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Rel. frost
Last spring frost (0°C) 3 Mar Frost 9 of 10 years · 20 years of data
Frost-free season 262 days 3 Mar – 20 Nov
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)
13 – 27 Jan
20 Jun
5-7 wk
3 Mar
25 Jul
0 wk
25 Feb
15 Jul
1 wk before
Broccoli
Brassica oleracea (Italica-gruppen)
20 Jan – 3 Feb
2 Jul
4-6 wk
3 Mar
30 Jul
0 wk
25 Feb
20 Jul
1 wk before
Chili pepper
Capsicum annuum
Fleece
16 Jan – 13 Feb
11 Apr
8-12 wk
10 Apr
6 Jun
5 wk after
Curly Kale
Brassica oleracea (Curly Kale-gruppen)
13 – 27 Jan
15 Jun
5-7 wk
3 Mar
20 Jul
0 wk
18 Feb
10 Jul
2 wk before
Garden cucumber
Cucumis sativus
25 Mar – 1 Apr
5 Jun
3-4 wk
22 Apr
26 Jun
7 wk after
Florence Fennel
Foeniculum vulgare
18 – 25 Mar
12 Jun
4-5 wk
22 Apr
10 Jul
7 wk after
13 Apr
30 Jun
6 wk after
Butter bean
Phaseolus lunatus
Greenhouse
4 – 11 Apr
22 May
3-4 wk
2 May
12 Jun
9 wk after
Onion
Allium cepa (Cepa-gruppen)
9 Dec – 6 Jan
5 Apr
8-12 wk
3 Mar
31 May
0 wk
16 Mar
21 May
2 wk after
Onion (sets)
Allium cepa (Cepa-gruppen)
25 Feb
20 Jun
1 wk before
25 Feb
10 Jun
1 wk before
Maize
Zea mays
13 – 20 Mar
26 May
3-4 wk
10 Apr
16 Jun
5 wk after
Swiss Chard
Beta vulgaris (Flavescens-gruppen)
5 – 12 Feb
9 Jul
3-4 wk
5 Mar
30 Jul
0 wk
16 Mar
20 Jul
2 wk after
Carrot
Daucus carota subsp. sativus var. sativus
3 Mar
10 Jul
0 wk
18 Feb
30 Jun
2 wk before
Palm Kale
Brassica oleracea (Palm Kale-gruppen)
13 – 27 Jan
15 Jun
5-7 wk
3 Mar
20 Jul
0 wk
18 Feb
10 Jul
2 wk before
Potato
Solanum tuberosum
25 Jan – 8 Feb
12 Jun
4-6 wk
8 Mar
10 Jul
1 wk after
8 Mar
30 Jun
1 wk after
Ornamental Kale
Brassica oleracea (Ornamental-gruppen)
13 – 27 Jan
25 Jun
5-7 wk
3 Mar
30 Jul
0 wk
25 Feb
20 Jul
1 wk before
Pumpkin
Cucurbita pepo
25 Mar – 1 Apr
20 Jun
3-4 wk
22 Apr
11 Jul
7 wk after
Beetroot
Beta vulgaris (Conditiva-gruppen)
5 – 12 Feb
25 Jun
3-4 wk
5 Mar
16 Jul
0 wk
16 Mar
6 Jul
2 wk after
Red Cabbage
Brassica oleracea (Red Cabbage-gruppen)
20 Jan – 3 Feb
27 Jun
4-6 wk
3 Mar
25 Jul
0 wk
Lettuce
Lactuca sativa
3 – 10 Feb
14 Jul
3-4 wk
3 Mar
4 Aug
0 wk
25 Feb
25 Jul
1 wk before
Savoy Cabbage
Brassica oleracea (Savoy Cabbage-gruppen)
20 Jan – 3 Feb
27 Jun
4-6 wk
3 Mar
25 Jul
0 wk
Shallot (bulbs)
Allium cepa (Aggregatum-gruppen)
21 Jan – 4 Feb
6 Jun
2-4 wk
18 Feb
20 Jun
2 wk before
18 Feb
10 Jun
2 wk before
Shallot (sets)
Allium cepa (Aggregatum-gruppen)
25 Feb
20 Jun
1 wk before
25 Feb
10 Jun
1 wk before
Spinach
Spinacia oleracea
3 – 10 Feb
29 Jul
3-4 wk
3 Mar
19 Aug
0 wk
11 Feb
9 Aug
3 wk before
Sweet potato
Ipomoea batatas
4 – 18 Apr
4-6 wk
16 May
11 wk after
Garden tomato
Solanum lycopersicum
13 – 27 Feb
5 May
6-8 wk
10 Apr
16 Jun
5 wk after
Tomatillo
Physalis ixocarpa
Common Bean
Phaseolus vulgaris
13 – 27 Mar
22 Jun
2-4 wk
10 Apr
6 Jul
5 wk after
13 Apr
26 Jun
6 wk after
White Cabbage
Brassica oleracea (White Cabbage-gruppen)
20 Jan – 3 Feb
27 Jun
4-6 wk
3 Mar
25 Jul
0 wk
Garden pea
Pisum sativum
3 – 10 Feb
29 Jun
3-4 wk
3 Mar
20 Jul
0 wk
25 Feb
10 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
11 – 25 Mar
29 May
4-6 wk
22 Apr
26 Jun
7 wk after
Lemon balm
Melissa officinalis
23 Dec – 6 Jan
25 May
8-10 wk
3 Mar
20 Jul
0 wk
29 Mar
10 Jul
4 wk after
Dill
Anethum graveolens
25 Feb
30 Jul
1 wk before
Wild chives
Allium schoenoprasum
Season too short
6 – 20 Jan
8 Jun
6-8 wk
3 Mar
20 Jul
0 wk
28 Jan
10 Jul
5 wk before
Spearmint
Mentha spicata
9 Dec – 6 Jan
25 May
8-12 wk
3 Mar
20 Jul
0 wk
29 Mar
10 Jul
4 wk after
Coriander
Coriandrum sativum
3 Mar
19 Aug
0 wk
16 Mar
9 Aug
2 wk after
Garden sage
Salvia officinalis
25 Dec – 8 Jan
10 May
8-10 wk
5 Mar
5 Jul
0 wk
Common thyme
Thymus vulgaris
23 Dec – 6 Jan
15 May
8-10 wk
3 Mar
10 Jul
0 wk
Oregano
Origanum vulgare
6 – 20 Jan
29 May
6-8 wk
3 Mar
10 Jul
0 wk
29 Mar
30 Jun
4 wk after
Parsley
Petroselinum crispum
6 – 20 Jan
29 May
6-8 wk
3 Mar
10 Jul
0 wk
25 Feb
30 Jun
1 wk before
Rosemary
Salvia rosmarinus
27 Nov – 25 Dec
11 Apr
10-14 wk
5 Mar
20 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
25 Mar – 1 Apr
5 Jun
3-4 wk
22 Apr
26 Jun
7 wk after
Cornflower
Centaurea cyanus
3 Mar
20 Jul
0 wk
25 Feb
10 Jul
1 wk before
Statice
Limonium sinuatum
30 Jan – 13 Feb
10 May
8-10 wk
10 Apr
5 Jul
5 wk after
Sweet William
Dianthus barbatus
6 – 20 Jan
6-8 wk
3 Mar
0 wk
8 Mar
1 wk after
Snow-on-the-mountain
Euphorbia marginata
13 – 27 Feb
24 May
6-8 wk
10 Apr
5 Jul
5 wk after
16 May
25 Jun
11 wk after
Pinnate dahlia
Dahlia × pinnata
6 – 20 Feb
26 May
6-8 wk
3 Apr
7 Jul
4 wk after
Pinnate dahlia (tubers)
Dahlia × pinnata
1 Feb – 1 Mar
9 Jun
4-8 wk
29 Mar
7 Jul
4 wk after
29 Mar
27 Jun
4 wk after
Foxglove
Digitalis purpurea
23 Dec – 6 Jan
8-10 wk
3 Mar
0 wk
16 Mar
2 wk after
Busy lizzie
Impatiens walleriana
28 Jan – 25 Feb
22 Jun
8-12 wk
22 Apr
17 Aug
7 wk after
Creeping zinnia
Sanvitalia procumbens
13 – 27 Feb
3 Jun
6-8 wk
10 Apr
15 Jul
5 wk after
Hyacinth bean
Dolichos lablab
Fleece
11 – 25 Mar
29 Apr
4-6 wk
22 Apr
27 May
7 wk after
Chinese lantern
Physalis alkekengi
25 Dec – 8 Jan
25 Apr
8-10 wk
5 Mar
20 Jun
0 wk
Love in a mist
Nigella damascena
3 Mar
5 Jul
0 wk
25 Feb
25 Jun
1 wk before
Strawflower
Xerochrysum bracteatum
13 – 27 Feb
14 May
6-8 wk
10 Apr
25 Jun
5 wk after
16 May
15 Jun
11 wk after
Purple-top vervain
Verbena bonariensis
11 Dec – 8 Jan
25 Apr
8-12 wk
5 Mar
20 Jun
0 wk
Cardoon
Cynara cardunculus
16 Jan – 13 Feb
26 Mar
8-12 wk
10 Apr
21 May
5 wk after
Regal-foxtail
Ptilotus nobilis
28 Jan – 25 Feb
21 Apr
8-12 wk
22 Apr
16 Jun
7 wk after
Globe amaranth
Gomphrena globosa
25 Feb – 11 Mar
5 May
6-8 wk
22 Apr
16 Jun
7 wk after
Corn poppy
Papaver rhoeas
3 Mar
20 Jul
0 wk
25 Feb
10 Jul
1 wk before
Snapdragon
Antirrhinum majus
9 Dec – 6 Jan
15 May
8-12 wk
3 Mar
10 Jul
0 wk
8 Mar
30 Jun
1 wk after
Flossflower
Ageratum houstonianum
11 – 25 Feb
20 May
8-10 wk
22 Apr
15 Jul
7 wk after
Sweet pea
Lathyrus odoratus
6 – 27 Jan
5 Jun
5-8 wk
3 Mar
10 Jul
0 wk
Stock
Matthiola incana
6 – 20 Jan
8 Jun
6-8 wk
3 Mar
20 Jul
0 wk
16 Mar
10 Jul
2 wk after
Wormwood
Artemisia absinthium
6 – 20 Jan
9 May
6-8 wk
3 Mar
20 Jun
0 wk
16 Mar
10 Jun
2 wk after
Mexican sunflower
Tithonia rotundifolia
11 – 25 Mar
14 May
4-6 wk
22 Apr
11 Jun
7 wk after
Garden pansy
Viola × wittrockiana
23 Dec – 6 Jan
25 May
8-10 wk
3 Mar
20 Jul
0 wk
8 Mar
10 Jul
1 wk after
Petunia
Petunia
16 Jan – 13 Feb
10 May
8-12 wk
10 Apr
5 Jul
5 wk after
Sweet Scabious
Scabiosa atropurpurea
8 – 22 Jan
9 May
6-8 wk
5 Mar
20 Jun
0 wk
13 Apr
10 Jun
6 wk after
Common zinnia
Zinnia elegans
27 Feb – 13 Mar
4 Jun
4-6 wk
10 Apr
2 Jul
5 wk after
Common morning glory
Ipomoea purpurea
18 Mar – 1 Apr
5 Jun
3-5 wk
22 Apr
26 Jun
7 wk after
Garden cosmos
Cosmos bipinnatus
27 Feb – 13 Mar
9 Jun
4-6 wk
10 Apr
7 Jul
5 wk after
13 Apr
27 Jun
6 wk after
Scarlet milkweed
Asclepias curassavica
17 Feb – 17 Mar
21 May
8-12 wk
12 May
16 Jul
10 wk after
Bee balm
Monarda didyma
9 Dec – 6 Jan
25 Apr
8-12 wk
3 Mar
20 Jun
0 wk
29 Mar
10 Jun
4 wk after
Yarrow
Achillea millefolium
6 – 20 Jan
9 Apr
6-8 wk
3 Mar
21 May
0 wk
16 Mar
11 May
2 wk after
Safflower
Carthamus tinctorius
3 Mar
20 Jun
0 wk
25 Feb
10 Jun
1 wk before
Iceland poppy
Papaver nudicaule
Season too short
6 – 20 Jan
29 May
6-8 wk
3 Mar
10 Jul
0 wk
16 Jan
30 Jun
7 wk before
Bishop's flower
Ammi majus
20 Jan – 3 Feb
12 Jun
4-6 wk
3 Mar
10 Jul
0 wk
16 Mar
30 Jun
2 wk after
Drumsticks
Pycnosorus globosus
28 Jan – 11 Feb
24 Mar
10-12 wk
22 Apr
2 Jun
7 wk after
Sunflower
Helianthus annuus
13 – 20 Mar
19 Jun
3-4 wk
10 Apr
10 Jul
5 wk after
29 Mar
30 Jun
4 wk after
China aster
Callistephus chinensis
13 – 27 Feb
8 Jun
6-8 wk
10 Apr
20 Jul
5 wk after
13 Apr
10 Jul
6 wk after
Annual phlox
Phlox drummondii
30 Jan – 13 Feb
3 Jun
6-8 wk
27 Mar
15 Jul
3 wk after
13 Apr
5 Jul
6 wk after
Hollyhock
Alcea rosea
6 – 20 Jan
6-8 wk
3 Mar
0 wk
16 Mar
2 wk after
Alpine delphinium
Delphinium elatum
9 Dec – 6 Jan
25 Apr
8-12 wk
3 Mar
20 Jun
0 wk
29 Mar
10 Jun
4 wk after
African marigold
Tagetes erecta
13 – 27 Feb
3 Jun
6-8 wk
10 Apr
15 Jul
5 wk after
Black-eyed Susan
Rudbeckia hirta
8 – 22 Jan
29 May
6-8 wk
5 Mar
10 Jul
0 wk
13 Apr
30 Jun
6 wk after
Wood sage
Salvia nemorosa
23 Dec – 6 Jan
15 Apr
8-10 wk
3 Mar
10 Jun
0 wk
29 Mar
31 May
4 wk after
Black-eyed susan vine
Thunbergia alata
11 Feb – 11 Mar
15 May
6-10 wk
22 Apr
26 Jun
7 wk after
California goldenpoppy
Eschscholzia californica
3 Mar
20 Jul
0 wk
25 Feb
10 Jul
1 wk before
Painted tongue
Salpiglossis sinuata
30 Jan – 13 Feb
15 May
8-10 wk
10 Apr
10 Jul
5 wk after
Water forget-me-not
Myosotis scorpioides
Season too short
6 – 20 Jan
9 May
6-8 wk
3 Mar
20 Jun
0 wk
18 Feb
10 Jun
2 wk before