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Method
Rel. frost
Last spring frost (0°C) 3 Apr Frost 3 of 4 years · 20 years of data
Frost-free season 204 days 3 Apr – 24 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)
13 – 27 Feb
22 Jun
5-7 wk
3 Apr
27 Jul
0 wk
28 Mar
17 Jul
1 wk before
Broccoli
Brassica oleracea (Italica-gruppen)
20 Feb – 6 Mar
4 Jul
4-6 wk
3 Apr
1 Aug
0 wk
28 Mar
22 Jul
1 wk before
Chili pepper
Capsicum annuum
28 Feb – 28 Mar
14 Apr
8-12 wk
23 May
9 Jun
7 wk after
Curly Kale
Brassica oleracea (Curly Kale-gruppen)
13 – 27 Feb
17 Jun
5-7 wk
3 Apr
22 Jul
0 wk
21 Mar
12 Jul
2 wk before
Garden cucumber
Cucumis sativus
25 Apr – 2 May
17 Jun
3-4 wk
23 May
8 Jul
7 wk after
Florence Fennel
Foeniculum vulgare
18 – 25 Apr
14 Jun
4-5 wk
23 May
12 Jul
7 wk after
14 May
2 Jul
6 wk after
Butter bean
Phaseolus lunatus
Fleece
25 May – 1 Jun
5 Jun
3-4 wk
22 Jun
26 Jun
11 wk after
Onion
Allium cepa (Cepa-gruppen)
9 Jan – 6 Feb
7 Apr
8-12 wk
3 Apr
2 Jun
0 wk
16 Apr
23 May
2 wk after
Onion (sets)
Allium cepa (Cepa-gruppen)
28 Mar
22 Jun
1 wk before
28 Mar
12 Jun
1 wk before
Maize
Zea mays
13 – 20 Apr
7 Jun
3-4 wk
11 May
28 Jun
5 wk after
Swiss Chard
Beta vulgaris (Flavescens-gruppen)
8 – 15 Mar
11 Jul
3-4 wk
5 Apr
1 Aug
0 wk
16 Apr
22 Jul
2 wk after
Carrot
Daucus carota subsp. sativus var. sativus
3 Apr
12 Jul
0 wk
21 Mar
2 Jul
2 wk before
Palm Kale
Brassica oleracea (Palm Kale-gruppen)
13 – 27 Feb
17 Jun
5-7 wk
3 Apr
22 Jul
0 wk
21 Mar
12 Jul
2 wk before
Potato
Solanum tuberosum
25 Feb – 11 Mar
14 Jun
4-6 wk
8 Apr
12 Jul
1 wk after
8 Apr
2 Jul
1 wk after
Ornamental Kale
Brassica oleracea (Ornamental-gruppen)
13 – 27 Feb
27 Jun
5-7 wk
3 Apr
1 Aug
0 wk
28 Mar
22 Jul
1 wk before
Pumpkin
Cucurbita pepo
25 Apr – 2 May
10 Jul
3-4 wk
23 May
31 Jul
7 wk after
Beetroot
Beta vulgaris (Conditiva-gruppen)
8 – 15 Mar
1 Jul
3-4 wk
5 Apr
22 Jul
0 wk
16 Apr
12 Jul
2 wk after
Red Cabbage
Brassica oleracea (Red Cabbage-gruppen)
20 Feb – 6 Mar
29 Jun
4-6 wk
3 Apr
27 Jul
0 wk
Lettuce
Lactuca sativa
6 – 13 Mar
16 Jul
3-4 wk
3 Apr
6 Aug
0 wk
28 Mar
27 Jul
1 wk before
Savoy Cabbage
Brassica oleracea (Savoy Cabbage-gruppen)
20 Feb – 6 Mar
29 Jun
4-6 wk
3 Apr
27 Jul
0 wk
Shallot (bulbs)
Allium cepa (Aggregatum-gruppen)
21 Feb – 7 Mar
8 Jun
2-4 wk
21 Mar
22 Jun
2 wk before
21 Mar
12 Jun
2 wk before
Shallot (sets)
Allium cepa (Aggregatum-gruppen)
28 Mar
22 Jun
1 wk before
28 Mar
12 Jun
1 wk before
Spinach
Spinacia oleracea
6 – 13 Mar
31 Jul
3-4 wk
3 Apr
21 Aug
0 wk
14 Mar
11 Aug
3 wk before
Sweet potato
Ipomoea batatas
5 – 19 May
4-6 wk
16 Jun
11 wk after
Garden tomato
Solanum lycopersicum
16 – 30 Mar
17 May
6-8 wk
11 May
28 Jun
5 wk after
Tomatillo
Physalis ixocarpa
Common Bean
Phaseolus vulgaris
13 – 27 Apr
12 Jul
2-4 wk
11 May
26 Jul
5 wk after
14 May
16 Jul
6 wk after
White Cabbage
Brassica oleracea (White Cabbage-gruppen)
20 Feb – 6 Mar
29 Jun
4-6 wk
3 Apr
27 Jul
0 wk
Garden pea
Pisum sativum
6 – 13 Mar
1 Jul
3-4 wk
3 Apr
22 Jul
0 wk
28 Mar
12 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
11 – 25 Apr
18 Jun
4-6 wk
23 May
16 Jul
7 wk after
Lemon balm
Melissa officinalis
23 Jan – 6 Feb
27 May
8-10 wk
3 Apr
22 Jul
0 wk
29 Apr
12 Jul
4 wk after
Dill
Anethum graveolens
28 Mar
1 Aug
1 wk before
Wild chives
Allium schoenoprasum
6 – 20 Feb
10 Jun
6-8 wk
3 Apr
22 Jul
0 wk
28 Mar
12 Jul
1 wk before
Spearmint
Mentha spicata
9 Jan – 6 Feb
27 May
8-12 wk
3 Apr
22 Jul
0 wk
29 Apr
12 Jul
4 wk after
Coriander
Coriandrum sativum
3 Apr
21 Aug
0 wk
16 Apr
11 Aug
2 wk after
Garden sage
Salvia officinalis
25 Jan – 8 Feb
12 May
8-10 wk
5 Apr
7 Jul
0 wk
Common thyme
Thymus vulgaris
23 Jan – 6 Feb
17 May
8-10 wk
3 Apr
12 Jul
0 wk
Oregano
Origanum vulgare
6 – 20 Feb
31 May
6-8 wk
3 Apr
12 Jul
0 wk
29 Apr
2 Jul
4 wk after
Parsley
Petroselinum crispum
6 – 20 Feb
31 May
6-8 wk
3 Apr
12 Jul
0 wk
28 Mar
2 Jul
1 wk before
Rosemary
Salvia rosmarinus
28 Dec – 25 Jan
13 Apr
10-14 wk
5 Apr
22 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
25 Apr – 2 May
25 Jun
3-4 wk
23 May
16 Jul
7 wk after
Cornflower
Centaurea cyanus
3 Apr
22 Jul
0 wk
28 Mar
12 Jul
1 wk before
Statice
Limonium sinuatum
2 – 16 Mar
17 May
8-10 wk
11 May
12 Jul
5 wk after
Sweet William
Dianthus barbatus
6 – 20 Feb
6-8 wk
3 Apr
0 wk
8 Apr
1 wk after
Snow-on-the-mountain
Euphorbia marginata
16 – 30 Mar
31 May
6-8 wk
11 May
12 Jul
5 wk after
16 Jun
2 Jul
11 wk after
Pinnate dahlia
Dahlia × pinnata
9 – 23 Mar
31 May
6-8 wk
4 May
12 Jul
4 wk after
Pinnate dahlia (tubers)
Dahlia × pinnata
4 Mar – 1 Apr
14 Jun
4-8 wk
29 Apr
12 Jul
4 wk after
29 Apr
2 Jul
4 wk after
Foxglove
Digitalis purpurea
23 Jan – 6 Feb
8-10 wk
3 Apr
0 wk
16 Apr
2 wk after
Busy lizzie
Impatiens walleriana
28 Feb – 28 Mar
12 Jul
8-12 wk
23 May
6 Sep
7 wk after
Creeping zinnia
Sanvitalia procumbens
16 – 30 Mar
10 Jun
6-8 wk
11 May
22 Jul
5 wk after
Hyacinth bean
Dolichos lablab
1 – 15 May
1 May
4-6 wk
12 Jun
10 wk after
Chinese lantern
Physalis alkekengi
25 Jan – 8 Feb
27 Apr
8-10 wk
5 Apr
22 Jun
0 wk
Love in a mist
Nigella damascena
3 Apr
7 Jul
0 wk
28 Mar
27 Jun
1 wk before
Strawflower
Xerochrysum bracteatum
16 – 30 Mar
21 May
6-8 wk
11 May
2 Jul
5 wk after
16 Jun
22 Jun
11 wk after
Purple-top vervain
Verbena bonariensis
11 Jan – 8 Feb
27 Apr
8-12 wk
5 Apr
22 Jun
0 wk
Cardoon
Cynara cardunculus
16 Feb – 16 Mar
28 Mar
8-12 wk
11 May
23 May
5 wk after
Regal-foxtail
Ptilotus nobilis
28 Feb – 28 Mar
11 May
8-12 wk
23 May
6 Jul
7 wk after
Globe amaranth
Gomphrena globosa
28 Mar – 11 Apr
25 May
6-8 wk
23 May
6 Jul
7 wk after
Corn poppy
Papaver rhoeas
3 Apr
22 Jul
0 wk
28 Mar
12 Jul
1 wk before
Snapdragon
Antirrhinum majus
9 Jan – 6 Feb
17 May
8-12 wk
3 Apr
12 Jul
0 wk
8 Apr
2 Jul
1 wk after
Flossflower
Ageratum houstonianum
14 – 28 Mar
27 May
8-10 wk
23 May
22 Jul
7 wk after
Sweet pea
Lathyrus odoratus
6 – 27 Feb
7 Jun
5-8 wk
3 Apr
12 Jul
0 wk
Stock
Matthiola incana
6 – 20 Feb
10 Jun
6-8 wk
3 Apr
22 Jul
0 wk
16 Apr
12 Jul
2 wk after
Wormwood
Artemisia absinthium
6 – 20 Feb
11 May
6-8 wk
3 Apr
22 Jun
0 wk
16 Apr
12 Jun
2 wk after
Mexican sunflower
Tithonia rotundifolia
11 – 25 Apr
3 Jun
4-6 wk
23 May
1 Jul
7 wk after
Garden pansy
Viola × wittrockiana
23 Jan – 6 Feb
27 May
8-10 wk
3 Apr
22 Jul
0 wk
8 Apr
12 Jul
1 wk after
Petunia
Petunia
16 Feb – 16 Mar
17 May
8-12 wk
11 May
12 Jul
5 wk after
Sweet Scabious
Scabiosa atropurpurea
8 – 22 Feb
11 May
6-8 wk
5 Apr
22 Jun
0 wk
14 May
12 Jun
6 wk after
Common zinnia
Zinnia elegans
30 Mar – 13 Apr
24 Jun
4-6 wk
11 May
22 Jul
5 wk after
Common morning glory
Ipomoea purpurea
18 Apr – 2 May
25 Jun
3-5 wk
23 May
16 Jul
7 wk after
Garden cosmos
Cosmos bipinnatus
30 Mar – 13 Apr
14 Jun
4-6 wk
11 May
12 Jul
5 wk after
14 May
2 Jul
6 wk after
Scarlet milkweed
Asclepias curassavica
20 Mar – 17 Apr
10 Jun
8-12 wk
12 Jun
5 Aug
10 wk after
Bee balm
Monarda didyma
9 Jan – 6 Feb
27 Apr
8-12 wk
3 Apr
22 Jun
0 wk
29 Apr
12 Jun
4 wk after
Yarrow
Achillea millefolium
6 – 20 Feb
11 Apr
6-8 wk
3 Apr
23 May
0 wk
16 Apr
13 May
2 wk after
Safflower
Carthamus tinctorius
3 Apr
22 Jun
0 wk
28 Mar
12 Jun
1 wk before
Iceland poppy
Papaver nudicaule
Season too short
6 – 20 Feb
31 May
6-8 wk
3 Apr
12 Jul
0 wk
16 Feb
2 Jul
7 wk before
Bishop's flower
Ammi majus
20 Feb – 6 Mar
14 Jun
4-6 wk
3 Apr
12 Jul
0 wk
16 Apr
2 Jul
2 wk after
Drumsticks
Pycnosorus globosus
28 Feb – 14 Mar
13 Apr
10-12 wk
23 May
22 Jun
7 wk after
Sunflower
Helianthus annuus
13 – 20 Apr
21 Jun
3-4 wk
11 May
12 Jul
5 wk after
29 Apr
2 Jul
4 wk after
China aster
Callistephus chinensis
16 – 30 Mar
10 Jun
6-8 wk
11 May
22 Jul
5 wk after
14 May
12 Jul
6 wk after
Annual phlox
Phlox drummondii
2 – 16 Mar
10 Jun
6-8 wk
27 Apr
22 Jul
3 wk after
14 May
12 Jul
6 wk after
Hollyhock
Alcea rosea
6 – 20 Feb
6-8 wk
3 Apr
0 wk
16 Apr
2 wk after
Alpine delphinium
Delphinium elatum
9 Jan – 6 Feb
27 Apr
8-12 wk
3 Apr
22 Jun
0 wk
29 Apr
12 Jun
4 wk after
African marigold
Tagetes erecta
16 – 30 Mar
10 Jun
6-8 wk
11 May
22 Jul
5 wk after
Black-eyed Susan
Rudbeckia hirta
8 – 22 Feb
31 May
6-8 wk
5 Apr
12 Jul
0 wk
14 May
2 Jul
6 wk after
Wood sage
Salvia nemorosa
23 Jan – 6 Feb
17 Apr
8-10 wk
3 Apr
12 Jun
0 wk
29 Apr
2 Jun
4 wk after
Black-eyed susan vine
Thunbergia alata
14 Mar – 11 Apr
4 Jun
6-10 wk
23 May
16 Jul
7 wk after
California goldenpoppy
Eschscholzia californica
3 Apr
22 Jul
0 wk
28 Mar
12 Jul
1 wk before
Painted tongue
Salpiglossis sinuata
2 – 16 Mar
17 May
8-10 wk
11 May
12 Jul
5 wk after
Water forget-me-not
Myosotis scorpioides
6 – 20 Feb
11 May
6-8 wk
3 Apr
22 Jun
0 wk
16 Apr
12 Jun
2 wk after