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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 119 days 13 May – 9 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
14 Jun
5-7 wk
13 May
19 Jul
0 wk
17 May
9 Jul
1 wk after
Broccoli
Brassica oleracea (Italica-gruppen)
1 – 15 Apr
26 Jun
4-6 wk
13 May
24 Jul
0 wk
17 May
14 Jul
1 wk after
Chili pepper
Capsicum annuum
Greenhouse
28 Feb – 28 Mar
25 Mar
8-12 wk
23 May
1 wk after
Curly Kale
Brassica oleracea (Curly Kale-gruppen)
25 Mar – 8 Apr
9 Jun
5-7 wk
13 May
14 Jul
0 wk
13 May
4 Jul
0 wk
Garden cucumber
Cucumis sativus
Fleece
5 – 12 May
19 May
3-4 wk
2 Jun
9 Jun
3 wk after
Florence Fennel
Foeniculum vulgare
14 – 21 May
14 May
4-5 wk
18 Jun
5 wk after
1 Jul
7 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
17 Mar
8-12 wk
13 May
0 wk
3 Jun
3 wk after
Onion (sets)
Allium cepa (Cepa-gruppen)
17 May
1 Jun
1 wk after
17 May
22 May
1 wk after
Maize
Zea mays
Fleece
25 Apr – 2 May
9 May
3-4 wk
23 May
30 May
1 wk after
Swiss Chard
Beta vulgaris (Flavescens-gruppen)
20 – 27 Apr
25 Jun
3-4 wk
18 May
16 Jul
1 wk after
3 Jun
6 Jul
3 wk after
Carrot
Daucus carota subsp. sativus var. sativus
13 May
4 Jul
0 wk
13 May
24 Jun
0 wk
Palm Kale
Brassica oleracea (Palm Kale-gruppen)
25 Mar – 8 Apr
9 Jun
5-7 wk
13 May
14 Jul
0 wk
13 May
4 Jul
0 wk
Potato
Solanum tuberosum
17 Apr – 1 May
16 May
4-6 wk
29 May
13 Jun
2 wk after
29 May
3 Jun
2 wk after
Ornamental Kale
Brassica oleracea (Ornamental-gruppen)
25 Mar – 8 Apr
19 Jun
5-7 wk
13 May
24 Jul
0 wk
17 May
14 Jul
1 wk after
Pumpkin
Cucurbita pepo
21 – 28 May
24 May
3-4 wk
18 Jun
5 wk after
Beetroot
Beta vulgaris (Conditiva-gruppen)
20 – 27 Apr
18 May
3-4 wk
18 May
8 Jun
1 wk after
3 Jun
3 wk after
Red Cabbage
Brassica oleracea (Red Cabbage-gruppen)
1 – 15 Apr
21 Jun
4-6 wk
13 May
19 Jul
0 wk
Lettuce
Lactuca sativa
15 – 22 Apr
8 Jul
3-4 wk
13 May
29 Jul
0 wk
17 May
19 Jul
1 wk after
Savoy Cabbage
Brassica oleracea (Savoy Cabbage-gruppen)
1 – 15 Apr
21 Jun
4-6 wk
13 May
19 Jul
0 wk
Shallot (bulbs)
Allium cepa (Aggregatum-gruppen)
15 – 29 Apr
22 May
2-4 wk
13 May
5 Jun
0 wk
13 May
26 May
0 wk
Shallot (sets)
Allium cepa (Aggregatum-gruppen)
17 May
1 Jun
1 wk after
17 May
22 May
1 wk after
Spinach
Spinacia oleracea
15 – 22 Apr
23 Jul
3-4 wk
13 May
13 Aug
0 wk
9 May
3 Aug
1 wk before
Sweet potato
Ipomoea batatas
14 – 28 Jun
4-6 wk
26 Jul
11 wk after
Garden tomato
Solanum lycopersicum
Fleece
28 Mar – 11 Apr
18 Apr
6-8 wk
23 May
30 May
1 wk after
Tomatillo
Physalis ixocarpa
Common Bean
Phaseolus vulgaris
5 – 19 May
26 May
2-4 wk
2 Jun
9 Jun
3 wk after
1 Jul
7 wk after
White Cabbage
Brassica oleracea (White Cabbage-gruppen)
1 – 15 Apr
21 Jun
4-6 wk
13 May
19 Jul
0 wk
Garden pea
Pisum sativum
15 – 22 Apr
23 Jun
3-4 wk
13 May
14 Jul
0 wk
17 May
4 Jul
1 wk after

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
24 May
4-6 wk
2 Jun
21 Jun
3 wk after
Lemon balm
Melissa officinalis
4 – 18 Mar
19 May
8-10 wk
13 May
14 Jul
0 wk
17 Jun
4 Jul
5 wk after
Dill
Anethum graveolens
17 May
16 Jul
1 wk after
Wild chives
Allium schoenoprasum
18 Mar – 1 Apr
2 Jun
6-8 wk
13 May
14 Jul
0 wk
17 May
4 Jul
1 wk after
Spearmint
Mentha spicata
18 Feb – 18 Mar
19 May
8-12 wk
13 May
14 Jul
0 wk
17 Jun
4 Jul
5 wk after
Coriander
Coriandrum sativum
13 May
5 Aug
0 wk
3 Jun
26 Jul
3 wk after
Garden sage
Salvia officinalis
9 – 23 Mar
4 May
8-10 wk
18 May
29 Jun
1 wk after
Common thyme
Thymus vulgaris
4 – 18 Mar
9 May
8-10 wk
13 May
4 Jul
0 wk
Oregano
Origanum vulgare
18 Mar – 1 Apr
23 May
6-8 wk
13 May
4 Jul
0 wk
17 Jun
24 Jun
5 wk after
Parsley
Petroselinum crispum
18 Mar – 1 Apr
23 May
6-8 wk
13 May
4 Jul
0 wk
17 May
24 Jun
1 wk after
Rosemary
Salvia rosmarinus
9 Feb – 9 Mar
23 Mar
10-14 wk
18 May
1 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
31 May
3-4 wk
2 Jun
21 Jun
3 wk after
Cornflower
Centaurea cyanus
13 May
14 Jul
0 wk
17 May
4 Jul
1 wk after
Statice
Limonium sinuatum
24 Mar – 7 Apr
21 Apr
8-10 wk
2 Jun
16 Jun
3 wk after
Sweet William
Dianthus barbatus
18 Mar – 1 Apr
6-8 wk
13 May
0 wk
29 May
2 wk after
Snow-on-the-mountain
Euphorbia marginata
7 – 21 Apr
5 May
6-8 wk
2 Jun
16 Jun
3 wk after
26 Jul
11 wk after
Pinnate dahlia
Dahlia × pinnata
31 Mar – 14 Apr
6 May
6-8 wk
26 May
17 Jun
2 wk after
Pinnate dahlia (tubers)
Dahlia × pinnata
22 Apr – 20 May
20 May
4-8 wk
17 Jun
17 Jun
5 wk after
17 Jun
5 wk after
Foxglove
Digitalis purpurea
4 – 18 Mar
8-10 wk
13 May
0 wk
3 Jun
3 wk after
Busy lizzie
Impatiens walleriana
26 Mar – 23 Apr
11 Jun
8-12 wk
18 Jun
6 Aug
5 wk after
Creeping zinnia
Sanvitalia procumbens
7 – 21 Apr
15 May
6-8 wk
2 Jun
26 Jun
3 wk after
Hyacinth bean
Dolichos lablab
Greenhouse
21 Apr – 5 May
24 Apr
4-6 wk
2 Jun
3 wk after
Chinese lantern
Physalis alkekengi
9 – 23 Mar
11 Apr
8-10 wk
18 May
6 Jun
1 wk after
Love in a mist
Nigella damascena
13 May
29 Jun
0 wk
17 May
19 Jun
1 wk after
Strawflower
Xerochrysum bracteatum
7 – 21 Apr
25 Apr
6-8 wk
2 Jun
6 Jun
3 wk after
26 Jul
11 wk after
Purple-top vervain
Verbena bonariensis
23 Feb – 23 Mar
11 Apr
8-12 wk
18 May
6 Jun
1 wk after
Cardoon
Cynara cardunculus
Fleece
28 Feb – 28 Mar
20 Mar
8-12 wk
23 May
1 wk after
Regal-foxtail
Ptilotus nobilis
Fleece
10 Mar – 7 Apr
16 Apr
8-12 wk
2 Jun
11 Jun
3 wk after
Globe amaranth
Gomphrena globosa
Fleece
7 – 21 Apr
30 Apr
6-8 wk
2 Jun
11 Jun
3 wk after
Corn poppy
Papaver rhoeas
13 May
14 Jul
0 wk
17 May
4 Jul
1 wk after
Snapdragon
Antirrhinum majus
18 Feb – 18 Mar
9 May
8-12 wk
13 May
4 Jul
0 wk
29 May
24 Jun
2 wk after
Flossflower
Ageratum houstonianum
9 – 23 Apr
1 May
8-10 wk
18 Jun
26 Jun
5 wk after
Sweet pea
Lathyrus odoratus
18 Mar – 8 Apr
30 May
5-8 wk
13 May
4 Jul
0 wk
Stock
Matthiola incana
18 Mar – 1 Apr
2 Jun
6-8 wk
13 May
14 Jul
0 wk
3 Jun
4 Jul
3 wk after
Wormwood
Artemisia absinthium
18 Mar – 1 Apr
3 May
6-8 wk
13 May
14 Jun
0 wk
3 Jun
4 Jun
3 wk after
Mexican sunflower
Tithonia rotundifolia
Fleece
21 Apr – 5 May
9 May
4-6 wk
2 Jun
6 Jun
3 wk after
Garden pansy
Viola × wittrockiana
4 – 18 Mar
19 May
8-10 wk
13 May
14 Jul
0 wk
29 May
4 Jul
2 wk after
Petunia
Petunia
10 Mar – 7 Apr
21 Apr
8-12 wk
2 Jun
16 Jun
3 wk after
Sweet Scabious
Scabiosa atropurpurea
23 Mar – 6 Apr
25 Apr
6-8 wk
18 May
6 Jun
1 wk after
1 Jul
7 wk after
Common zinnia
Zinnia elegans
21 Apr – 5 May
24 May
4-6 wk
2 Jun
21 Jun
3 wk after
Common morning glory
Ipomoea purpurea
Fleece
28 Apr – 12 May
31 May
3-5 wk
2 Jun
21 Jun
3 wk after
Garden cosmos
Cosmos bipinnatus
21 Apr – 5 May
20 May
4-6 wk
2 Jun
17 Jun
3 wk after
1 Jul
7 wk after
Scarlet milkweed
Asclepias curassavica
Fleece
26 Mar – 23 Apr
16 May
8-12 wk
18 Jun
11 Jul
5 wk after
Bee balm
Monarda didyma
18 Feb – 18 Mar
19 Apr
8-12 wk
13 May
14 Jun
0 wk
17 Jun
5 wk after
Yarrow
Achillea millefolium
18 Mar – 1 Apr
3 Apr
6-8 wk
13 May
15 May
0 wk
3 Jun
3 wk after
Safflower
Carthamus tinctorius
13 May
14 Jun
0 wk
17 May
4 Jun
1 wk after
Iceland poppy
Papaver nudicaule
Season too short
18 Mar – 1 Apr
23 May
6-8 wk
13 May
4 Jul
0 wk
25 Apr
24 Jun
3 wk before
Bishop's flower
Ammi majus
1 – 15 Apr
6 Jun
4-6 wk
13 May
4 Jul
0 wk
3 Jun
24 Jun
3 wk after
Drumsticks
Pycnosorus globosus
Fleece
10 – 24 Mar
19 Mar
10-12 wk
2 Jun
3 wk after
Sunflower
Helianthus annuus
5 – 12 May
31 May
3-4 wk
2 Jun
21 Jun
3 wk after
17 Jun
5 wk after
China aster
Callistephus chinensis
7 – 21 Apr
20 May
6-8 wk
2 Jun
1 Jul
3 wk after
1 Jul
7 wk after
Annual phlox
Phlox drummondii
28 Mar – 11 Apr
15 May
6-8 wk
23 May
26 Jun
1 wk after
1 Jul
7 wk after
Hollyhock
Alcea rosea
18 Mar – 1 Apr
6-8 wk
13 May
0 wk
3 Jun
3 wk after
Alpine delphinium
Delphinium elatum
18 Feb – 18 Mar
19 Apr
8-12 wk
13 May
14 Jun
0 wk
17 Jun
5 wk after
African marigold
Tagetes erecta
7 – 21 Apr
15 May
6-8 wk
2 Jun
26 Jun
3 wk after
Black-eyed Susan
Rudbeckia hirta
23 Mar – 6 Apr
10 May
6-8 wk
18 May
21 Jun
1 wk after
1 Jul
7 wk after
Wood sage
Salvia nemorosa
4 – 18 Mar
9 Apr
8-10 wk
13 May
4 Jun
0 wk
17 Jun
5 wk after
Black-eyed susan vine
Thunbergia alata
Fleece
24 Mar – 21 Apr
10 May
6-10 wk
2 Jun
21 Jun
3 wk after
California goldenpoppy
Eschscholzia californica
13 May
14 Jul
0 wk
17 May
4 Jul
1 wk after
Painted tongue
Salpiglossis sinuata
24 Mar – 7 Apr
16 Apr
8-10 wk
2 Jun
11 Jun
3 wk after
Water forget-me-not
Myosotis scorpioides
18 Mar – 1 Apr
3 May
6-8 wk
13 May
14 Jun
0 wk
3 Jun
4 Jun
3 wk after