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Rel. frost
Last spring frost (0°C) 31 May Frost 1 of 10 years · 20 years of data
Frost-free season 150 days 31 May – 28 Oct
Probability that frost is over

90% = 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)
12 – 26 Apr
19 Jun
5-7 wk
31 May
24 Jul
0 wk
25 May
14 Jul
1 wk before
Broccoli
Brassica oleracea (Italica-gruppen)
19 Apr – 3 May
1 Jul
4-6 wk
31 May
29 Jul
0 wk
25 May
19 Jul
1 wk before
Chili pepper
Capsicum annuum
Greenhouse
26 Mar – 23 Apr
27 Mar
8-12 wk
18 Jun
3 wk after
Curly Kale
Brassica oleracea (Curly Kale-gruppen)
12 – 26 Apr
14 Jun
5-7 wk
31 May
19 Jul
0 wk
18 May
9 Jul
2 wk before
Garden cucumber
Cucumis sativus
Fleece
30 May – 6 Jun
3-4 wk
27 Jun
4 wk after
Florence Fennel
Foeniculum vulgare
6 – 13 Jun
11 Jun
4-5 wk
11 Jul
6 wk after
11 Jul
6 wk after
Butter bean
Phaseolus lunatus
Season too short
23 – 30 Jun
3-4 wk
21 Jul
7 wk after
Onion
Allium cepa (Cepa-gruppen)
8 Mar – 5 Apr
4 Apr
8-12 wk
31 May
0 wk
13 Jun
2 wk after
Onion (sets)
Allium cepa (Cepa-gruppen)
25 May
19 Jun
1 wk before
25 May
9 Jun
1 wk before
Maize
Zea mays
Fleece
21 – 28 May
3-4 wk
18 Jun
3 wk after
Swiss Chard
Beta vulgaris (Flavescens-gruppen)
3 – 10 May
8 Jul
3-4 wk
31 May
29 Jul
0 wk
13 Jun
19 Jul
2 wk after
Carrot
Daucus carota subsp. sativus var. sativus
31 May
9 Jul
0 wk
18 May
29 Jun
2 wk before
Palm Kale
Brassica oleracea (Palm Kale-gruppen)
12 – 26 Apr
14 Jun
5-7 wk
31 May
19 Jul
0 wk
18 May
9 Jul
2 wk before
Potato
Solanum tuberosum
24 Apr – 8 May
11 Jun
4-6 wk
5 Jun
9 Jul
1 wk after
5 Jun
29 Jun
1 wk after
Ornamental Kale
Brassica oleracea (Ornamental-gruppen)
12 – 26 Apr
24 Jun
5-7 wk
31 May
29 Jul
0 wk
25 May
19 Jul
1 wk before
Pumpkin
Cucurbita pepo
13 – 20 Jun
3-4 wk
11 Jul
6 wk after
Beetroot
Beta vulgaris (Conditiva-gruppen)
3 – 10 May
8 Jul
3-4 wk
31 May
29 Jul
0 wk
13 Jun
19 Jul
2 wk after
Red Cabbage
Brassica oleracea (Red Cabbage-gruppen)
19 Apr – 3 May
26 Jun
4-6 wk
31 May
24 Jul
0 wk
Lettuce
Lactuca sativa
3 – 10 May
13 Jul
3-4 wk
31 May
3 Aug
0 wk
25 May
24 Jul
1 wk before
Savoy Cabbage
Brassica oleracea (Savoy Cabbage-gruppen)
19 Apr – 3 May
26 Jun
4-6 wk
31 May
24 Jul
0 wk
Shallot (bulbs)
Allium cepa (Aggregatum-gruppen)
20 Apr – 4 May
5 Jun
2-4 wk
18 May
19 Jun
2 wk before
18 May
9 Jun
2 wk before
Shallot (sets)
Allium cepa (Aggregatum-gruppen)
25 May
19 Jun
1 wk before
25 May
9 Jun
1 wk before
Spinach
Spinacia oleracea
3 – 10 May
28 Jul
3-4 wk
31 May
18 Aug
0 wk
11 May
8 Aug
3 wk before
Sweet potato
Ipomoea batatas
2 – 16 Jul
4-6 wk
13 Aug
11 wk after
Garden tomato
Solanum lycopersicum
Fleece
23 Apr – 7 May
6-8 wk
18 Jun
3 wk after
Tomatillo
Physalis ixocarpa
Common Bean
Phaseolus vulgaris
30 May – 13 Jun
2-4 wk
27 Jun
4 wk after
11 Jul
6 wk after
White Cabbage
Brassica oleracea (White Cabbage-gruppen)
19 Apr – 3 May
26 Jun
4-6 wk
31 May
24 Jul
0 wk
Garden pea
Pisum sativum
3 – 10 May
28 Jun
3-4 wk
31 May
19 Jul
0 wk
25 May
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
16 – 30 May
20 May
4-6 wk
27 Jun
4 wk after
Lemon balm
Melissa officinalis
22 Mar – 5 Apr
24 May
8-10 wk
31 May
19 Jul
0 wk
26 Jun
9 Jul
4 wk after
Dill
Anethum graveolens
25 May
29 Jul
1 wk before
Wild chives
Allium schoenoprasum
5 – 19 Apr
7 Jun
6-8 wk
31 May
19 Jul
0 wk
25 May
9 Jul
1 wk before
Spearmint
Mentha spicata
8 Mar – 5 Apr
24 May
8-12 wk
31 May
19 Jul
0 wk
26 Jun
9 Jul
4 wk after
Coriander
Coriandrum sativum
31 May
18 Aug
0 wk
13 Jun
8 Aug
2 wk after
Garden sage
Salvia officinalis
22 Mar – 5 Apr
9 May
8-10 wk
31 May
4 Jul
0 wk
Common thyme
Thymus vulgaris
22 Mar – 5 Apr
14 May
8-10 wk
31 May
9 Jul
0 wk
Oregano
Origanum vulgare
5 – 19 Apr
28 May
6-8 wk
31 May
9 Jul
0 wk
26 Jun
29 Jun
4 wk after
Parsley
Petroselinum crispum
5 – 19 Apr
28 May
6-8 wk
31 May
9 Jul
0 wk
25 May
29 Jun
1 wk before
Rosemary
Salvia rosmarinus
22 Feb – 22 Mar
10 Apr
10-14 wk
31 May
19 Jun
0 wk

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