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