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Rel. frost
Last spring frost (0°C) 14 Apr Frost 9 of 10 years · 20 years of data
Frost-free season 189 days 14 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)
24 Feb – 10 Mar
16 Jun
5-7 wk
14 Apr
21 Jul
0 wk
18 Apr
11 Jul
1 wk after
Broccoli
Brassica oleracea (Italica-gruppen)
3 – 17 Mar
28 Jun
4-6 wk
14 Apr
26 Jul
0 wk
18 Apr
16 Jul
1 wk after
Chili pepper
Capsicum annuum
Season too short
7 Feb – 7 Mar
10 Feb
8-12 wk
2 May
3 wk after
Curly Kale
Brassica oleracea (Curly Kale-gruppen)
24 Feb – 10 Mar
11 Jun
5-7 wk
14 Apr
16 Jul
0 wk
14 Apr
6 Jul
0 wk
Garden cucumber
Cucumis sativus
Greenhouse
4 – 11 Apr
9 Jun
3-4 wk
2 May
30 Jun
3 wk after
Florence Fennel
Foeniculum vulgare
22 – 29 Apr
8 Jun
4-5 wk
27 May
6 Jul
6 wk after
2 Jun
26 Jun
7 wk after
Butter bean
Phaseolus lunatus
Season too short
8 – 15 May
10 May
3-4 wk
5 Jun
7 wk after
Onion
Allium cepa (Cepa-gruppen)
20 Jan – 17 Feb
31 Mar
8-12 wk
14 Apr
26 May
0 wk
5 May
16 May
3 wk after
Onion (sets)
Allium cepa (Cepa-gruppen)
18 Apr
15 Jun
1 wk after
18 Apr
5 Jun
1 wk after
Maize
Zea mays
Greenhouse
17 – 24 Mar
30 May
3-4 wk
14 Apr
20 Jun
0 wk
Swiss Chard
Beta vulgaris (Flavescens-gruppen)
21 – 28 Mar
5 Jul
3-4 wk
18 Apr
26 Jul
1 wk after
5 May
16 Jul
3 wk after
Carrot
Daucus carota subsp. sativus var. sativus
14 Apr
6 Jul
0 wk
14 Apr
26 Jun
0 wk
Palm Kale
Brassica oleracea (Palm Kale-gruppen)
24 Feb – 10 Mar
11 Jun
5-7 wk
14 Apr
16 Jul
0 wk
14 Apr
6 Jul
0 wk
Potato
Solanum tuberosum
19 Mar – 2 Apr
28 May
4-6 wk
30 Apr
25 Jun
2 wk after
30 Apr
15 Jun
2 wk after
Ornamental Kale
Brassica oleracea (Ornamental-gruppen)
24 Feb – 10 Mar
21 Jun
5-7 wk
14 Apr
26 Jul
0 wk
18 Apr
16 Jul
1 wk after
Pumpkin
Cucurbita pepo
Fleece
8 – 15 Apr
14 Jun
3-4 wk
6 May
5 Jul
3 wk after
Beetroot
Beta vulgaris (Conditiva-gruppen)
21 – 28 Mar
9 Jun
3-4 wk
18 Apr
30 Jun
1 wk after
5 May
20 Jun
3 wk after
Red Cabbage
Brassica oleracea (Red Cabbage-gruppen)
3 – 17 Mar
23 Jun
4-6 wk
14 Apr
21 Jul
0 wk
Lettuce
Lactuca sativa
17 – 24 Mar
10 Jul
3-4 wk
14 Apr
31 Jul
0 wk
18 Apr
21 Jul
1 wk after
Savoy Cabbage
Brassica oleracea (Savoy Cabbage-gruppen)
3 – 17 Mar
23 Jun
4-6 wk
14 Apr
21 Jul
0 wk
Shallot (bulbs)
Allium cepa (Aggregatum-gruppen)
17 – 31 Mar
2 Jun
2-4 wk
14 Apr
16 Jun
0 wk
14 Apr
6 Jun
0 wk
Shallot (sets)
Allium cepa (Aggregatum-gruppen)
18 Apr
15 Jun
1 wk after
18 Apr
5 Jun
1 wk after
Spinach
Spinacia oleracea
17 – 24 Mar
25 Jul
3-4 wk
14 Apr
15 Aug
0 wk
10 Apr
5 Aug
1 wk before
Sweet potato
Ipomoea batatas
16 – 30 May
4-6 wk
27 Jun
11 wk after
Garden tomato
Solanum lycopersicum
Greenhouse
17 Feb – 3 Mar
9 May
6-8 wk
14 Apr
20 Jun
0 wk
Tomatillo
Physalis ixocarpa
Common Bean
Phaseolus vulgaris
Fleece
4 – 18 Apr
16 Jun
2-4 wk
2 May
30 Jun
3 wk after
19 May
20 Jun
5 wk after
White Cabbage
Brassica oleracea (White Cabbage-gruppen)
3 – 17 Mar
23 Jun
4-6 wk
14 Apr
21 Jul
0 wk
Garden pea
Pisum sativum
17 – 24 Mar
25 Jun
3-4 wk
14 Apr
16 Jul
0 wk
18 Apr
6 Jul
1 wk after

Herbs

Plant Sow indoors Transplant Direct sow
Earliest Latest Growing time Earliest Latest Rel. frost Earliest Latest Rel. frost
Basil
Ocimum basilicum
Fleece
25 Mar – 8 Apr
23 May
4-6 wk
6 May
20 Jun
3 wk after
Lemon balm
Melissa officinalis
3 – 17 Feb
21 May
8-10 wk
14 Apr
16 Jul
0 wk
19 May
6 Jul
5 wk after
Dill
Anethum graveolens
18 Apr
26 Jul
1 wk after
Wild chives
Allium schoenoprasum
17 Feb – 3 Mar
4 Jun
6-8 wk
14 Apr
16 Jul
0 wk
18 Apr
6 Jul
1 wk after
Spearmint
Mentha spicata
20 Jan – 17 Feb
21 May
8-12 wk
14 Apr
16 Jul
0 wk
19 May
6 Jul
5 wk after
Coriander
Coriandrum sativum
14 Apr
15 Aug
0 wk
5 May
5 Aug
3 wk after
Garden sage
Salvia officinalis
7 – 21 Feb
6 May
8-10 wk
18 Apr
1 Jul
1 wk after
Common thyme
Thymus vulgaris
3 – 17 Feb
11 May
8-10 wk
14 Apr
6 Jul
0 wk
Oregano
Origanum vulgare
17 Feb – 3 Mar
25 May
6-8 wk
14 Apr
6 Jul
0 wk
19 May
26 Jun
5 wk after
Parsley
Petroselinum crispum
17 Feb – 3 Mar
25 May
6-8 wk
14 Apr
6 Jul
0 wk
18 Apr
26 Jun
1 wk after
Rosemary
Salvia rosmarinus
10 Jan – 7 Feb
7 Apr
10-14 wk
18 Apr
16 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
8 – 15 Apr
30 May
3-4 wk
6 May
20 Jun
3 wk after
Cornflower
Centaurea cyanus
14 Apr
16 Jul
0 wk
18 Apr
6 Jul
1 wk after
Statice
Limonium sinuatum
25 Feb – 11 Mar
20 Apr
8-10 wk
6 May
15 Jun
3 wk after
Sweet William
Dianthus barbatus
17 Feb – 3 Mar
6-8 wk
14 Apr
0 wk
30 Apr
2 wk after
Snow-on-the-mountain
Euphorbia marginata
11 – 25 Mar
4 May
6-8 wk
6 May
15 Jun
3 wk after
27 Jun
11 wk after
Pinnate dahlia
Dahlia × pinnata
9 – 23 Mar
5 May
6-8 wk
4 May
16 Jun
3 wk after
Pinnate dahlia (tubers)
Dahlia × pinnata
24 Mar – 21 Apr
19 May
4-8 wk
19 May
16 Jun
5 wk after
19 May
6 Jun
5 wk after
Foxglove
Digitalis purpurea
3 – 17 Feb
8-10 wk
14 Apr
0 wk
5 May
3 wk after
Busy lizzie
Impatiens walleriana
4 Mar – 1 Apr
10 Jun
8-12 wk
27 May
5 Aug
6 wk after
Creeping zinnia
Sanvitalia procumbens
11 – 25 Mar
14 May
6-8 wk
6 May
25 Jun
3 wk after
Hyacinth bean
Dolichos lablab
Greenhouse
25 Mar – 8 Apr
23 Apr
4-6 wk
6 May
21 May
3 wk after
Chinese lantern
Physalis alkekengi
7 – 21 Feb
21 Apr
8-10 wk
18 Apr
16 Jun
1 wk after
Love in a mist
Nigella damascena
14 Apr
1 Jul
0 wk
18 Apr
21 Jun
1 wk after
Strawflower
Xerochrysum bracteatum
11 – 25 Mar
24 Apr
6-8 wk
6 May
5 Jun
3 wk after
27 Jun
11 wk after
Purple-top vervain
Verbena bonariensis
24 Jan – 21 Feb
21 Apr
8-12 wk
18 Apr
16 Jun
1 wk after
Cardoon
Cynara cardunculus
11 Feb – 11 Mar
22 Mar
8-12 wk
6 May
17 May
3 wk after
Regal-foxtail
Ptilotus nobilis
Fleece
11 Feb – 11 Mar
15 Apr
8-12 wk
6 May
10 Jun
3 wk after
Globe amaranth
Gomphrena globosa
Fleece
11 – 25 Mar
29 Apr
6-8 wk
6 May
10 Jun
3 wk after
Corn poppy
Papaver rhoeas
14 Apr
16 Jul
0 wk
18 Apr
6 Jul
1 wk after
Snapdragon
Antirrhinum majus
20 Jan – 17 Feb
11 May
8-12 wk
14 Apr
6 Jul
0 wk
30 Apr
26 Jun
2 wk after
Flossflower
Ageratum houstonianum
18 Mar – 1 Apr
30 Apr
8-10 wk
27 May
25 Jun
6 wk after
Sweet pea
Lathyrus odoratus
17 Feb – 10 Mar
1 Jun
5-8 wk
14 Apr
6 Jul
0 wk
Stock
Matthiola incana
17 Feb – 3 Mar
4 Jun
6-8 wk
14 Apr
16 Jul
0 wk
5 May
6 Jul
3 wk after
Wormwood
Artemisia absinthium
17 Feb – 3 Mar
5 May
6-8 wk
14 Apr
16 Jun
0 wk
5 May
6 Jun
3 wk after
Mexican sunflower
Tithonia rotundifolia
Fleece
25 Mar – 8 Apr
8 May
4-6 wk
6 May
5 Jun
3 wk after
Garden pansy
Viola × wittrockiana
3 – 17 Feb
21 May
8-10 wk
14 Apr
16 Jul
0 wk
30 Apr
6 Jul
2 wk after
Petunia
Petunia
11 Feb – 11 Mar
20 Apr
8-12 wk
6 May
15 Jun
3 wk after
Sweet Scabious
Scabiosa atropurpurea
21 Feb – 7 Mar
5 May
6-8 wk
18 Apr
16 Jun
1 wk after
2 Jun
6 Jun
7 wk after
Common zinnia
Zinnia elegans
25 Mar – 8 Apr
23 May
4-6 wk
6 May
20 Jun
3 wk after
Common morning glory
Ipomoea purpurea
Fleece
1 – 15 Apr
30 May
3-5 wk
6 May
20 Jun
3 wk after
Garden cosmos
Cosmos bipinnatus
25 Mar – 8 Apr
19 May
4-6 wk
6 May
16 Jun
3 wk after
2 Jun
6 Jun
7 wk after
Scarlet milkweed
Asclepias curassavica
Fleece
4 Mar – 1 Apr
15 May
8-12 wk
27 May
10 Jul
6 wk after
Bee balm
Monarda didyma
20 Jan – 17 Feb
21 Apr
8-12 wk
14 Apr
16 Jun
0 wk
19 May
6 Jun
5 wk after
Yarrow
Achillea millefolium
17 Feb – 3 Mar
5 Apr
6-8 wk
14 Apr
17 May
0 wk
5 May
7 May
3 wk after
Safflower
Carthamus tinctorius
14 Apr
16 Jun
0 wk
18 Apr
6 Jun
1 wk after
Iceland poppy
Papaver nudicaule
Season too short
17 Feb – 3 Mar
25 May
6-8 wk
14 Apr
6 Jul
0 wk
27 Mar
26 Jun
3 wk before
Bishop's flower
Ammi majus
3 – 17 Mar
8 Jun
4-6 wk
14 Apr
6 Jul
0 wk
5 May
26 Jun
3 wk after
Drumsticks
Pycnosorus globosus
Fleece
11 – 25 Feb
18 Mar
10-12 wk
6 May
27 May
3 wk after
Sunflower
Helianthus annuus
8 – 15 Apr
15 Jun
3-4 wk
6 May
6 Jul
3 wk after
19 May
26 Jun
5 wk after
China aster
Callistephus chinensis
11 – 25 Mar
4 Jun
6-8 wk
6 May
16 Jul
3 wk after
2 Jun
6 Jul
7 wk after
Annual phlox
Phlox drummondii
7 – 21 Mar
14 May
6-8 wk
2 May
25 Jun
3 wk after
2 Jun
15 Jun
7 wk after
Hollyhock
Alcea rosea
17 Feb – 3 Mar
6-8 wk
14 Apr
0 wk
5 May
3 wk after
Alpine delphinium
Delphinium elatum
20 Jan – 17 Feb
21 Apr
8-12 wk
14 Apr
16 Jun
0 wk
19 May
6 Jun
5 wk after
African marigold
Tagetes erecta
11 – 25 Mar
14 May
6-8 wk
6 May
25 Jun
3 wk after
Black-eyed Susan
Rudbeckia hirta
21 Feb – 7 Mar
25 May
6-8 wk
18 Apr
6 Jul
1 wk after
2 Jun
26 Jun
7 wk after
Wood sage
Salvia nemorosa
3 – 17 Feb
11 Apr
8-10 wk
14 Apr
6 Jun
0 wk
19 May
27 May
5 wk after
Black-eyed susan vine
Thunbergia alata
Fleece
25 Feb – 25 Mar
9 May
6-10 wk
6 May
20 Jun
3 wk after
California goldenpoppy
Eschscholzia californica
14 Apr
16 Jul
0 wk
18 Apr
6 Jul
1 wk after
Painted tongue
Salpiglossis sinuata
25 Feb – 11 Mar
11 May
8-10 wk
6 May
6 Jul
3 wk after
Water forget-me-not
Myosotis scorpioides
17 Feb – 3 Mar
5 May
6-8 wk
14 Apr
16 Jun
0 wk
5 May
6 Jun
3 wk after