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Rel. frost
Last spring frost (0°C) 13 Apr Frost 1 of 4 years · 20 years of data
Frost-free season 220 days 13 Apr – 19 Nov
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)
23 Feb – 9 Mar
18 Jun
5-7 wk
13 Apr
23 Jul
0 wk
6 Apr
13 Jul
1 wk before
Broccoli
Brassica oleracea (Italica-gruppen)
2 – 16 Mar
30 Jun
4-6 wk
13 Apr
28 Jul
0 wk
6 Apr
18 Jul
1 wk before
Chili pepper
Capsicum annuum
24 Feb – 24 Mar
19 Apr
8-12 wk
19 May
14 Jun
5 wk after
Curly Kale
Brassica oleracea (Curly Kale-gruppen)
23 Feb – 9 Mar
13 Jun
5-7 wk
13 Apr
18 Jul
0 wk
1 Apr
8 Jul
2 wk before
Garden cucumber
Cucumis sativus
21 – 28 Apr
30 Jun
3-4 wk
19 May
21 Jul
5 wk after
Florence Fennel
Foeniculum vulgare
14 – 21 Apr
10 Jun
4-5 wk
19 May
8 Jul
5 wk after
19 May
28 Jun
5 wk after
Butter bean
Phaseolus lunatus
29 May – 5 Jun
31 May
3-4 wk
26 Jun
11 wk after
Onion
Allium cepa (Cepa-gruppen)
19 Jan – 16 Feb
3 Apr
8-12 wk
13 Apr
29 May
0 wk
23 Apr
19 May
1 wk after
Onion (sets)
Allium cepa (Cepa-gruppen)
6 Apr
18 Jun
1 wk before
6 Apr
8 Jun
1 wk before
Maize
Zea mays
4 – 11 Apr
20 Jun
3-4 wk
2 May
11 Jul
3 wk after
Swiss Chard
Beta vulgaris (Flavescens-gruppen)
22 – 29 Mar
7 Jul
3-4 wk
19 Apr
28 Jul
1 wk after
23 Apr
18 Jul
1 wk after
Carrot
Daucus carota subsp. sativus var. sativus
13 Apr
8 Jul
0 wk
1 Apr
28 Jun
2 wk before
Palm Kale
Brassica oleracea (Palm Kale-gruppen)
23 Feb – 9 Mar
13 Jun
5-7 wk
13 Apr
18 Jul
0 wk
1 Apr
8 Jul
2 wk before
Potato
Solanum tuberosum
7 – 21 Mar
10 Jun
4-6 wk
18 Apr
8 Jul
1 wk after
18 Apr
28 Jun
1 wk after
Ornamental Kale
Brassica oleracea (Ornamental-gruppen)
23 Feb – 9 Mar
23 Jun
5-7 wk
13 Apr
28 Jul
0 wk
6 Apr
18 Jul
1 wk before
Pumpkin
Cucurbita pepo
21 – 28 Apr
12 Jul
3-4 wk
19 May
2 Aug
5 wk after
Beetroot
Beta vulgaris (Conditiva-gruppen)
22 – 29 Mar
30 Jun
3-4 wk
19 Apr
21 Jul
1 wk after
23 Apr
11 Jul
1 wk after
Red Cabbage
Brassica oleracea (Red Cabbage-gruppen)
2 – 16 Mar
25 Jun
4-6 wk
13 Apr
23 Jul
0 wk
Lettuce
Lactuca sativa
16 – 23 Mar
12 Jul
3-4 wk
13 Apr
2 Aug
0 wk
6 Apr
23 Jul
1 wk before
Savoy Cabbage
Brassica oleracea (Savoy Cabbage-gruppen)
2 – 16 Mar
25 Jun
4-6 wk
13 Apr
23 Jul
0 wk
Shallot (bulbs)
Allium cepa (Aggregatum-gruppen)
4 – 18 Mar
4 Jun
2-4 wk
1 Apr
18 Jun
2 wk before
1 Apr
8 Jun
2 wk before
Shallot (sets)
Allium cepa (Aggregatum-gruppen)
6 Apr
18 Jun
1 wk before
6 Apr
8 Jun
1 wk before
Spinach
Spinacia oleracea
16 – 23 Mar
27 Jul
3-4 wk
13 Apr
17 Aug
0 wk
26 Mar
7 Aug
3 wk before
Sweet potato
Ipomoea batatas
10 – 24 May
4-6 wk
21 Jun
10 wk after
Garden tomato
Solanum lycopersicum
7 – 21 Mar
30 May
6-8 wk
2 May
11 Jul
3 wk after
Tomatillo
Physalis ixocarpa
Common Bean
Phaseolus vulgaris
4 – 18 Apr
14 Jul
2-4 wk
2 May
28 Jul
3 wk after
19 May
18 Jul
5 wk after
White Cabbage
Brassica oleracea (White Cabbage-gruppen)
2 – 16 Mar
25 Jun
4-6 wk
13 Apr
23 Jul
0 wk
Garden pea
Pisum sativum
16 – 23 Mar
27 Jun
3-4 wk
13 Apr
18 Jul
0 wk
6 Apr
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
7 – 21 Apr
20 Jun
4-6 wk
19 May
18 Jul
5 wk after
Lemon balm
Melissa officinalis
2 – 16 Feb
23 May
8-10 wk
13 Apr
18 Jul
0 wk
4 May
8 Jul
3 wk after
Dill
Anethum graveolens
6 Apr
28 Jul
1 wk before
Wild chives
Allium schoenoprasum
Season too short
16 Feb – 2 Mar
6 Jun
6-8 wk
13 Apr
18 Jul
0 wk
15 Mar
8 Jul
4 wk before
Spearmint
Mentha spicata
19 Jan – 16 Feb
23 May
8-12 wk
13 Apr
18 Jul
0 wk
4 May
8 Jul
3 wk after
Coriander
Coriandrum sativum
13 Apr
17 Aug
0 wk
23 Apr
7 Aug
1 wk after
Garden sage
Salvia officinalis
8 – 22 Feb
8 May
8-10 wk
19 Apr
3 Jul
1 wk after
Common thyme
Thymus vulgaris
2 – 16 Feb
13 May
8-10 wk
13 Apr
8 Jul
0 wk
Oregano
Origanum vulgare
16 Feb – 2 Mar
27 May
6-8 wk
13 Apr
8 Jul
0 wk
4 May
28 Jun
3 wk after
Parsley
Petroselinum crispum
16 Feb – 2 Mar
27 May
6-8 wk
13 Apr
8 Jul
0 wk
6 Apr
28 Jun
1 wk before
Rosemary
Salvia rosmarinus
11 Jan – 8 Feb
9 Apr
10-14 wk
19 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
21 – 28 Apr
27 Jun
3-4 wk
19 May
18 Jul
5 wk after
Cornflower
Centaurea cyanus
13 Apr
18 Jul
0 wk
6 Apr
8 Jul
1 wk before
Statice
Limonium sinuatum
21 Feb – 7 Mar
13 May
8-10 wk
2 May
8 Jul
3 wk after
Sweet William
Dianthus barbatus
16 Feb – 2 Mar
6-8 wk
13 Apr
0 wk
18 Apr
1 wk after
Snow-on-the-mountain
Euphorbia marginata
7 – 21 Mar
27 May
6-8 wk
2 May
8 Jul
3 wk after
21 Jun
28 Jun
10 wk after
Pinnate dahlia
Dahlia × pinnata
2 – 16 Mar
27 May
6-8 wk
27 Apr
8 Jul
2 wk after
Pinnate dahlia (tubers)
Dahlia × pinnata
9 Mar – 6 Apr
10 Jun
4-8 wk
4 May
8 Jul
3 wk after
4 May
28 Jun
3 wk after
Foxglove
Digitalis purpurea
2 – 16 Feb
8-10 wk
13 Apr
0 wk
23 Apr
1 wk after
Busy lizzie
Impatiens walleriana
24 Feb – 24 Mar
8 Jul
8-12 wk
19 May
2 Sep
5 wk after
Creeping zinnia
Sanvitalia procumbens
7 – 21 Mar
6 Jun
6-8 wk
2 May
18 Jul
3 wk after
Hyacinth bean
Dolichos lablab
19 Apr – 3 May
14 May
4-6 wk
31 May
11 Jun
7 wk after
Chinese lantern
Physalis alkekengi
8 – 22 Feb
23 Apr
8-10 wk
19 Apr
18 Jun
1 wk after
Love in a mist
Nigella damascena
13 Apr
3 Jul
0 wk
6 Apr
23 Jun
1 wk before
Strawflower
Xerochrysum bracteatum
7 – 21 Mar
17 May
6-8 wk
2 May
28 Jun
3 wk after
21 Jun
10 wk after
Purple-top vervain
Verbena bonariensis
25 Jan – 22 Feb
23 Apr
8-12 wk
19 Apr
18 Jun
1 wk after
Cardoon
Cynara cardunculus
7 Feb – 7 Mar
24 Mar
8-12 wk
2 May
19 May
3 wk after
Regal-foxtail
Ptilotus nobilis
24 Feb – 24 Mar
13 May
8-12 wk
19 May
8 Jul
5 wk after
Globe amaranth
Gomphrena globosa
24 Mar – 7 Apr
27 May
6-8 wk
19 May
8 Jul
5 wk after
Corn poppy
Papaver rhoeas
13 Apr
18 Jul
0 wk
6 Apr
8 Jul
1 wk before
Snapdragon
Antirrhinum majus
19 Jan – 16 Feb
13 May
8-12 wk
13 Apr
8 Jul
0 wk
18 Apr
28 Jun
1 wk after
Flossflower
Ageratum houstonianum
10 – 24 Mar
23 May
8-10 wk
19 May
18 Jul
5 wk after
Sweet pea
Lathyrus odoratus
16 Feb – 9 Mar
3 Jun
5-8 wk
13 Apr
8 Jul
0 wk
Stock
Matthiola incana
16 Feb – 2 Mar
6 Jun
6-8 wk
13 Apr
18 Jul
0 wk
23 Apr
8 Jul
1 wk after
Wormwood
Artemisia absinthium
16 Feb – 2 Mar
7 May
6-8 wk
13 Apr
18 Jun
0 wk
23 Apr
8 Jun
1 wk after
Mexican sunflower
Tithonia rotundifolia
7 – 21 Apr
5 Jun
4-6 wk
19 May
3 Jul
5 wk after
Garden pansy
Viola × wittrockiana
2 – 16 Feb
23 May
8-10 wk
13 Apr
18 Jul
0 wk
18 Apr
8 Jul
1 wk after
Petunia
Petunia
7 Feb – 7 Mar
13 May
8-12 wk
2 May
8 Jul
3 wk after
Sweet Scabious
Scabiosa atropurpurea
22 Feb – 8 Mar
7 May
6-8 wk
19 Apr
18 Jun
1 wk after
19 May
8 Jun
5 wk after
Common zinnia
Zinnia elegans
21 Mar – 4 Apr
20 Jun
4-6 wk
2 May
18 Jul
3 wk after
Common morning glory
Ipomoea purpurea
14 – 28 Apr
27 Jun
3-5 wk
19 May
18 Jul
5 wk after
Garden cosmos
Cosmos bipinnatus
21 Mar – 4 Apr
10 Jun
4-6 wk
2 May
8 Jul
3 wk after
19 May
28 Jun
5 wk after
Scarlet milkweed
Asclepias curassavica
8 Mar – 5 Apr
12 Jun
8-12 wk
31 May
7 Aug
7 wk after
Bee balm
Monarda didyma
19 Jan – 16 Feb
23 Apr
8-12 wk
13 Apr
18 Jun
0 wk
4 May
8 Jun
3 wk after
Yarrow
Achillea millefolium
16 Feb – 2 Mar
7 Apr
6-8 wk
13 Apr
19 May
0 wk
23 Apr
9 May
1 wk after
Safflower
Carthamus tinctorius
13 Apr
18 Jun
0 wk
6 Apr
8 Jun
1 wk before
Iceland poppy
Papaver nudicaule
Season too short
16 Feb – 2 Mar
27 May
6-8 wk
13 Apr
8 Jul
0 wk
5 Mar
28 Jun
6 wk before
Bishop's flower
Ammi majus
2 – 16 Mar
10 Jun
4-6 wk
13 Apr
8 Jul
0 wk
23 Apr
28 Jun
1 wk after
Drumsticks
Pycnosorus globosus
24 Feb – 10 Mar
9 Apr
10-12 wk
19 May
18 Jun
5 wk after
Sunflower
Helianthus annuus
4 – 11 Apr
17 Jun
3-4 wk
2 May
8 Jul
3 wk after
4 May
28 Jun
3 wk after
China aster
Callistephus chinensis
7 – 21 Mar
6 Jun
6-8 wk
2 May
18 Jul
3 wk after
19 May
8 Jul
5 wk after
Annual phlox
Phlox drummondii
27 Feb – 13 Mar
6 Jun
6-8 wk
24 Apr
18 Jul
2 wk after
19 May
8 Jul
5 wk after
Hollyhock
Alcea rosea
16 Feb – 2 Mar
6-8 wk
13 Apr
0 wk
23 Apr
1 wk after
Alpine delphinium
Delphinium elatum
19 Jan – 16 Feb
23 Apr
8-12 wk
13 Apr
18 Jun
0 wk
4 May
8 Jun
3 wk after
African marigold
Tagetes erecta
7 – 21 Mar
6 Jun
6-8 wk
2 May
18 Jul
3 wk after
Black-eyed Susan
Rudbeckia hirta
22 Feb – 8 Mar
27 May
6-8 wk
19 Apr
8 Jul
1 wk after
19 May
28 Jun
5 wk after
Wood sage
Salvia nemorosa
2 – 16 Feb
13 Apr
8-10 wk
13 Apr
8 Jun
0 wk
4 May
29 May
3 wk after
Black-eyed susan vine
Thunbergia alata
10 Mar – 7 Apr
6 Jun
6-10 wk
19 May
18 Jul
5 wk after
California goldenpoppy
Eschscholzia californica
13 Apr
18 Jul
0 wk
6 Apr
8 Jul
1 wk before
Painted tongue
Salpiglossis sinuata
21 Feb – 7 Mar
13 May
8-10 wk
2 May
8 Jul
3 wk after
Water forget-me-not
Myosotis scorpioides
Season too short
16 Feb – 2 Mar
7 May
6-8 wk
13 Apr
18 Jun
0 wk
1 Apr
8 Jun
2 wk before