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Rel. frost
Last spring frost (0°C) 4 Apr Frost 1 of 4 years · 20 years of data
Frost-free season 237 days 4 Apr – 27 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)
14 – 28 Feb
21 Jun
5-7 wk
4 Apr
26 Jul
0 wk
29 Mar
16 Jul
1 wk before
Broccoli
Brassica oleracea (Italica-gruppen)
21 Feb – 7 Mar
3 Jul
4-6 wk
4 Apr
31 Jul
0 wk
29 Mar
21 Jul
1 wk before
Chili pepper
Capsicum annuum
20 Feb – 20 Mar
28 Apr
8-12 wk
15 May
23 Jun
6 wk after
Curly Kale
Brassica oleracea (Curly Kale-gruppen)
14 – 28 Feb
16 Jun
5-7 wk
4 Apr
21 Jul
0 wk
22 Mar
11 Jul
2 wk before
Garden cucumber
Cucumis sativus
17 – 24 Apr
4 Jul
3-4 wk
15 May
25 Jul
6 wk after
Florence Fennel
Foeniculum vulgare
10 – 17 Apr
13 Jun
4-5 wk
15 May
11 Jul
6 wk after
15 May
1 Jul
6 wk after
Butter bean
Phaseolus lunatus
10 – 17 Jun
3-4 wk
8 Jul
14 wk after
Onion
Allium cepa (Cepa-gruppen)
10 Jan – 7 Feb
6 Apr
8-12 wk
4 Apr
1 Jun
0 wk
17 Apr
22 May
2 wk after
Onion (sets)
Allium cepa (Cepa-gruppen)
29 Mar
21 Jun
1 wk before
29 Mar
11 Jun
1 wk before
Maize
Zea mays
3 – 10 Apr
24 Jun
3-4 wk
1 May
15 Jul
4 wk after
Swiss Chard
Beta vulgaris (Flavescens-gruppen)
7 – 14 Mar
10 Jul
3-4 wk
4 Apr
31 Jul
0 wk
17 Apr
21 Jul
2 wk after
Carrot
Daucus carota subsp. sativus var. sativus
4 Apr
11 Jul
0 wk
22 Mar
1 Jul
2 wk before
Palm Kale
Brassica oleracea (Palm Kale-gruppen)
14 – 28 Feb
16 Jun
5-7 wk
4 Apr
21 Jul
0 wk
22 Mar
11 Jul
2 wk before
Potato
Solanum tuberosum
26 Feb – 12 Mar
13 Jun
4-6 wk
9 Apr
11 Jul
1 wk after
9 Apr
1 Jul
1 wk after
Ornamental Kale
Brassica oleracea (Ornamental-gruppen)
14 – 28 Feb
26 Jun
5-7 wk
4 Apr
31 Jul
0 wk
29 Mar
21 Jul
1 wk before
Pumpkin
Cucurbita pepo
17 – 24 Apr
15 Jul
3-4 wk
15 May
5 Aug
6 wk after
Beetroot
Beta vulgaris (Conditiva-gruppen)
7 – 14 Mar
6 Jul
3-4 wk
4 Apr
27 Jul
0 wk
17 Apr
17 Jul
2 wk after
Red Cabbage
Brassica oleracea (Red Cabbage-gruppen)
21 Feb – 7 Mar
28 Jun
4-6 wk
4 Apr
26 Jul
0 wk
Lettuce
Lactuca sativa
7 – 14 Mar
15 Jul
3-4 wk
4 Apr
5 Aug
0 wk
29 Mar
26 Jul
1 wk before
Savoy Cabbage
Brassica oleracea (Savoy Cabbage-gruppen)
21 Feb – 7 Mar
28 Jun
4-6 wk
4 Apr
26 Jul
0 wk
Shallot (bulbs)
Allium cepa (Aggregatum-gruppen)
22 Feb – 8 Mar
7 Jun
2-4 wk
22 Mar
21 Jun
2 wk before
22 Mar
11 Jun
2 wk before
Shallot (sets)
Allium cepa (Aggregatum-gruppen)
29 Mar
21 Jun
1 wk before
29 Mar
11 Jun
1 wk before
Spinach
Spinacia oleracea
7 – 14 Mar
30 Jul
3-4 wk
4 Apr
20 Aug
0 wk
15 Mar
10 Aug
3 wk before
Sweet potato
Ipomoea batatas
6 – 20 May
4-6 wk
17 Jun
11 wk after
Garden tomato
Solanum lycopersicum
6 – 20 Mar
3 Jun
6-8 wk
1 May
15 Jul
4 wk after
Tomatillo
Physalis ixocarpa
Common Bean
Phaseolus vulgaris
3 – 17 Apr
17 Jul
2-4 wk
1 May
31 Jul
4 wk after
15 May
21 Jul
6 wk after
White Cabbage
Brassica oleracea (White Cabbage-gruppen)
21 Feb – 7 Mar
28 Jun
4-6 wk
4 Apr
26 Jul
0 wk
Garden pea
Pisum sativum
7 – 14 Mar
30 Jun
3-4 wk
4 Apr
21 Jul
0 wk
29 Mar
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
3 – 17 Apr
23 Jun
4-6 wk
15 May
21 Jul
6 wk after
Lemon balm
Melissa officinalis
24 Jan – 7 Feb
26 May
8-10 wk
4 Apr
21 Jul
0 wk
30 Apr
11 Jul
4 wk after
Dill
Anethum graveolens
29 Mar
31 Jul
1 wk before
Wild chives
Allium schoenoprasum
Season too short
7 – 21 Feb
9 Jun
6-8 wk
4 Apr
21 Jul
0 wk
1 Mar
11 Jul
5 wk before
Spearmint
Mentha spicata
10 Jan – 7 Feb
26 May
8-12 wk
4 Apr
21 Jul
0 wk
30 Apr
11 Jul
4 wk after
Coriander
Coriandrum sativum
4 Apr
20 Aug
0 wk
17 Apr
10 Aug
2 wk after
Garden sage
Salvia officinalis
24 Jan – 7 Feb
11 May
8-10 wk
4 Apr
6 Jul
0 wk
Common thyme
Thymus vulgaris
24 Jan – 7 Feb
16 May
8-10 wk
4 Apr
11 Jul
0 wk
Oregano
Origanum vulgare
7 – 21 Feb
30 May
6-8 wk
4 Apr
11 Jul
0 wk
30 Apr
1 Jul
4 wk after
Parsley
Petroselinum crispum
7 – 21 Feb
30 May
6-8 wk
4 Apr
11 Jul
0 wk
29 Mar
1 Jul
1 wk before
Rosemary
Salvia rosmarinus
27 Dec – 24 Jan
12 Apr
10-14 wk
4 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
17 – 24 Apr
30 Jun
3-4 wk
15 May
21 Jul
6 wk after
Cornflower
Centaurea cyanus
4 Apr
21 Jul
0 wk
29 Mar
11 Jul
1 wk before
Statice
Limonium sinuatum
20 Feb – 6 Mar
16 May
8-10 wk
1 May
11 Jul
4 wk after
Sweet William
Dianthus barbatus
7 – 21 Feb
6-8 wk
4 Apr
0 wk
9 Apr
1 wk after
Snow-on-the-mountain
Euphorbia marginata
6 – 20 Mar
30 May
6-8 wk
1 May
11 Jul
4 wk after
17 Jun
1 Jul
11 wk after
Pinnate dahlia
Dahlia × pinnata
1 – 15 Mar
30 May
6-8 wk
26 Apr
11 Jul
3 wk after
Pinnate dahlia (tubers)
Dahlia × pinnata
5 Mar – 2 Apr
13 Jun
4-8 wk
30 Apr
11 Jul
4 wk after
30 Apr
1 Jul
4 wk after
Foxglove
Digitalis purpurea
24 Jan – 7 Feb
8-10 wk
4 Apr
0 wk
17 Apr
2 wk after
Busy lizzie
Impatiens walleriana
20 Feb – 20 Mar
11 Jul
8-12 wk
15 May
5 Sep
6 wk after
Creeping zinnia
Sanvitalia procumbens
6 – 20 Mar
9 Jun
6-8 wk
1 May
21 Jul
4 wk after
Hyacinth bean
Dolichos lablab
21 Apr – 5 May
18 May
4-6 wk
2 Jun
15 Jun
8 wk after
Chinese lantern
Physalis alkekengi
24 Jan – 7 Feb
26 Apr
8-10 wk
4 Apr
21 Jun
0 wk
Love in a mist
Nigella damascena
4 Apr
6 Jul
0 wk
29 Mar
26 Jun
1 wk before
Strawflower
Xerochrysum bracteatum
6 – 20 Mar
20 May
6-8 wk
1 May
1 Jul
4 wk after
17 Jun
21 Jun
11 wk after
Purple-top vervain
Verbena bonariensis
10 Jan – 7 Feb
26 Apr
8-12 wk
4 Apr
21 Jun
0 wk
Cardoon
Cynara cardunculus
6 Feb – 6 Mar
27 Mar
8-12 wk
1 May
22 May
4 wk after
Regal-foxtail
Ptilotus nobilis
20 Feb – 20 Mar
16 May
8-12 wk
15 May
11 Jul
6 wk after
Globe amaranth
Gomphrena globosa
20 Mar – 3 Apr
30 May
6-8 wk
15 May
11 Jul
6 wk after
Corn poppy
Papaver rhoeas
4 Apr
21 Jul
0 wk
29 Mar
11 Jul
1 wk before
Snapdragon
Antirrhinum majus
10 Jan – 7 Feb
16 May
8-12 wk
4 Apr
11 Jul
0 wk
9 Apr
1 Jul
1 wk after
Flossflower
Ageratum houstonianum
6 – 20 Mar
26 May
8-10 wk
15 May
21 Jul
6 wk after
Sweet pea
Lathyrus odoratus
7 – 28 Feb
6 Jun
5-8 wk
4 Apr
11 Jul
0 wk
Stock
Matthiola incana
7 – 21 Feb
9 Jun
6-8 wk
4 Apr
21 Jul
0 wk
17 Apr
11 Jul
2 wk after
Wormwood
Artemisia absinthium
7 – 21 Feb
10 May
6-8 wk
4 Apr
21 Jun
0 wk
17 Apr
11 Jun
2 wk after
Mexican sunflower
Tithonia rotundifolia
3 – 17 Apr
8 Jun
4-6 wk
15 May
6 Jul
6 wk after
Garden pansy
Viola × wittrockiana
24 Jan – 7 Feb
26 May
8-10 wk
4 Apr
21 Jul
0 wk
9 Apr
11 Jul
1 wk after
Petunia
Petunia
6 Feb – 6 Mar
16 May
8-12 wk
1 May
11 Jul
4 wk after
Sweet Scabious
Scabiosa atropurpurea
7 – 21 Feb
10 May
6-8 wk
4 Apr
21 Jun
0 wk
15 May
11 Jun
6 wk after
Common zinnia
Zinnia elegans
20 Mar – 3 Apr
23 Jun
4-6 wk
1 May
21 Jul
4 wk after
Common morning glory
Ipomoea purpurea
10 – 24 Apr
30 Jun
3-5 wk
15 May
21 Jul
6 wk after
Garden cosmos
Cosmos bipinnatus
20 Mar – 3 Apr
13 Jun
4-6 wk
1 May
11 Jul
4 wk after
15 May
1 Jul
6 wk after
Scarlet milkweed
Asclepias curassavica
10 Mar – 7 Apr
15 Jun
8-12 wk
2 Jun
10 Aug
8 wk after
Bee balm
Monarda didyma
10 Jan – 7 Feb
26 Apr
8-12 wk
4 Apr
21 Jun
0 wk
30 Apr
11 Jun
4 wk after
Yarrow
Achillea millefolium
7 – 21 Feb
10 Apr
6-8 wk
4 Apr
22 May
0 wk
17 Apr
12 May
2 wk after
Safflower
Carthamus tinctorius
4 Apr
21 Jun
0 wk
29 Mar
11 Jun
1 wk before
Iceland poppy
Papaver nudicaule
Season too short
7 – 21 Feb
30 May
6-8 wk
4 Apr
11 Jul
0 wk
17 Feb
1 Jul
7 wk before
Bishop's flower
Ammi majus
21 Feb – 7 Mar
13 Jun
4-6 wk
4 Apr
11 Jul
0 wk
17 Apr
1 Jul
2 wk after
Drumsticks
Pycnosorus globosus
20 Feb – 6 Mar
12 Apr
10-12 wk
15 May
21 Jun
6 wk after
Sunflower
Helianthus annuus
3 – 10 Apr
20 Jun
3-4 wk
1 May
11 Jul
4 wk after
30 Apr
1 Jul
4 wk after
China aster
Callistephus chinensis
6 – 20 Mar
9 Jun
6-8 wk
1 May
21 Jul
4 wk after
15 May
11 Jul
6 wk after
Annual phlox
Phlox drummondii
25 Feb – 11 Mar
9 Jun
6-8 wk
22 Apr
21 Jul
3 wk after
15 May
11 Jul
6 wk after
Hollyhock
Alcea rosea
7 – 21 Feb
6-8 wk
4 Apr
0 wk
17 Apr
2 wk after
Alpine delphinium
Delphinium elatum
10 Jan – 7 Feb
26 Apr
8-12 wk
4 Apr
21 Jun
0 wk
30 Apr
11 Jun
4 wk after
African marigold
Tagetes erecta
6 – 20 Mar
9 Jun
6-8 wk
1 May
21 Jul
4 wk after
Black-eyed Susan
Rudbeckia hirta
7 – 21 Feb
30 May
6-8 wk
4 Apr
11 Jul
0 wk
15 May
1 Jul
6 wk after
Wood sage
Salvia nemorosa
24 Jan – 7 Feb
16 Apr
8-10 wk
4 Apr
11 Jun
0 wk
30 Apr
1 Jun
4 wk after
Black-eyed susan vine
Thunbergia alata
6 Mar – 3 Apr
9 Jun
6-10 wk
15 May
21 Jul
6 wk after
California goldenpoppy
Eschscholzia californica
4 Apr
21 Jul
0 wk
29 Mar
11 Jul
1 wk before
Painted tongue
Salpiglossis sinuata
20 Feb – 6 Mar
16 May
8-10 wk
1 May
11 Jul
4 wk after
Water forget-me-not
Myosotis scorpioides
Season too short
7 – 21 Feb
10 May
6-8 wk
4 Apr
21 Jun
0 wk
22 Mar
11 Jun
2 wk before