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Rel. frost
Last spring frost (0°C) 26 Mar Frost 9 of 10 years · 20 years of data
Frost-free season 216 days 26 Mar – 28 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)
5 – 19 Feb
18 Jun
5-7 wk
26 Mar
23 Jul
0 wk
19 Mar
13 Jul
1 wk before
Broccoli
Brassica oleracea (Italica-gruppen)
12 – 26 Feb
30 Jun
4-6 wk
26 Mar
28 Jul
0 wk
19 Mar
18 Jul
1 wk before
Chili pepper
Capsicum annuum
Fleece
20 Jan – 17 Feb
11 Mar
8-12 wk
14 Apr
6 May
3 wk after
Curly Kale
Brassica oleracea (Curly Kale-gruppen)
5 – 19 Feb
13 Jun
5-7 wk
26 Mar
18 Jul
0 wk
14 Mar
8 Jul
2 wk before
Garden cucumber
Cucumis sativus
3 – 10 Apr
5 May
3-4 wk
1 May
26 May
5 wk after
Florence Fennel
Foeniculum vulgare
27 Mar – 3 Apr
10 Jun
4-5 wk
1 May
8 Jul
5 wk after
1 May
28 Jun
5 wk after
Butter bean
Phaseolus lunatus
Greenhouse
10 – 17 Apr
15 May
3-4 wk
8 May
5 Jun
6 wk after
Onion
Allium cepa (Cepa-gruppen)
1 – 29 Jan
3 Apr
8-12 wk
26 Mar
29 May
0 wk
5 Apr
19 May
1 wk after
Onion (sets)
Allium cepa (Cepa-gruppen)
19 Mar
18 Jun
1 wk before
19 Mar
8 Jun
1 wk before
Maize
Zea mays
17 – 24 Mar
25 Apr
3-4 wk
14 Apr
16 May
3 wk after
Swiss Chard
Beta vulgaris (Flavescens-gruppen)
4 – 11 Mar
7 Jul
3-4 wk
1 Apr
28 Jul
1 wk after
5 Apr
18 Jul
1 wk after
Carrot
Daucus carota subsp. sativus var. sativus
26 Mar
8 Jul
0 wk
14 Mar
28 Jun
2 wk before
Palm Kale
Brassica oleracea (Palm Kale-gruppen)
5 – 19 Feb
13 Jun
5-7 wk
26 Mar
18 Jul
0 wk
14 Mar
8 Jul
2 wk before
Potato
Solanum tuberosum
17 Feb – 3 Mar
4 Jun
4-6 wk
31 Mar
2 Jul
1 wk after
31 Mar
22 Jun
1 wk after
Ornamental Kale
Brassica oleracea (Ornamental-gruppen)
5 – 19 Feb
23 Jun
5-7 wk
26 Mar
28 Jul
0 wk
19 Mar
18 Jul
1 wk before
Pumpkin
Cucurbita pepo
3 – 10 Apr
4 Jun
3-4 wk
1 May
25 Jun
5 wk after
Beetroot
Beta vulgaris (Conditiva-gruppen)
4 – 11 Mar
15 Jun
3-4 wk
1 Apr
6 Jul
1 wk after
5 Apr
26 Jun
1 wk after
Red Cabbage
Brassica oleracea (Red Cabbage-gruppen)
12 – 26 Feb
25 Jun
4-6 wk
26 Mar
23 Jul
0 wk
Lettuce
Lactuca sativa
26 Feb – 5 Mar
12 Jul
3-4 wk
26 Mar
2 Aug
0 wk
19 Mar
23 Jul
1 wk before
Savoy Cabbage
Brassica oleracea (Savoy Cabbage-gruppen)
12 – 26 Feb
25 Jun
4-6 wk
26 Mar
23 Jul
0 wk
Shallot (bulbs)
Allium cepa (Aggregatum-gruppen)
14 – 28 Feb
4 Jun
2-4 wk
14 Mar
18 Jun
2 wk before
14 Mar
8 Jun
2 wk before
Shallot (sets)
Allium cepa (Aggregatum-gruppen)
19 Mar
18 Jun
1 wk before
19 Mar
8 Jun
1 wk before
Spinach
Spinacia oleracea
26 Feb – 5 Mar
27 Jul
3-4 wk
26 Mar
17 Aug
0 wk
8 Mar
7 Aug
3 wk before
Sweet potato
Ipomoea batatas
22 Apr – 6 May
4-6 wk
3 Jun
10 wk after
Garden tomato
Solanum lycopersicum
17 Feb – 3 Mar
4 Apr
6-8 wk
14 Apr
16 May
3 wk after
Tomatillo
Physalis ixocarpa
Common Bean
Phaseolus vulgaris
17 – 31 Mar
6 Jun
2-4 wk
14 Apr
20 Jun
3 wk after
1 May
10 Jun
5 wk after
White Cabbage
Brassica oleracea (White Cabbage-gruppen)
12 – 26 Feb
25 Jun
4-6 wk
26 Mar
23 Jul
0 wk
Garden pea
Pisum sativum
26 Feb – 5 Mar
27 Jun
3-4 wk
26 Mar
18 Jul
0 wk
19 Mar
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
20 Mar – 3 Apr
13 May
4-6 wk
1 May
10 Jun
5 wk after
Lemon balm
Melissa officinalis
15 – 29 Jan
23 May
8-10 wk
26 Mar
18 Jul
0 wk
16 Apr
8 Jul
3 wk after
Dill
Anethum graveolens
19 Mar
28 Jul
1 wk before
Wild chives
Allium schoenoprasum
Season too short
29 Jan – 12 Feb
6 Jun
6-8 wk
26 Mar
18 Jul
0 wk
25 Feb
8 Jul
4 wk before
Spearmint
Mentha spicata
1 – 29 Jan
23 May
8-12 wk
26 Mar
18 Jul
0 wk
16 Apr
8 Jul
3 wk after
Coriander
Coriandrum sativum
26 Mar
17 Aug
0 wk
5 Apr
7 Aug
1 wk after
Garden sage
Salvia officinalis
21 Jan – 4 Feb
8 May
8-10 wk
1 Apr
3 Jul
1 wk after
Common thyme
Thymus vulgaris
15 – 29 Jan
13 May
8-10 wk
26 Mar
8 Jul
0 wk
Oregano
Origanum vulgare
29 Jan – 12 Feb
27 May
6-8 wk
26 Mar
8 Jul
0 wk
16 Apr
28 Jun
3 wk after
Parsley
Petroselinum crispum
29 Jan – 12 Feb
27 May
6-8 wk
26 Mar
8 Jul
0 wk
19 Mar
28 Jun
1 wk before
Rosemary
Salvia rosmarinus
24 Dec – 21 Jan
9 Apr
10-14 wk
1 Apr
18 Jun
1 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
3 – 10 Apr
20 May
3-4 wk
1 May
10 Jun
5 wk after
Cornflower
Centaurea cyanus
26 Mar
18 Jul
0 wk
19 Mar
8 Jul
1 wk before
Statice
Limonium sinuatum
3 – 17 Feb
24 Apr
8-10 wk
14 Apr
19 Jun
3 wk after
Sweet William
Dianthus barbatus
29 Jan – 12 Feb
6-8 wk
26 Mar
0 wk
31 Mar
1 wk after
Snow-on-the-mountain
Euphorbia marginata
17 Feb – 3 Mar
8 May
6-8 wk
14 Apr
19 Jun
3 wk after
3 Jun
9 Jun
10 wk after
Pinnate dahlia
Dahlia × pinnata
12 – 26 Feb
15 May
6-8 wk
9 Apr
26 Jun
2 wk after
Pinnate dahlia (tubers)
Dahlia × pinnata
19 Feb – 19 Mar
29 May
4-8 wk
16 Apr
26 Jun
3 wk after
16 Apr
16 Jun
3 wk after
Foxglove
Digitalis purpurea
15 – 29 Jan
8-10 wk
26 Mar
0 wk
5 Apr
1 wk after
Busy lizzie
Impatiens walleriana
6 Feb – 6 Mar
15 Jun
8-12 wk
1 May
10 Aug
5 wk after
Creeping zinnia
Sanvitalia procumbens
17 Feb – 3 Mar
18 May
6-8 wk
14 Apr
29 Jun
3 wk after
Hyacinth bean
Dolichos lablab
Fleece
20 Mar – 3 Apr
13 Apr
4-6 wk
1 May
11 May
5 wk after
Chinese lantern
Physalis alkekengi
21 Jan – 4 Feb
23 Apr
8-10 wk
1 Apr
18 Jun
1 wk after
Love in a mist
Nigella damascena
26 Mar
3 Jul
0 wk
19 Mar
23 Jun
1 wk before
Strawflower
Xerochrysum bracteatum
17 Feb – 3 Mar
28 Apr
6-8 wk
14 Apr
9 Jun
3 wk after
3 Jun
10 wk after
Purple-top vervain
Verbena bonariensis
7 Jan – 4 Feb
23 Apr
8-12 wk
1 Apr
18 Jun
1 wk after
Cardoon
Cynara cardunculus
20 Jan – 17 Feb
24 Mar
8-12 wk
14 Apr
19 May
3 wk after
Regal-foxtail
Ptilotus nobilis
6 Feb – 6 Mar
5 Apr
8-12 wk
1 May
31 May
5 wk after
Globe amaranth
Gomphrena globosa
6 – 20 Mar
19 Apr
6-8 wk
1 May
31 May
5 wk after
Corn poppy
Papaver rhoeas
26 Mar
18 Jul
0 wk
19 Mar
8 Jul
1 wk before
Snapdragon
Antirrhinum majus
1 – 29 Jan
13 May
8-12 wk
26 Mar
8 Jul
0 wk
31 Mar
28 Jun
1 wk after
Flossflower
Ageratum houstonianum
20 Feb – 6 Mar
4 May
8-10 wk
1 May
29 Jun
5 wk after
Sweet pea
Lathyrus odoratus
29 Jan – 19 Feb
3 Jun
5-8 wk
26 Mar
8 Jul
0 wk
Stock
Matthiola incana
29 Jan – 12 Feb
6 Jun
6-8 wk
26 Mar
18 Jul
0 wk
5 Apr
8 Jul
1 wk after
Wormwood
Artemisia absinthium
29 Jan – 12 Feb
7 May
6-8 wk
26 Mar
18 Jun
0 wk
5 Apr
8 Jun
1 wk after
Mexican sunflower
Tithonia rotundifolia
20 Mar – 3 Apr
28 Apr
4-6 wk
1 May
26 May
5 wk after
Garden pansy
Viola × wittrockiana
15 – 29 Jan
23 May
8-10 wk
26 Mar
18 Jul
0 wk
31 Mar
8 Jul
1 wk after
Petunia
Petunia
20 Jan – 17 Feb
24 Apr
8-12 wk
14 Apr
19 Jun
3 wk after
Sweet Scabious
Scabiosa atropurpurea
4 – 18 Feb
7 May
6-8 wk
1 Apr
18 Jun
1 wk after
1 May
8 Jun
5 wk after
Common zinnia
Zinnia elegans
3 – 17 Mar
28 May
4-6 wk
14 Apr
25 Jun
3 wk after
Common morning glory
Ipomoea purpurea
27 Mar – 10 Apr
20 May
3-5 wk
1 May
10 Jun
5 wk after
Garden cosmos
Cosmos bipinnatus
3 – 17 Mar
29 May
4-6 wk
14 Apr
26 Jun
3 wk after
1 May
16 Jun
5 wk after
Scarlet milkweed
Asclepias curassavica
18 Feb – 18 Mar
5 May
8-12 wk
13 May
30 Jun
7 wk after
Bee balm
Monarda didyma
1 – 29 Jan
23 Apr
8-12 wk
26 Mar
18 Jun
0 wk
16 Apr
8 Jun
3 wk after
Yarrow
Achillea millefolium
29 Jan – 12 Feb
7 Apr
6-8 wk
26 Mar
19 May
0 wk
5 Apr
9 May
1 wk after
Safflower
Carthamus tinctorius
26 Mar
18 Jun
0 wk
19 Mar
8 Jun
1 wk before
Iceland poppy
Papaver nudicaule
Season too short
29 Jan – 12 Feb
27 May
6-8 wk
26 Mar
8 Jul
0 wk
15 Feb
28 Jun
6 wk before
Bishop's flower
Ammi majus
12 – 26 Feb
10 Jun
4-6 wk
26 Mar
8 Jul
0 wk
5 Apr
28 Jun
1 wk after
Drumsticks
Pycnosorus globosus
6 – 20 Feb
17 Mar
10-12 wk
1 May
26 May
5 wk after
Sunflower
Helianthus annuus
17 – 24 Mar
17 Jun
3-4 wk
14 Apr
8 Jul
3 wk after
16 Apr
28 Jun
3 wk after
China aster
Callistephus chinensis
17 Feb – 3 Mar
6 Jun
6-8 wk
14 Apr
18 Jul
3 wk after
1 May
8 Jul
5 wk after
Annual phlox
Phlox drummondii
9 – 23 Feb
18 May
6-8 wk
6 Apr
29 Jun
2 wk after
1 May
19 Jun
5 wk after
Hollyhock
Alcea rosea
29 Jan – 12 Feb
6-8 wk
26 Mar
0 wk
5 Apr
1 wk after
Alpine delphinium
Delphinium elatum
1 – 29 Jan
23 Apr
8-12 wk
26 Mar
18 Jun
0 wk
16 Apr
8 Jun
3 wk after
African marigold
Tagetes erecta
17 Feb – 3 Mar
18 May
6-8 wk
14 Apr
29 Jun
3 wk after
Black-eyed Susan
Rudbeckia hirta
4 – 18 Feb
27 May
6-8 wk
1 Apr
8 Jul
1 wk after
1 May
28 Jun
5 wk after
Wood sage
Salvia nemorosa
15 – 29 Jan
13 Apr
8-10 wk
26 Mar
8 Jun
0 wk
16 Apr
29 May
3 wk after
Black-eyed susan vine
Thunbergia alata
20 Feb – 20 Mar
29 Apr
6-10 wk
1 May
10 Jun
5 wk after
California goldenpoppy
Eschscholzia californica
26 Mar
18 Jul
0 wk
19 Mar
8 Jul
1 wk before
Painted tongue
Salpiglossis sinuata
3 – 17 Feb
13 May
8-10 wk
14 Apr
8 Jul
3 wk after
Water forget-me-not
Myosotis scorpioides
Season too short
29 Jan – 12 Feb
7 May
6-8 wk
26 Mar
18 Jun
0 wk
14 Mar
8 Jun
2 wk before