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