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Method
Rel. frost
Last spring frost (0°C) 25 May Frost 1 of 10 years · 20 years of data
Frost-free season 145 days 25 May – 17 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)
6 – 20 Apr
13 Jun
5-7 wk
25 May
18 Jul
0 wk
26 May
8 Jul
0 wk
Broccoli
Brassica oleracea (Italica-gruppen)
13 – 27 Apr
25 Jun
4-6 wk
25 May
23 Jul
0 wk
26 May
13 Jul
0 wk
Chili pepper
Capsicum annuum
Season too short
13 Mar – 10 Apr
8-12 wk
5 Jun
2 wk after
Curly Kale
Brassica oleracea (Curly Kale-gruppen)
6 – 20 Apr
8 Jun
5-7 wk
25 May
13 Jul
0 wk
25 May
3 Jul
0 wk
Garden cucumber
Cucumis sativus
Greenhouse
8 – 15 May
6 Jun
3-4 wk
5 Jun
27 Jun
2 wk after
Florence Fennel
Foeniculum vulgare
24 – 31 May
5 Jun
4-5 wk
28 Jun
3 Jul
5 wk after
7 Jul
6 wk after
Butter bean
Phaseolus lunatus
Season too short
7 – 14 Jun
3-4 wk
5 Jul
6 wk after
Onion
Allium cepa (Cepa-gruppen)
2 – 30 Mar
29 Mar
8-12 wk
25 May
0 wk
7 Jun
2 wk after
Onion (sets)
Allium cepa (Cepa-gruppen)
26 May
13 Jun
0 wk
26 May
3 Jun
0 wk
Maize
Zea mays
Greenhouse
1 – 8 May
27 May
3-4 wk
29 May
17 Jun
1 wk after
Swiss Chard
Beta vulgaris (Flavescens-gruppen)
3 – 10 May
2 Jul
3-4 wk
31 May
23 Jul
1 wk after
7 Jun
13 Jul
2 wk after
Carrot
Daucus carota subsp. sativus var. sativus
25 May
3 Jul
0 wk
25 May
23 Jun
0 wk
Palm Kale
Brassica oleracea (Palm Kale-gruppen)
6 – 20 Apr
8 Jun
5-7 wk
25 May
13 Jul
0 wk
25 May
3 Jul
0 wk
Potato
Solanum tuberosum
23 Apr – 7 May
5 Jun
4-6 wk
4 Jun
3 Jul
1 wk after
4 Jun
23 Jun
1 wk after
Ornamental Kale
Brassica oleracea (Ornamental-gruppen)
6 – 20 Apr
18 Jun
5-7 wk
25 May
23 Jul
0 wk
26 May
13 Jul
0 wk
Pumpkin
Cucurbita pepo
Fleece
17 – 24 May
11 Jun
3-4 wk
14 Jun
2 Jul
3 wk after
Beetroot
Beta vulgaris (Conditiva-gruppen)
3 – 10 May
21 Jun
3-4 wk
31 May
12 Jul
1 wk after
7 Jun
2 Jul
2 wk after
Red Cabbage
Brassica oleracea (Red Cabbage-gruppen)
13 – 27 Apr
20 Jun
4-6 wk
25 May
18 Jul
0 wk
Lettuce
Lactuca sativa
27 Apr – 4 May
7 Jul
3-4 wk
25 May
28 Jul
0 wk
26 May
18 Jul
0 wk
Savoy Cabbage
Brassica oleracea (Savoy Cabbage-gruppen)
13 – 27 Apr
20 Jun
4-6 wk
25 May
18 Jul
0 wk
Shallot (bulbs)
Allium cepa (Aggregatum-gruppen)
27 Apr – 11 May
30 May
2-4 wk
25 May
13 Jun
0 wk
25 May
3 Jun
0 wk
Shallot (sets)
Allium cepa (Aggregatum-gruppen)
26 May
13 Jun
0 wk
26 May
3 Jun
0 wk
Spinach
Spinacia oleracea
27 Apr – 4 May
22 Jul
3-4 wk
25 May
12 Aug
0 wk
22 May
2 Aug
0 wk
Sweet potato
Ipomoea batatas
19 Jun – 3 Jul
4-6 wk
31 Jul
10 wk after
Garden tomato
Solanum lycopersicum
Greenhouse
3 – 17 Apr
6 May
6-8 wk
29 May
17 Jun
1 wk after
Tomatillo
Physalis ixocarpa
Common Bean
Phaseolus vulgaris
Fleece
8 – 22 May
13 Jun
2-4 wk
5 Jun
27 Jun
2 wk after
19 Jun
4 wk after
White Cabbage
Brassica oleracea (White Cabbage-gruppen)
13 – 27 Apr
20 Jun
4-6 wk
25 May
18 Jul
0 wk
Garden pea
Pisum sativum
27 Apr – 4 May
22 Jun
3-4 wk
25 May
13 Jul
0 wk
26 May
3 Jul
0 wk

Herbs

Plant Sow indoors Transplant Direct sow
Earliest Latest Growing time Earliest Latest Rel. frost Earliest Latest Rel. frost
Basil
Ocimum basilicum
Fleece
3 – 17 May
20 May
4-6 wk
14 Jun
17 Jun
3 wk after
Lemon balm
Melissa officinalis
16 – 30 Mar
18 May
8-10 wk
25 May
13 Jul
0 wk
19 Jun
3 Jul
4 wk after
Dill
Anethum graveolens
26 May
23 Jul
0 wk
Wild chives
Allium schoenoprasum
30 Mar – 13 Apr
1 Jun
6-8 wk
25 May
13 Jul
0 wk
26 May
3 Jul
0 wk
Spearmint
Mentha spicata
2 – 30 Mar
18 May
8-12 wk
25 May
13 Jul
0 wk
19 Jun
3 Jul
4 wk after
Coriander
Coriandrum sativum
25 May
12 Aug
0 wk
7 Jun
2 Aug
2 wk after
Garden sage
Salvia officinalis
22 Mar – 5 Apr
3 May
8-10 wk
31 May
28 Jun
1 wk after
Common thyme
Thymus vulgaris
16 – 30 Mar
8 May
8-10 wk
25 May
3 Jul
0 wk
Oregano
Origanum vulgare
30 Mar – 13 Apr
22 May
6-8 wk
25 May
3 Jul
0 wk
19 Jun
23 Jun
4 wk after
Parsley
Petroselinum crispum
30 Mar – 13 Apr
22 May
6-8 wk
25 May
3 Jul
0 wk
26 May
23 Jun
0 wk
Rosemary
Salvia rosmarinus
22 Feb – 22 Mar
4 Apr
10-14 wk
31 May
13 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
17 – 24 May
27 May
3-4 wk
14 Jun
17 Jun
3 wk after
Cornflower
Centaurea cyanus
25 May
13 Jul
0 wk
26 May
3 Jul
0 wk
Statice
Limonium sinuatum
5 – 19 Apr
16 Apr
8-10 wk
14 Jun
3 wk after
Sweet William
Dianthus barbatus
30 Mar – 13 Apr
6-8 wk
25 May
0 wk
4 Jun
1 wk after
Snow-on-the-mountain
Euphorbia marginata
19 Apr – 3 May
30 Apr
6-8 wk
14 Jun
3 wk after
31 Jul
10 wk after
Pinnate dahlia
Dahlia × pinnata
14 – 28 Apr
1 May
6-8 wk
9 Jun
12 Jun
2 wk after
Pinnate dahlia (tubers)
Dahlia × pinnata
24 Apr – 22 May
15 May
4-8 wk
19 Jun
4 wk after
19 Jun
4 wk after
Foxglove
Digitalis purpurea
16 – 30 Mar
8-10 wk
25 May
0 wk
7 Jun
2 wk after
Busy lizzie
Impatiens walleriana
5 Apr – 3 May
7 Jun
8-12 wk
28 Jun
2 Aug
5 wk after
Creeping zinnia
Sanvitalia procumbens
19 Apr – 3 May
10 May
6-8 wk
14 Jun
21 Jun
3 wk after
Hyacinth bean
Dolichos lablab
Season too short
3 – 17 May
4-6 wk
14 Jun
3 wk after
Chinese lantern
Physalis alkekengi
22 Mar – 5 Apr
18 Apr
8-10 wk
31 May
13 Jun
1 wk after
Love in a mist
Nigella damascena
25 May
28 Jun
0 wk
26 May
18 Jun
0 wk
Strawflower
Xerochrysum bracteatum
19 Apr – 3 May
20 Apr
6-8 wk
14 Jun
3 wk after
31 Jul
10 wk after
Purple-top vervain
Verbena bonariensis
8 Mar – 5 Apr
18 Apr
8-12 wk
31 May
13 Jun
1 wk after
Cardoon
Cynara cardunculus
22 Mar – 19 Apr
8-12 wk
14 Jun
3 wk after
Regal-foxtail
Ptilotus nobilis
Fleece
22 Mar – 19 Apr
12 Apr
8-12 wk
14 Jun
3 wk after
Globe amaranth
Gomphrena globosa
Fleece
19 Apr – 3 May
26 Apr
6-8 wk
14 Jun
3 wk after
Corn poppy
Papaver rhoeas
25 May
13 Jul
0 wk
26 May
3 Jul
0 wk
Snapdragon
Antirrhinum majus
2 – 30 Mar
8 May
8-12 wk
25 May
3 Jul
0 wk
4 Jun
23 Jun
1 wk after
Flossflower
Ageratum houstonianum
19 Apr – 3 May
26 Apr
8-10 wk
28 Jun
5 wk after
Sweet pea
Lathyrus odoratus
30 Mar – 20 Apr
29 May
5-8 wk
25 May
3 Jul
0 wk
Stock
Matthiola incana
30 Mar – 13 Apr
1 Jun
6-8 wk
25 May
13 Jul
0 wk
7 Jun
3 Jul
2 wk after
Wormwood
Artemisia absinthium
30 Mar – 13 Apr
2 May
6-8 wk
25 May
13 Jun
0 wk
7 Jun
2 wk after
Mexican sunflower
Tithonia rotundifolia
Fleece
3 – 17 May
5 May
4-6 wk
14 Jun
3 wk after
Garden pansy
Viola × wittrockiana
16 – 30 Mar
18 May
8-10 wk
25 May
13 Jul
0 wk
4 Jun
3 Jul
1 wk after
Petunia
Petunia
22 Mar – 19 Apr
16 Apr
8-12 wk
14 Jun
3 wk after
Sweet Scabious
Scabiosa atropurpurea
5 – 19 Apr
2 May
6-8 wk
31 May
13 Jun
1 wk after
7 Jul
6 wk after
Common zinnia
Zinnia elegans
3 – 17 May
20 May
4-6 wk
14 Jun
17 Jun
3 wk after
Common morning glory
Ipomoea purpurea
Fleece
10 – 24 May
27 May
3-5 wk
14 Jun
17 Jun
3 wk after
Garden cosmos
Cosmos bipinnatus
3 – 17 May
15 May
4-6 wk
14 Jun
3 wk after
7 Jul
6 wk after
Scarlet milkweed
Asclepias curassavica
Fleece
5 Apr – 3 May
12 May
8-12 wk
28 Jun
7 Jul
5 wk after
Bee balm
Monarda didyma
2 – 30 Mar
18 Apr
8-12 wk
25 May
13 Jun
0 wk
19 Jun
4 wk after
Yarrow
Achillea millefolium
30 Mar – 13 Apr
2 Apr
6-8 wk
25 May
0 wk
7 Jun
2 wk after
Safflower
Carthamus tinctorius
25 May
13 Jun
0 wk
26 May
3 Jun
0 wk
Iceland poppy
Papaver nudicaule
Season too short
30 Mar – 13 Apr
22 May
6-8 wk
25 May
3 Jul
0 wk
9 May
23 Jun
2 wk before
Bishop's flower
Ammi majus
13 – 27 Apr
5 Jun
4-6 wk
25 May
3 Jul
0 wk
7 Jun
23 Jun
2 wk after
Drumsticks
Pycnosorus globosus
Greenhouse
13 – 27 Mar
24 Mar
10-12 wk
5 Jun
2 wk after
Sunflower
Helianthus annuus
17 – 24 May
12 Jun
3-4 wk
14 Jun
3 Jul
3 wk after
19 Jun
23 Jun
4 wk after
China aster
Callistephus chinensis
19 Apr – 3 May
1 Jun
6-8 wk
14 Jun
13 Jul
3 wk after
7 Jul
6 wk after
Annual phlox
Phlox drummondii
10 – 24 Apr
10 May
6-8 wk
5 Jun
21 Jun
2 wk after
7 Jul
6 wk after
Hollyhock
Alcea rosea
30 Mar – 13 Apr
6-8 wk
25 May
0 wk
7 Jun
2 wk after
Alpine delphinium
Delphinium elatum
2 – 30 Mar
18 Apr
8-12 wk
25 May
13 Jun
0 wk
19 Jun
4 wk after
African marigold
Tagetes erecta
19 Apr – 3 May
10 May
6-8 wk
14 Jun
21 Jun
3 wk after
Black-eyed Susan
Rudbeckia hirta
5 – 19 Apr
22 May
6-8 wk
31 May
3 Jul
1 wk after
7 Jul
6 wk after
Wood sage
Salvia nemorosa
16 – 30 Mar
8 Apr
8-10 wk
25 May
3 Jun
0 wk
19 Jun
4 wk after
Black-eyed susan vine
Thunbergia alata
Fleece
5 Apr – 3 May
6 May
6-10 wk
14 Jun
17 Jun
3 wk after
California goldenpoppy
Eschscholzia californica
25 May
13 Jul
0 wk
26 May
3 Jul
0 wk
Painted tongue
Salpiglossis sinuata
5 – 19 Apr
8 May
8-10 wk
14 Jun
3 Jul
3 wk after
Water forget-me-not
Myosotis scorpioides
30 Mar – 13 Apr
2 May
6-8 wk
25 May
13 Jun
0 wk
7 Jun
2 wk after