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Method
Rel. frost
Last spring frost (0°C) 13 May Frost 3 of 4 years · 20 years of data
Frost-free season 129 days 13 May – 19 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)
25 Mar – 8 Apr
17 Jun
5-7 wk
13 May
22 Jul
0 wk
6 May
12 Jul
1 wk before
Broccoli
Brassica oleracea (Italica-gruppen)
1 – 15 Apr
29 Jun
4-6 wk
13 May
27 Jul
0 wk
6 May
17 Jul
1 wk before
Chili pepper
Capsicum annuum
Greenhouse
28 Feb – 28 Mar
29 Mar
8-12 wk
23 May
24 May
1 wk after
Curly Kale
Brassica oleracea (Curly Kale-gruppen)
25 Mar – 8 Apr
12 Jun
5-7 wk
13 May
17 Jul
0 wk
1 May
7 Jul
2 wk before
Garden cucumber
Cucumis sativus
Fleece
5 – 12 May
23 May
3-4 wk
2 Jun
13 Jun
3 wk after
Florence Fennel
Foeniculum vulgare
14 – 21 May
23 May
4-5 wk
18 Jun
20 Jun
5 wk after
18 Jun
5 wk after
Butter bean
Phaseolus lunatus
Season too short
26 May – 2 Jun
3-4 wk
23 Jun
6 wk after
Onion
Allium cepa (Cepa-gruppen)
18 Feb – 18 Mar
21 Mar
8-12 wk
13 May
16 May
0 wk
23 May
1 wk after
Onion (sets)
Allium cepa (Cepa-gruppen)
6 May
5 Jun
1 wk before
6 May
26 May
1 wk before
Maize
Zea mays
Fleece
25 Apr – 2 May
13 May
3-4 wk
23 May
3 Jun
1 wk after
Swiss Chard
Beta vulgaris (Flavescens-gruppen)
20 – 27 Apr
6 Jul
3-4 wk
18 May
27 Jul
1 wk after
23 May
17 Jul
1 wk after
Carrot
Daucus carota subsp. sativus var. sativus
13 May
7 Jul
0 wk
1 May
27 Jun
2 wk before
Palm Kale
Brassica oleracea (Palm Kale-gruppen)
25 Mar – 8 Apr
12 Jun
5-7 wk
13 May
17 Jul
0 wk
1 May
7 Jul
2 wk before
Potato
Solanum tuberosum
6 – 20 Apr
22 May
4-6 wk
18 May
19 Jun
1 wk after
18 May
9 Jun
1 wk after
Ornamental Kale
Brassica oleracea (Ornamental-gruppen)
25 Mar – 8 Apr
22 Jun
5-7 wk
13 May
27 Jul
0 wk
6 May
17 Jul
1 wk before
Pumpkin
Cucurbita pepo
21 – 28 May
28 May
3-4 wk
18 Jun
18 Jun
5 wk after
Beetroot
Beta vulgaris (Conditiva-gruppen)
20 – 27 Apr
30 May
3-4 wk
18 May
20 Jun
1 wk after
23 May
10 Jun
1 wk after
Red Cabbage
Brassica oleracea (Red Cabbage-gruppen)
1 – 15 Apr
24 Jun
4-6 wk
13 May
22 Jul
0 wk
Lettuce
Lactuca sativa
15 – 22 Apr
11 Jul
3-4 wk
13 May
1 Aug
0 wk
6 May
22 Jul
1 wk before
Savoy Cabbage
Brassica oleracea (Savoy Cabbage-gruppen)
1 – 15 Apr
24 Jun
4-6 wk
13 May
22 Jul
0 wk
Shallot (bulbs)
Allium cepa (Aggregatum-gruppen)
3 – 17 Apr
31 May
2-4 wk
1 May
14 Jun
2 wk before
1 May
4 Jun
2 wk before
Shallot (sets)
Allium cepa (Aggregatum-gruppen)
6 May
5 Jun
1 wk before
6 May
26 May
1 wk before
Spinach
Spinacia oleracea
15 – 22 Apr
26 Jul
3-4 wk
13 May
16 Aug
0 wk
25 Apr
6 Aug
3 wk before
Sweet potato
Ipomoea batatas
9 – 23 Jun
4-6 wk
21 Jul
10 wk after
Garden tomato
Solanum lycopersicum
Fleece
28 Mar – 11 Apr
22 Apr
6-8 wk
23 May
3 Jun
1 wk after
Tomatillo
Physalis ixocarpa
Common Bean
Phaseolus vulgaris
5 – 19 May
30 May
2-4 wk
2 Jun
13 Jun
3 wk after
18 Jun
5 wk after
White Cabbage
Brassica oleracea (White Cabbage-gruppen)
1 – 15 Apr
24 Jun
4-6 wk
13 May
22 Jul
0 wk
Garden pea
Pisum sativum
15 – 22 Apr
26 Jun
3-4 wk
13 May
17 Jul
0 wk
6 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
21 Apr – 5 May
25 May
4-6 wk
2 Jun
22 Jun
3 wk after
Lemon balm
Melissa officinalis
4 – 18 Mar
22 May
8-10 wk
13 May
17 Jul
0 wk
3 Jun
7 Jul
3 wk after
Dill
Anethum graveolens
6 May
27 Jul
1 wk before
Wild chives
Allium schoenoprasum
18 Mar – 1 Apr
5 Jun
6-8 wk
13 May
17 Jul
0 wk
6 May
7 Jul
1 wk before
Spearmint
Mentha spicata
18 Feb – 18 Mar
22 May
8-12 wk
13 May
17 Jul
0 wk
3 Jun
7 Jul
3 wk after
Coriander
Coriandrum sativum
13 May
16 Aug
0 wk
23 May
6 Aug
1 wk after
Garden sage
Salvia officinalis
9 – 23 Mar
7 May
8-10 wk
18 May
2 Jul
1 wk after
Common thyme
Thymus vulgaris
4 – 18 Mar
12 May
8-10 wk
13 May
7 Jul
0 wk
Oregano
Origanum vulgare
18 Mar – 1 Apr
26 May
6-8 wk
13 May
7 Jul
0 wk
3 Jun
27 Jun
3 wk after
Parsley
Petroselinum crispum
18 Mar – 1 Apr
26 May
6-8 wk
13 May
7 Jul
0 wk
6 May
27 Jun
1 wk before
Rosemary
Salvia rosmarinus
9 Feb – 9 Mar
26 Mar
10-14 wk
18 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
5 – 12 May
1 Jun
3-4 wk
2 Jun
22 Jun
3 wk after
Cornflower
Centaurea cyanus
13 May
17 Jul
0 wk
6 May
7 Jul
1 wk before
Statice
Limonium sinuatum
24 Mar – 7 Apr
22 Apr
8-10 wk
2 Jun
17 Jun
3 wk after
Sweet William
Dianthus barbatus
18 Mar – 1 Apr
6-8 wk
13 May
0 wk
18 May
1 wk after
Snow-on-the-mountain
Euphorbia marginata
7 – 21 Apr
6 May
6-8 wk
2 Jun
17 Jun
3 wk after
21 Jul
10 wk after
Pinnate dahlia
Dahlia × pinnata
31 Mar – 14 Apr
11 May
6-8 wk
26 May
22 Jun
2 wk after
Pinnate dahlia (tubers)
Dahlia × pinnata
8 Apr – 6 May
25 May
4-8 wk
3 Jun
22 Jun
3 wk after
3 Jun
12 Jun
3 wk after
Foxglove
Digitalis purpurea
4 – 18 Mar
8-10 wk
13 May
0 wk
23 May
1 wk after
Busy lizzie
Impatiens walleriana
26 Mar – 23 Apr
12 Jun
8-12 wk
18 Jun
7 Aug
5 wk after
Creeping zinnia
Sanvitalia procumbens
7 – 21 Apr
16 May
6-8 wk
2 Jun
27 Jun
3 wk after
Hyacinth bean
Dolichos lablab
Season too short
21 Apr – 5 May
25 Apr
4-6 wk
2 Jun
3 wk after
Chinese lantern
Physalis alkekengi
9 – 23 Mar
22 Apr
8-10 wk
18 May
17 Jun
1 wk after
Love in a mist
Nigella damascena
13 May
2 Jul
0 wk
6 May
22 Jun
1 wk before
Strawflower
Xerochrysum bracteatum
7 – 21 Apr
26 Apr
6-8 wk
2 Jun
7 Jun
3 wk after
21 Jul
10 wk after
Purple-top vervain
Verbena bonariensis
23 Feb – 23 Mar
22 Apr
8-12 wk
18 May
17 Jun
1 wk after
Cardoon
Cynara cardunculus
Fleece
28 Feb – 28 Mar
23 Mar
8-12 wk
23 May
1 wk after
Regal-foxtail
Ptilotus nobilis
Fleece
10 Mar – 7 Apr
17 Apr
8-12 wk
2 Jun
12 Jun
3 wk after
Globe amaranth
Gomphrena globosa
Fleece
7 – 21 Apr
1 May
6-8 wk
2 Jun
12 Jun
3 wk after
Corn poppy
Papaver rhoeas
13 May
17 Jul
0 wk
6 May
7 Jul
1 wk before
Snapdragon
Antirrhinum majus
18 Feb – 18 Mar
12 May
8-12 wk
13 May
7 Jul
0 wk
18 May
27 Jun
1 wk after
Flossflower
Ageratum houstonianum
9 – 23 Apr
2 May
8-10 wk
18 Jun
27 Jun
5 wk after
Sweet pea
Lathyrus odoratus
18 Mar – 8 Apr
2 Jun
5-8 wk
13 May
7 Jul
0 wk
Stock
Matthiola incana
18 Mar – 1 Apr
5 Jun
6-8 wk
13 May
17 Jul
0 wk
23 May
7 Jul
1 wk after
Wormwood
Artemisia absinthium
18 Mar – 1 Apr
6 May
6-8 wk
13 May
17 Jun
0 wk
23 May
7 Jun
1 wk after
Mexican sunflower
Tithonia rotundifolia
Fleece
21 Apr – 5 May
10 May
4-6 wk
2 Jun
7 Jun
3 wk after
Garden pansy
Viola × wittrockiana
4 – 18 Mar
22 May
8-10 wk
13 May
17 Jul
0 wk
18 May
7 Jul
1 wk after
Petunia
Petunia
10 Mar – 7 Apr
22 Apr
8-12 wk
2 Jun
17 Jun
3 wk after
Sweet Scabious
Scabiosa atropurpurea
23 Mar – 6 Apr
6 May
6-8 wk
18 May
17 Jun
1 wk after
18 Jun
5 wk after
Common zinnia
Zinnia elegans
21 Apr – 5 May
25 May
4-6 wk
2 Jun
22 Jun
3 wk after
Common morning glory
Ipomoea purpurea
Fleece
28 Apr – 12 May
1 Jun
3-5 wk
2 Jun
22 Jun
3 wk after
Garden cosmos
Cosmos bipinnatus
21 Apr – 5 May
25 May
4-6 wk
2 Jun
22 Jun
3 wk after
18 Jun
5 wk after
Scarlet milkweed
Asclepias curassavica
Fleece
26 Mar – 23 Apr
17 May
8-12 wk
18 Jun
12 Jul
5 wk after
Bee balm
Monarda didyma
18 Feb – 18 Mar
22 Apr
8-12 wk
13 May
17 Jun
0 wk
3 Jun
7 Jun
3 wk after
Yarrow
Achillea millefolium
18 Mar – 1 Apr
6 Apr
6-8 wk
13 May
18 May
0 wk
23 May
1 wk after
Safflower
Carthamus tinctorius
13 May
17 Jun
0 wk
6 May
7 Jun
1 wk before
Iceland poppy
Papaver nudicaule
Season too short
18 Mar – 1 Apr
26 May
6-8 wk
13 May
7 Jul
0 wk
4 Apr
27 Jun
6 wk before
Bishop's flower
Ammi majus
1 – 15 Apr
9 Jun
4-6 wk
13 May
7 Jul
0 wk
23 May
27 Jun
1 wk after
Drumsticks
Pycnosorus globosus
Fleece
10 – 24 Mar
24 Mar
10-12 wk
2 Jun
2 Jun
3 wk after
Sunflower
Helianthus annuus
5 – 12 May
3 Jun
3-4 wk
2 Jun
24 Jun
3 wk after
3 Jun
14 Jun
3 wk after
China aster
Callistephus chinensis
7 – 21 Apr
23 May
6-8 wk
2 Jun
4 Jul
3 wk after
18 Jun
24 Jun
5 wk after
Annual phlox
Phlox drummondii
28 Mar – 11 Apr
16 May
6-8 wk
23 May
27 Jun
1 wk after
18 Jun
5 wk after
Hollyhock
Alcea rosea
18 Mar – 1 Apr
6-8 wk
13 May
0 wk
23 May
1 wk after
Alpine delphinium
Delphinium elatum
18 Feb – 18 Mar
22 Apr
8-12 wk
13 May
17 Jun
0 wk
3 Jun
7 Jun
3 wk after
African marigold
Tagetes erecta
7 – 21 Apr
16 May
6-8 wk
2 Jun
27 Jun
3 wk after
Black-eyed Susan
Rudbeckia hirta
23 Mar – 6 Apr
13 May
6-8 wk
18 May
24 Jun
1 wk after
18 Jun
5 wk after
Wood sage
Salvia nemorosa
4 – 18 Mar
12 Apr
8-10 wk
13 May
7 Jun
0 wk
3 Jun
3 wk after
Black-eyed susan vine
Thunbergia alata
Fleece
24 Mar – 21 Apr
11 May
6-10 wk
2 Jun
22 Jun
3 wk after
California goldenpoppy
Eschscholzia californica
13 May
17 Jul
0 wk
6 May
7 Jul
1 wk before
Painted tongue
Salpiglossis sinuata
24 Mar – 7 Apr
25 Apr
8-10 wk
2 Jun
20 Jun
3 wk after
Water forget-me-not
Myosotis scorpioides
18 Mar – 1 Apr
6 May
6-8 wk
13 May
17 Jun
0 wk
23 May
7 Jun
1 wk after