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Method
Rel. frost
Last spring frost (0°C) 17 May Frost 3 of 4 years · 20 years of data
Frost-free season 123 days 17 May – 17 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)
29 Mar – 12 Apr
17 Jun
5-7 wk
17 May
22 Jul
0 wk
10 May
12 Jul
1 wk before
Broccoli
Brassica oleracea (Italica-gruppen)
5 – 19 Apr
29 Jun
4-6 wk
17 May
27 Jul
0 wk
10 May
17 Jul
1 wk before
Chili pepper
Capsicum annuum
Season too short
28 Feb – 28 Mar
12 Mar
8-12 wk
23 May
1 wk after
Curly Kale
Brassica oleracea (Curly Kale-gruppen)
29 Mar – 12 Apr
12 Jun
5-7 wk
17 May
17 Jul
0 wk
5 May
7 Jul
2 wk before
Garden cucumber
Cucumis sativus
Greenhouse
25 Apr – 2 May
7 Jun
3-4 wk
23 May
28 Jun
1 wk after
Florence Fennel
Foeniculum vulgare
Fleece
25 Apr – 2 May
3 Jun
4-5 wk
30 May
1 Jul
2 wk after
7 Jun
21 Jun
3 wk after
Butter bean
Phaseolus lunatus
Season too short
28 May – 4 Jun
3-4 wk
25 Jun
6 wk after
Onion
Allium cepa (Cepa-gruppen)
Fleece
22 Feb – 22 Mar
17 Mar
8-12 wk
17 May
0 wk
16 May
0 wk
Onion (sets)
Allium cepa (Cepa-gruppen)
10 May
21 May
1 wk before
10 May
11 May
1 wk before
Maize
Zea mays
Greenhouse
19 – 26 Apr
28 May
3-4 wk
17 May
18 Jun
0 wk
Swiss Chard
Beta vulgaris (Flavescens-gruppen)
21 – 28 Apr
30 Jun
3-4 wk
19 May
21 Jul
0 wk
27 May
11 Jul
1 wk after
Carrot
Daucus carota subsp. sativus var. sativus
17 May
7 Jul
0 wk
5 May
27 Jun
2 wk before
Palm Kale
Brassica oleracea (Palm Kale-gruppen)
29 Mar – 12 Apr
12 Jun
5-7 wk
17 May
17 Jul
0 wk
5 May
7 Jul
2 wk before
Potato
Solanum tuberosum
Fleece
29 Mar – 12 Apr
13 May
4-6 wk
10 May
10 Jun
1 wk before
10 May
31 May
1 wk before
Ornamental Kale
Brassica oleracea (Ornamental-gruppen)
29 Mar – 12 Apr
22 Jun
5-7 wk
17 May
27 Jul
0 wk
10 May
17 Jul
1 wk before
Pumpkin
Cucurbita pepo
Fleece
2 – 9 May
12 Jun
3-4 wk
30 May
3 Jul
2 wk after
Beetroot
Beta vulgaris (Conditiva-gruppen)
Fleece
19 – 26 Apr
7 May
3-4 wk
17 May
28 May
0 wk
16 May
18 May
0 wk
Red Cabbage
Brassica oleracea (Red Cabbage-gruppen)
5 – 19 Apr
24 Jun
4-6 wk
17 May
22 Jul
0 wk
Lettuce
Lactuca sativa
19 – 26 Apr
11 Jul
3-4 wk
17 May
1 Aug
0 wk
10 May
22 Jul
1 wk before
Savoy Cabbage
Brassica oleracea (Savoy Cabbage-gruppen)
5 – 19 Apr
24 Jun
4-6 wk
17 May
22 Jul
0 wk
Shallot (bulbs)
Allium cepa (Aggregatum-gruppen)
7 – 21 Apr
7 May
2-4 wk
5 May
21 May
2 wk before
5 May
11 May
2 wk before
Shallot (sets)
Allium cepa (Aggregatum-gruppen)
10 May
21 May
1 wk before
10 May
11 May
1 wk before
Spinach
Spinacia oleracea
19 – 26 Apr
26 Jul
3-4 wk
17 May
16 Aug
0 wk
29 Apr
6 Aug
3 wk before
Sweet potato
Ipomoea batatas
13 – 27 Jun
4-6 wk
25 Jul
10 wk after
Garden tomato
Solanum lycopersicum
Greenhouse
22 Mar – 5 Apr
7 May
6-8 wk
17 May
18 Jun
0 wk
Tomatillo
Physalis ixocarpa
Common Bean
Phaseolus vulgaris
Fleece
25 Apr – 9 May
14 Jun
2-4 wk
23 May
28 Jun
1 wk after
7 Jun
18 Jun
3 wk after
White Cabbage
Brassica oleracea (White Cabbage-gruppen)
5 – 19 Apr
24 Jun
4-6 wk
17 May
22 Jul
0 wk
Garden pea
Pisum sativum
19 – 26 Apr
26 Jun
3-4 wk
17 May
17 Jul
0 wk
10 May
7 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
18 Apr – 2 May
21 May
4-6 wk
30 May
18 Jun
2 wk after
Lemon balm
Melissa officinalis
8 – 22 Mar
22 May
8-10 wk
17 May
17 Jul
0 wk
7 Jun
7 Jul
3 wk after
Dill
Anethum graveolens
10 May
21 Jul
1 wk before
Wild chives
Allium schoenoprasum
22 Mar – 5 Apr
5 Jun
6-8 wk
17 May
17 Jul
0 wk
10 May
7 Jul
1 wk before
Spearmint
Mentha spicata
22 Feb – 22 Mar
22 May
8-12 wk
17 May
17 Jul
0 wk
7 Jun
7 Jul
3 wk after
Coriander
Coriandrum sativum
17 May
10 Aug
0 wk
27 May
31 Jul
1 wk after
Garden sage
Salvia officinalis
10 – 24 Mar
7 May
8-10 wk
19 May
2 Jul
0 wk
Common thyme
Thymus vulgaris
8 – 22 Mar
12 May
8-10 wk
17 May
7 Jul
0 wk
Oregano
Origanum vulgare
22 Mar – 5 Apr
26 May
6-8 wk
17 May
7 Jul
0 wk
7 Jun
27 Jun
3 wk after
Parsley
Petroselinum crispum
22 Mar – 5 Apr
26 May
6-8 wk
17 May
7 Jul
0 wk
10 May
27 Jun
1 wk before
Rosemary
Salvia rosmarinus
10 Feb – 10 Mar
28 Mar
10-14 wk
19 May
6 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
2 – 9 May
28 May
3-4 wk
30 May
18 Jun
2 wk after
Cornflower
Centaurea cyanus
17 May
17 Jul
0 wk
10 May
7 Jul
1 wk before
Statice
Limonium sinuatum
21 Mar – 4 Apr
17 Apr
8-10 wk
30 May
12 Jun
2 wk after
Sweet William
Dianthus barbatus
22 Mar – 5 Apr
6-8 wk
17 May
0 wk
22 May
1 wk after
Snow-on-the-mountain
Euphorbia marginata
4 – 18 Apr
1 May
6-8 wk
30 May
12 Jun
2 wk after
25 Jul
10 wk after
Pinnate dahlia
Dahlia × pinnata
2 – 16 Apr
9 May
6-8 wk
28 May
20 Jun
2 wk after
Pinnate dahlia (tubers)
Dahlia × pinnata
Fleece
1 – 29 Apr
4 Jun
4-8 wk
27 May
2 Jul
1 wk after
27 May
22 Jun
1 wk after
Foxglove
Digitalis purpurea
8 – 22 Mar
8-10 wk
17 May
0 wk
27 May
1 wk after
Busy lizzie
Impatiens walleriana
26 Mar – 23 Apr
8 Jun
8-12 wk
18 Jun
3 Aug
5 wk after
Creeping zinnia
Sanvitalia procumbens
4 – 18 Apr
11 May
6-8 wk
30 May
22 Jun
2 wk after
Hyacinth bean
Dolichos lablab
Season too short
18 Apr – 2 May
21 Apr
4-6 wk
30 May
2 wk after
Chinese lantern
Physalis alkekengi
10 – 24 Mar
16 Apr
8-10 wk
19 May
11 Jun
0 wk
Love in a mist
Nigella damascena
17 May
2 Jul
0 wk
10 May
22 Jun
1 wk before
Strawflower
Xerochrysum bracteatum
Fleece
28 Mar – 11 Apr
4 May
6-8 wk
23 May
15 Jun
1 wk after
2 Jul
7 wk after
Purple-top vervain
Verbena bonariensis
24 Feb – 24 Mar
16 Apr
8-12 wk
19 May
11 Jun
0 wk
Cardoon
Cynara cardunculus
Greenhouse
22 Feb – 22 Mar
23 Mar
8-12 wk
17 May
18 May
0 wk
Regal-foxtail
Ptilotus nobilis
Greenhouse
28 Feb – 28 Mar
25 Apr
8-12 wk
23 May
20 Jun
1 wk after
Globe amaranth
Gomphrena globosa
Greenhouse
28 Mar – 11 Apr
9 May
6-8 wk
23 May
20 Jun
1 wk after
Corn poppy
Papaver rhoeas
17 May
17 Jul
0 wk
10 May
7 Jul
1 wk before
Snapdragon
Antirrhinum majus
22 Feb – 22 Mar
12 May
8-12 wk
17 May
7 Jul
0 wk
22 May
27 Jun
1 wk after
Flossflower
Ageratum houstonianum
Fleece
21 Mar – 4 Apr
10 May
8-10 wk
30 May
5 Jul
2 wk after
Sweet pea
Lathyrus odoratus
22 Mar – 12 Apr
2 Jun
5-8 wk
17 May
7 Jul
0 wk
Stock
Matthiola incana
22 Mar – 5 Apr
5 Jun
6-8 wk
17 May
17 Jul
0 wk
27 May
7 Jul
1 wk after
Wormwood
Artemisia absinthium
22 Mar – 5 Apr
6 May
6-8 wk
17 May
17 Jun
0 wk
27 May
7 Jun
1 wk after
Mexican sunflower
Tithonia rotundifolia
Greenhouse
11 – 25 Apr
18 May
4-6 wk
23 May
15 Jun
1 wk after
Garden pansy
Viola × wittrockiana
8 – 22 Mar
22 May
8-10 wk
17 May
17 Jul
0 wk
22 May
7 Jul
1 wk after
Petunia
Petunia
7 Mar – 4 Apr
17 Apr
8-12 wk
30 May
12 Jun
2 wk after
Sweet Scabious
Scabiosa atropurpurea
24 Mar – 7 Apr
30 Apr
6-8 wk
19 May
11 Jun
0 wk
22 Jun
5 wk after
Common zinnia
Zinnia elegans
18 Apr – 2 May
21 May
4-6 wk
30 May
18 Jun
2 wk after
Common morning glory
Ipomoea purpurea
Fleece
25 Apr – 9 May
28 May
3-5 wk
30 May
18 Jun
2 wk after
Garden cosmos
Cosmos bipinnatus
18 Apr – 2 May
23 May
4-6 wk
30 May
20 Jun
2 wk after
22 Jun
5 wk after
Scarlet milkweed
Asclepias curassavica
Greenhouse
7 Mar – 4 Apr
25 May
8-12 wk
30 May
20 Jul
2 wk after
Bee balm
Monarda didyma
22 Feb – 22 Mar
22 Apr
8-12 wk
17 May
17 Jun
0 wk
7 Jun
7 Jun
3 wk after
Yarrow
Achillea millefolium
22 Mar – 5 Apr
6 Apr
6-8 wk
17 May
18 May
0 wk
27 May
1 wk after
Safflower
Carthamus tinctorius
17 May
17 Jun
0 wk
10 May
7 Jun
1 wk before
Iceland poppy
Papaver nudicaule
Season too short
22 Mar – 5 Apr
26 May
6-8 wk
17 May
7 Jul
0 wk
8 Apr
27 Jun
6 wk before
Bishop's flower
Ammi majus
5 – 19 Apr
9 Jun
4-6 wk
17 May
7 Jul
0 wk
27 May
27 Jun
1 wk after
Drumsticks
Pycnosorus globosus
Greenhouse
28 Feb – 14 Mar
3 Apr
10-12 wk
23 May
12 Jun
1 wk after
Sunflower
Helianthus annuus
2 – 9 May
5 Jun
3-4 wk
30 May
26 Jun
2 wk after
7 Jun
16 Jun
3 wk after
China aster
Callistephus chinensis
4 – 18 Apr
25 May
6-8 wk
30 May
6 Jul
2 wk after
22 Jun
26 Jun
5 wk after
Annual phlox
Phlox drummondii
28 Mar – 11 Apr
11 May
6-8 wk
23 May
22 Jun
1 wk after
22 Jun
5 wk after
Hollyhock
Alcea rosea
22 Mar – 5 Apr
6-8 wk
17 May
0 wk
27 May
1 wk after
Alpine delphinium
Delphinium elatum
22 Feb – 22 Mar
22 Apr
8-12 wk
17 May
17 Jun
0 wk
7 Jun
7 Jun
3 wk after
African marigold
Tagetes erecta
4 – 18 Apr
11 May
6-8 wk
30 May
22 Jun
2 wk after
Black-eyed Susan
Rudbeckia hirta
24 Mar – 7 Apr
15 May
6-8 wk
19 May
26 Jun
0 wk
22 Jun
5 wk after
Wood sage
Salvia nemorosa
8 – 22 Mar
12 Apr
8-10 wk
17 May
7 Jun
0 wk
7 Jun
3 wk after
Black-eyed susan vine
Thunbergia alata
Fleece
21 Mar – 18 Apr
7 May
6-10 wk
30 May
18 Jun
2 wk after
California goldenpoppy
Eschscholzia californica
17 May
15 Jul
0 wk
10 May
5 Jul
1 wk before
Painted tongue
Salpiglossis sinuata
21 Mar – 4 Apr
20 Apr
8-10 wk
30 May
15 Jun
2 wk after
Water forget-me-not
Myosotis scorpioides
22 Mar – 5 Apr
6 May
6-8 wk
17 May
17 Jun
0 wk
27 May
7 Jun
1 wk after