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Method
Rel. frost
Last spring frost (0°C) 12 May Frost 3 of 4 years · 20 years of data
Frost-free season 127 days 12 May – 16 Sep
Probability that frost is over

25% = Half of years are frost-free by this date. More about frost & season →

Custom date
Note: This location has a shorter growing season. Plants marked with Fleece, Greenhouse or Season too short need extra protection or are difficult to grow here.

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