
Last spring frost (0°C) 17 Mar Frost 1 of 4 years · 20 years of data
Frost-free season 274 days 17 Mar – 16 Dec
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
Earliest Latest Growing time Earliest Latest Rel. frost Earliest Latest Rel. frost
Cauliflower
Brassica oleracea (Botrytis-gruppen)
27 Jan – 10 Feb
22 Jun
5-7 wk
17 Mar
27 Jul
0 wk
11 Mar
17 Jul
1 wk before
Broccoli
Brassica oleracea (Italica-gruppen)
3 – 17 Feb
4 Jul
4-6 wk
17 Mar
1 Aug
0 wk
11 Mar
22 Jul
1 wk before
Chili pepper
Capsicum annuum
11 Feb – 11 Mar
30 Apr
8-12 wk
6 May
25 Jun
7 wk after
Curly Kale
Brassica oleracea (Curly Kale-gruppen)
Season too short
27 Jan – 10 Feb
17 Jun
5-7 wk
17 Mar
22 Jul
0 wk
30 Jan
12 Jul
7 wk before
Garden cucumber
Cucumis sativus
8 – 15 Apr
10 Jul
3-4 wk
6 May
31 Jul
7 wk after
Florence Fennel
Foeniculum vulgare
1 – 8 Apr
14 Jun
4-5 wk
6 May
12 Jul
7 wk after
27 Apr
2 Jul
6 wk after
Butter bean
Phaseolus lunatus
27 May – 3 Jun
10 Jun
3-4 wk
24 Jun
1 Jul
14 wk after
Onion
Allium cepa (Cepa-gruppen)
23 Dec – 20 Jan
7 Apr
8-12 wk
17 Mar
2 Jun
0 wk
30 Mar
23 May
2 wk after
Onion (sets)
Allium cepa (Cepa-gruppen)
11 Mar
22 Jun
1 wk before
11 Mar
12 Jun
1 wk before
Maize
Zea mays
27 Mar – 3 Apr
30 Jun
3-4 wk
24 Apr
21 Jul
5 wk after
Swiss Chard
Beta vulgaris (Flavescens-gruppen)
19 – 26 Feb
11 Jul
3-4 wk
19 Mar
1 Aug
0 wk
30 Mar
22 Jul
2 wk after
Carrot
Daucus carota subsp. sativus var. sativus
17 Mar
12 Jul
0 wk
4 Mar
2 Jul
2 wk before
Palm Kale
Brassica oleracea (Palm Kale-gruppen)
Season too short
27 Jan – 10 Feb
17 Jun
5-7 wk
17 Mar
22 Jul
0 wk
30 Jan
12 Jul
7 wk before
Potato
Solanum tuberosum
8 – 22 Feb
14 Jun
4-6 wk
22 Mar
12 Jul
1 wk after
22 Mar
2 Jul
1 wk after
Ornamental Kale
Brassica oleracea (Ornamental-gruppen)
27 Jan – 10 Feb
27 Jun
5-7 wk
17 Mar
1 Aug
0 wk
11 Mar
22 Jul
1 wk before
Pumpkin
Cucurbita pepo
8 – 15 Apr
16 Jul
3-4 wk
6 May
6 Aug
7 wk after
Beetroot
Beta vulgaris (Conditiva-gruppen)
19 – 26 Feb
11 Jul
3-4 wk
19 Mar
1 Aug
0 wk
30 Mar
22 Jul
2 wk after
Red Cabbage
Brassica oleracea (Red Cabbage-gruppen)
Season too short
3 – 17 Feb
29 Jun
4-6 wk
17 Mar
27 Jul
0 wk
Lettuce
Lactuca sativa
17 – 24 Feb
16 Jul
3-4 wk
17 Mar
6 Aug
0 wk
11 Mar
27 Jul
1 wk before
Savoy Cabbage
Brassica oleracea (Savoy Cabbage-gruppen)
Season too short
3 – 17 Feb
29 Jun
4-6 wk
17 Mar
27 Jul
0 wk
Shallot (bulbs)
Allium cepa (Aggregatum-gruppen)
4 – 18 Feb
8 Jun
2-4 wk
4 Mar
22 Jun
2 wk before
4 Mar
12 Jun
2 wk before
Shallot (sets)
Allium cepa (Aggregatum-gruppen)
11 Mar
22 Jun
1 wk before
11 Mar
12 Jun
1 wk before
Spinach
Spinacia oleracea
17 – 24 Feb
31 Jul
3-4 wk
17 Mar
21 Aug
0 wk
25 Feb
11 Aug
3 wk before
Sweet potato
Ipomoea batatas
18 Apr – 2 May
4-6 wk
30 May
11 wk after
Garden tomato
Solanum lycopersicum
27 Feb – 13 Mar
9 Jun
6-8 wk
24 Apr
21 Jul
5 wk after
Tomatillo
Physalis ixocarpa
Common Bean
Phaseolus vulgaris
27 Mar – 10 Apr
18 Jul
2-4 wk
24 Apr
1 Aug
5 wk after
27 Apr
22 Jul
6 wk after
White Cabbage
Brassica oleracea (White Cabbage-gruppen)
Season too short
3 – 17 Feb
29 Jun
4-6 wk
17 Mar
27 Jul
0 wk
Garden pea
Pisum sativum
17 – 24 Feb
1 Jul
3-4 wk
17 Mar
22 Jul
0 wk
11 Mar
12 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
25 Mar – 8 Apr
24 Jun
4-6 wk
6 May
22 Jul
7 wk after
Lemon balm
Melissa officinalis
6 – 20 Jan
27 May
8-10 wk
17 Mar
22 Jul
0 wk
12 Apr
12 Jul
4 wk after
Dill
Anethum graveolens
11 Mar
1 Aug
1 wk before
Wild chives
Allium schoenoprasum
Season too short
20 Jan – 3 Feb
10 Jun
6-8 wk
17 Mar
22 Jul
0 wk
11 Feb
12 Jul
5 wk before
Spearmint
Mentha spicata
23 Dec – 20 Jan
27 May
8-12 wk
17 Mar
22 Jul
0 wk
12 Apr
12 Jul
4 wk after
Coriander
Coriandrum sativum
17 Mar
21 Aug
0 wk
30 Mar
11 Aug
2 wk after
Garden sage
Salvia officinalis
Season too short
6 – 20 Jan
12 May
8-10 wk
17 Mar
7 Jul
0 wk
Common thyme
Thymus vulgaris
Season too short
6 – 20 Jan
17 May
8-10 wk
17 Mar
12 Jul
0 wk
Oregano
Origanum vulgare
20 Jan – 3 Feb
31 May
6-8 wk
17 Mar
12 Jul
0 wk
12 Apr
2 Jul
4 wk after
Parsley
Petroselinum crispum
20 Jan – 3 Feb
31 May
6-8 wk
17 Mar
12 Jul
0 wk
11 Mar
2 Jul
1 wk before
Rosemary
Salvia rosmarinus
11 Dec – 8 Jan
13 Apr
10-14 wk
19 Mar
22 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
8 – 15 Apr
1 Jul
3-4 wk
6 May
22 Jul
7 wk after
Cornflower
Centaurea cyanus
17 Mar
22 Jul
0 wk
11 Mar
12 Jul
1 wk before
Statice
Limonium sinuatum
13 – 27 Feb
17 May
8-10 wk
24 Apr
12 Jul
5 wk after
Sweet William
Dianthus barbatus
20 Jan – 3 Feb
6-8 wk
17 Mar
0 wk
22 Mar
1 wk after
Snow-on-the-mountain
Euphorbia marginata
27 Feb – 13 Mar
31 May
6-8 wk
24 Apr
12 Jul
5 wk after
30 May
2 Jul
11 wk after
Pinnate dahlia
Dahlia × pinnata
20 Feb – 6 Mar
31 May
6-8 wk
17 Apr
12 Jul
4 wk after
Pinnate dahlia (tubers)
Dahlia × pinnata
15 Feb – 15 Mar
14 Jun
4-8 wk
12 Apr
12 Jul
4 wk after
12 Apr
2 Jul
4 wk after
Foxglove
Digitalis purpurea
6 – 20 Jan
8-10 wk
17 Mar
0 wk
30 Mar
2 wk after
Busy lizzie
Impatiens walleriana
11 Feb – 11 Mar
12 Jul
8-12 wk
6 May
6 Sep
7 wk after
Creeping zinnia
Sanvitalia procumbens
27 Feb – 13 Mar
10 Jun
6-8 wk
24 Apr
22 Jul
5 wk after
Hyacinth bean
Dolichos lablab
14 – 28 Apr
24 May
4-6 wk
26 May
21 Jun
10 wk after
Chinese lantern
Physalis alkekengi
8 – 22 Jan
27 Apr
8-10 wk
19 Mar
22 Jun
0 wk
Love in a mist
Nigella damascena
17 Mar
7 Jul
0 wk
11 Mar
27 Jun
1 wk before
Strawflower
Xerochrysum bracteatum
27 Feb – 13 Mar
21 May
6-8 wk
24 Apr
2 Jul
5 wk after
30 May
22 Jun
11 wk after
Purple-top vervain
Verbena bonariensis
25 Dec – 22 Jan
27 Apr
8-12 wk
19 Mar
22 Jun
0 wk
Cardoon
Cynara cardunculus
30 Jan – 27 Feb
28 Mar
8-12 wk
24 Apr
23 May
5 wk after
Regal-foxtail
Ptilotus nobilis
11 Feb – 11 Mar
17 May
8-12 wk
6 May
12 Jul
7 wk after
Globe amaranth
Gomphrena globosa
11 – 25 Mar
31 May
6-8 wk
6 May
12 Jul
7 wk after
Corn poppy
Papaver rhoeas
17 Mar
22 Jul
0 wk
11 Mar
12 Jul
1 wk before
Snapdragon
Antirrhinum majus
23 Dec – 20 Jan
17 May
8-12 wk
17 Mar
12 Jul
0 wk
22 Mar
2 Jul
1 wk after
Flossflower
Ageratum houstonianum
25 Feb – 11 Mar
27 May
8-10 wk
6 May
22 Jul
7 wk after
Sweet pea
Lathyrus odoratus
20 Jan – 10 Feb
7 Jun
5-8 wk
17 Mar
12 Jul
0 wk
Stock
Matthiola incana
20 Jan – 3 Feb
10 Jun
6-8 wk
17 Mar
22 Jul
0 wk
30 Mar
12 Jul
2 wk after
Wormwood
Artemisia absinthium
Season too short
20 Jan – 3 Feb
11 May
6-8 wk
17 Mar
22 Jun
0 wk
4 Mar
12 Jun
2 wk before
Mexican sunflower
Tithonia rotundifolia
25 Mar – 8 Apr
9 Jun
4-6 wk
6 May
7 Jul
7 wk after
Garden pansy
Viola × wittrockiana
Season too short
6 – 20 Jan
27 May
8-10 wk
17 Mar
22 Jul
0 wk
25 Feb
12 Jul
3 wk before
Petunia
Petunia
30 Jan – 27 Feb
17 May
8-12 wk
24 Apr
12 Jul
5 wk after
Sweet Scabious
Scabiosa atropurpurea
22 Jan – 5 Feb
11 May
6-8 wk
19 Mar
22 Jun
0 wk
27 Apr
12 Jun
6 wk after
Common zinnia
Zinnia elegans
13 – 27 Mar
24 Jun
4-6 wk
24 Apr
22 Jul
5 wk after
Common morning glory
Ipomoea purpurea
1 – 15 Apr
1 Jul
3-5 wk
6 May
22 Jul
7 wk after
Garden cosmos
Cosmos bipinnatus
13 – 27 Mar
14 Jun
4-6 wk
24 Apr
12 Jul
5 wk after
27 Apr
2 Jul
6 wk after
Scarlet milkweed
Asclepias curassavica
3 – 31 Mar
16 Jun
8-12 wk
26 May
11 Aug
10 wk after
Bee balm
Monarda didyma
23 Dec – 20 Jan
27 Apr
8-12 wk
17 Mar
22 Jun
0 wk
12 Apr
12 Jun
4 wk after
Yarrow
Achillea millefolium
Season too short
20 Jan – 3 Feb
11 Apr
6-8 wk
17 Mar
23 May
0 wk
4 Mar
13 May
2 wk before
Safflower
Carthamus tinctorius
17 Mar
22 Jun
0 wk
11 Mar
12 Jun
1 wk before
Iceland poppy
Papaver nudicaule
Season too short
20 Jan – 3 Feb
31 May
6-8 wk
17 Mar
12 Jul
0 wk
30 Jan
2 Jul
7 wk before
Bishop's flower
Ammi majus
3 – 17 Feb
14 Jun
4-6 wk
17 Mar
12 Jul
0 wk
30 Mar
2 Jul
2 wk after
Drumsticks
Pycnosorus globosus
11 – 25 Feb
13 Apr
10-12 wk
6 May
22 Jun
7 wk after
Sunflower
Helianthus annuus
27 Mar – 3 Apr
21 Jun
3-4 wk
24 Apr
12 Jul
5 wk after
12 Apr
2 Jul
4 wk after
China aster
Callistephus chinensis
27 Feb – 13 Mar
10 Jun
6-8 wk
24 Apr
22 Jul
5 wk after
27 Apr
12 Jul
6 wk after
Annual phlox
Phlox drummondii
13 – 27 Feb
10 Jun
6-8 wk
10 Apr
22 Jul
3 wk after
27 Apr
12 Jul
6 wk after
Hollyhock
Alcea rosea
20 Jan – 3 Feb
6-8 wk
17 Mar
0 wk
30 Mar
2 wk after
Alpine delphinium
Delphinium elatum
23 Dec – 20 Jan
27 Apr
8-12 wk
17 Mar
22 Jun
0 wk
12 Apr
12 Jun
4 wk after
African marigold
Tagetes erecta
27 Feb – 13 Mar
10 Jun
6-8 wk
24 Apr
22 Jul
5 wk after
Black-eyed Susan
Rudbeckia hirta
22 Jan – 5 Feb
31 May
6-8 wk
19 Mar
12 Jul
0 wk
27 Apr
2 Jul
6 wk after
Wood sage
Salvia nemorosa
6 – 20 Jan
17 Apr
8-10 wk
17 Mar
12 Jun
0 wk
12 Apr
2 Jun
4 wk after
Black-eyed susan vine
Thunbergia alata
25 Feb – 25 Mar
10 Jun
6-10 wk
6 May
22 Jul
7 wk after
California goldenpoppy
Eschscholzia californica
17 Mar
22 Jul
0 wk
11 Mar
12 Jul
1 wk before
Painted tongue
Salpiglossis sinuata
13 – 27 Feb
17 May
8-10 wk
24 Apr
12 Jul
5 wk after
Water forget-me-not
Myosotis scorpioides
Season too short
20 Jan – 3 Feb
11 May
6-8 wk
17 Mar
22 Jun
0 wk
4 Mar
12 Jun
2 wk before