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Method
Rel. frost
Last spring frost (0°C) 27 Apr Normal year · 20 years of data
Frost-free season 183 days 27 Apr – 27 Oct
Probability that frost is over

50% = 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)
10 – 24 Apr
21 Jun
5-7 wk
29 May
26 Jul
5 wk after
21 Apr
16 Jul
1 wk before
Broccoli
Brassica oleracea (Italica-gruppen)
5 – 19 Apr
3 Jul
4-6 wk
17 May
31 Jul
3 wk after
21 Apr
21 Jul
1 wk before
Chili pepper
Capsicum annuum
Fleece
30 Mar – 27 Apr
27 Apr
8-12 wk
22 Jun
22 Jun
8 wk after
Curly Kale
Brassica oleracea (Curly Kale-gruppen)
7 – 21 Feb
16 Jun
5-7 wk
28 Mar
21 Jul
4 wk before
14 Apr
11 Jul
2 wk before
Garden cucumber
Cucumis sativus
5 – 12 Jun
21 Jun
3-4 wk
3 Jul
12 Jul
10 wk after
Florence Fennel
Foeniculum vulgare
29 May – 5 Jun
13 Jun
4-5 wk
3 Jul
11 Jul
10 wk after
7 Jun
1 Jul
6 wk after
Butter bean
Phaseolus lunatus
Fleece
13 – 20 Jun
3-4 wk
11 Jul
11 wk after
Onion
Allium cepa (Cepa-gruppen)
2 Feb – 2 Mar
6 Apr
8-12 wk
27 Apr
1 Jun
Vid frost
10 May
22 May
2 wk after
Onion (sets)
Allium cepa (Cepa-gruppen)
21 Apr
21 Jun
1 wk before
21 Apr
11 Jun
1 wk before
Maize
Zea mays
25 May – 1 Jun
11 Jun
3-4 wk
22 Jun
2 Jul
8 wk after
Swiss Chard
Beta vulgaris (Flavescens-gruppen)
1 – 8 May
10 Jul
3-4 wk
29 May
31 Jul
5 wk after
10 May
21 Jul
2 wk after
Carrot
Daucus carota subsp. sativus var. sativus
14 Apr
1 Jul
2 wk before
Palm Kale
Brassica oleracea (Palm Kale-gruppen)
7 – 21 Feb
16 Jun
5-7 wk
28 Mar
21 Jul
4 wk before
14 Apr
11 Jul
2 wk before
Potato
Solanum tuberosum
21 Mar – 4 Apr
13 Jun
4-6 wk
2 May
11 Jul
1 wk after
2 May
1 Jul
1 wk after
Ornamental Kale
Brassica oleracea (Ornamental-gruppen)
7 – 21 Feb
26 Jun
5-7 wk
28 Mar
31 Jul
4 wk before
21 Apr
21 Jul
1 wk before
Pumpkin
Cucurbita pepo
5 – 12 Jun
8 Jul
3-4 wk
3 Jul
29 Jul
10 wk after
Beetroot
Beta vulgaris (Conditiva-gruppen)
1 – 8 May
1 Jul
3-4 wk
29 May
22 Jul
5 wk after
10 May
12 Jul
2 wk after
Red Cabbage
Brassica oleracea (Red Cabbage-gruppen)
5 – 19 Apr
28 Jun
4-6 wk
17 May
26 Jul
3 wk after
Lettuce
Lactuca sativa
21 – 28 Mar
15 Jul
3-4 wk
18 Apr
5 Aug
1 wk before
21 Apr
26 Jul
1 wk before
Savoy Cabbage
Brassica oleracea (Savoy Cabbage-gruppen)
7 – 21 Mar
28 Jun
4-6 wk
18 Apr
26 Jul
1 wk before
Shallot (bulbs)
Allium cepa (Aggregatum-gruppen)
17 – 31 Mar
7 Jun
2-4 wk
14 Apr
21 Jun
2 wk before
14 Apr
11 Jun
2 wk before
Shallot (sets)
Allium cepa (Aggregatum-gruppen)
21 Apr
21 Jun
1 wk before
21 Apr
11 Jun
1 wk before
Spinach
Spinacia oleracea
10 – 17 Mar
30 Jul
3-4 wk
7 Apr
20 Aug
3 wk before
7 Apr
10 Aug
3 wk before
Sweet potato
Ipomoea batatas
29 May – 12 Jun
4-6 wk
10 Jul
11 wk after
Garden tomato
Solanum lycopersicum
27 Apr – 11 May
21 May
6-8 wk
22 Jun
2 Jul
8 wk after
Tomatillo
Physalis ixocarpa
Common Bean
Phaseolus vulgaris
25 May – 8 Jun
10 Jul
2-4 wk
22 Jun
24 Jul
8 wk after
7 Jun
14 Jul
6 wk after
White Cabbage
Brassica oleracea (White Cabbage-gruppen)
5 – 19 Apr
28 Jun
4-6 wk
17 May
26 Jul
3 wk after
Garden pea
Pisum sativum
10 – 17 Mar
30 Jun
3-4 wk
7 Apr
21 Jul
3 wk before
21 Apr
11 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
22 May – 5 Jun
16 Jun
4-6 wk
3 Jul
14 Jul
10 wk after
Lemon balm
Melissa officinalis
16 Feb – 2 Mar
26 May
8-10 wk
27 Apr
21 Jul
Vid frost
23 May
11 Jul
4 wk after
Dill
Anethum graveolens
21 Apr
31 Jul
1 wk before
Wild chives
Allium schoenoprasum
31 Jan – 14 Feb
9 Jun
6-8 wk
28 Mar
21 Jul
4 wk before
21 Apr
11 Jul
1 wk before
Spearmint
Mentha spicata
13 Jan – 10 Feb
26 May
8-12 wk
7 Apr
21 Jul
3 wk before
23 May
11 Jul
4 wk after
Coriander
Coriandrum sativum
10 May
10 Aug
2 wk after
Garden sage
Salvia officinalis
20 Mar – 3 Apr
11 May
8-10 wk
29 May
6 Jul
5 wk after
Common thyme
Thymus vulgaris
8 – 22 Mar
16 May
8-10 wk
17 May
11 Jul
3 wk after
Oregano
Origanum vulgare
11 – 25 Mar
30 May
6-8 wk
6 May
11 Jul
1 wk after
23 May
1 Jul
4 wk after
Parsley
Petroselinum crispum
10 – 24 Feb
30 May
6-8 wk
7 Apr
11 Jul
3 wk before
21 Apr
1 Jul
1 wk before
Rosemary
Salvia rosmarinus
20 Feb – 20 Mar
12 Apr
10-14 wk
29 May
21 Jun
5 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
5 – 12 Jun
23 Jun
3-4 wk
3 Jul
14 Jul
10 wk after
Cornflower
Centaurea cyanus
7 Apr
21 Jul
3 wk before
21 Apr
11 Jul
1 wk before
Statice
Limonium sinuatum
13 – 27 Apr
16 May
8-10 wk
22 Jun
11 Jul
8 wk after
Sweet William
Dianthus barbatus
10 – 24 Feb
6-8 wk
7 Apr
3 wk before
2 May
1 wk after
Snow-on-the-mountain
Euphorbia marginata
27 Apr – 11 May
30 May
6-8 wk
22 Jun
11 Jul
8 wk after
10 Jul
11 wk after
Pinnate dahlia
Dahlia × pinnata
20 Apr – 4 May
30 May
6-8 wk
15 Jun
11 Jul
7 wk after
Pinnate dahlia (tubers)
Dahlia × pinnata
28 Mar – 25 Apr
13 Jun
4-8 wk
23 May
11 Jul
4 wk after
23 May
1 Jul
4 wk after
Foxglove
Digitalis purpurea
27 Jan – 10 Feb
8-10 wk
7 Apr
3 wk before
10 May
2 wk after
Busy lizzie
Impatiens walleriana
10 Apr – 8 May
11 Jul
8-12 wk
3 Jul
5 Sep
10 wk after
Creeping zinnia
Sanvitalia procumbens
27 Apr – 11 May
9 Jun
6-8 wk
22 Jun
21 Jul
8 wk after
Hyacinth bean
Dolichos lablab
Fleece
22 May – 5 Jun
4-6 wk
3 Jul
10 wk after
Chinese lantern
Physalis alkekengi
20 Mar – 3 Apr
26 Apr
8-10 wk
29 May
21 Jun
5 wk after
Love in a mist
Nigella damascena
21 Apr
26 Jun
1 wk before
Strawflower
Xerochrysum bracteatum
27 Apr – 11 May
20 May
6-8 wk
22 Jun
1 Jul
8 wk after
10 Jul
11 wk after
Purple-top vervain
Verbena bonariensis
6 Mar – 3 Apr
26 Apr
8-12 wk
29 May
21 Jun
5 wk after
Cardoon
Cynara cardunculus
30 Mar – 27 Apr
8-12 wk
22 Jun
8 wk after
Regal-foxtail
Ptilotus nobilis
10 Apr – 8 May
9 May
8-12 wk
3 Jul
4 Jul
10 wk after
Globe amaranth
Gomphrena globosa
8 – 22 May
23 May
6-8 wk
3 Jul
4 Jul
10 wk after
Corn poppy
Papaver rhoeas
21 Apr
11 Jul
1 wk before
Snapdragon
Antirrhinum majus
24 Jan – 21 Feb
16 May
8-12 wk
18 Apr
11 Jul
1 wk before
2 May
1 Jul
1 wk after
Flossflower
Ageratum houstonianum
24 Apr – 8 May
26 May
8-10 wk
3 Jul
21 Jul
10 wk after
Sweet pea
Lathyrus odoratus
10 Feb – 3 Mar
6 Jun
5-8 wk
7 Apr
11 Jul
3 wk before
Stock
Matthiola incana
21 Feb – 7 Mar
9 Jun
6-8 wk
18 Apr
21 Jul
1 wk before
10 May
11 Jul
2 wk after
Wormwood
Artemisia absinthium
10 – 24 Feb
10 May
6-8 wk
7 Apr
21 Jun
3 wk before
10 May
11 Jun
2 wk after
Mexican sunflower
Tithonia rotundifolia
22 May – 5 Jun
1 Jun
4-6 wk
3 Jul
10 wk after
Garden pansy
Viola × wittrockiana
17 – 31 Jan
26 May
8-10 wk
28 Mar
21 Jul
4 wk before
2 May
11 Jul
1 wk after
Petunia
Petunia
30 Mar – 27 Apr
16 May
8-12 wk
22 Jun
11 Jul
8 wk after
Sweet Scabious
Scabiosa atropurpurea
3 – 17 Apr
10 May
6-8 wk
29 May
21 Jun
5 wk after
7 Jun
11 Jun
6 wk after
Common zinnia
Zinnia elegans
11 – 25 May
23 Jun
4-6 wk
22 Jun
21 Jul
8 wk after
Common morning glory
Ipomoea purpurea
29 May – 12 Jun
23 Jun
3-5 wk
3 Jul
14 Jul
10 wk after
Garden cosmos
Cosmos bipinnatus
11 – 25 May
13 Jun
4-6 wk
22 Jun
11 Jul
8 wk after
7 Jun
1 Jul
6 wk after
Scarlet milkweed
Asclepias curassavica
17 Apr – 15 May
8 Jun
8-12 wk
10 Jul
3 Aug
11 wk after
Bee balm
Monarda didyma
2 Feb – 2 Mar
26 Apr
8-12 wk
27 Apr
21 Jun
Vid frost
23 May
11 Jun
4 wk after
Yarrow
Achillea millefolium
10 – 24 Feb
10 Apr
6-8 wk
7 Apr
22 May
3 wk before
10 May
12 May
2 wk after
Safflower
Carthamus tinctorius
7 Apr
21 Jun
3 wk before
21 Apr
11 Jun
1 wk before
Iceland poppy
Papaver nudicaule
31 Jan – 14 Feb
30 May
6-8 wk
28 Mar
11 Jul
4 wk before
14 Apr
1 Jul
2 wk before
Bishop's flower
Ammi majus
31 Mar – 14 Apr
13 Jun
4-6 wk
12 May
11 Jul
2 wk after
10 May
1 Jul
2 wk after
Drumsticks
Pycnosorus globosus
10 – 24 Apr
12 Apr
10-12 wk
3 Jul
10 wk after
Sunflower
Helianthus annuus
25 May – 1 Jun
20 Jun
3-4 wk
22 Jun
11 Jul
8 wk after
23 May
1 Jul
4 wk after
China aster
Callistephus chinensis
27 Apr – 11 May
9 Jun
6-8 wk
22 Jun
21 Jul
8 wk after
7 Jun
11 Jul
6 wk after
Annual phlox
Phlox drummondii
12 – 26 Apr
9 Jun
6-8 wk
7 Jun
21 Jul
6 wk after
7 Jun
11 Jul
6 wk after
Hollyhock
Alcea rosea
10 – 24 Feb
6-8 wk
7 Apr
3 wk before
10 May
2 wk after
Alpine delphinium
Delphinium elatum
22 Feb – 22 Mar
26 Apr
8-12 wk
17 May
21 Jun
3 wk after
23 May
11 Jun
4 wk after
African marigold
Tagetes erecta
27 Apr – 11 May
9 Jun
6-8 wk
22 Jun
21 Jul
8 wk after
Black-eyed Susan
Rudbeckia hirta
3 – 17 Apr
30 May
6-8 wk
29 May
11 Jul
5 wk after
7 Jun
1 Jul
6 wk after
Wood sage
Salvia nemorosa
25 Feb – 11 Mar
16 Apr
8-10 wk
6 May
11 Jun
1 wk after
23 May
1 Jun
4 wk after
Black-eyed susan vine
Thunbergia alata
24 Apr – 22 May
2 Jun
6-10 wk
3 Jul
14 Jul
10 wk after
California goldenpoppy
Eschscholzia californica
21 Apr
11 Jul
1 wk before
Painted tongue
Salpiglossis sinuata
13 – 27 Apr
16 May
8-10 wk
22 Jun
11 Jul
8 wk after
Water forget-me-not
Myosotis scorpioides
10 – 24 Feb
10 May
6-8 wk
7 Apr
21 Jun
3 wk before
10 May
11 Jun
2 wk after