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Rel. frost
Last spring frost (0°C) 26 Mar Frost 9 of 10 years · 20 years of data
Frost-free season 203 days 26 Mar – 15 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)
5 – 19 Feb
21 Jun
5-7 wk
26 Mar
26 Jul
0 wk
20 Mar
16 Jul
1 wk before
Broccoli
Brassica oleracea (Italica-gruppen)
12 – 26 Feb
3 Jul
4-6 wk
26 Mar
31 Jul
0 wk
20 Mar
21 Jul
1 wk before
Chili pepper
Capsicum annuum
Greenhouse
19 Jan – 16 Feb
6 Mar
8-12 wk
13 Apr
1 May
3 wk after
Curly Kale
Brassica oleracea (Curly Kale-gruppen)
5 – 19 Feb
16 Jun
5-7 wk
26 Mar
21 Jul
0 wk
13 Mar
11 Jul
2 wk before
Garden cucumber
Cucumis sativus
Fleece
25 Mar – 1 Apr
30 Apr
3-4 wk
22 Apr
21 May
4 wk after
Florence Fennel
Foeniculum vulgare
1 – 8 Apr
13 Jun
4-5 wk
6 May
11 Jul
6 wk after
6 May
1 Jul
6 wk after
Butter bean
Phaseolus lunatus
Greenhouse
18 – 25 Apr
9 May
3-4 wk
16 May
30 May
7 wk after
Onion
Allium cepa (Cepa-gruppen)
1 – 29 Jan
6 Apr
8-12 wk
26 Mar
1 Jun
0 wk
8 Apr
22 May
2 wk after
Onion (sets)
Allium cepa (Cepa-gruppen)
20 Mar
21 Jun
1 wk before
20 Mar
11 Jun
1 wk before
Maize
Zea mays
Fleece
16 – 23 Mar
20 Apr
3-4 wk
13 Apr
11 May
3 wk after
Swiss Chard
Beta vulgaris (Flavescens-gruppen)
26 Feb – 5 Mar
10 Jul
3-4 wk
26 Mar
31 Jul
0 wk
8 Apr
21 Jul
2 wk after
Carrot
Daucus carota subsp. sativus var. sativus
26 Mar
11 Jul
0 wk
13 Mar
1 Jul
2 wk before
Palm Kale
Brassica oleracea (Palm Kale-gruppen)
5 – 19 Feb
16 Jun
5-7 wk
26 Mar
21 Jul
0 wk
13 Mar
11 Jul
2 wk before
Potato
Solanum tuberosum
17 Feb – 3 Mar
9 Jun
4-6 wk
31 Mar
7 Jul
1 wk after
31 Mar
27 Jun
1 wk after
Ornamental Kale
Brassica oleracea (Ornamental-gruppen)
5 – 19 Feb
26 Jun
5-7 wk
26 Mar
31 Jul
0 wk
20 Mar
21 Jul
1 wk before
Pumpkin
Cucurbita pepo
8 – 15 Apr
5 May
3-4 wk
6 May
26 May
6 wk after
Beetroot
Beta vulgaris (Conditiva-gruppen)
26 Feb – 5 Mar
24 Jun
3-4 wk
26 Mar
15 Jul
0 wk
8 Apr
5 Jul
2 wk after
Red Cabbage
Brassica oleracea (Red Cabbage-gruppen)
12 – 26 Feb
28 Jun
4-6 wk
26 Mar
26 Jul
0 wk
Lettuce
Lactuca sativa
26 Feb – 5 Mar
15 Jul
3-4 wk
26 Mar
5 Aug
0 wk
20 Mar
26 Jul
1 wk before
Savoy Cabbage
Brassica oleracea (Savoy Cabbage-gruppen)
12 – 26 Feb
28 Jun
4-6 wk
26 Mar
26 Jul
0 wk
Shallot (bulbs)
Allium cepa (Aggregatum-gruppen)
13 – 27 Feb
7 Jun
2-4 wk
13 Mar
21 Jun
2 wk before
13 Mar
11 Jun
2 wk before
Shallot (sets)
Allium cepa (Aggregatum-gruppen)
20 Mar
21 Jun
1 wk before
20 Mar
11 Jun
1 wk before
Spinach
Spinacia oleracea
26 Feb – 5 Mar
30 Jul
3-4 wk
26 Mar
20 Aug
0 wk
6 Mar
10 Aug
3 wk before
Sweet potato
Ipomoea batatas
27 Apr – 11 May
4-6 wk
8 Jun
11 wk after
Garden tomato
Solanum lycopersicum
Fleece
16 Feb – 2 Mar
30 Mar
6-8 wk
13 Apr
11 May
3 wk after
Tomatillo
Physalis ixocarpa
Common Bean
Phaseolus vulgaris
25 Mar – 8 Apr
7 May
2-4 wk
22 Apr
21 May
4 wk after
6 May
11 May
6 wk after
White Cabbage
Brassica oleracea (White Cabbage-gruppen)
12 – 26 Feb
28 Jun
4-6 wk
26 Mar
26 Jul
0 wk
Garden pea
Pisum sativum
26 Feb – 5 Mar
30 Jun
3-4 wk
26 Mar
21 Jul
0 wk
20 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
25 Mar – 8 Apr
13 Apr
4-6 wk
6 May
11 May
6 wk after
Lemon balm
Melissa officinalis
15 – 29 Jan
26 May
8-10 wk
26 Mar
21 Jul
0 wk
21 Apr
11 Jul
4 wk after
Dill
Anethum graveolens
20 Mar
31 Jul
1 wk before
Wild chives
Allium schoenoprasum
29 Jan – 12 Feb
9 Jun
6-8 wk
26 Mar
21 Jul
0 wk
20 Mar
11 Jul
1 wk before
Spearmint
Mentha spicata
1 – 29 Jan
26 May
8-12 wk
26 Mar
21 Jul
0 wk
21 Apr
11 Jul
4 wk after
Coriander
Coriandrum sativum
26 Mar
20 Aug
0 wk
8 Apr
10 Aug
2 wk after
Garden sage
Salvia officinalis
15 – 29 Jan
11 May
8-10 wk
26 Mar
6 Jul
0 wk
Common thyme
Thymus vulgaris
15 – 29 Jan
16 May
8-10 wk
26 Mar
11 Jul
0 wk
Oregano
Origanum vulgare
29 Jan – 12 Feb
30 May
6-8 wk
26 Mar
11 Jul
0 wk
21 Apr
1 Jul
4 wk after
Parsley
Petroselinum crispum
29 Jan – 12 Feb
30 May
6-8 wk
26 Mar
11 Jul
0 wk
20 Mar
1 Jul
1 wk before
Rosemary
Salvia rosmarinus
18 Dec – 15 Jan
12 Apr
10-14 wk
26 Mar
21 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
8 – 15 Apr
20 Apr
3-4 wk
6 May
11 May
6 wk after
Cornflower
Centaurea cyanus
26 Mar
21 Jul
0 wk
20 Mar
11 Jul
1 wk before
Statice
Limonium sinuatum
11 – 25 Feb
21 Apr
8-10 wk
22 Apr
16 Jun
4 wk after
Sweet William
Dianthus barbatus
29 Jan – 12 Feb
6-8 wk
26 Mar
0 wk
31 Mar
1 wk after
Snow-on-the-mountain
Euphorbia marginata
25 Feb – 11 Mar
5 May
6-8 wk
22 Apr
16 Jun
4 wk after
8 Jun
11 wk after
Pinnate dahlia
Dahlia × pinnata
20 Feb – 6 Mar
19 May
6-8 wk
17 Apr
30 Jun
3 wk after
Pinnate dahlia (tubers)
Dahlia × pinnata
24 Feb – 24 Mar
2 Jun
4-8 wk
21 Apr
30 Jun
4 wk after
21 Apr
20 Jun
4 wk after
Foxglove
Digitalis purpurea
15 – 29 Jan
8-10 wk
26 Mar
0 wk
8 Apr
2 wk after
Busy lizzie
Impatiens walleriana
11 Feb – 11 Mar
9 Jun
8-12 wk
6 May
4 Aug
6 wk after
Creeping zinnia
Sanvitalia procumbens
25 Feb – 11 Mar
15 May
6-8 wk
22 Apr
26 Jun
4 wk after
Hyacinth bean
Dolichos lablab
Greenhouse
11 – 25 Mar
22 Apr
4-6 wk
22 Apr
20 May
4 wk after
Chinese lantern
Physalis alkekengi
15 – 29 Jan
26 Apr
8-10 wk
26 Mar
21 Jun
0 wk
Love in a mist
Nigella damascena
26 Mar
6 Jul
0 wk
20 Mar
26 Jun
1 wk before
Strawflower
Xerochrysum bracteatum
25 Feb – 11 Mar
25 Apr
6-8 wk
22 Apr
6 Jun
4 wk after
8 Jun
11 wk after
Purple-top vervain
Verbena bonariensis
1 – 29 Jan
26 Apr
8-12 wk
26 Mar
21 Jun
0 wk
Cardoon
Cynara cardunculus
28 Jan – 25 Feb
27 Mar
8-12 wk
22 Apr
22 May
4 wk after
Regal-foxtail
Ptilotus nobilis
Fleece
28 Jan – 25 Feb
14 Apr
8-12 wk
22 Apr
9 Jun
4 wk after
Globe amaranth
Gomphrena globosa
Fleece
25 Feb – 11 Mar
28 Apr
6-8 wk
22 Apr
9 Jun
4 wk after
Corn poppy
Papaver rhoeas
26 Mar
21 Jul
0 wk
20 Mar
11 Jul
1 wk before
Snapdragon
Antirrhinum majus
1 – 29 Jan
16 May
8-12 wk
26 Mar
11 Jul
0 wk
31 Mar
1 Jul
1 wk after
Flossflower
Ageratum houstonianum
25 Feb – 11 Mar
1 May
8-10 wk
6 May
26 Jun
6 wk after
Sweet pea
Lathyrus odoratus
29 Jan – 19 Feb
6 Jun
5-8 wk
26 Mar
11 Jul
0 wk
Stock
Matthiola incana
29 Jan – 12 Feb
9 Jun
6-8 wk
26 Mar
21 Jul
0 wk
8 Apr
11 Jul
2 wk after
Wormwood
Artemisia absinthium
29 Jan – 12 Feb
10 May
6-8 wk
26 Mar
21 Jun
0 wk
8 Apr
11 Jun
2 wk after
Mexican sunflower
Tithonia rotundifolia
Fleece
11 – 25 Mar
7 May
4-6 wk
22 Apr
4 Jun
4 wk after
Garden pansy
Viola × wittrockiana
15 – 29 Jan
26 May
8-10 wk
26 Mar
21 Jul
0 wk
31 Mar
11 Jul
1 wk after
Petunia
Petunia
28 Jan – 25 Feb
21 Apr
8-12 wk
22 Apr
16 Jun
4 wk after
Sweet Scabious
Scabiosa atropurpurea
29 Jan – 12 Feb
10 May
6-8 wk
26 Mar
21 Jun
0 wk
6 May
11 Jun
6 wk after
Common zinnia
Zinnia elegans
11 – 25 Mar
22 May
4-6 wk
22 Apr
19 Jun
4 wk after
Common morning glory
Ipomoea purpurea
1 – 15 Apr
20 Apr
3-5 wk
6 May
11 May
6 wk after
Garden cosmos
Cosmos bipinnatus
11 – 25 Mar
2 Jun
4-6 wk
22 Apr
30 Jun
4 wk after
6 May
20 Jun
6 wk after
Scarlet milkweed
Asclepias curassavica
1 – 29 Mar
5 Apr
8-12 wk
24 May
31 May
8 wk after
Bee balm
Monarda didyma
1 – 29 Jan
26 Apr
8-12 wk
26 Mar
21 Jun
0 wk
21 Apr
11 Jun
4 wk after
Yarrow
Achillea millefolium
29 Jan – 12 Feb
10 Apr
6-8 wk
26 Mar
22 May
0 wk
8 Apr
12 May
2 wk after
Safflower
Carthamus tinctorius
26 Mar
21 Jun
0 wk
20 Mar
11 Jun
1 wk before
Iceland poppy
Papaver nudicaule
Season too short
29 Jan – 12 Feb
30 May
6-8 wk
26 Mar
11 Jul
0 wk
8 Feb
1 Jul
7 wk before
Bishop's flower
Ammi majus
12 – 26 Feb
13 Jun
4-6 wk
26 Mar
11 Jul
0 wk
8 Apr
1 Jul
2 wk after
Drumsticks
Pycnosorus globosus
11 – 25 Feb
11 Mar
10-12 wk
6 May
20 May
6 wk after
Sunflower
Helianthus annuus
25 Mar – 1 Apr
20 Jun
3-4 wk
22 Apr
11 Jul
4 wk after
21 Apr
1 Jul
4 wk after
China aster
Callistephus chinensis
25 Feb – 11 Mar
9 Jun
6-8 wk
22 Apr
21 Jul
4 wk after
6 May
11 Jul
6 wk after
Annual phlox
Phlox drummondii
16 Feb – 2 Mar
15 May
6-8 wk
13 Apr
26 Jun
3 wk after
6 May
16 Jun
6 wk after
Hollyhock
Alcea rosea
29 Jan – 12 Feb
6-8 wk
26 Mar
0 wk
8 Apr
2 wk after
Alpine delphinium
Delphinium elatum
1 – 29 Jan
26 Apr
8-12 wk
26 Mar
21 Jun
0 wk
21 Apr
11 Jun
4 wk after
African marigold
Tagetes erecta
25 Feb – 11 Mar
15 May
6-8 wk
22 Apr
26 Jun
4 wk after
Black-eyed Susan
Rudbeckia hirta
29 Jan – 12 Feb
30 May
6-8 wk
26 Mar
11 Jul
0 wk
6 May
1 Jul
6 wk after
Wood sage
Salvia nemorosa
15 – 29 Jan
16 Apr
8-10 wk
26 Mar
11 Jun
0 wk
21 Apr
1 Jun
4 wk after
Black-eyed susan vine
Thunbergia alata
25 Feb – 25 Mar
30 Mar
6-10 wk
6 May
11 May
6 wk after
California goldenpoppy
Eschscholzia californica
26 Mar
21 Jul
0 wk
20 Mar
11 Jul
1 wk before
Painted tongue
Salpiglossis sinuata
11 – 25 Feb
16 May
8-10 wk
22 Apr
11 Jul
4 wk after
Water forget-me-not
Myosotis scorpioides
29 Jan – 12 Feb
10 May
6-8 wk
26 Mar
21 Jun
0 wk
8 Apr
11 Jun
2 wk after