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