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Rel. frost
Last spring frost (0°C) 16 Apr Frost 9 of 10 years · 20 years of data
Frost-free season 170 days 16 Apr – 3 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)
26 Feb – 12 Mar
19 Jun
5-7 wk
16 Apr
24 Jul
0 wk
9 Apr
14 Jul
1 wk before
Broccoli
Brassica oleracea (Italica-gruppen)
5 – 19 Mar
1 Jul
4-6 wk
16 Apr
29 Jul
0 wk
9 Apr
19 Jul
1 wk before
Chili pepper
Capsicum annuum
Season too short
2 Feb – 2 Mar
5 Feb
8-12 wk
27 Apr
2 wk after
Curly Kale
Brassica oleracea (Curly Kale-gruppen)
26 Feb – 12 Mar
14 Jun
5-7 wk
16 Apr
19 Jul
0 wk
4 Apr
9 Jul
2 wk before
Garden cucumber
Cucumis sativus
Greenhouse
30 Mar – 6 Apr
24 May
3-4 wk
27 Apr
14 Jun
2 wk after
Florence Fennel
Foeniculum vulgare
17 – 24 Apr
11 Jun
4-5 wk
22 May
9 Jul
5 wk after
22 May
29 Jun
5 wk after
Butter bean
Phaseolus lunatus
Season too short
1 – 8 May
3-4 wk
29 May
6 wk after
Onion
Allium cepa (Cepa-gruppen)
22 Jan – 19 Feb
4 Apr
8-12 wk
16 Apr
30 May
0 wk
26 Apr
20 May
1 wk after
Onion (sets)
Allium cepa (Cepa-gruppen)
9 Apr
19 Jun
1 wk before
9 Apr
9 Jun
1 wk before
Maize
Zea mays
Greenhouse
19 – 26 Mar
14 May
3-4 wk
16 Apr
4 Jun
0 wk
Swiss Chard
Beta vulgaris (Flavescens-gruppen)
25 Mar – 1 Apr
8 Jul
3-4 wk
22 Apr
29 Jul
1 wk after
26 Apr
19 Jul
1 wk after
Carrot
Daucus carota subsp. sativus var. sativus
16 Apr
9 Jul
0 wk
4 Apr
29 Jun
2 wk before
Palm Kale
Brassica oleracea (Palm Kale-gruppen)
26 Feb – 12 Mar
14 Jun
5-7 wk
16 Apr
19 Jul
0 wk
4 Apr
9 Jul
2 wk before
Potato
Solanum tuberosum
10 – 24 Mar
7 Jun
4-6 wk
21 Apr
5 Jul
1 wk after
21 Apr
25 Jun
1 wk after
Ornamental Kale
Brassica oleracea (Ornamental-gruppen)
26 Feb – 12 Mar
24 Jun
5-7 wk
16 Apr
29 Jul
0 wk
9 Apr
19 Jul
1 wk before
Pumpkin
Cucurbita pepo
Fleece
7 – 14 Apr
29 May
3-4 wk
5 May
19 Jun
3 wk after
Beetroot
Beta vulgaris (Conditiva-gruppen)
25 Mar – 1 Apr
20 Jun
3-4 wk
22 Apr
11 Jul
1 wk after
26 Apr
1 Jul
1 wk after
Red Cabbage
Brassica oleracea (Red Cabbage-gruppen)
5 – 19 Mar
26 Jun
4-6 wk
16 Apr
24 Jul
0 wk
Lettuce
Lactuca sativa
19 – 26 Mar
13 Jul
3-4 wk
16 Apr
3 Aug
0 wk
9 Apr
24 Jul
1 wk before
Savoy Cabbage
Brassica oleracea (Savoy Cabbage-gruppen)
5 – 19 Mar
26 Jun
4-6 wk
16 Apr
24 Jul
0 wk
Shallot (bulbs)
Allium cepa (Aggregatum-gruppen)
7 – 21 Mar
5 Jun
2-4 wk
4 Apr
19 Jun
2 wk before
4 Apr
9 Jun
2 wk before
Shallot (sets)
Allium cepa (Aggregatum-gruppen)
9 Apr
19 Jun
1 wk before
9 Apr
9 Jun
1 wk before
Spinach
Spinacia oleracea
19 – 26 Mar
28 Jul
3-4 wk
16 Apr
18 Aug
0 wk
29 Mar
8 Aug
3 wk before
Sweet potato
Ipomoea batatas
13 – 27 May
4-6 wk
24 Jun
10 wk after
Garden tomato
Solanum lycopersicum
Greenhouse
19 Feb – 5 Mar
23 Apr
6-8 wk
16 Apr
4 Jun
0 wk
Tomatillo
Physalis ixocarpa
Common Bean
Phaseolus vulgaris
Fleece
30 Mar – 13 Apr
31 May
2-4 wk
27 Apr
14 Jun
2 wk after
7 May
4 Jun
3 wk after
White Cabbage
Brassica oleracea (White Cabbage-gruppen)
5 – 19 Mar
26 Jun
4-6 wk
16 Apr
24 Jul
0 wk
Garden pea
Pisum sativum
19 – 26 Mar
28 Jun
3-4 wk
16 Apr
19 Jul
0 wk
9 Apr
9 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
Fleece
24 Mar – 7 Apr
7 May
4-6 wk
5 May
4 Jun
3 wk after
Lemon balm
Melissa officinalis
5 – 19 Feb
24 May
8-10 wk
16 Apr
19 Jul
0 wk
7 May
9 Jul
3 wk after
Dill
Anethum graveolens
9 Apr
29 Jul
1 wk before
Wild chives
Allium schoenoprasum
19 Feb – 5 Mar
7 Jun
6-8 wk
16 Apr
19 Jul
0 wk
9 Apr
9 Jul
1 wk before
Spearmint
Mentha spicata
22 Jan – 19 Feb
24 May
8-12 wk
16 Apr
19 Jul
0 wk
7 May
9 Jul
3 wk after
Coriander
Coriandrum sativum
16 Apr
18 Aug
0 wk
26 Apr
8 Aug
1 wk after
Garden sage
Salvia officinalis
11 – 25 Feb
9 May
8-10 wk
22 Apr
4 Jul
1 wk after
Common thyme
Thymus vulgaris
5 – 19 Feb
14 May
8-10 wk
16 Apr
9 Jul
0 wk
Oregano
Origanum vulgare
19 Feb – 5 Mar
28 May
6-8 wk
16 Apr
9 Jul
0 wk
7 May
29 Jun
3 wk after
Parsley
Petroselinum crispum
19 Feb – 5 Mar
28 May
6-8 wk
16 Apr
9 Jul
0 wk
9 Apr
29 Jun
1 wk before
Rosemary
Salvia rosmarinus
14 Jan – 11 Feb
10 Apr
10-14 wk
22 Apr
19 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
Fleece
7 – 14 Apr
14 May
3-4 wk
5 May
4 Jun
3 wk after
Cornflower
Centaurea cyanus
16 Apr
19 Jul
0 wk
9 Apr
9 Jul
1 wk before
Statice
Limonium sinuatum
24 Feb – 10 Mar
14 Apr
8-10 wk
5 May
9 Jun
3 wk after
Sweet William
Dianthus barbatus
19 Feb – 5 Mar
6-8 wk
16 Apr
0 wk
21 Apr
1 wk after
Snow-on-the-mountain
Euphorbia marginata
10 – 24 Mar
28 Apr
6-8 wk
5 May
9 Jun
3 wk after
24 Jun
10 wk after
Pinnate dahlia
Dahlia × pinnata
5 – 19 Mar
1 May
6-8 wk
30 Apr
12 Jun
2 wk after
Pinnate dahlia (tubers)
Dahlia × pinnata
12 Mar – 9 Apr
15 May
4-8 wk
7 May
12 Jun
3 wk after
7 May
2 Jun
3 wk after
Foxglove
Digitalis purpurea
5 – 19 Feb
8-10 wk
16 Apr
0 wk
26 Apr
1 wk after
Busy lizzie
Impatiens walleriana
27 Feb – 27 Mar
25 May
8-12 wk
22 May
20 Jul
5 wk after
Creeping zinnia
Sanvitalia procumbens
10 – 24 Mar
8 May
6-8 wk
5 May
19 Jun
3 wk after
Hyacinth bean
Dolichos lablab
Greenhouse
24 Mar – 7 Apr
7 Apr
4-6 wk
5 May
5 May
3 wk after
Chinese lantern
Physalis alkekengi
11 – 25 Feb
24 Apr
8-10 wk
22 Apr
19 Jun
1 wk after
Love in a mist
Nigella damascena
16 Apr
4 Jul
0 wk
9 Apr
24 Jun
1 wk before
Strawflower
Xerochrysum bracteatum
10 – 24 Mar
18 Apr
6-8 wk
5 May
30 May
3 wk after
24 Jun
10 wk after
Purple-top vervain
Verbena bonariensis
28 Jan – 25 Feb
24 Apr
8-12 wk
22 Apr
19 Jun
1 wk after
Cardoon
Cynara cardunculus
10 Feb – 10 Mar
25 Mar
8-12 wk
5 May
20 May
3 wk after
Regal-foxtail
Ptilotus nobilis
Fleece
10 Feb – 10 Mar
30 Mar
8-12 wk
5 May
25 May
3 wk after
Globe amaranth
Gomphrena globosa
Fleece
10 – 24 Mar
13 Apr
6-8 wk
5 May
25 May
3 wk after
Corn poppy
Papaver rhoeas
16 Apr
19 Jul
0 wk
9 Apr
9 Jul
1 wk before
Snapdragon
Antirrhinum majus
22 Jan – 19 Feb
14 May
8-12 wk
16 Apr
9 Jul
0 wk
21 Apr
29 Jun
1 wk after
Flossflower
Ageratum houstonianum
13 – 27 Mar
24 Apr
8-10 wk
22 May
19 Jun
5 wk after
Sweet pea
Lathyrus odoratus
19 Feb – 12 Mar
4 Jun
5-8 wk
16 Apr
9 Jul
0 wk
Stock
Matthiola incana
19 Feb – 5 Mar
7 Jun
6-8 wk
16 Apr
19 Jul
0 wk
26 Apr
9 Jul
1 wk after
Wormwood
Artemisia absinthium
19 Feb – 5 Mar
8 May
6-8 wk
16 Apr
19 Jun
0 wk
26 Apr
9 Jun
1 wk after
Mexican sunflower
Tithonia rotundifolia
Fleece
24 Mar – 7 Apr
22 Apr
4-6 wk
5 May
20 May
3 wk after
Garden pansy
Viola × wittrockiana
5 – 19 Feb
24 May
8-10 wk
16 Apr
19 Jul
0 wk
21 Apr
9 Jul
1 wk after
Petunia
Petunia
10 Feb – 10 Mar
14 Apr
8-12 wk
5 May
9 Jun
3 wk after
Sweet Scabious
Scabiosa atropurpurea
25 Feb – 11 Mar
8 May
6-8 wk
22 Apr
19 Jun
1 wk after
22 May
9 Jun
5 wk after
Common zinnia
Zinnia elegans
24 Mar – 7 Apr
7 May
4-6 wk
5 May
4 Jun
3 wk after
Common morning glory
Ipomoea purpurea
Fleece
31 Mar – 14 Apr
14 May
3-5 wk
5 May
4 Jun
3 wk after
Garden cosmos
Cosmos bipinnatus
24 Mar – 7 Apr
15 May
4-6 wk
5 May
12 Jun
3 wk after
22 May
2 Jun
5 wk after
Scarlet milkweed
Asclepias curassavica
Fleece
27 Feb – 27 Mar
29 Apr
8-12 wk
22 May
24 Jun
5 wk after
Bee balm
Monarda didyma
22 Jan – 19 Feb
24 Apr
8-12 wk
16 Apr
19 Jun
0 wk
7 May
9 Jun
3 wk after
Yarrow
Achillea millefolium
19 Feb – 5 Mar
8 Apr
6-8 wk
16 Apr
20 May
0 wk
26 Apr
10 May
1 wk after
Safflower
Carthamus tinctorius
16 Apr
19 Jun
0 wk
9 Apr
9 Jun
1 wk before
Iceland poppy
Papaver nudicaule
Season too short
19 Feb – 5 Mar
28 May
6-8 wk
16 Apr
9 Jul
0 wk
8 Mar
29 Jun
6 wk before
Bishop's flower
Ammi majus
5 – 19 Mar
11 Jun
4-6 wk
16 Apr
9 Jul
0 wk
26 Apr
29 Jun
1 wk after
Drumsticks
Pycnosorus globosus
Fleece
10 – 24 Feb
14 Mar
10-12 wk
5 May
23 May
3 wk after
Sunflower
Helianthus annuus
7 – 14 Apr
18 Jun
3-4 wk
5 May
9 Jul
3 wk after
7 May
29 Jun
3 wk after
China aster
Callistephus chinensis
10 – 24 Mar
7 Jun
6-8 wk
5 May
19 Jul
3 wk after
22 May
9 Jul
5 wk after
Annual phlox
Phlox drummondii
2 – 16 Mar
8 May
6-8 wk
27 Apr
19 Jun
2 wk after
22 May
9 Jun
5 wk after
Hollyhock
Alcea rosea
19 Feb – 5 Mar
6-8 wk
16 Apr
0 wk
26 Apr
1 wk after
Alpine delphinium
Delphinium elatum
22 Jan – 19 Feb
24 Apr
8-12 wk
16 Apr
19 Jun
0 wk
7 May
9 Jun
3 wk after
African marigold
Tagetes erecta
10 – 24 Mar
8 May
6-8 wk
5 May
19 Jun
3 wk after
Black-eyed Susan
Rudbeckia hirta
25 Feb – 11 Mar
28 May
6-8 wk
22 Apr
9 Jul
1 wk after
22 May
29 Jun
5 wk after
Wood sage
Salvia nemorosa
5 – 19 Feb
14 Apr
8-10 wk
16 Apr
9 Jun
0 wk
7 May
30 May
3 wk after
Black-eyed susan vine
Thunbergia alata
Fleece
24 Feb – 24 Mar
23 Apr
6-10 wk
5 May
4 Jun
3 wk after
California goldenpoppy
Eschscholzia californica
16 Apr
19 Jul
0 wk
9 Apr
9 Jul
1 wk before
Painted tongue
Salpiglossis sinuata
24 Feb – 10 Mar
14 May
8-10 wk
5 May
9 Jul
3 wk after
Water forget-me-not
Myosotis scorpioides
19 Feb – 5 Mar
8 May
6-8 wk
16 Apr
19 Jun
0 wk
26 Apr
9 Jun
1 wk after