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Rel. frost
Last spring frost (0°C) 4 Apr Frost 9 of 10 years · 20 years of data
Frost-free season 191 days 4 Apr – 12 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)
14 – 28 Feb
18 Jun
5-7 wk
4 Apr
23 Jul
0 wk
28 Mar
13 Jul
1 wk before
Broccoli
Brassica oleracea (Italica-gruppen)
21 Feb – 7 Mar
30 Jun
4-6 wk
4 Apr
28 Jul
0 wk
28 Mar
18 Jul
1 wk before
Chili pepper
Capsicum annuum
Greenhouse
21 Jan – 18 Feb
26 Mar
8-12 wk
15 Apr
21 May
2 wk after
Curly Kale
Brassica oleracea (Curly Kale-gruppen)
14 – 28 Feb
13 Jun
5-7 wk
4 Apr
18 Jul
0 wk
23 Mar
8 Jul
2 wk before
Garden cucumber
Cucumis sativus
Fleece
26 Mar – 2 Apr
20 May
3-4 wk
23 Apr
10 Jun
3 wk after
Florence Fennel
Foeniculum vulgare
5 – 12 Apr
10 Jun
4-5 wk
10 May
8 Jul
5 wk after
10 May
28 Jun
5 wk after
Butter bean
Phaseolus lunatus
Greenhouse
19 – 26 Apr
6 May
3-4 wk
17 May
27 May
6 wk after
Onion
Allium cepa (Cepa-gruppen)
10 Jan – 7 Feb
3 Apr
8-12 wk
4 Apr
29 May
0 wk
14 Apr
19 May
1 wk after
Onion (sets)
Allium cepa (Cepa-gruppen)
28 Mar
18 Jun
1 wk before
28 Mar
8 Jun
1 wk before
Maize
Zea mays
Fleece
18 – 25 Mar
10 May
3-4 wk
15 Apr
31 May
2 wk after
Swiss Chard
Beta vulgaris (Flavescens-gruppen)
13 – 20 Mar
7 Jul
3-4 wk
10 Apr
28 Jul
1 wk after
14 Apr
18 Jul
1 wk after
Carrot
Daucus carota subsp. sativus var. sativus
4 Apr
8 Jul
0 wk
23 Mar
28 Jun
2 wk before
Palm Kale
Brassica oleracea (Palm Kale-gruppen)
14 – 28 Feb
13 Jun
5-7 wk
4 Apr
18 Jul
0 wk
23 Mar
8 Jul
2 wk before
Potato
Solanum tuberosum
26 Feb – 12 Mar
7 Jun
4-6 wk
9 Apr
5 Jul
1 wk after
9 Apr
25 Jun
1 wk after
Ornamental Kale
Brassica oleracea (Ornamental-gruppen)
14 – 28 Feb
23 Jun
5-7 wk
4 Apr
28 Jul
0 wk
28 Mar
18 Jul
1 wk before
Pumpkin
Cucurbita pepo
12 – 19 Apr
25 May
3-4 wk
10 May
15 Jun
5 wk after
Beetroot
Beta vulgaris (Conditiva-gruppen)
13 – 20 Mar
17 Jun
3-4 wk
10 Apr
8 Jul
1 wk after
14 Apr
28 Jun
1 wk after
Red Cabbage
Brassica oleracea (Red Cabbage-gruppen)
21 Feb – 7 Mar
25 Jun
4-6 wk
4 Apr
23 Jul
0 wk
Lettuce
Lactuca sativa
7 – 14 Mar
12 Jul
3-4 wk
4 Apr
2 Aug
0 wk
28 Mar
23 Jul
1 wk before
Savoy Cabbage
Brassica oleracea (Savoy Cabbage-gruppen)
21 Feb – 7 Mar
25 Jun
4-6 wk
4 Apr
23 Jul
0 wk
Shallot (bulbs)
Allium cepa (Aggregatum-gruppen)
23 Feb – 9 Mar
4 Jun
2-4 wk
23 Mar
18 Jun
2 wk before
23 Mar
8 Jun
2 wk before
Shallot (sets)
Allium cepa (Aggregatum-gruppen)
28 Mar
18 Jun
1 wk before
28 Mar
8 Jun
1 wk before
Spinach
Spinacia oleracea
7 – 14 Mar
27 Jul
3-4 wk
4 Apr
17 Aug
0 wk
17 Mar
7 Aug
3 wk before
Sweet potato
Ipomoea batatas
1 – 15 May
4-6 wk
12 Jun
10 wk after
Garden tomato
Solanum lycopersicum
Fleece
18 Feb – 4 Mar
19 Apr
6-8 wk
15 Apr
31 May
2 wk after
Tomatillo
Physalis ixocarpa
Common Bean
Phaseolus vulgaris
26 Mar – 9 Apr
27 May
2-4 wk
23 Apr
10 Jun
3 wk after
10 May
31 May
5 wk after
White Cabbage
Brassica oleracea (White Cabbage-gruppen)
21 Feb – 7 Mar
25 Jun
4-6 wk
4 Apr
23 Jul
0 wk
Garden pea
Pisum sativum
7 – 14 Mar
27 Jun
3-4 wk
4 Apr
18 Jul
0 wk
28 Mar
8 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
29 Mar – 12 Apr
3 May
4-6 wk
10 May
31 May
5 wk after
Lemon balm
Melissa officinalis
24 Jan – 7 Feb
23 May
8-10 wk
4 Apr
18 Jul
0 wk
25 Apr
8 Jul
3 wk after
Dill
Anethum graveolens
28 Mar
28 Jul
1 wk before
Wild chives
Allium schoenoprasum
7 – 21 Feb
6 Jun
6-8 wk
4 Apr
18 Jul
0 wk
28 Mar
8 Jul
1 wk before
Spearmint
Mentha spicata
10 Jan – 7 Feb
23 May
8-12 wk
4 Apr
18 Jul
0 wk
25 Apr
8 Jul
3 wk after
Coriander
Coriandrum sativum
4 Apr
17 Aug
0 wk
14 Apr
7 Aug
1 wk after
Garden sage
Salvia officinalis
30 Jan – 13 Feb
8 May
8-10 wk
10 Apr
3 Jul
1 wk after
Common thyme
Thymus vulgaris
24 Jan – 7 Feb
13 May
8-10 wk
4 Apr
8 Jul
0 wk
Oregano
Origanum vulgare
7 – 21 Feb
27 May
6-8 wk
4 Apr
8 Jul
0 wk
25 Apr
28 Jun
3 wk after
Parsley
Petroselinum crispum
7 – 21 Feb
27 May
6-8 wk
4 Apr
8 Jul
0 wk
28 Mar
28 Jun
1 wk before
Rosemary
Salvia rosmarinus
2 – 30 Jan
9 Apr
10-14 wk
10 Apr
18 Jun
1 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
12 – 19 Apr
10 May
3-4 wk
10 May
31 May
5 wk after
Cornflower
Centaurea cyanus
4 Apr
18 Jul
0 wk
28 Mar
8 Jul
1 wk before
Statice
Limonium sinuatum
12 – 26 Feb
16 Apr
8-10 wk
23 Apr
11 Jun
3 wk after
Sweet William
Dianthus barbatus
7 – 21 Feb
6-8 wk
4 Apr
0 wk
9 Apr
1 wk after
Snow-on-the-mountain
Euphorbia marginata
26 Feb – 12 Mar
30 Apr
6-8 wk
23 Apr
11 Jun
3 wk after
12 Jun
10 wk after
Pinnate dahlia
Dahlia × pinnata
21 Feb – 7 Mar
5 May
6-8 wk
18 Apr
16 Jun
2 wk after
Pinnate dahlia (tubers)
Dahlia × pinnata
28 Feb – 28 Mar
19 May
4-8 wk
25 Apr
16 Jun
3 wk after
25 Apr
6 Jun
3 wk after
Foxglove
Digitalis purpurea
24 Jan – 7 Feb
8-10 wk
4 Apr
0 wk
14 Apr
1 wk after
Busy lizzie
Impatiens walleriana
15 Feb – 15 Mar
6 Jun
8-12 wk
10 May
1 Aug
5 wk after
Creeping zinnia
Sanvitalia procumbens
26 Feb – 12 Mar
10 May
6-8 wk
23 Apr
21 Jun
3 wk after
Hyacinth bean
Dolichos lablab
Greenhouse
12 – 26 Mar
19 Apr
4-6 wk
23 Apr
17 May
3 wk after
Chinese lantern
Physalis alkekengi
30 Jan – 13 Feb
23 Apr
8-10 wk
10 Apr
18 Jun
1 wk after
Love in a mist
Nigella damascena
4 Apr
3 Jul
0 wk
28 Mar
23 Jun
1 wk before
Strawflower
Xerochrysum bracteatum
26 Feb – 12 Mar
20 Apr
6-8 wk
23 Apr
1 Jun
3 wk after
12 Jun
10 wk after
Purple-top vervain
Verbena bonariensis
16 Jan – 13 Feb
23 Apr
8-12 wk
10 Apr
18 Jun
1 wk after
Cardoon
Cynara cardunculus
29 Jan – 26 Feb
24 Mar
8-12 wk
23 Apr
19 May
3 wk after
Regal-foxtail
Ptilotus nobilis
15 Feb – 15 Mar
26 Mar
8-12 wk
10 May
21 May
5 wk after
Globe amaranth
Gomphrena globosa
15 – 29 Mar
9 Apr
6-8 wk
10 May
21 May
5 wk after
Corn poppy
Papaver rhoeas
4 Apr
18 Jul
0 wk
28 Mar
8 Jul
1 wk before
Snapdragon
Antirrhinum majus
10 Jan – 7 Feb
13 May
8-12 wk
4 Apr
8 Jul
0 wk
9 Apr
28 Jun
1 wk after
Flossflower
Ageratum houstonianum
1 – 15 Mar
26 Apr
8-10 wk
10 May
21 Jun
5 wk after
Sweet pea
Lathyrus odoratus
7 – 28 Feb
3 Jun
5-8 wk
4 Apr
8 Jul
0 wk
Stock
Matthiola incana
7 – 21 Feb
6 Jun
6-8 wk
4 Apr
18 Jul
0 wk
14 Apr
8 Jul
1 wk after
Wormwood
Artemisia absinthium
7 – 21 Feb
7 May
6-8 wk
4 Apr
18 Jun
0 wk
14 Apr
8 Jun
1 wk after
Mexican sunflower
Tithonia rotundifolia
Fleece
12 – 26 Mar
4 May
4-6 wk
23 Apr
1 Jun
3 wk after
Garden pansy
Viola × wittrockiana
24 Jan – 7 Feb
23 May
8-10 wk
4 Apr
18 Jul
0 wk
9 Apr
8 Jul
1 wk after
Petunia
Petunia
29 Jan – 26 Feb
16 Apr
8-12 wk
23 Apr
11 Jun
3 wk after
Sweet Scabious
Scabiosa atropurpurea
13 – 27 Feb
7 May
6-8 wk
10 Apr
18 Jun
1 wk after
10 May
8 Jun
5 wk after
Common zinnia
Zinnia elegans
12 – 26 Mar
19 May
4-6 wk
23 Apr
16 Jun
3 wk after
Common morning glory
Ipomoea purpurea
5 – 19 Apr
10 May
3-5 wk
10 May
31 May
5 wk after
Garden cosmos
Cosmos bipinnatus
12 – 26 Mar
19 May
4-6 wk
23 Apr
16 Jun
3 wk after
10 May
6 Jun
5 wk after
Scarlet milkweed
Asclepias curassavica
27 Feb – 27 Mar
25 Apr
8-12 wk
22 May
20 Jun
7 wk after
Bee balm
Monarda didyma
10 Jan – 7 Feb
23 Apr
8-12 wk
4 Apr
18 Jun
0 wk
25 Apr
8 Jun
3 wk after
Yarrow
Achillea millefolium
7 – 21 Feb
7 Apr
6-8 wk
4 Apr
19 May
0 wk
14 Apr
9 May
1 wk after
Safflower
Carthamus tinctorius
4 Apr
18 Jun
0 wk
28 Mar
8 Jun
1 wk before
Iceland poppy
Papaver nudicaule
Season too short
7 – 21 Feb
27 May
6-8 wk
4 Apr
8 Jul
0 wk
24 Feb
28 Jun
6 wk before
Bishop's flower
Ammi majus
21 Feb – 7 Mar
10 Jun
4-6 wk
4 Apr
8 Jul
0 wk
14 Apr
28 Jun
1 wk after
Drumsticks
Pycnosorus globosus
Fleece
29 Jan – 12 Feb
18 Mar
10-12 wk
23 Apr
27 May
3 wk after
Sunflower
Helianthus annuus
26 Mar – 2 Apr
17 Jun
3-4 wk
23 Apr
8 Jul
3 wk after
25 Apr
28 Jun
3 wk after
China aster
Callistephus chinensis
26 Feb – 12 Mar
6 Jun
6-8 wk
23 Apr
18 Jul
3 wk after
10 May
8 Jul
5 wk after
Annual phlox
Phlox drummondii
18 Feb – 4 Mar
10 May
6-8 wk
15 Apr
21 Jun
2 wk after
10 May
11 Jun
5 wk after
Hollyhock
Alcea rosea
7 – 21 Feb
6-8 wk
4 Apr
0 wk
14 Apr
1 wk after
Alpine delphinium
Delphinium elatum
10 Jan – 7 Feb
23 Apr
8-12 wk
4 Apr
18 Jun
0 wk
25 Apr
8 Jun
3 wk after
African marigold
Tagetes erecta
26 Feb – 12 Mar
10 May
6-8 wk
23 Apr
21 Jun
3 wk after
Black-eyed Susan
Rudbeckia hirta
13 – 27 Feb
27 May
6-8 wk
10 Apr
8 Jul
1 wk after
10 May
28 Jun
5 wk after
Wood sage
Salvia nemorosa
24 Jan – 7 Feb
13 Apr
8-10 wk
4 Apr
8 Jun
0 wk
25 Apr
29 May
3 wk after
Black-eyed susan vine
Thunbergia alata
1 – 29 Mar
19 Apr
6-10 wk
10 May
31 May
5 wk after
California goldenpoppy
Eschscholzia californica
4 Apr
18 Jul
0 wk
28 Mar
8 Jul
1 wk before
Painted tongue
Salpiglossis sinuata
12 – 26 Feb
13 May
8-10 wk
23 Apr
8 Jul
3 wk after
Water forget-me-not
Myosotis scorpioides
7 – 21 Feb
7 May
6-8 wk
4 Apr
18 Jun
0 wk
14 Apr
8 Jun
1 wk after