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Rel. frost
Last spring frost (0°C) 15 Apr Frost 1 of 10 years · 20 years of data
Frost-free season 252 days 15 Apr – 23 Dec
Probability that frost is over

90% = 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)
25 Feb – 11 Mar
21 Jun
5-7 wk
15 Apr
26 Jul
0 wk
9 Apr
16 Jul
1 wk before
Broccoli
Brassica oleracea (Italica-gruppen)
4 – 18 Mar
3 Jul
4-6 wk
15 Apr
31 Jul
0 wk
9 Apr
21 Jul
1 wk before
Chili pepper
Capsicum annuum
3 – 31 Mar
1 Apr
8-12 wk
26 May
27 May
6 wk after
Curly Kale
Brassica oleracea (Curly Kale-gruppen)
25 Feb – 11 Mar
16 Jun
5-7 wk
15 Apr
21 Jul
0 wk
2 Apr
11 Jul
2 wk before
Garden cucumber
Cucumis sativus
28 Apr – 5 May
19 Jun
3-4 wk
26 May
10 Jul
6 wk after
Florence Fennel
Foeniculum vulgare
21 – 28 Apr
13 Jun
4-5 wk
26 May
11 Jul
6 wk after
26 May
1 Jul
6 wk after
Butter bean
Phaseolus lunatus
Fleece
24 – 31 May
1 Jun
3-4 wk
21 Jun
22 Jun
10 wk after
Onion
Allium cepa (Cepa-gruppen)
21 Jan – 18 Feb
6 Apr
8-12 wk
15 Apr
1 Jun
0 wk
28 Apr
22 May
2 wk after
Onion (sets)
Allium cepa (Cepa-gruppen)
9 Apr
21 Jun
1 wk before
9 Apr
11 Jun
1 wk before
Maize
Zea mays
14 – 21 Apr
9 Jun
3-4 wk
12 May
30 Jun
4 wk after
Swiss Chard
Beta vulgaris (Flavescens-gruppen)
18 – 25 Mar
10 Jul
3-4 wk
15 Apr
31 Jul
0 wk
28 Apr
21 Jul
2 wk after
Carrot
Daucus carota subsp. sativus var. sativus
15 Apr
11 Jul
0 wk
2 Apr
1 Jul
2 wk before
Palm Kale
Brassica oleracea (Palm Kale-gruppen)
25 Feb – 11 Mar
16 Jun
5-7 wk
15 Apr
21 Jul
0 wk
2 Apr
11 Jul
2 wk before
Potato
Solanum tuberosum
9 – 23 Mar
13 Jun
4-6 wk
20 Apr
11 Jul
1 wk after
20 Apr
1 Jul
1 wk after
Ornamental Kale
Brassica oleracea (Ornamental-gruppen)
25 Feb – 11 Mar
26 Jun
5-7 wk
15 Apr
31 Jul
0 wk
9 Apr
21 Jul
1 wk before
Pumpkin
Cucurbita pepo
28 Apr – 5 May
6 Jul
3-4 wk
26 May
27 Jul
6 wk after
Beetroot
Beta vulgaris (Conditiva-gruppen)
18 – 25 Mar
10 Jul
3-4 wk
15 Apr
31 Jul
0 wk
28 Apr
21 Jul
2 wk after
Red Cabbage
Brassica oleracea (Red Cabbage-gruppen)
4 – 18 Mar
28 Jun
4-6 wk
15 Apr
26 Jul
0 wk
Lettuce
Lactuca sativa
18 – 25 Mar
15 Jul
3-4 wk
15 Apr
5 Aug
0 wk
9 Apr
26 Jul
1 wk before
Savoy Cabbage
Brassica oleracea (Savoy Cabbage-gruppen)
4 – 18 Mar
28 Jun
4-6 wk
15 Apr
26 Jul
0 wk
Shallot (bulbs)
Allium cepa (Aggregatum-gruppen)
5 – 19 Mar
7 Jun
2-4 wk
2 Apr
21 Jun
2 wk before
2 Apr
11 Jun
2 wk before
Shallot (sets)
Allium cepa (Aggregatum-gruppen)
9 Apr
21 Jun
1 wk before
9 Apr
11 Jun
1 wk before
Spinach
Spinacia oleracea
18 – 25 Mar
30 Jul
3-4 wk
15 Apr
20 Aug
0 wk
26 Mar
10 Aug
3 wk before
Sweet potato
Ipomoea batatas
17 – 31 May
4-6 wk
28 Jun
11 wk after
Garden tomato
Solanum lycopersicum
17 – 31 Mar
19 May
6-8 wk
12 May
30 Jun
4 wk after
Tomatillo
Physalis ixocarpa
Common Bean
Phaseolus vulgaris
14 – 28 Apr
8 Jul
2-4 wk
12 May
22 Jul
4 wk after
26 May
12 Jul
6 wk after
White Cabbage
Brassica oleracea (White Cabbage-gruppen)
4 – 18 Mar
28 Jun
4-6 wk
15 Apr
26 Jul
0 wk
Garden pea
Pisum sativum
18 – 25 Mar
30 Jun
3-4 wk
15 Apr
21 Jul
0 wk
9 Apr
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
14 – 28 Apr
14 Jun
4-6 wk
26 May
12 Jul
6 wk after
Lemon balm
Melissa officinalis
4 – 18 Feb
26 May
8-10 wk
15 Apr
21 Jul
0 wk
11 May
11 Jul
4 wk after
Dill
Anethum graveolens
9 Apr
31 Jul
1 wk before
Wild chives
Allium schoenoprasum
Season too short
18 Feb – 4 Mar
9 Jun
6-8 wk
15 Apr
21 Jul
0 wk
12 Mar
11 Jul
5 wk before
Spearmint
Mentha spicata
21 Jan – 18 Feb
26 May
8-12 wk
15 Apr
21 Jul
0 wk
11 May
11 Jul
4 wk after
Coriander
Coriandrum sativum
15 Apr
20 Aug
0 wk
28 Apr
10 Aug
2 wk after
Garden sage
Salvia officinalis
4 – 18 Feb
11 May
8-10 wk
15 Apr
6 Jul
0 wk
Common thyme
Thymus vulgaris
4 – 18 Feb
16 May
8-10 wk
15 Apr
11 Jul
0 wk
Oregano
Origanum vulgare
18 Feb – 4 Mar
30 May
6-8 wk
15 Apr
11 Jul
0 wk
11 May
1 Jul
4 wk after
Parsley
Petroselinum crispum
18 Feb – 4 Mar
30 May
6-8 wk
15 Apr
11 Jul
0 wk
9 Apr
1 Jul
1 wk before
Rosemary
Salvia rosmarinus
7 Jan – 4 Feb
12 Apr
10-14 wk
15 Apr
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
28 Apr – 5 May
21 Jun
3-4 wk
26 May
12 Jul
6 wk after
Cornflower
Centaurea cyanus
15 Apr
21 Jul
0 wk
9 Apr
11 Jul
1 wk before
Statice
Limonium sinuatum
3 – 17 Mar
16 May
8-10 wk
12 May
11 Jul
4 wk after
Sweet William
Dianthus barbatus
18 Feb – 4 Mar
6-8 wk
15 Apr
0 wk
20 Apr
1 wk after
Snow-on-the-mountain
Euphorbia marginata
17 – 31 Mar
30 May
6-8 wk
12 May
11 Jul
4 wk after
28 Jun
1 Jul
11 wk after
Pinnate dahlia
Dahlia × pinnata
12 – 26 Mar
30 May
6-8 wk
7 May
11 Jul
3 wk after
Pinnate dahlia (tubers)
Dahlia × pinnata
16 Mar – 13 Apr
13 Jun
4-8 wk
11 May
11 Jul
4 wk after
11 May
1 Jul
4 wk after
Foxglove
Digitalis purpurea
4 – 18 Feb
8-10 wk
15 Apr
0 wk
28 Apr
2 wk after
Busy lizzie
Impatiens walleriana
3 – 31 Mar
11 Jul
8-12 wk
26 May
5 Sep
6 wk after
Creeping zinnia
Sanvitalia procumbens
17 – 31 Mar
9 Jun
6-8 wk
12 May
21 Jul
4 wk after
Hyacinth bean
Dolichos lablab
2 – 16 May
3 May
4-6 wk
13 Jun
8 wk after
Chinese lantern
Physalis alkekengi
4 – 18 Feb
26 Apr
8-10 wk
15 Apr
21 Jun
0 wk
Love in a mist
Nigella damascena
15 Apr
6 Jul
0 wk
9 Apr
26 Jun
1 wk before
Strawflower
Xerochrysum bracteatum
17 – 31 Mar
20 May
6-8 wk
12 May
1 Jul
4 wk after
28 Jun
11 wk after
Purple-top vervain
Verbena bonariensis
21 Jan – 18 Feb
26 Apr
8-12 wk
15 Apr
21 Jun
0 wk
Cardoon
Cynara cardunculus
17 Feb – 17 Mar
27 Mar
8-12 wk
12 May
22 May
4 wk after
Regal-foxtail
Ptilotus nobilis
3 – 31 Mar
7 May
8-12 wk
26 May
2 Jul
6 wk after
Globe amaranth
Gomphrena globosa
31 Mar – 14 Apr
21 May
6-8 wk
26 May
2 Jul
6 wk after
Corn poppy
Papaver rhoeas
15 Apr
21 Jul
0 wk
9 Apr
11 Jul
1 wk before
Snapdragon
Antirrhinum majus
21 Jan – 18 Feb
16 May
8-12 wk
15 Apr
11 Jul
0 wk
20 Apr
1 Jul
1 wk after
Flossflower
Ageratum houstonianum
17 – 31 Mar
26 May
8-10 wk
26 May
21 Jul
6 wk after
Sweet pea
Lathyrus odoratus
18 Feb – 11 Mar
6 Jun
5-8 wk
15 Apr
11 Jul
0 wk
Stock
Matthiola incana
18 Feb – 4 Mar
9 Jun
6-8 wk
15 Apr
21 Jul
0 wk
28 Apr
11 Jul
2 wk after
Wormwood
Artemisia absinthium
18 Feb – 4 Mar
10 May
6-8 wk
15 Apr
21 Jun
0 wk
28 Apr
11 Jun
2 wk after
Mexican sunflower
Tithonia rotundifolia
14 – 28 Apr
30 May
4-6 wk
26 May
27 Jun
6 wk after
Garden pansy
Viola × wittrockiana
4 – 18 Feb
26 May
8-10 wk
15 Apr
21 Jul
0 wk
20 Apr
11 Jul
1 wk after
Petunia
Petunia
17 Feb – 17 Mar
16 May
8-12 wk
12 May
11 Jul
4 wk after
Sweet Scabious
Scabiosa atropurpurea
18 Feb – 4 Mar
10 May
6-8 wk
15 Apr
21 Jun
0 wk
26 May
11 Jun
6 wk after
Common zinnia
Zinnia elegans
31 Mar – 14 Apr
23 Jun
4-6 wk
12 May
21 Jul
4 wk after
Common morning glory
Ipomoea purpurea
21 Apr – 5 May
21 Jun
3-5 wk
26 May
12 Jul
6 wk after
Garden cosmos
Cosmos bipinnatus
31 Mar – 14 Apr
13 Jun
4-6 wk
12 May
11 Jul
4 wk after
26 May
1 Jul
6 wk after
Scarlet milkweed
Asclepias curassavica
21 Mar – 18 Apr
6 Jun
8-12 wk
13 Jun
1 Aug
8 wk after
Bee balm
Monarda didyma
21 Jan – 18 Feb
26 Apr
8-12 wk
15 Apr
21 Jun
0 wk
11 May
11 Jun
4 wk after
Yarrow
Achillea millefolium
18 Feb – 4 Mar
10 Apr
6-8 wk
15 Apr
22 May
0 wk
28 Apr
12 May
2 wk after
Safflower
Carthamus tinctorius
15 Apr
21 Jun
0 wk
9 Apr
11 Jun
1 wk before
Iceland poppy
Papaver nudicaule
Season too short
18 Feb – 4 Mar
30 May
6-8 wk
15 Apr
11 Jul
0 wk
28 Feb
1 Jul
7 wk before
Bishop's flower
Ammi majus
4 – 18 Mar
13 Jun
4-6 wk
15 Apr
11 Jul
0 wk
28 Apr
1 Jul
2 wk after
Drumsticks
Pycnosorus globosus
3 – 17 Mar
12 Apr
10-12 wk
26 May
21 Jun
6 wk after
Sunflower
Helianthus annuus
14 – 21 Apr
20 Jun
3-4 wk
12 May
11 Jul
4 wk after
11 May
1 Jul
4 wk after
China aster
Callistephus chinensis
17 – 31 Mar
9 Jun
6-8 wk
12 May
21 Jul
4 wk after
26 May
11 Jul
6 wk after
Annual phlox
Phlox drummondii
8 – 22 Mar
9 Jun
6-8 wk
3 May
21 Jul
3 wk after
26 May
11 Jul
6 wk after
Hollyhock
Alcea rosea
18 Feb – 4 Mar
6-8 wk
15 Apr
0 wk
28 Apr
2 wk after
Alpine delphinium
Delphinium elatum
21 Jan – 18 Feb
26 Apr
8-12 wk
15 Apr
21 Jun
0 wk
11 May
11 Jun
4 wk after
African marigold
Tagetes erecta
17 – 31 Mar
9 Jun
6-8 wk
12 May
21 Jul
4 wk after
Black-eyed Susan
Rudbeckia hirta
18 Feb – 4 Mar
30 May
6-8 wk
15 Apr
11 Jul
0 wk
26 May
1 Jul
6 wk after
Wood sage
Salvia nemorosa
4 – 18 Feb
16 Apr
8-10 wk
15 Apr
11 Jun
0 wk
11 May
1 Jun
4 wk after
Black-eyed susan vine
Thunbergia alata
17 Mar – 14 Apr
31 May
6-10 wk
26 May
12 Jul
6 wk after
California goldenpoppy
Eschscholzia californica
15 Apr
21 Jul
0 wk
9 Apr
11 Jul
1 wk before
Painted tongue
Salpiglossis sinuata
3 – 17 Mar
16 May
8-10 wk
12 May
11 Jul
4 wk after
Water forget-me-not
Myosotis scorpioides
Season too short
18 Feb – 4 Mar
10 May
6-8 wk
15 Apr
21 Jun
0 wk
2 Apr
11 Jun
2 wk before