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Method
Rel. frost
Last spring frost (0°C) 19 Apr Frost 3 of 4 years · 20 years of data
Frost-free season 177 days 19 Apr – 13 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)
1 – 15 Mar
18 Jun
5-7 wk
19 Apr
23 Jul
0 wk
12 Apr
13 Jul
1 wk before
Broccoli
Brassica oleracea (Italica-gruppen)
8 – 22 Mar
30 Jun
4-6 wk
19 Apr
28 Jul
0 wk
12 Apr
18 Jul
1 wk before
Chili pepper
Capsicum annuum
2 – 30 Mar
27 Mar
8-12 wk
25 May
5 wk after
Curly Kale
Brassica oleracea (Curly Kale-gruppen)
1 – 15 Mar
13 Jun
5-7 wk
19 Apr
18 Jul
0 wk
7 Apr
8 Jul
2 wk before
Garden cucumber
Cucumis sativus
27 Apr – 4 May
12 Jun
3-4 wk
25 May
3 Jul
5 wk after
Florence Fennel
Foeniculum vulgare
20 – 27 Apr
10 Jun
4-5 wk
25 May
8 Jul
5 wk after
25 May
28 Jun
5 wk after
Butter bean
Phaseolus lunatus
Fleece
18 – 25 May
23 May
3-4 wk
15 Jun
8 wk after
Onion
Allium cepa (Cepa-gruppen)
25 Jan – 22 Feb
3 Apr
8-12 wk
19 Apr
29 May
0 wk
29 Apr
19 May
1 wk after
Onion (sets)
Allium cepa (Cepa-gruppen)
12 Apr
18 Jun
1 wk before
12 Apr
8 Jun
1 wk before
Maize
Zea mays
10 – 17 Apr
2 Jun
3-4 wk
8 May
23 Jun
3 wk after
Swiss Chard
Beta vulgaris (Flavescens-gruppen)
28 Mar – 4 Apr
7 Jul
3-4 wk
25 Apr
28 Jul
1 wk after
29 Apr
18 Jul
1 wk after
Carrot
Daucus carota subsp. sativus var. sativus
19 Apr
8 Jul
0 wk
7 Apr
28 Jun
2 wk before
Palm Kale
Brassica oleracea (Palm Kale-gruppen)
1 – 15 Mar
13 Jun
5-7 wk
19 Apr
18 Jul
0 wk
7 Apr
8 Jul
2 wk before
Potato
Solanum tuberosum
13 – 27 Mar
5 Jun
4-6 wk
24 Apr
3 Jul
1 wk after
24 Apr
23 Jun
1 wk after
Ornamental Kale
Brassica oleracea (Ornamental-gruppen)
1 – 15 Mar
23 Jun
5-7 wk
19 Apr
28 Jul
0 wk
12 Apr
18 Jul
1 wk before
Pumpkin
Cucurbita pepo
27 Apr – 4 May
27 Jun
3-4 wk
25 May
18 Jul
5 wk after
Beetroot
Beta vulgaris (Conditiva-gruppen)
28 Mar – 4 Apr
15 Jun
3-4 wk
25 Apr
6 Jul
1 wk after
29 Apr
26 Jun
1 wk after
Red Cabbage
Brassica oleracea (Red Cabbage-gruppen)
8 – 22 Mar
25 Jun
4-6 wk
19 Apr
23 Jul
0 wk
Lettuce
Lactuca sativa
22 – 29 Mar
12 Jul
3-4 wk
19 Apr
2 Aug
0 wk
12 Apr
23 Jul
1 wk before
Savoy Cabbage
Brassica oleracea (Savoy Cabbage-gruppen)
8 – 22 Mar
25 Jun
4-6 wk
19 Apr
23 Jul
0 wk
Shallot (bulbs)
Allium cepa (Aggregatum-gruppen)
10 – 24 Mar
4 Jun
2-4 wk
7 Apr
18 Jun
2 wk before
7 Apr
8 Jun
2 wk before
Shallot (sets)
Allium cepa (Aggregatum-gruppen)
12 Apr
18 Jun
1 wk before
12 Apr
8 Jun
1 wk before
Spinach
Spinacia oleracea
22 – 29 Mar
27 Jul
3-4 wk
19 Apr
17 Aug
0 wk
1 Apr
7 Aug
3 wk before
Sweet potato
Ipomoea batatas
16 – 30 May
4-6 wk
27 Jun
10 wk after
Garden tomato
Solanum lycopersicum
13 – 27 Mar
12 May
6-8 wk
8 May
23 Jun
3 wk after
Tomatillo
Physalis ixocarpa
Common Bean
Phaseolus vulgaris
10 – 24 Apr
29 Jun
2-4 wk
8 May
13 Jul
3 wk after
25 May
3 Jul
5 wk after
White Cabbage
Brassica oleracea (White Cabbage-gruppen)
8 – 22 Mar
25 Jun
4-6 wk
19 Apr
23 Jul
0 wk
Garden pea
Pisum sativum
22 – 29 Mar
27 Jun
3-4 wk
19 Apr
18 Jul
0 wk
12 Apr
8 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
5 Jun
4-6 wk
25 May
3 Jul
5 wk after
Lemon balm
Melissa officinalis
8 – 22 Feb
23 May
8-10 wk
19 Apr
18 Jul
0 wk
10 May
8 Jul
3 wk after
Dill
Anethum graveolens
12 Apr
28 Jul
1 wk before
Wild chives
Allium schoenoprasum
22 Feb – 8 Mar
6 Jun
6-8 wk
19 Apr
18 Jul
0 wk
12 Apr
8 Jul
1 wk before
Spearmint
Mentha spicata
25 Jan – 22 Feb
23 May
8-12 wk
19 Apr
18 Jul
0 wk
10 May
8 Jul
3 wk after
Coriander
Coriandrum sativum
19 Apr
17 Aug
0 wk
29 Apr
7 Aug
1 wk after
Garden sage
Salvia officinalis
14 – 28 Feb
8 May
8-10 wk
25 Apr
3 Jul
1 wk after
Common thyme
Thymus vulgaris
8 – 22 Feb
13 May
8-10 wk
19 Apr
8 Jul
0 wk
Oregano
Origanum vulgare
22 Feb – 8 Mar
27 May
6-8 wk
19 Apr
8 Jul
0 wk
10 May
28 Jun
3 wk after
Parsley
Petroselinum crispum
22 Feb – 8 Mar
27 May
6-8 wk
19 Apr
8 Jul
0 wk
12 Apr
28 Jun
1 wk before
Rosemary
Salvia rosmarinus
17 Jan – 14 Feb
9 Apr
10-14 wk
25 Apr
18 Jun
1 wk after

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
12 Jun
3-4 wk
25 May
3 Jul
5 wk after
Cornflower
Centaurea cyanus
19 Apr
18 Jul
0 wk
12 Apr
8 Jul
1 wk before
Statice
Limonium sinuatum
27 Feb – 13 Mar
9 May
8-10 wk
8 May
4 Jul
3 wk after
Sweet William
Dianthus barbatus
22 Feb – 8 Mar
6-8 wk
19 Apr
0 wk
24 Apr
1 wk after
Snow-on-the-mountain
Euphorbia marginata
13 – 27 Mar
23 May
6-8 wk
8 May
4 Jul
3 wk after
27 Jun
10 wk after
Pinnate dahlia
Dahlia × pinnata
8 – 22 Mar
27 May
6-8 wk
3 May
8 Jul
2 wk after
Pinnate dahlia (tubers)
Dahlia × pinnata
15 Mar – 12 Apr
10 Jun
4-8 wk
10 May
8 Jul
3 wk after
10 May
28 Jun
3 wk after
Foxglove
Digitalis purpurea
8 – 22 Feb
8-10 wk
19 Apr
0 wk
29 Apr
1 wk after
Busy lizzie
Impatiens walleriana
2 – 30 Mar
3 Jul
8-12 wk
25 May
28 Aug
5 wk after
Creeping zinnia
Sanvitalia procumbens
13 – 27 Mar
2 Jun
6-8 wk
8 May
14 Jul
3 wk after
Hyacinth bean
Dolichos lablab
Fleece
13 – 27 Apr
6 May
4-6 wk
25 May
3 Jun
5 wk after
Chinese lantern
Physalis alkekengi
14 – 28 Feb
23 Apr
8-10 wk
25 Apr
18 Jun
1 wk after
Love in a mist
Nigella damascena
19 Apr
3 Jul
0 wk
12 Apr
23 Jun
1 wk before
Strawflower
Xerochrysum bracteatum
13 – 27 Mar
13 May
6-8 wk
8 May
24 Jun
3 wk after
27 Jun
10 wk after
Purple-top vervain
Verbena bonariensis
31 Jan – 28 Feb
23 Apr
8-12 wk
25 Apr
18 Jun
1 wk after
Cardoon
Cynara cardunculus
13 Feb – 13 Mar
24 Mar
8-12 wk
8 May
19 May
3 wk after
Regal-foxtail
Ptilotus nobilis
2 – 30 Mar
28 Apr
8-12 wk
25 May
23 Jun
5 wk after
Globe amaranth
Gomphrena globosa
30 Mar – 13 Apr
12 May
6-8 wk
25 May
23 Jun
5 wk after
Corn poppy
Papaver rhoeas
19 Apr
18 Jul
0 wk
12 Apr
8 Jul
1 wk before
Snapdragon
Antirrhinum majus
25 Jan – 22 Feb
13 May
8-12 wk
19 Apr
8 Jul
0 wk
24 Apr
28 Jun
1 wk after
Flossflower
Ageratum houstonianum
16 – 30 Mar
19 May
8-10 wk
25 May
14 Jul
5 wk after
Sweet pea
Lathyrus odoratus
22 Feb – 15 Mar
3 Jun
5-8 wk
19 Apr
8 Jul
0 wk
Stock
Matthiola incana
22 Feb – 8 Mar
6 Jun
6-8 wk
19 Apr
18 Jul
0 wk
29 Apr
8 Jul
1 wk after
Wormwood
Artemisia absinthium
22 Feb – 8 Mar
7 May
6-8 wk
19 Apr
18 Jun
0 wk
29 Apr
8 Jun
1 wk after
Mexican sunflower
Tithonia rotundifolia
13 – 27 Apr
21 May
4-6 wk
25 May
18 Jun
5 wk after
Garden pansy
Viola × wittrockiana
8 – 22 Feb
23 May
8-10 wk
19 Apr
18 Jul
0 wk
24 Apr
8 Jul
1 wk after
Petunia
Petunia
13 Feb – 13 Mar
9 May
8-12 wk
8 May
4 Jul
3 wk after
Sweet Scabious
Scabiosa atropurpurea
28 Feb – 14 Mar
7 May
6-8 wk
25 Apr
18 Jun
1 wk after
25 May
8 Jun
5 wk after
Common zinnia
Zinnia elegans
27 Mar – 10 Apr
15 Jun
4-6 wk
8 May
13 Jul
3 wk after
Common morning glory
Ipomoea purpurea
20 Apr – 4 May
12 Jun
3-5 wk
25 May
3 Jul
5 wk after
Garden cosmos
Cosmos bipinnatus
27 Mar – 10 Apr
10 Jun
4-6 wk
8 May
8 Jul
3 wk after
25 May
28 Jun
5 wk after
Scarlet milkweed
Asclepias curassavica
14 Mar – 11 Apr
28 May
8-12 wk
6 Jun
23 Jul
7 wk after
Bee balm
Monarda didyma
25 Jan – 22 Feb
23 Apr
8-12 wk
19 Apr
18 Jun
0 wk
10 May
8 Jun
3 wk after
Yarrow
Achillea millefolium
22 Feb – 8 Mar
7 Apr
6-8 wk
19 Apr
19 May
0 wk
29 Apr
9 May
1 wk after
Safflower
Carthamus tinctorius
19 Apr
18 Jun
0 wk
12 Apr
8 Jun
1 wk before
Iceland poppy
Papaver nudicaule
Season too short
22 Feb – 8 Mar
27 May
6-8 wk
19 Apr
8 Jul
0 wk
11 Mar
28 Jun
6 wk before
Bishop's flower
Ammi majus
8 – 22 Mar
10 Jun
4-6 wk
19 Apr
8 Jul
0 wk
29 Apr
28 Jun
1 wk after
Drumsticks
Pycnosorus globosus
2 – 16 Mar
4 Apr
10-12 wk
25 May
13 Jun
5 wk after
Sunflower
Helianthus annuus
10 – 17 Apr
17 Jun
3-4 wk
8 May
8 Jul
3 wk after
10 May
28 Jun
3 wk after
China aster
Callistephus chinensis
13 – 27 Mar
6 Jun
6-8 wk
8 May
18 Jul
3 wk after
25 May
8 Jul
5 wk after
Annual phlox
Phlox drummondii
5 – 19 Mar
2 Jun
6-8 wk
30 Apr
14 Jul
2 wk after
25 May
4 Jul
5 wk after
Hollyhock
Alcea rosea
22 Feb – 8 Mar
6-8 wk
19 Apr
0 wk
29 Apr
1 wk after
Alpine delphinium
Delphinium elatum
25 Jan – 22 Feb
23 Apr
8-12 wk
19 Apr
18 Jun
0 wk
10 May
8 Jun
3 wk after
African marigold
Tagetes erecta
13 – 27 Mar
2 Jun
6-8 wk
8 May
14 Jul
3 wk after
Black-eyed Susan
Rudbeckia hirta
28 Feb – 14 Mar
27 May
6-8 wk
25 Apr
8 Jul
1 wk after
25 May
28 Jun
5 wk after
Wood sage
Salvia nemorosa
8 – 22 Feb
13 Apr
8-10 wk
19 Apr
8 Jun
0 wk
10 May
29 May
3 wk after
Black-eyed susan vine
Thunbergia alata
16 Mar – 13 Apr
22 May
6-10 wk
25 May
3 Jul
5 wk after
California goldenpoppy
Eschscholzia californica
19 Apr
18 Jul
0 wk
12 Apr
8 Jul
1 wk before
Painted tongue
Salpiglossis sinuata
27 Feb – 13 Mar
13 May
8-10 wk
8 May
8 Jul
3 wk after
Water forget-me-not
Myosotis scorpioides
22 Feb – 8 Mar
7 May
6-8 wk
19 Apr
18 Jun
0 wk
29 Apr
8 Jun
1 wk after