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Method
Rel. frost
Last spring frost (0°C) 5 Apr Frost 3 of 4 years · 20 years of data
Frost-free season 205 days 5 Apr – 27 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)
15 Feb – 1 Mar
19 Jun
5-7 wk
5 Apr
24 Jul
0 wk
29 Mar
14 Jul
1 wk before
Broccoli
Brassica oleracea (Italica-gruppen)
22 Feb – 8 Mar
1 Jul
4-6 wk
5 Apr
29 Jul
0 wk
29 Mar
19 Jul
1 wk before
Chili pepper
Capsicum annuum
2 – 30 Mar
4 Apr
8-12 wk
25 May
30 May
7 wk after
Curly Kale
Brassica oleracea (Curly Kale-gruppen)
15 Feb – 1 Mar
14 Jun
5-7 wk
5 Apr
19 Jul
0 wk
24 Mar
9 Jul
2 wk before
Garden cucumber
Cucumis sativus
27 Apr – 4 May
14 Jun
3-4 wk
25 May
5 Jul
7 wk after
Florence Fennel
Foeniculum vulgare
20 – 27 Apr
11 Jun
4-5 wk
25 May
9 Jul
7 wk after
11 May
29 Jun
5 wk after
Butter bean
Phaseolus lunatus
Fleece
27 May – 3 Jun
3-4 wk
24 Jun
11 wk after
Onion
Allium cepa (Cepa-gruppen)
11 Jan – 8 Feb
4 Apr
8-12 wk
5 Apr
30 May
0 wk
15 Apr
20 May
1 wk after
Onion (sets)
Allium cepa (Cepa-gruppen)
29 Mar
19 Jun
1 wk before
29 Mar
9 Jun
1 wk before
Maize
Zea mays
15 – 22 Apr
4 Jun
3-4 wk
13 May
25 Jun
5 wk after
Swiss Chard
Beta vulgaris (Flavescens-gruppen)
10 – 17 Mar
8 Jul
3-4 wk
7 Apr
29 Jul
0 wk
15 Apr
19 Jul
1 wk after
Carrot
Daucus carota subsp. sativus var. sativus
5 Apr
9 Jul
0 wk
24 Mar
29 Jun
2 wk before
Palm Kale
Brassica oleracea (Palm Kale-gruppen)
15 Feb – 1 Mar
14 Jun
5-7 wk
5 Apr
19 Jul
0 wk
24 Mar
9 Jul
2 wk before
Potato
Solanum tuberosum
27 Feb – 13 Mar
9 Jun
4-6 wk
10 Apr
7 Jul
1 wk after
10 Apr
27 Jun
1 wk after
Ornamental Kale
Brassica oleracea (Ornamental-gruppen)
15 Feb – 1 Mar
24 Jun
5-7 wk
5 Apr
29 Jul
0 wk
29 Mar
19 Jul
1 wk before
Pumpkin
Cucurbita pepo
27 Apr – 4 May
30 Jun
3-4 wk
25 May
21 Jul
7 wk after
Beetroot
Beta vulgaris (Conditiva-gruppen)
10 – 17 Mar
16 Jun
3-4 wk
7 Apr
7 Jul
0 wk
15 Apr
27 Jun
1 wk after
Red Cabbage
Brassica oleracea (Red Cabbage-gruppen)
22 Feb – 8 Mar
26 Jun
4-6 wk
5 Apr
24 Jul
0 wk
Lettuce
Lactuca sativa
8 – 15 Mar
13 Jul
3-4 wk
5 Apr
3 Aug
0 wk
29 Mar
24 Jul
1 wk before
Savoy Cabbage
Brassica oleracea (Savoy Cabbage-gruppen)
22 Feb – 8 Mar
26 Jun
4-6 wk
5 Apr
24 Jul
0 wk
Shallot (bulbs)
Allium cepa (Aggregatum-gruppen)
24 Feb – 10 Mar
5 Jun
2-4 wk
24 Mar
19 Jun
2 wk before
24 Mar
9 Jun
2 wk before
Shallot (sets)
Allium cepa (Aggregatum-gruppen)
29 Mar
19 Jun
1 wk before
29 Mar
9 Jun
1 wk before
Spinach
Spinacia oleracea
8 – 15 Mar
28 Jul
3-4 wk
5 Apr
18 Aug
0 wk
18 Mar
8 Aug
3 wk before
Sweet potato
Ipomoea batatas
2 – 16 May
4-6 wk
13 Jun
10 wk after
Garden tomato
Solanum lycopersicum
18 Mar – 1 Apr
14 May
6-8 wk
13 May
25 Jun
5 wk after
Tomatillo
Physalis ixocarpa
Common Bean
Phaseolus vulgaris
15 – 29 Apr
2 Jul
2-4 wk
13 May
16 Jul
5 wk after
11 May
6 Jul
5 wk after
White Cabbage
Brassica oleracea (White Cabbage-gruppen)
22 Feb – 8 Mar
26 Jun
4-6 wk
5 Apr
24 Jul
0 wk
Garden pea
Pisum sativum
8 – 15 Mar
28 Jun
3-4 wk
5 Apr
19 Jul
0 wk
29 Mar
9 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
13 – 27 Apr
8 Jun
4-6 wk
25 May
6 Jul
7 wk after
Lemon balm
Melissa officinalis
25 Jan – 8 Feb
24 May
8-10 wk
5 Apr
19 Jul
0 wk
26 Apr
9 Jul
3 wk after
Dill
Anethum graveolens
29 Mar
29 Jul
1 wk before
Wild chives
Allium schoenoprasum
8 – 22 Feb
7 Jun
6-8 wk
5 Apr
19 Jul
0 wk
29 Mar
9 Jul
1 wk before
Spearmint
Mentha spicata
11 Jan – 8 Feb
24 May
8-12 wk
5 Apr
19 Jul
0 wk
26 Apr
9 Jul
3 wk after
Coriander
Coriandrum sativum
5 Apr
18 Aug
0 wk
15 Apr
8 Aug
1 wk after
Garden sage
Salvia officinalis
27 Jan – 10 Feb
9 May
8-10 wk
7 Apr
4 Jul
0 wk
Common thyme
Thymus vulgaris
25 Jan – 8 Feb
14 May
8-10 wk
5 Apr
9 Jul
0 wk
Oregano
Origanum vulgare
8 – 22 Feb
28 May
6-8 wk
5 Apr
9 Jul
0 wk
26 Apr
29 Jun
3 wk after
Parsley
Petroselinum crispum
8 – 22 Feb
28 May
6-8 wk
5 Apr
9 Jul
0 wk
29 Mar
29 Jun
1 wk before
Rosemary
Salvia rosmarinus
30 Dec – 27 Jan
10 Apr
10-14 wk
7 Apr
19 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
27 Apr – 4 May
15 Jun
3-4 wk
25 May
6 Jul
7 wk after
Cornflower
Centaurea cyanus
5 Apr
19 Jul
0 wk
29 Mar
9 Jul
1 wk before
Statice
Limonium sinuatum
4 – 18 Mar
14 May
8-10 wk
13 May
9 Jul
5 wk after
Sweet William
Dianthus barbatus
8 – 22 Feb
6-8 wk
5 Apr
0 wk
10 Apr
1 wk after
Snow-on-the-mountain
Euphorbia marginata
18 Mar – 1 Apr
28 May
6-8 wk
13 May
9 Jul
5 wk after
13 Jun
29 Jun
10 wk after
Pinnate dahlia
Dahlia × pinnata
11 – 25 Mar
28 May
6-8 wk
6 May
9 Jul
4 wk after
Pinnate dahlia (tubers)
Dahlia × pinnata
1 – 29 Mar
11 Jun
4-8 wk
26 Apr
9 Jul
3 wk after
26 Apr
29 Jun
3 wk after
Foxglove
Digitalis purpurea
25 Jan – 8 Feb
8-10 wk
5 Apr
0 wk
15 Apr
1 wk after
Busy lizzie
Impatiens walleriana
2 – 30 Mar
6 Jul
8-12 wk
25 May
31 Aug
7 wk after
Creeping zinnia
Sanvitalia procumbens
18 Mar – 1 Apr
7 Jun
6-8 wk
13 May
19 Jul
5 wk after
Hyacinth bean
Dolichos lablab
Fleece
13 – 27 Apr
9 May
4-6 wk
25 May
6 Jun
7 wk after
Chinese lantern
Physalis alkekengi
27 Jan – 10 Feb
24 Apr
8-10 wk
7 Apr
19 Jun
0 wk
Love in a mist
Nigella damascena
5 Apr
4 Jul
0 wk
29 Mar
24 Jun
1 wk before
Strawflower
Xerochrysum bracteatum
18 Mar – 1 Apr
18 May
6-8 wk
13 May
29 Jun
5 wk after
13 Jun
19 Jun
10 wk after
Purple-top vervain
Verbena bonariensis
13 Jan – 10 Feb
24 Apr
8-12 wk
7 Apr
19 Jun
0 wk
Cardoon
Cynara cardunculus
18 Feb – 18 Mar
25 Mar
8-12 wk
13 May
20 May
5 wk after
Regal-foxtail
Ptilotus nobilis
2 – 30 Mar
1 May
8-12 wk
25 May
26 Jun
7 wk after
Globe amaranth
Gomphrena globosa
30 Mar – 13 Apr
15 May
6-8 wk
25 May
26 Jun
7 wk after
Corn poppy
Papaver rhoeas
5 Apr
19 Jul
0 wk
29 Mar
9 Jul
1 wk before
Snapdragon
Antirrhinum majus
11 Jan – 8 Feb
14 May
8-12 wk
5 Apr
9 Jul
0 wk
10 Apr
29 Jun
1 wk after
Flossflower
Ageratum houstonianum
16 – 30 Mar
24 May
8-10 wk
25 May
19 Jul
7 wk after
Sweet pea
Lathyrus odoratus
8 Feb – 1 Mar
4 Jun
5-8 wk
5 Apr
9 Jul
0 wk
Stock
Matthiola incana
8 – 22 Feb
7 Jun
6-8 wk
5 Apr
19 Jul
0 wk
15 Apr
9 Jul
1 wk after
Wormwood
Artemisia absinthium
8 – 22 Feb
8 May
6-8 wk
5 Apr
19 Jun
0 wk
15 Apr
9 Jun
1 wk after
Mexican sunflower
Tithonia rotundifolia
13 – 27 Apr
24 May
4-6 wk
25 May
21 Jun
7 wk after
Garden pansy
Viola × wittrockiana
25 Jan – 8 Feb
24 May
8-10 wk
5 Apr
19 Jul
0 wk
10 Apr
9 Jul
1 wk after
Petunia
Petunia
18 Feb – 18 Mar
14 May
8-12 wk
13 May
9 Jul
5 wk after
Sweet Scabious
Scabiosa atropurpurea
10 – 24 Feb
8 May
6-8 wk
7 Apr
19 Jun
0 wk
11 May
9 Jun
5 wk after
Common zinnia
Zinnia elegans
1 – 15 Apr
18 Jun
4-6 wk
13 May
16 Jul
5 wk after
Common morning glory
Ipomoea purpurea
20 Apr – 4 May
15 Jun
3-5 wk
25 May
6 Jul
7 wk after
Garden cosmos
Cosmos bipinnatus
1 – 15 Apr
11 Jun
4-6 wk
13 May
9 Jul
5 wk after
11 May
29 Jun
5 wk after
Scarlet milkweed
Asclepias curassavica
22 Mar – 19 Apr
31 May
8-12 wk
14 Jun
26 Jul
10 wk after
Bee balm
Monarda didyma
11 Jan – 8 Feb
24 Apr
8-12 wk
5 Apr
19 Jun
0 wk
26 Apr
9 Jun
3 wk after
Yarrow
Achillea millefolium
8 – 22 Feb
8 Apr
6-8 wk
5 Apr
20 May
0 wk
15 Apr
10 May
1 wk after
Safflower
Carthamus tinctorius
5 Apr
19 Jun
0 wk
29 Mar
9 Jun
1 wk before
Iceland poppy
Papaver nudicaule
Season too short
8 – 22 Feb
28 May
6-8 wk
5 Apr
9 Jul
0 wk
25 Feb
29 Jun
6 wk before
Bishop's flower
Ammi majus
22 Feb – 8 Mar
11 Jun
4-6 wk
5 Apr
9 Jul
0 wk
15 Apr
29 Jun
1 wk after
Drumsticks
Pycnosorus globosus
2 – 16 Mar
7 Apr
10-12 wk
25 May
16 Jun
7 wk after
Sunflower
Helianthus annuus
15 – 22 Apr
18 Jun
3-4 wk
13 May
9 Jul
5 wk after
26 Apr
29 Jun
3 wk after
China aster
Callistephus chinensis
18 Mar – 1 Apr
7 Jun
6-8 wk
13 May
19 Jul
5 wk after
11 May
9 Jul
5 wk after
Annual phlox
Phlox drummondii
4 – 18 Mar
7 Jun
6-8 wk
29 Apr
19 Jul
3 wk after
11 May
9 Jul
5 wk after
Hollyhock
Alcea rosea
8 – 22 Feb
6-8 wk
5 Apr
0 wk
15 Apr
1 wk after
Alpine delphinium
Delphinium elatum
11 Jan – 8 Feb
24 Apr
8-12 wk
5 Apr
19 Jun
0 wk
26 Apr
9 Jun
3 wk after
African marigold
Tagetes erecta
18 Mar – 1 Apr
7 Jun
6-8 wk
13 May
19 Jul
5 wk after
Black-eyed Susan
Rudbeckia hirta
10 – 24 Feb
28 May
6-8 wk
7 Apr
9 Jul
0 wk
11 May
29 Jun
5 wk after
Wood sage
Salvia nemorosa
25 Jan – 8 Feb
14 Apr
8-10 wk
5 Apr
9 Jun
0 wk
26 Apr
30 May
3 wk after
Black-eyed susan vine
Thunbergia alata
16 Mar – 13 Apr
25 May
6-10 wk
25 May
6 Jul
7 wk after
California goldenpoppy
Eschscholzia californica
5 Apr
19 Jul
0 wk
29 Mar
9 Jul
1 wk before
Painted tongue
Salpiglossis sinuata
4 – 18 Mar
14 May
8-10 wk
13 May
9 Jul
5 wk after
Water forget-me-not
Myosotis scorpioides
8 – 22 Feb
8 May
6-8 wk
5 Apr
19 Jun
0 wk
15 Apr
9 Jun
1 wk after