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Rel. frost
Last spring frost (0°C) 27 Mar Frost 3 of 4 years · 20 years of data
Frost-free season 230 days 27 Mar – 12 Nov
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)
6 – 20 Feb
22 Jun
5-7 wk
27 Mar
27 Jul
0 wk
21 Mar
17 Jul
1 wk before
Broccoli
Brassica oleracea (Italica-gruppen)
13 – 27 Feb
4 Jul
4-6 wk
27 Mar
1 Aug
0 wk
21 Mar
22 Jul
1 wk before
Chili pepper
Capsicum annuum
12 Feb – 12 Mar
16 Apr
8-12 wk
7 May
11 Jun
6 wk after
Curly Kale
Brassica oleracea (Curly Kale-gruppen)
6 – 20 Feb
17 Jun
5-7 wk
27 Mar
22 Jul
0 wk
14 Mar
12 Jul
2 wk before
Garden cucumber
Cucumis sativus
9 – 16 Apr
22 Jun
3-4 wk
7 May
13 Jul
6 wk after
Florence Fennel
Foeniculum vulgare
2 – 9 Apr
14 Jun
4-5 wk
7 May
12 Jul
6 wk after
7 May
2 Jul
6 wk after
Butter bean
Phaseolus lunatus
Fleece
5 – 12 May
4 Jun
3-4 wk
2 Jun
25 Jun
10 wk after
Onion
Allium cepa (Cepa-gruppen)
2 – 30 Jan
7 Apr
8-12 wk
27 Mar
2 Jun
0 wk
9 Apr
23 May
2 wk after
Onion (sets)
Allium cepa (Cepa-gruppen)
21 Mar
22 Jun
1 wk before
21 Mar
12 Jun
1 wk before
Maize
Zea mays
26 Mar – 2 Apr
12 Jun
3-4 wk
23 Apr
3 Jul
4 wk after
Swiss Chard
Beta vulgaris (Flavescens-gruppen)
27 Feb – 6 Mar
11 Jul
3-4 wk
27 Mar
1 Aug
0 wk
9 Apr
22 Jul
2 wk after
Carrot
Daucus carota subsp. sativus var. sativus
27 Mar
12 Jul
0 wk
14 Mar
2 Jul
2 wk before
Palm Kale
Brassica oleracea (Palm Kale-gruppen)
6 – 20 Feb
17 Jun
5-7 wk
27 Mar
22 Jul
0 wk
14 Mar
12 Jul
2 wk before
Potato
Solanum tuberosum
18 Feb – 4 Mar
11 Jun
4-6 wk
1 Apr
9 Jul
1 wk after
1 Apr
29 Jun
1 wk after
Ornamental Kale
Brassica oleracea (Ornamental-gruppen)
6 – 20 Feb
27 Jun
5-7 wk
27 Mar
1 Aug
0 wk
21 Mar
22 Jul
1 wk before
Pumpkin
Cucurbita pepo
9 – 16 Apr
9 Jul
3-4 wk
7 May
30 Jul
6 wk after
Beetroot
Beta vulgaris (Conditiva-gruppen)
27 Feb – 6 Mar
29 Jun
3-4 wk
27 Mar
20 Jul
0 wk
9 Apr
10 Jul
2 wk after
Red Cabbage
Brassica oleracea (Red Cabbage-gruppen)
13 – 27 Feb
29 Jun
4-6 wk
27 Mar
27 Jul
0 wk
Lettuce
Lactuca sativa
27 Feb – 6 Mar
16 Jul
3-4 wk
27 Mar
6 Aug
0 wk
21 Mar
27 Jul
1 wk before
Savoy Cabbage
Brassica oleracea (Savoy Cabbage-gruppen)
13 – 27 Feb
29 Jun
4-6 wk
27 Mar
27 Jul
0 wk
Shallot (bulbs)
Allium cepa (Aggregatum-gruppen)
14 – 28 Feb
8 Jun
2-4 wk
14 Mar
22 Jun
2 wk before
14 Mar
12 Jun
2 wk before
Shallot (sets)
Allium cepa (Aggregatum-gruppen)
21 Mar
22 Jun
1 wk before
21 Mar
12 Jun
1 wk before
Spinach
Spinacia oleracea
27 Feb – 6 Mar
31 Jul
3-4 wk
27 Mar
21 Aug
0 wk
7 Mar
11 Aug
3 wk before
Sweet potato
Ipomoea batatas
28 Apr – 12 May
4-6 wk
9 Jun
11 wk after
Garden tomato
Solanum lycopersicum
26 Feb – 12 Mar
22 May
6-8 wk
23 Apr
3 Jul
4 wk after
Tomatillo
Physalis ixocarpa
Common Bean
Phaseolus vulgaris
26 Mar – 9 Apr
11 Jul
2-4 wk
23 Apr
25 Jul
4 wk after
7 May
15 Jul
6 wk after
White Cabbage
Brassica oleracea (White Cabbage-gruppen)
13 – 27 Feb
29 Jun
4-6 wk
27 Mar
27 Jul
0 wk
Garden pea
Pisum sativum
27 Feb – 6 Mar
1 Jul
3-4 wk
27 Mar
22 Jul
0 wk
21 Mar
12 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
26 Mar – 9 Apr
17 Jun
4-6 wk
7 May
15 Jul
6 wk after
Lemon balm
Melissa officinalis
16 – 30 Jan
27 May
8-10 wk
27 Mar
22 Jul
0 wk
22 Apr
12 Jul
4 wk after
Dill
Anethum graveolens
21 Mar
1 Aug
1 wk before
Wild chives
Allium schoenoprasum
Season too short
30 Jan – 13 Feb
10 Jun
6-8 wk
27 Mar
22 Jul
0 wk
21 Feb
12 Jul
5 wk before
Spearmint
Mentha spicata
2 – 30 Jan
27 May
8-12 wk
27 Mar
22 Jul
0 wk
22 Apr
12 Jul
4 wk after
Coriander
Coriandrum sativum
27 Mar
21 Aug
0 wk
9 Apr
11 Aug
2 wk after
Garden sage
Salvia officinalis
16 – 30 Jan
12 May
8-10 wk
27 Mar
7 Jul
0 wk
Common thyme
Thymus vulgaris
16 – 30 Jan
17 May
8-10 wk
27 Mar
12 Jul
0 wk
Oregano
Origanum vulgare
30 Jan – 13 Feb
31 May
6-8 wk
27 Mar
12 Jul
0 wk
22 Apr
2 Jul
4 wk after
Parsley
Petroselinum crispum
30 Jan – 13 Feb
31 May
6-8 wk
27 Mar
12 Jul
0 wk
21 Mar
2 Jul
1 wk before
Rosemary
Salvia rosmarinus
19 Dec – 16 Jan
13 Apr
10-14 wk
27 Mar
22 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
9 – 16 Apr
24 Jun
3-4 wk
7 May
15 Jul
6 wk after
Cornflower
Centaurea cyanus
27 Mar
22 Jul
0 wk
21 Mar
12 Jul
1 wk before
Statice
Limonium sinuatum
12 – 26 Feb
17 May
8-10 wk
23 Apr
12 Jul
4 wk after
Sweet William
Dianthus barbatus
30 Jan – 13 Feb
6-8 wk
27 Mar
0 wk
1 Apr
1 wk after
Snow-on-the-mountain
Euphorbia marginata
26 Feb – 12 Mar
31 May
6-8 wk
23 Apr
12 Jul
4 wk after
9 Jun
2 Jul
11 wk after
Pinnate dahlia
Dahlia × pinnata
21 Feb – 7 Mar
31 May
6-8 wk
18 Apr
12 Jul
3 wk after
Pinnate dahlia (tubers)
Dahlia × pinnata
25 Feb – 25 Mar
14 Jun
4-8 wk
22 Apr
12 Jul
4 wk after
22 Apr
2 Jul
4 wk after
Foxglove
Digitalis purpurea
16 – 30 Jan
8-10 wk
27 Mar
0 wk
9 Apr
2 wk after
Busy lizzie
Impatiens walleriana
12 Feb – 12 Mar
10 Jul
8-12 wk
7 May
4 Sep
6 wk after
Creeping zinnia
Sanvitalia procumbens
26 Feb – 12 Mar
10 Jun
6-8 wk
23 Apr
22 Jul
4 wk after
Hyacinth bean
Dolichos lablab
13 – 27 Apr
6 May
4-6 wk
25 May
3 Jun
8 wk after
Chinese lantern
Physalis alkekengi
16 – 30 Jan
27 Apr
8-10 wk
27 Mar
22 Jun
0 wk
Love in a mist
Nigella damascena
27 Mar
7 Jul
0 wk
21 Mar
27 Jun
1 wk before
Strawflower
Xerochrysum bracteatum
26 Feb – 12 Mar
21 May
6-8 wk
23 Apr
2 Jul
4 wk after
9 Jun
22 Jun
11 wk after
Purple-top vervain
Verbena bonariensis
2 – 30 Jan
27 Apr
8-12 wk
27 Mar
22 Jun
0 wk
Cardoon
Cynara cardunculus
29 Jan – 26 Feb
28 Mar
8-12 wk
23 Apr
23 May
4 wk after
Regal-foxtail
Ptilotus nobilis
12 Feb – 12 Mar
10 May
8-12 wk
7 May
5 Jul
6 wk after
Globe amaranth
Gomphrena globosa
12 – 26 Mar
24 May
6-8 wk
7 May
5 Jul
6 wk after
Corn poppy
Papaver rhoeas
27 Mar
22 Jul
0 wk
21 Mar
12 Jul
1 wk before
Snapdragon
Antirrhinum majus
2 – 30 Jan
17 May
8-12 wk
27 Mar
12 Jul
0 wk
1 Apr
2 Jul
1 wk after
Flossflower
Ageratum houstonianum
26 Feb – 12 Mar
27 May
8-10 wk
7 May
22 Jul
6 wk after
Sweet pea
Lathyrus odoratus
30 Jan – 20 Feb
7 Jun
5-8 wk
27 Mar
12 Jul
0 wk
Stock
Matthiola incana
30 Jan – 13 Feb
10 Jun
6-8 wk
27 Mar
22 Jul
0 wk
9 Apr
12 Jul
2 wk after
Wormwood
Artemisia absinthium
30 Jan – 13 Feb
11 May
6-8 wk
27 Mar
22 Jun
0 wk
9 Apr
12 Jun
2 wk after
Mexican sunflower
Tithonia rotundifolia
26 Mar – 9 Apr
2 Jun
4-6 wk
7 May
30 Jun
6 wk after
Garden pansy
Viola × wittrockiana
16 – 30 Jan
27 May
8-10 wk
27 Mar
22 Jul
0 wk
1 Apr
12 Jul
1 wk after
Petunia
Petunia
29 Jan – 26 Feb
17 May
8-12 wk
23 Apr
12 Jul
4 wk after
Sweet Scabious
Scabiosa atropurpurea
30 Jan – 13 Feb
11 May
6-8 wk
27 Mar
22 Jun
0 wk
7 May
12 Jun
6 wk after
Common zinnia
Zinnia elegans
12 – 26 Mar
22 Jun
4-6 wk
23 Apr
20 Jul
4 wk after
Common morning glory
Ipomoea purpurea
2 – 16 Apr
24 Jun
3-5 wk
7 May
15 Jul
6 wk after
Garden cosmos
Cosmos bipinnatus
12 – 26 Mar
14 Jun
4-6 wk
23 Apr
12 Jul
4 wk after
7 May
2 Jul
6 wk after
Scarlet milkweed
Asclepias curassavica
2 – 30 Mar
9 Jun
8-12 wk
25 May
4 Aug
8 wk after
Bee balm
Monarda didyma
2 – 30 Jan
27 Apr
8-12 wk
27 Mar
22 Jun
0 wk
22 Apr
12 Jun
4 wk after
Yarrow
Achillea millefolium
30 Jan – 13 Feb
11 Apr
6-8 wk
27 Mar
23 May
0 wk
9 Apr
13 May
2 wk after
Safflower
Carthamus tinctorius
27 Mar
22 Jun
0 wk
21 Mar
12 Jun
1 wk before
Iceland poppy
Papaver nudicaule
Season too short
30 Jan – 13 Feb
31 May
6-8 wk
27 Mar
12 Jul
0 wk
9 Feb
2 Jul
7 wk before
Bishop's flower
Ammi majus
13 – 27 Feb
14 Jun
4-6 wk
27 Mar
12 Jul
0 wk
9 Apr
2 Jul
2 wk after
Drumsticks
Pycnosorus globosus
12 – 26 Feb
11 Apr
10-12 wk
7 May
20 Jun
6 wk after
Sunflower
Helianthus annuus
26 Mar – 2 Apr
21 Jun
3-4 wk
23 Apr
12 Jul
4 wk after
22 Apr
2 Jul
4 wk after
China aster
Callistephus chinensis
26 Feb – 12 Mar
10 Jun
6-8 wk
23 Apr
22 Jul
4 wk after
7 May
12 Jul
6 wk after
Annual phlox
Phlox drummondii
17 Feb – 3 Mar
10 Jun
6-8 wk
14 Apr
22 Jul
3 wk after
7 May
12 Jul
6 wk after
Hollyhock
Alcea rosea
30 Jan – 13 Feb
6-8 wk
27 Mar
0 wk
9 Apr
2 wk after
Alpine delphinium
Delphinium elatum
2 – 30 Jan
27 Apr
8-12 wk
27 Mar
22 Jun
0 wk
22 Apr
12 Jun
4 wk after
African marigold
Tagetes erecta
26 Feb – 12 Mar
10 Jun
6-8 wk
23 Apr
22 Jul
4 wk after
Black-eyed Susan
Rudbeckia hirta
30 Jan – 13 Feb
31 May
6-8 wk
27 Mar
12 Jul
0 wk
7 May
2 Jul
6 wk after
Wood sage
Salvia nemorosa
16 – 30 Jan
17 Apr
8-10 wk
27 Mar
12 Jun
0 wk
22 Apr
2 Jun
4 wk after
Black-eyed susan vine
Thunbergia alata
26 Feb – 26 Mar
3 Jun
6-10 wk
7 May
15 Jul
6 wk after
California goldenpoppy
Eschscholzia californica
27 Mar
22 Jul
0 wk
21 Mar
12 Jul
1 wk before
Painted tongue
Salpiglossis sinuata
12 – 26 Feb
17 May
8-10 wk
23 Apr
12 Jul
4 wk after
Water forget-me-not
Myosotis scorpioides
Season too short
30 Jan – 13 Feb
11 May
6-8 wk
27 Mar
22 Jun
0 wk
14 Mar
12 Jun
2 wk before