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Rel. frost
Last spring frost (0°C) 20 Mar Frost 9 of 10 years · 20 years of data
Frost-free season 220 days 20 Mar – 26 Oct
Probability that frost is over

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