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