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Rel. frost
Last spring frost (0°C) 31 Mar Frost 3 of 4 years · 20 years of data
Frost-free season 214 days 31 Mar – 31 Oct
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)
10 – 24 Feb
18 Jun
5-7 wk
31 Mar
23 Jul
0 wk
24 Mar
13 Jul
1 wk before
Broccoli
Brassica oleracea (Italica-gruppen)
17 Feb – 3 Mar
30 Jun
4-6 wk
31 Mar
28 Jul
0 wk
24 Mar
18 Jul
1 wk before
Chili pepper
Capsicum annuum
Fleece
13 Feb – 13 Mar
17 Apr
8-12 wk
8 May
12 Jun
5 wk after
Curly Kale
Brassica oleracea (Curly Kale-gruppen)
10 – 24 Feb
13 Jun
5-7 wk
31 Mar
18 Jul
0 wk
19 Mar
8 Jul
2 wk before
Garden cucumber
Cucumis sativus
22 – 29 Apr
11 Jun
3-4 wk
20 May
2 Jul
7 wk after
Florence Fennel
Foeniculum vulgare
15 – 22 Apr
10 Jun
4-5 wk
20 May
8 Jul
7 wk after
6 May
28 Jun
5 wk after
Butter bean
Phaseolus lunatus
Greenhouse
2 – 9 May
7 Jun
3-4 wk
30 May
28 Jun
9 wk after
Onion
Allium cepa (Cepa-gruppen)
6 Jan – 3 Feb
3 Apr
8-12 wk
31 Mar
29 May
0 wk
10 Apr
19 May
1 wk after
Onion (sets)
Allium cepa (Cepa-gruppen)
24 Mar
18 Jun
1 wk before
24 Mar
8 Jun
1 wk before
Maize
Zea mays
10 – 17 Apr
1 Jun
3-4 wk
8 May
22 Jun
5 wk after
Swiss Chard
Beta vulgaris (Flavescens-gruppen)
5 – 12 Mar
7 Jul
3-4 wk
2 Apr
28 Jul
0 wk
10 Apr
18 Jul
1 wk after
Carrot
Daucus carota subsp. sativus var. sativus
31 Mar
8 Jul
0 wk
19 Mar
28 Jun
2 wk before
Palm Kale
Brassica oleracea (Palm Kale-gruppen)
10 – 24 Feb
13 Jun
5-7 wk
31 Mar
18 Jul
0 wk
19 Mar
8 Jul
2 wk before
Potato
Solanum tuberosum
22 Feb – 8 Mar
10 Jun
4-6 wk
5 Apr
8 Jul
1 wk after
5 Apr
28 Jun
1 wk after
Ornamental Kale
Brassica oleracea (Ornamental-gruppen)
10 – 24 Feb
23 Jun
5-7 wk
31 Mar
28 Jul
0 wk
24 Mar
18 Jul
1 wk before
Pumpkin
Cucurbita pepo
22 – 29 Apr
28 Jun
3-4 wk
20 May
19 Jul
7 wk after
Beetroot
Beta vulgaris (Conditiva-gruppen)
5 – 12 Mar
13 Jun
3-4 wk
2 Apr
4 Jul
0 wk
10 Apr
24 Jun
1 wk after
Red Cabbage
Brassica oleracea (Red Cabbage-gruppen)
17 Feb – 3 Mar
25 Jun
4-6 wk
31 Mar
23 Jul
0 wk
Lettuce
Lactuca sativa
3 – 10 Mar
12 Jul
3-4 wk
31 Mar
2 Aug
0 wk
24 Mar
23 Jul
1 wk before
Savoy Cabbage
Brassica oleracea (Savoy Cabbage-gruppen)
17 Feb – 3 Mar
25 Jun
4-6 wk
31 Mar
23 Jul
0 wk
Shallot (bulbs)
Allium cepa (Aggregatum-gruppen)
19 Feb – 5 Mar
4 Jun
2-4 wk
19 Mar
18 Jun
2 wk before
19 Mar
8 Jun
2 wk before
Shallot (sets)
Allium cepa (Aggregatum-gruppen)
24 Mar
18 Jun
1 wk before
24 Mar
8 Jun
1 wk before
Spinach
Spinacia oleracea
3 – 10 Mar
27 Jul
3-4 wk
31 Mar
17 Aug
0 wk
13 Mar
7 Aug
3 wk before
Sweet potato
Ipomoea batatas
27 Apr – 11 May
4-6 wk
8 Jun
10 wk after
Garden tomato
Solanum lycopersicum
13 – 27 Mar
11 May
6-8 wk
8 May
22 Jun
5 wk after
Tomatillo
Physalis ixocarpa
Common Bean
Phaseolus vulgaris
10 – 24 Apr
30 Jun
2-4 wk
8 May
14 Jul
5 wk after
6 May
4 Jul
5 wk after
White Cabbage
Brassica oleracea (White Cabbage-gruppen)
17 Feb – 3 Mar
25 Jun
4-6 wk
31 Mar
23 Jul
0 wk
Garden pea
Pisum sativum
3 – 10 Mar
27 Jun
3-4 wk
31 Mar
18 Jul
0 wk
24 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
8 – 22 Apr
6 Jun
4-6 wk
20 May
4 Jul
7 wk after
Lemon balm
Melissa officinalis
20 Jan – 3 Feb
23 May
8-10 wk
31 Mar
18 Jul
0 wk
21 Apr
8 Jul
3 wk after
Dill
Anethum graveolens
24 Mar
28 Jul
1 wk before
Wild chives
Allium schoenoprasum
Season too short
3 – 17 Feb
6 Jun
6-8 wk
31 Mar
18 Jul
0 wk
2 Mar
8 Jul
4 wk before
Spearmint
Mentha spicata
6 Jan – 3 Feb
23 May
8-12 wk
31 Mar
18 Jul
0 wk
21 Apr
8 Jul
3 wk after
Coriander
Coriandrum sativum
31 Mar
17 Aug
0 wk
10 Apr
7 Aug
1 wk after
Garden sage
Salvia officinalis
22 Jan – 5 Feb
8 May
8-10 wk
2 Apr
3 Jul
0 wk
Common thyme
Thymus vulgaris
20 Jan – 3 Feb
13 May
8-10 wk
31 Mar
8 Jul
0 wk
Oregano
Origanum vulgare
3 – 17 Feb
27 May
6-8 wk
31 Mar
8 Jul
0 wk
21 Apr
28 Jun
3 wk after
Parsley
Petroselinum crispum
3 – 17 Feb
27 May
6-8 wk
31 Mar
8 Jul
0 wk
24 Mar
28 Jun
1 wk before
Rosemary
Salvia rosmarinus
25 Dec – 22 Jan
9 Apr
10-14 wk
2 Apr
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
22 – 29 Apr
13 Jun
3-4 wk
20 May
4 Jul
7 wk after
Cornflower
Centaurea cyanus
31 Mar
18 Jul
0 wk
24 Mar
8 Jul
1 wk before
Statice
Limonium sinuatum
27 Feb – 13 Mar
13 May
8-10 wk
8 May
8 Jul
5 wk after
Sweet William
Dianthus barbatus
3 – 17 Feb
6-8 wk
31 Mar
0 wk
5 Apr
1 wk after
Snow-on-the-mountain
Euphorbia marginata
13 – 27 Mar
27 May
6-8 wk
8 May
8 Jul
5 wk after
8 Jun
28 Jun
10 wk after
Pinnate dahlia
Dahlia × pinnata
6 – 20 Mar
27 May
6-8 wk
1 May
8 Jul
4 wk after
Pinnate dahlia (tubers)
Dahlia × pinnata
24 Feb – 24 Mar
10 Jun
4-8 wk
21 Apr
8 Jul
3 wk after
21 Apr
28 Jun
3 wk after
Foxglove
Digitalis purpurea
20 Jan – 3 Feb
8-10 wk
31 Mar
0 wk
10 Apr
1 wk after
Busy lizzie
Impatiens walleriana
25 Feb – 25 Mar
8 Jul
8-12 wk
20 May
2 Sep
7 wk after
Creeping zinnia
Sanvitalia procumbens
13 – 27 Mar
6 Jun
6-8 wk
8 May
18 Jul
5 wk after
Hyacinth bean
Dolichos lablab
Fleece
8 – 22 Apr
7 May
4-6 wk
20 May
4 Jun
7 wk after
Chinese lantern
Physalis alkekengi
22 Jan – 5 Feb
23 Apr
8-10 wk
2 Apr
18 Jun
0 wk
Love in a mist
Nigella damascena
31 Mar
3 Jul
0 wk
24 Mar
23 Jun
1 wk before
Strawflower
Xerochrysum bracteatum
13 – 27 Mar
17 May
6-8 wk
8 May
28 Jun
5 wk after
8 Jun
18 Jun
10 wk after
Purple-top vervain
Verbena bonariensis
8 Jan – 5 Feb
23 Apr
8-12 wk
2 Apr
18 Jun
0 wk
Cardoon
Cynara cardunculus
13 Feb – 13 Mar
24 Mar
8-12 wk
8 May
19 May
5 wk after
Regal-foxtail
Ptilotus nobilis
25 Feb – 25 Mar
29 Apr
8-12 wk
20 May
24 Jun
7 wk after
Globe amaranth
Gomphrena globosa
25 Mar – 8 Apr
13 May
6-8 wk
20 May
24 Jun
7 wk after
Corn poppy
Papaver rhoeas
31 Mar
18 Jul
0 wk
24 Mar
8 Jul
1 wk before
Snapdragon
Antirrhinum majus
6 Jan – 3 Feb
13 May
8-12 wk
31 Mar
8 Jul
0 wk
5 Apr
28 Jun
1 wk after
Flossflower
Ageratum houstonianum
11 – 25 Mar
23 May
8-10 wk
20 May
18 Jul
7 wk after
Sweet pea
Lathyrus odoratus
3 – 24 Feb
3 Jun
5-8 wk
31 Mar
8 Jul
0 wk
Stock
Matthiola incana
3 – 17 Feb
6 Jun
6-8 wk
31 Mar
18 Jul
0 wk
10 Apr
8 Jul
1 wk after
Wormwood
Artemisia absinthium
3 – 17 Feb
7 May
6-8 wk
31 Mar
18 Jun
0 wk
10 Apr
8 Jun
1 wk after
Mexican sunflower
Tithonia rotundifolia
8 – 22 Apr
22 May
4-6 wk
20 May
19 Jun
7 wk after
Garden pansy
Viola × wittrockiana
20 Jan – 3 Feb
23 May
8-10 wk
31 Mar
18 Jul
0 wk
5 Apr
8 Jul
1 wk after
Petunia
Petunia
13 Feb – 13 Mar
13 May
8-12 wk
8 May
8 Jul
5 wk after
Sweet Scabious
Scabiosa atropurpurea
5 – 19 Feb
7 May
6-8 wk
2 Apr
18 Jun
0 wk
6 May
8 Jun
5 wk after
Common zinnia
Zinnia elegans
27 Mar – 10 Apr
20 Jun
4-6 wk
8 May
18 Jul
5 wk after
Common morning glory
Ipomoea purpurea
15 – 29 Apr
13 Jun
3-5 wk
20 May
4 Jul
7 wk after
Garden cosmos
Cosmos bipinnatus
27 Mar – 10 Apr
10 Jun
4-6 wk
8 May
8 Jul
5 wk after
6 May
28 Jun
5 wk after
Scarlet milkweed
Asclepias curassavica
17 Mar – 14 Apr
29 May
8-12 wk
9 Jun
24 Jul
10 wk after
Bee balm
Monarda didyma
6 Jan – 3 Feb
23 Apr
8-12 wk
31 Mar
18 Jun
0 wk
21 Apr
8 Jun
3 wk after
Yarrow
Achillea millefolium
3 – 17 Feb
7 Apr
6-8 wk
31 Mar
19 May
0 wk
10 Apr
9 May
1 wk after
Safflower
Carthamus tinctorius
31 Mar
18 Jun
0 wk
24 Mar
8 Jun
1 wk before
Iceland poppy
Papaver nudicaule
Season too short
3 – 17 Feb
27 May
6-8 wk
31 Mar
8 Jul
0 wk
20 Feb
28 Jun
6 wk before
Bishop's flower
Ammi majus
17 Feb – 3 Mar
10 Jun
4-6 wk
31 Mar
8 Jul
0 wk
10 Apr
28 Jun
1 wk after
Drumsticks
Pycnosorus globosus
25 Feb – 11 Mar
9 Apr
10-12 wk
20 May
18 Jun
7 wk after
Sunflower
Helianthus annuus
10 – 17 Apr
17 Jun
3-4 wk
8 May
8 Jul
5 wk after
21 Apr
28 Jun
3 wk after
China aster
Callistephus chinensis
13 – 27 Mar
6 Jun
6-8 wk
8 May
18 Jul
5 wk after
6 May
8 Jul
5 wk after
Annual phlox
Phlox drummondii
27 Feb – 13 Mar
6 Jun
6-8 wk
24 Apr
18 Jul
3 wk after
6 May
8 Jul
5 wk after
Hollyhock
Alcea rosea
3 – 17 Feb
6-8 wk
31 Mar
0 wk
10 Apr
1 wk after
Alpine delphinium
Delphinium elatum
6 Jan – 3 Feb
23 Apr
8-12 wk
31 Mar
18 Jun
0 wk
21 Apr
8 Jun
3 wk after
African marigold
Tagetes erecta
13 – 27 Mar
6 Jun
6-8 wk
8 May
18 Jul
5 wk after
Black-eyed Susan
Rudbeckia hirta
5 – 19 Feb
27 May
6-8 wk
2 Apr
8 Jul
0 wk
6 May
28 Jun
5 wk after
Wood sage
Salvia nemorosa
20 Jan – 3 Feb
13 Apr
8-10 wk
31 Mar
8 Jun
0 wk
21 Apr
29 May
3 wk after
Black-eyed susan vine
Thunbergia alata
11 Mar – 8 Apr
23 May
6-10 wk
20 May
4 Jul
7 wk after
California goldenpoppy
Eschscholzia californica
31 Mar
18 Jul
0 wk
24 Mar
8 Jul
1 wk before
Painted tongue
Salpiglossis sinuata
27 Feb – 13 Mar
13 May
8-10 wk
8 May
8 Jul
5 wk after
Water forget-me-not
Myosotis scorpioides
Season too short
3 – 17 Feb
7 May
6-8 wk
31 Mar
18 Jun
0 wk
19 Mar
8 Jun
2 wk before