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Method
Rel. frost
Last spring frost (0°C) 25 Apr Frost 3 of 4 years · 20 years of data
Frost-free season 168 days 25 Apr – 10 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)
5 – 19 Apr
18 Jun
5-7 wk
24 May
23 Jul
4 wk after
18 Apr
13 Jul
1 wk before
Broccoli
Brassica oleracea (Italica-gruppen)
28 Mar – 11 Apr
30 Jun
4-6 wk
9 May
28 Jul
2 wk after
18 Apr
18 Jul
1 wk before
Chili pepper
Capsicum annuum
Fleece
19 Mar – 16 Apr
13 Apr
8-12 wk
11 Jun
7 wk after
Curly Kale
Brassica oleracea (Curly Kale-gruppen)
10 – 24 Feb
13 Jun
5-7 wk
31 Mar
18 Jul
4 wk before
13 Apr
8 Jul
2 wk before
Garden cucumber
Cucumis sativus
22 – 29 May
7 Jun
3-4 wk
19 Jun
28 Jun
8 wk after
Florence Fennel
Foeniculum vulgare
15 – 22 May
9 Jun
4-5 wk
19 Jun
7 Jul
8 wk after
31 May
27 Jun
5 wk after
Butter bean
Phaseolus lunatus
Greenhouse
24 – 31 May
26 May
3-4 wk
21 Jun
8 wk after
Onion
Allium cepa (Cepa-gruppen)
31 Jan – 28 Feb
3 Apr
8-12 wk
25 Apr
29 May
Vid frost
5 May
19 May
1 wk after
Onion (sets)
Allium cepa (Cepa-gruppen)
18 Apr
18 Jun
1 wk before
18 Apr
8 Jun
1 wk before
Maize
Zea mays
14 – 21 May
28 May
3-4 wk
11 Jun
18 Jun
7 wk after
Swiss Chard
Beta vulgaris (Flavescens-gruppen)
26 Apr – 3 May
7 Jul
3-4 wk
24 May
28 Jul
4 wk after
5 May
18 Jul
1 wk after
Carrot
Daucus carota subsp. sativus var. sativus
13 Apr
28 Jun
2 wk before
Palm Kale
Brassica oleracea (Palm Kale-gruppen)
10 – 24 Feb
13 Jun
5-7 wk
31 Mar
18 Jul
4 wk before
13 Apr
8 Jul
2 wk before
Potato
Solanum tuberosum
19 Mar – 2 Apr
10 Jun
4-6 wk
30 Apr
8 Jul
1 wk after
30 Apr
28 Jun
1 wk after
Ornamental Kale
Brassica oleracea (Ornamental-gruppen)
10 – 24 Feb
23 Jun
5-7 wk
31 Mar
28 Jul
4 wk before
18 Apr
18 Jul
1 wk before
Pumpkin
Cucurbita pepo
22 – 29 May
21 Jun
3-4 wk
19 Jun
12 Jul
8 wk after
Beetroot
Beta vulgaris (Conditiva-gruppen)
26 Apr – 3 May
27 Jun
3-4 wk
24 May
18 Jul
4 wk after
5 May
8 Jul
1 wk after
Red Cabbage
Brassica oleracea (Red Cabbage-gruppen)
28 Mar – 11 Apr
25 Jun
4-6 wk
9 May
23 Jul
2 wk after
Lettuce
Lactuca sativa
21 – 28 Mar
12 Jul
3-4 wk
18 Apr
2 Aug
1 wk before
18 Apr
23 Jul
1 wk before
Savoy Cabbage
Brassica oleracea (Savoy Cabbage-gruppen)
7 – 21 Mar
25 Jun
4-6 wk
18 Apr
23 Jul
1 wk before
Shallot (bulbs)
Allium cepa (Aggregatum-gruppen)
16 – 30 Mar
4 Jun
2-4 wk
13 Apr
18 Jun
2 wk before
13 Apr
8 Jun
2 wk before
Shallot (sets)
Allium cepa (Aggregatum-gruppen)
18 Apr
18 Jun
1 wk before
18 Apr
8 Jun
1 wk before
Spinach
Spinacia oleracea
13 – 20 Mar
27 Jul
3-4 wk
10 Apr
17 Aug
2 wk before
7 Apr
7 Aug
3 wk before
Sweet potato
Ipomoea batatas
22 May – 5 Jun
4-6 wk
3 Jul
10 wk after
Garden tomato
Solanum lycopersicum
16 – 30 Apr
7 May
6-8 wk
11 Jun
18 Jun
7 wk after
Tomatillo
Physalis ixocarpa
Common Bean
Phaseolus vulgaris
14 – 28 May
23 Jun
2-4 wk
11 Jun
7 Jul
7 wk after
31 May
27 Jun
5 wk after
White Cabbage
Brassica oleracea (White Cabbage-gruppen)
28 Mar – 11 Apr
25 Jun
4-6 wk
9 May
23 Jul
2 wk after
Garden pea
Pisum sativum
13 – 20 Mar
27 Jun
3-4 wk
10 Apr
18 Jul
2 wk before
18 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
8 – 22 May
30 May
4-6 wk
19 Jun
27 Jun
8 wk after
Lemon balm
Melissa officinalis
14 – 28 Feb
23 May
8-10 wk
25 Apr
18 Jul
Vid frost
16 May
8 Jul
3 wk after
Dill
Anethum graveolens
18 Apr
28 Jul
1 wk before
Wild chives
Allium schoenoprasum
3 – 17 Feb
6 Jun
6-8 wk
31 Mar
18 Jul
4 wk before
18 Apr
8 Jul
1 wk before
Spearmint
Mentha spicata
16 Jan – 13 Feb
23 May
8-12 wk
10 Apr
18 Jul
2 wk before
16 May
8 Jul
3 wk after
Coriander
Coriandrum sativum
5 May
7 Aug
1 wk after
Garden sage
Salvia officinalis
15 – 29 Mar
8 May
8-10 wk
24 May
3 Jul
4 wk after
Common thyme
Thymus vulgaris
28 Feb – 14 Mar
13 May
8-10 wk
9 May
8 Jul
2 wk after
Oregano
Origanum vulgare
6 – 20 Mar
27 May
6-8 wk
1 May
8 Jul
1 wk after
16 May
28 Jun
3 wk after
Parsley
Petroselinum crispum
13 – 27 Feb
27 May
6-8 wk
10 Apr
8 Jul
2 wk before
18 Apr
28 Jun
1 wk before
Rosemary
Salvia rosmarinus
15 Feb – 15 Mar
9 Apr
10-14 wk
24 May
18 Jun
4 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
22 – 29 May
6 Jun
3-4 wk
19 Jun
27 Jun
8 wk after
Cornflower
Centaurea cyanus
10 Apr
18 Jul
2 wk before
18 Apr
8 Jul
1 wk before
Statice
Limonium sinuatum
2 – 16 Apr
11 May
8-10 wk
11 Jun
6 Jul
7 wk after
Sweet William
Dianthus barbatus
13 – 27 Feb
6-8 wk
10 Apr
2 wk before
30 Apr
1 wk after
Snow-on-the-mountain
Euphorbia marginata
16 – 30 Apr
25 May
6-8 wk
11 Jun
6 Jul
7 wk after
3 Jul
10 wk after
Pinnate dahlia
Dahlia × pinnata
10 – 24 Apr
26 May
6-8 wk
5 Jun
7 Jul
6 wk after
Pinnate dahlia (tubers)
Dahlia × pinnata
21 Mar – 18 Apr
9 Jun
4-8 wk
16 May
7 Jul
3 wk after
16 May
27 Jun
3 wk after
Foxglove
Digitalis purpurea
30 Jan – 13 Feb
8-10 wk
10 Apr
2 wk before
5 May
1 wk after
Busy lizzie
Impatiens walleriana
27 Mar – 24 Apr
26 Jun
8-12 wk
19 Jun
21 Aug
8 wk after
Creeping zinnia
Sanvitalia procumbens
16 – 30 Apr
4 Jun
6-8 wk
11 Jun
16 Jul
7 wk after
Hyacinth bean
Dolichos lablab
Greenhouse
30 Apr – 14 May
9 May
4-6 wk
11 Jun
7 wk after
Chinese lantern
Physalis alkekengi
15 – 29 Mar
23 Apr
8-10 wk
24 May
18 Jun
4 wk after
Love in a mist
Nigella damascena
18 Apr
23 Jun
1 wk before
Strawflower
Xerochrysum bracteatum
16 – 30 Apr
15 May
6-8 wk
11 Jun
26 Jun
7 wk after
3 Jul
10 wk after
Purple-top vervain
Verbena bonariensis
1 – 29 Mar
23 Apr
8-12 wk
24 May
18 Jun
4 wk after
Cardoon
Cynara cardunculus
19 Mar – 16 Apr
24 Mar
8-12 wk
11 Jun
7 wk after
Regal-foxtail
Ptilotus nobilis
27 Mar – 24 Apr
22 Apr
8-12 wk
19 Jun
8 wk after
Globe amaranth
Gomphrena globosa
24 Apr – 8 May
6 May
6-8 wk
19 Jun
8 wk after
Corn poppy
Papaver rhoeas
18 Apr
8 Jul
1 wk before
Snapdragon
Antirrhinum majus
24 Jan – 21 Feb
13 May
8-12 wk
18 Apr
8 Jul
1 wk before
30 Apr
28 Jun
1 wk after
Flossflower
Ageratum houstonianum
10 – 24 Apr
21 May
8-10 wk
19 Jun
16 Jul
8 wk after
Sweet pea
Lathyrus odoratus
13 Feb – 6 Mar
3 Jun
5-8 wk
10 Apr
8 Jul
2 wk before
Stock
Matthiola incana
21 Feb – 7 Mar
6 Jun
6-8 wk
18 Apr
18 Jul
1 wk before
5 May
8 Jul
1 wk after
Wormwood
Artemisia absinthium
13 – 27 Feb
7 May
6-8 wk
10 Apr
18 Jun
2 wk before
5 May
8 Jun
1 wk after
Mexican sunflower
Tithonia rotundifolia
8 – 22 May
15 May
4-6 wk
19 Jun
8 wk after
Garden pansy
Viola × wittrockiana
20 Jan – 3 Feb
23 May
8-10 wk
31 Mar
18 Jul
4 wk before
30 Apr
8 Jul
1 wk after
Petunia
Petunia
19 Mar – 16 Apr
11 May
8-12 wk
11 Jun
6 Jul
7 wk after
Sweet Scabious
Scabiosa atropurpurea
29 Mar – 12 Apr
7 May
6-8 wk
24 May
18 Jun
4 wk after
31 May
8 Jun
5 wk after
Common zinnia
Zinnia elegans
30 Apr – 14 May
8 Jun
4-6 wk
11 Jun
6 Jul
7 wk after
Common morning glory
Ipomoea purpurea
15 – 29 May
6 Jun
3-5 wk
19 Jun
27 Jun
8 wk after
Garden cosmos
Cosmos bipinnatus
30 Apr – 14 May
9 Jun
4-6 wk
11 Jun
7 Jul
7 wk after
31 May
27 Jun
5 wk after
Scarlet milkweed
Asclepias curassavica
31 Mar – 28 Apr
22 May
8-12 wk
23 Jun
17 Jul
8 wk after
Bee balm
Monarda didyma
31 Jan – 28 Feb
23 Apr
8-12 wk
25 Apr
18 Jun
Vid frost
16 May
8 Jun
3 wk after
Yarrow
Achillea millefolium
13 – 27 Feb
7 Apr
6-8 wk
10 Apr
19 May
2 wk before
5 May
9 May
1 wk after
Safflower
Carthamus tinctorius
10 Apr
18 Jun
2 wk before
18 Apr
8 Jun
1 wk before
Iceland poppy
Papaver nudicaule
3 – 17 Feb
27 May
6-8 wk
31 Mar
8 Jul
4 wk before
13 Apr
28 Jun
2 wk before
Bishop's flower
Ammi majus
24 Mar – 7 Apr
10 Jun
4-6 wk
5 May
8 Jul
1 wk after
5 May
28 Jun
1 wk after
Drumsticks
Pycnosorus globosus
27 Mar – 10 Apr
28 Mar
10-12 wk
19 Jun
8 wk after
Sunflower
Helianthus annuus
14 – 21 May
17 Jun
3-4 wk
11 Jun
8 Jul
7 wk after
16 May
28 Jun
3 wk after
China aster
Callistephus chinensis
16 – 30 Apr
6 Jun
6-8 wk
11 Jun
18 Jul
7 wk after
31 May
8 Jul
5 wk after
Annual phlox
Phlox drummondii
4 – 18 Apr
4 Jun
6-8 wk
30 May
16 Jul
5 wk after
31 May
6 Jul
5 wk after
Hollyhock
Alcea rosea
13 – 27 Feb
6-8 wk
10 Apr
2 wk before
5 May
1 wk after
Alpine delphinium
Delphinium elatum
14 Feb – 14 Mar
23 Apr
8-12 wk
9 May
18 Jun
2 wk after
16 May
8 Jun
3 wk after
African marigold
Tagetes erecta
16 – 30 Apr
4 Jun
6-8 wk
11 Jun
16 Jul
7 wk after
Black-eyed Susan
Rudbeckia hirta
29 Mar – 12 Apr
27 May
6-8 wk
24 May
8 Jul
4 wk after
31 May
28 Jun
5 wk after
Wood sage
Salvia nemorosa
20 Feb – 6 Mar
13 Apr
8-10 wk
1 May
8 Jun
1 wk after
16 May
29 May
3 wk after
Black-eyed susan vine
Thunbergia alata
10 Apr – 8 May
16 May
6-10 wk
19 Jun
27 Jun
8 wk after
California goldenpoppy
Eschscholzia californica
18 Apr
8 Jul
1 wk before
Painted tongue
Salpiglossis sinuata
2 – 16 Apr
12 May
8-10 wk
11 Jun
7 Jul
7 wk after
Water forget-me-not
Myosotis scorpioides
13 – 27 Feb
7 May
6-8 wk
10 Apr
18 Jun
2 wk before
5 May
8 Jun
1 wk after