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Rel. frost
Last spring frost (0°C) 10 Apr Frost 9 of 10 years · 20 years of data
Frost-free season 193 days 10 Apr – 20 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)
20 Feb – 6 Mar
18 Jun
5-7 wk
10 Apr
23 Jul
0 wk
3 Apr
13 Jul
1 wk before
Broccoli
Brassica oleracea (Italica-gruppen)
27 Feb – 13 Mar
30 Jun
4-6 wk
10 Apr
28 Jul
0 wk
3 Apr
18 Jul
1 wk before
Chili pepper
Capsicum annuum
Greenhouse
27 Jan – 24 Feb
18 Mar
8-12 wk
21 Apr
13 May
2 wk after
Curly Kale
Brassica oleracea (Curly Kale-gruppen)
20 Feb – 6 Mar
13 Jun
5-7 wk
10 Apr
18 Jul
0 wk
29 Mar
8 Jul
2 wk before
Garden cucumber
Cucumis sativus
Fleece
1 – 8 Apr
12 May
3-4 wk
29 Apr
2 Jun
3 wk after
Florence Fennel
Foeniculum vulgare
11 – 18 Apr
10 Jun
4-5 wk
16 May
8 Jul
5 wk after
16 May
28 Jun
5 wk after
Butter bean
Phaseolus lunatus
Season too short
25 Apr – 2 May
7 May
3-4 wk
23 May
28 May
6 wk after
Onion
Allium cepa (Cepa-gruppen)
16 Jan – 13 Feb
3 Apr
8-12 wk
10 Apr
29 May
0 wk
20 Apr
19 May
1 wk after
Onion (sets)
Allium cepa (Cepa-gruppen)
3 Apr
18 Jun
1 wk before
3 Apr
8 Jun
1 wk before
Maize
Zea mays
Fleece
24 – 31 Mar
2 May
3-4 wk
21 Apr
23 May
2 wk after
Swiss Chard
Beta vulgaris (Flavescens-gruppen)
19 – 26 Mar
7 Jul
3-4 wk
16 Apr
28 Jul
1 wk after
20 Apr
18 Jul
1 wk after
Carrot
Daucus carota subsp. sativus var. sativus
10 Apr
8 Jul
0 wk
29 Mar
28 Jun
2 wk before
Palm Kale
Brassica oleracea (Palm Kale-gruppen)
20 Feb – 6 Mar
13 Jun
5-7 wk
10 Apr
18 Jul
0 wk
29 Mar
8 Jul
2 wk before
Potato
Solanum tuberosum
4 – 18 Mar
6 Jun
4-6 wk
15 Apr
4 Jul
1 wk after
15 Apr
24 Jun
1 wk after
Ornamental Kale
Brassica oleracea (Ornamental-gruppen)
20 Feb – 6 Mar
23 Jun
5-7 wk
10 Apr
28 Jul
0 wk
3 Apr
18 Jul
1 wk before
Pumpkin
Cucurbita pepo
18 – 25 Apr
17 May
3-4 wk
16 May
7 Jun
5 wk after
Beetroot
Beta vulgaris (Conditiva-gruppen)
19 – 26 Mar
17 Jun
3-4 wk
16 Apr
8 Jul
1 wk after
20 Apr
28 Jun
1 wk after
Red Cabbage
Brassica oleracea (Red Cabbage-gruppen)
27 Feb – 13 Mar
25 Jun
4-6 wk
10 Apr
23 Jul
0 wk
Lettuce
Lactuca sativa
13 – 20 Mar
12 Jul
3-4 wk
10 Apr
2 Aug
0 wk
3 Apr
23 Jul
1 wk before
Savoy Cabbage
Brassica oleracea (Savoy Cabbage-gruppen)
27 Feb – 13 Mar
25 Jun
4-6 wk
10 Apr
23 Jul
0 wk
Shallot (bulbs)
Allium cepa (Aggregatum-gruppen)
1 – 15 Mar
4 Jun
2-4 wk
29 Mar
18 Jun
2 wk before
29 Mar
8 Jun
2 wk before
Shallot (sets)
Allium cepa (Aggregatum-gruppen)
3 Apr
18 Jun
1 wk before
3 Apr
8 Jun
1 wk before
Spinach
Spinacia oleracea
13 – 20 Mar
27 Jul
3-4 wk
10 Apr
17 Aug
0 wk
23 Mar
7 Aug
3 wk before
Sweet potato
Ipomoea batatas
7 – 21 May
4-6 wk
18 Jun
10 wk after
Garden tomato
Solanum lycopersicum
Fleece
24 Feb – 10 Mar
11 Apr
6-8 wk
21 Apr
23 May
2 wk after
Tomatillo
Physalis ixocarpa
Common Bean
Phaseolus vulgaris
1 – 15 Apr
19 May
2-4 wk
29 Apr
2 Jun
3 wk after
16 May
23 May
5 wk after
White Cabbage
Brassica oleracea (White Cabbage-gruppen)
27 Feb – 13 Mar
25 Jun
4-6 wk
10 Apr
23 Jul
0 wk
Garden pea
Pisum sativum
13 – 20 Mar
27 Jun
3-4 wk
10 Apr
18 Jul
0 wk
3 Apr
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
4 – 18 Apr
25 Apr
4-6 wk
16 May
23 May
5 wk after
Lemon balm
Melissa officinalis
30 Jan – 13 Feb
23 May
8-10 wk
10 Apr
18 Jul
0 wk
1 May
8 Jul
3 wk after
Dill
Anethum graveolens
3 Apr
28 Jul
1 wk before
Wild chives
Allium schoenoprasum
13 – 27 Feb
6 Jun
6-8 wk
10 Apr
18 Jul
0 wk
3 Apr
8 Jul
1 wk before
Spearmint
Mentha spicata
16 Jan – 13 Feb
23 May
8-12 wk
10 Apr
18 Jul
0 wk
1 May
8 Jul
3 wk after
Coriander
Coriandrum sativum
10 Apr
17 Aug
0 wk
20 Apr
7 Aug
1 wk after
Garden sage
Salvia officinalis
5 – 19 Feb
8 May
8-10 wk
16 Apr
3 Jul
1 wk after
Common thyme
Thymus vulgaris
30 Jan – 13 Feb
13 May
8-10 wk
10 Apr
8 Jul
0 wk
Oregano
Origanum vulgare
13 – 27 Feb
27 May
6-8 wk
10 Apr
8 Jul
0 wk
1 May
28 Jun
3 wk after
Parsley
Petroselinum crispum
13 – 27 Feb
27 May
6-8 wk
10 Apr
8 Jul
0 wk
3 Apr
28 Jun
1 wk before
Rosemary
Salvia rosmarinus
8 Jan – 5 Feb
9 Apr
10-14 wk
16 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
18 – 25 Apr
2 May
3-4 wk
16 May
23 May
5 wk after
Cornflower
Centaurea cyanus
10 Apr
18 Jul
0 wk
3 Apr
8 Jul
1 wk before
Statice
Limonium sinuatum
18 Feb – 4 Mar
21 Apr
8-10 wk
29 Apr
16 Jun
3 wk after
Sweet William
Dianthus barbatus
13 – 27 Feb
6-8 wk
10 Apr
0 wk
15 Apr
1 wk after
Snow-on-the-mountain
Euphorbia marginata
4 – 18 Mar
5 May
6-8 wk
29 Apr
16 Jun
3 wk after
18 Jun
10 wk after
Pinnate dahlia
Dahlia × pinnata
27 Feb – 13 Mar
5 May
6-8 wk
24 Apr
16 Jun
2 wk after
Pinnate dahlia (tubers)
Dahlia × pinnata
6 Mar – 3 Apr
19 May
4-8 wk
1 May
16 Jun
3 wk after
1 May
6 Jun
3 wk after
Foxglove
Digitalis purpurea
30 Jan – 13 Feb
8-10 wk
10 Apr
0 wk
20 Apr
1 wk after
Busy lizzie
Impatiens walleriana
21 Feb – 21 Mar
7 Jun
8-12 wk
16 May
2 Aug
5 wk after
Creeping zinnia
Sanvitalia procumbens
4 – 18 Mar
15 May
6-8 wk
29 Apr
26 Jun
3 wk after
Hyacinth bean
Dolichos lablab
Greenhouse
18 Mar – 1 Apr
20 Apr
4-6 wk
29 Apr
18 May
3 wk after
Chinese lantern
Physalis alkekengi
5 – 19 Feb
23 Apr
8-10 wk
16 Apr
18 Jun
1 wk after
Love in a mist
Nigella damascena
10 Apr
3 Jul
0 wk
3 Apr
23 Jun
1 wk before
Strawflower
Xerochrysum bracteatum
4 – 18 Mar
25 Apr
6-8 wk
29 Apr
6 Jun
3 wk after
18 Jun
10 wk after
Purple-top vervain
Verbena bonariensis
22 Jan – 19 Feb
23 Apr
8-12 wk
16 Apr
18 Jun
1 wk after
Cardoon
Cynara cardunculus
4 Feb – 4 Mar
24 Mar
8-12 wk
29 Apr
19 May
3 wk after
Regal-foxtail
Ptilotus nobilis
Fleece
4 Feb – 4 Mar
12 Apr
8-12 wk
29 Apr
7 Jun
3 wk after
Globe amaranth
Gomphrena globosa
Fleece
4 – 18 Mar
26 Apr
6-8 wk
29 Apr
7 Jun
3 wk after
Corn poppy
Papaver rhoeas
10 Apr
18 Jul
0 wk
3 Apr
8 Jul
1 wk before
Snapdragon
Antirrhinum majus
16 Jan – 13 Feb
13 May
8-12 wk
10 Apr
8 Jul
0 wk
15 Apr
28 Jun
1 wk after
Flossflower
Ageratum houstonianum
7 – 21 Mar
1 May
8-10 wk
16 May
26 Jun
5 wk after
Sweet pea
Lathyrus odoratus
13 Feb – 6 Mar
3 Jun
5-8 wk
10 Apr
8 Jul
0 wk
Stock
Matthiola incana
13 – 27 Feb
6 Jun
6-8 wk
10 Apr
18 Jul
0 wk
20 Apr
8 Jul
1 wk after
Wormwood
Artemisia absinthium
13 – 27 Feb
7 May
6-8 wk
10 Apr
18 Jun
0 wk
20 Apr
8 Jun
1 wk after
Mexican sunflower
Tithonia rotundifolia
Fleece
18 Mar – 1 Apr
5 May
4-6 wk
29 Apr
2 Jun
3 wk after
Garden pansy
Viola × wittrockiana
30 Jan – 13 Feb
23 May
8-10 wk
10 Apr
18 Jul
0 wk
15 Apr
8 Jul
1 wk after
Petunia
Petunia
4 Feb – 4 Mar
21 Apr
8-12 wk
29 Apr
16 Jun
3 wk after
Sweet Scabious
Scabiosa atropurpurea
19 Feb – 5 Mar
7 May
6-8 wk
16 Apr
18 Jun
1 wk after
16 May
8 Jun
5 wk after
Common zinnia
Zinnia elegans
18 Mar – 1 Apr
20 May
4-6 wk
29 Apr
17 Jun
3 wk after
Common morning glory
Ipomoea purpurea
11 – 25 Apr
2 May
3-5 wk
16 May
23 May
5 wk after
Garden cosmos
Cosmos bipinnatus
18 Mar – 1 Apr
19 May
4-6 wk
29 Apr
16 Jun
3 wk after
16 May
6 Jun
5 wk after
Scarlet milkweed
Asclepias curassavica
5 Mar – 2 Apr
17 Apr
8-12 wk
28 May
12 Jun
7 wk after
Bee balm
Monarda didyma
16 Jan – 13 Feb
23 Apr
8-12 wk
10 Apr
18 Jun
0 wk
1 May
8 Jun
3 wk after
Yarrow
Achillea millefolium
13 – 27 Feb
7 Apr
6-8 wk
10 Apr
19 May
0 wk
20 Apr
9 May
1 wk after
Safflower
Carthamus tinctorius
10 Apr
18 Jun
0 wk
3 Apr
8 Jun
1 wk before
Iceland poppy
Papaver nudicaule
Season too short
13 – 27 Feb
27 May
6-8 wk
10 Apr
8 Jul
0 wk
2 Mar
28 Jun
6 wk before
Bishop's flower
Ammi majus
27 Feb – 13 Mar
10 Jun
4-6 wk
10 Apr
8 Jul
0 wk
20 Apr
28 Jun
1 wk after
Drumsticks
Pycnosorus globosus
Fleece
4 – 18 Feb
18 Mar
10-12 wk
29 Apr
27 May
3 wk after
Sunflower
Helianthus annuus
1 – 8 Apr
17 Jun
3-4 wk
29 Apr
8 Jul
3 wk after
1 May
28 Jun
3 wk after
China aster
Callistephus chinensis
4 – 18 Mar
6 Jun
6-8 wk
29 Apr
18 Jul
3 wk after
16 May
8 Jul
5 wk after
Annual phlox
Phlox drummondii
24 Feb – 10 Mar
15 May
6-8 wk
21 Apr
26 Jun
2 wk after
16 May
16 Jun
5 wk after
Hollyhock
Alcea rosea
13 – 27 Feb
6-8 wk
10 Apr
0 wk
20 Apr
1 wk after
Alpine delphinium
Delphinium elatum
16 Jan – 13 Feb
23 Apr
8-12 wk
10 Apr
18 Jun
0 wk
1 May
8 Jun
3 wk after
African marigold
Tagetes erecta
4 – 18 Mar
15 May
6-8 wk
29 Apr
26 Jun
3 wk after
Black-eyed Susan
Rudbeckia hirta
19 Feb – 5 Mar
27 May
6-8 wk
16 Apr
8 Jul
1 wk after
16 May
28 Jun
5 wk after
Wood sage
Salvia nemorosa
30 Jan – 13 Feb
13 Apr
8-10 wk
10 Apr
8 Jun
0 wk
1 May
29 May
3 wk after
Black-eyed susan vine
Thunbergia alata
7 Mar – 4 Apr
11 Apr
6-10 wk
16 May
23 May
5 wk after
California goldenpoppy
Eschscholzia californica
10 Apr
18 Jul
0 wk
3 Apr
8 Jul
1 wk before
Painted tongue
Salpiglossis sinuata
18 Feb – 4 Mar
13 May
8-10 wk
29 Apr
8 Jul
3 wk after
Water forget-me-not
Myosotis scorpioides
13 – 27 Feb
7 May
6-8 wk
10 Apr
18 Jun
0 wk
20 Apr
8 Jun
1 wk after