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Rel. frost
Last spring frost (0°C) 19 Mar Frost 9 of 10 years · 20 years of data
Frost-free season 228 days 19 Mar – 2 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)
29 Jan – 12 Feb
22 Jun
5-7 wk
19 Mar
27 Jul
0 wk
13 Mar
17 Jul
1 wk before
Broccoli
Brassica oleracea (Italica-gruppen)
5 – 19 Feb
4 Jul
4-6 wk
19 Mar
1 Aug
0 wk
13 Mar
22 Jul
1 wk before
Chili pepper
Capsicum annuum
Greenhouse
12 Jan – 9 Feb
23 Mar
8-12 wk
6 Apr
18 May
3 wk after
Curly Kale
Brassica oleracea (Curly Kale-gruppen)
29 Jan – 12 Feb
17 Jun
5-7 wk
19 Mar
22 Jul
0 wk
6 Mar
12 Jul
2 wk before
Garden cucumber
Cucumis sativus
Fleece
18 – 25 Mar
17 May
3-4 wk
15 Apr
7 Jun
4 wk after
Florence Fennel
Foeniculum vulgare
25 Mar – 1 Apr
14 Jun
4-5 wk
29 Apr
12 Jul
6 wk after
29 Apr
2 Jul
6 wk after
Butter bean
Phaseolus lunatus
Greenhouse
11 – 18 Apr
13 May
3-4 wk
9 May
3 Jun
7 wk after
Onion
Allium cepa (Cepa-gruppen)
25 Dec – 22 Jan
7 Apr
8-12 wk
19 Mar
2 Jun
0 wk
1 Apr
23 May
2 wk after
Onion (sets)
Allium cepa (Cepa-gruppen)
13 Mar
22 Jun
1 wk before
13 Mar
12 Jun
1 wk before
Maize
Zea mays
Fleece
9 – 16 Mar
7 May
3-4 wk
6 Apr
28 May
3 wk after
Swiss Chard
Beta vulgaris (Flavescens-gruppen)
19 – 26 Feb
11 Jul
3-4 wk
19 Mar
1 Aug
0 wk
1 Apr
22 Jul
2 wk after
Carrot
Daucus carota subsp. sativus var. sativus
19 Mar
12 Jul
0 wk
6 Mar
2 Jul
2 wk before
Palm Kale
Brassica oleracea (Palm Kale-gruppen)
29 Jan – 12 Feb
17 Jun
5-7 wk
19 Mar
22 Jul
0 wk
6 Mar
12 Jul
2 wk before
Potato
Solanum tuberosum
10 – 24 Feb
14 Jun
4-6 wk
24 Mar
12 Jul
1 wk after
24 Mar
2 Jul
1 wk after
Ornamental Kale
Brassica oleracea (Ornamental-gruppen)
29 Jan – 12 Feb
27 Jun
5-7 wk
19 Mar
1 Aug
0 wk
13 Mar
22 Jul
1 wk before
Pumpkin
Cucurbita pepo
1 – 8 Apr
22 May
3-4 wk
29 Apr
12 Jun
6 wk after
Beetroot
Beta vulgaris (Conditiva-gruppen)
19 – 26 Feb
28 Jun
3-4 wk
19 Mar
19 Jul
0 wk
1 Apr
9 Jul
2 wk after
Red Cabbage
Brassica oleracea (Red Cabbage-gruppen)
5 – 19 Feb
29 Jun
4-6 wk
19 Mar
27 Jul
0 wk
Lettuce
Lactuca sativa
19 – 26 Feb
16 Jul
3-4 wk
19 Mar
6 Aug
0 wk
13 Mar
27 Jul
1 wk before
Savoy Cabbage
Brassica oleracea (Savoy Cabbage-gruppen)
5 – 19 Feb
29 Jun
4-6 wk
19 Mar
27 Jul
0 wk
Shallot (bulbs)
Allium cepa (Aggregatum-gruppen)
6 – 20 Feb
8 Jun
2-4 wk
6 Mar
22 Jun
2 wk before
6 Mar
12 Jun
2 wk before
Shallot (sets)
Allium cepa (Aggregatum-gruppen)
13 Mar
22 Jun
1 wk before
13 Mar
12 Jun
1 wk before
Spinach
Spinacia oleracea
19 – 26 Feb
31 Jul
3-4 wk
19 Mar
21 Aug
0 wk
27 Feb
11 Aug
3 wk before
Sweet potato
Ipomoea batatas
20 Apr – 4 May
4-6 wk
1 Jun
11 wk after
Garden tomato
Solanum lycopersicum
Fleece
9 – 23 Feb
16 Apr
6-8 wk
6 Apr
28 May
3 wk after
Tomatillo
Physalis ixocarpa
Common Bean
Phaseolus vulgaris
18 Mar – 1 Apr
24 May
2-4 wk
15 Apr
7 Jun
4 wk after
29 Apr
28 May
6 wk after
White Cabbage
Brassica oleracea (White Cabbage-gruppen)
5 – 19 Feb
29 Jun
4-6 wk
19 Mar
27 Jul
0 wk
Garden pea
Pisum sativum
19 – 26 Feb
1 Jul
3-4 wk
19 Mar
22 Jul
0 wk
13 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
18 Mar – 1 Apr
30 Apr
4-6 wk
29 Apr
28 May
6 wk after
Lemon balm
Melissa officinalis
8 – 22 Jan
27 May
8-10 wk
19 Mar
22 Jul
0 wk
14 Apr
12 Jul
4 wk after
Dill
Anethum graveolens
13 Mar
1 Aug
1 wk before
Wild chives
Allium schoenoprasum
Season too short
22 Jan – 5 Feb
10 Jun
6-8 wk
19 Mar
22 Jul
0 wk
13 Feb
12 Jul
5 wk before
Spearmint
Mentha spicata
25 Dec – 22 Jan
27 May
8-12 wk
19 Mar
22 Jul
0 wk
14 Apr
12 Jul
4 wk after
Coriander
Coriandrum sativum
19 Mar
21 Aug
0 wk
1 Apr
11 Aug
2 wk after
Garden sage
Salvia officinalis
8 – 22 Jan
12 May
8-10 wk
19 Mar
7 Jul
0 wk
Common thyme
Thymus vulgaris
8 – 22 Jan
17 May
8-10 wk
19 Mar
12 Jul
0 wk
Oregano
Origanum vulgare
22 Jan – 5 Feb
31 May
6-8 wk
19 Mar
12 Jul
0 wk
14 Apr
2 Jul
4 wk after
Parsley
Petroselinum crispum
22 Jan – 5 Feb
31 May
6-8 wk
19 Mar
12 Jul
0 wk
13 Mar
2 Jul
1 wk before
Rosemary
Salvia rosmarinus
11 Dec – 8 Jan
13 Apr
10-14 wk
19 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
1 – 8 Apr
7 May
3-4 wk
29 Apr
28 May
6 wk after
Cornflower
Centaurea cyanus
19 Mar
22 Jul
0 wk
13 Mar
12 Jul
1 wk before
Statice
Limonium sinuatum
4 – 18 Feb
21 Apr
8-10 wk
15 Apr
16 Jun
4 wk after
Sweet William
Dianthus barbatus
22 Jan – 5 Feb
6-8 wk
19 Mar
0 wk
24 Mar
1 wk after
Snow-on-the-mountain
Euphorbia marginata
18 Feb – 4 Mar
5 May
6-8 wk
15 Apr
16 Jun
4 wk after
1 Jun
6 Jun
11 wk after
Pinnate dahlia
Dahlia × pinnata
13 – 27 Feb
18 May
6-8 wk
10 Apr
29 Jun
3 wk after
Pinnate dahlia (tubers)
Dahlia × pinnata
17 Feb – 17 Mar
1 Jun
4-8 wk
14 Apr
29 Jun
4 wk after
14 Apr
19 Jun
4 wk after
Foxglove
Digitalis purpurea
8 – 22 Jan
8-10 wk
19 Mar
0 wk
1 Apr
2 wk after
Busy lizzie
Impatiens walleriana
4 Feb – 4 Mar
13 Jun
8-12 wk
29 Apr
8 Aug
6 wk after
Creeping zinnia
Sanvitalia procumbens
18 Feb – 4 Mar
15 May
6-8 wk
15 Apr
26 Jun
4 wk after
Hyacinth bean
Dolichos lablab
Greenhouse
4 – 18 Mar
26 Apr
4-6 wk
15 Apr
24 May
4 wk after
Chinese lantern
Physalis alkekengi
8 – 22 Jan
27 Apr
8-10 wk
19 Mar
22 Jun
0 wk
Love in a mist
Nigella damascena
19 Mar
7 Jul
0 wk
13 Mar
27 Jun
1 wk before
Strawflower
Xerochrysum bracteatum
18 Feb – 4 Mar
25 Apr
6-8 wk
15 Apr
6 Jun
4 wk after
1 Jun
11 wk after
Purple-top vervain
Verbena bonariensis
25 Dec – 22 Jan
27 Apr
8-12 wk
19 Mar
22 Jun
0 wk
Cardoon
Cynara cardunculus
21 Jan – 18 Feb
28 Mar
8-12 wk
15 Apr
23 May
4 wk after
Regal-foxtail
Ptilotus nobilis
4 Feb – 4 Mar
23 Mar
8-12 wk
29 Apr
18 May
6 wk after
Globe amaranth
Gomphrena globosa
4 – 18 Mar
6 Apr
6-8 wk
29 Apr
18 May
6 wk after
Corn poppy
Papaver rhoeas
19 Mar
22 Jul
0 wk
13 Mar
12 Jul
1 wk before
Snapdragon
Antirrhinum majus
25 Dec – 22 Jan
17 May
8-12 wk
19 Mar
12 Jul
0 wk
24 Mar
2 Jul
1 wk after
Flossflower
Ageratum houstonianum
18 Feb – 4 Mar
1 May
8-10 wk
29 Apr
26 Jun
6 wk after
Sweet pea
Lathyrus odoratus
22 Jan – 12 Feb
7 Jun
5-8 wk
19 Mar
12 Jul
0 wk
Stock
Matthiola incana
22 Jan – 5 Feb
10 Jun
6-8 wk
19 Mar
22 Jul
0 wk
1 Apr
12 Jul
2 wk after
Wormwood
Artemisia absinthium
22 Jan – 5 Feb
11 May
6-8 wk
19 Mar
22 Jun
0 wk
1 Apr
12 Jun
2 wk after
Mexican sunflower
Tithonia rotundifolia
18 Mar – 1 Apr
15 Apr
4-6 wk
29 Apr
13 May
6 wk after
Garden pansy
Viola × wittrockiana
8 – 22 Jan
27 May
8-10 wk
19 Mar
22 Jul
0 wk
24 Mar
12 Jul
1 wk after
Petunia
Petunia
21 Jan – 18 Feb
21 Apr
8-12 wk
15 Apr
16 Jun
4 wk after
Sweet Scabious
Scabiosa atropurpurea
22 Jan – 5 Feb
11 May
6-8 wk
19 Mar
22 Jun
0 wk
29 Apr
12 Jun
6 wk after
Common zinnia
Zinnia elegans
4 – 18 Mar
26 May
4-6 wk
15 Apr
23 Jun
4 wk after
Common morning glory
Ipomoea purpurea
25 Mar – 8 Apr
7 May
3-5 wk
29 Apr
28 May
6 wk after
Garden cosmos
Cosmos bipinnatus
4 – 18 Mar
1 Jun
4-6 wk
15 Apr
29 Jun
4 wk after
29 Apr
19 Jun
6 wk after
Scarlet milkweed
Asclepias curassavica
22 Feb – 22 Mar
22 Apr
8-12 wk
17 May
17 Jun
8 wk after
Bee balm
Monarda didyma
25 Dec – 22 Jan
27 Apr
8-12 wk
19 Mar
22 Jun
0 wk
14 Apr
12 Jun
4 wk after
Yarrow
Achillea millefolium
22 Jan – 5 Feb
11 Apr
6-8 wk
19 Mar
23 May
0 wk
1 Apr
13 May
2 wk after
Safflower
Carthamus tinctorius
19 Mar
22 Jun
0 wk
13 Mar
12 Jun
1 wk before
Iceland poppy
Papaver nudicaule
Season too short
22 Jan – 5 Feb
31 May
6-8 wk
19 Mar
12 Jul
0 wk
1 Feb
2 Jul
7 wk before
Bishop's flower
Ammi majus
5 – 19 Feb
14 Jun
4-6 wk
19 Mar
12 Jul
0 wk
1 Apr
2 Jul
2 wk after
Drumsticks
Pycnosorus globosus
4 – 18 Feb
15 Mar
10-12 wk
29 Apr
24 May
6 wk after
Sunflower
Helianthus annuus
18 – 25 Mar
21 Jun
3-4 wk
15 Apr
12 Jul
4 wk after
14 Apr
2 Jul
4 wk after
China aster
Callistephus chinensis
18 Feb – 4 Mar
10 Jun
6-8 wk
15 Apr
22 Jul
4 wk after
29 Apr
12 Jul
6 wk after
Annual phlox
Phlox drummondii
9 – 23 Feb
15 May
6-8 wk
6 Apr
26 Jun
3 wk after
29 Apr
16 Jun
6 wk after
Hollyhock
Alcea rosea
22 Jan – 5 Feb
6-8 wk
19 Mar
0 wk
1 Apr
2 wk after
Alpine delphinium
Delphinium elatum
25 Dec – 22 Jan
27 Apr
8-12 wk
19 Mar
22 Jun
0 wk
14 Apr
12 Jun
4 wk after
African marigold
Tagetes erecta
18 Feb – 4 Mar
15 May
6-8 wk
15 Apr
26 Jun
4 wk after
Black-eyed Susan
Rudbeckia hirta
22 Jan – 5 Feb
31 May
6-8 wk
19 Mar
12 Jul
0 wk
29 Apr
2 Jul
6 wk after
Wood sage
Salvia nemorosa
8 – 22 Jan
17 Apr
8-10 wk
19 Mar
12 Jun
0 wk
14 Apr
2 Jun
4 wk after
Black-eyed susan vine
Thunbergia alata
18 Feb – 18 Mar
16 Apr
6-10 wk
29 Apr
28 May
6 wk after
California goldenpoppy
Eschscholzia californica
19 Mar
22 Jul
0 wk
13 Mar
12 Jul
1 wk before
Painted tongue
Salpiglossis sinuata
4 – 18 Feb
17 May
8-10 wk
15 Apr
12 Jul
4 wk after
Water forget-me-not
Myosotis scorpioides
Season too short
22 Jan – 5 Feb
11 May
6-8 wk
19 Mar
22 Jun
0 wk
6 Mar
12 Jun
2 wk before