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Method
Rel. frost
Last spring frost (0°C) 8 May Frost 3 of 4 years · 20 years of data
Frost-free season 133 days 8 May – 18 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)
20 Mar – 3 Apr
14 Jun
5-7 wk
8 May
19 Jul
0 wk
12 May
9 Jul
1 wk after
Broccoli
Brassica oleracea (Italica-gruppen)
27 Mar – 10 Apr
26 Jun
4-6 wk
8 May
24 Jul
0 wk
12 May
14 Jul
1 wk after
Chili pepper
Capsicum annuum
Greenhouse
23 Feb – 23 Mar
26 Mar
8-12 wk
18 May
21 May
1 wk after
Curly Kale
Brassica oleracea (Curly Kale-gruppen)
20 Mar – 3 Apr
9 Jun
5-7 wk
8 May
14 Jul
0 wk
8 May
4 Jul
0 wk
Garden cucumber
Cucumis sativus
Fleece
30 Apr – 7 May
20 May
3-4 wk
28 May
10 Jun
3 wk after
Florence Fennel
Foeniculum vulgare
9 – 16 May
22 May
4-5 wk
13 Jun
19 Jun
5 wk after
26 Jun
7 wk after
Butter bean
Phaseolus lunatus
Season too short
21 – 28 May
3-4 wk
18 Jun
6 wk after
Onion
Allium cepa (Cepa-gruppen)
13 Feb – 13 Mar
17 Mar
8-12 wk
8 May
12 May
0 wk
29 May
3 wk after
Onion (sets)
Allium cepa (Cepa-gruppen)
12 May
1 Jun
1 wk after
12 May
22 May
1 wk after
Maize
Zea mays
Fleece
20 – 27 Apr
10 May
3-4 wk
18 May
31 May
1 wk after
Swiss Chard
Beta vulgaris (Flavescens-gruppen)
15 – 22 Apr
3 Jul
3-4 wk
13 May
24 Jul
1 wk after
29 May
14 Jul
3 wk after
Carrot
Daucus carota subsp. sativus var. sativus
8 May
4 Jul
0 wk
8 May
24 Jun
0 wk
Palm Kale
Brassica oleracea (Palm Kale-gruppen)
20 Mar – 3 Apr
9 Jun
5-7 wk
8 May
14 Jul
0 wk
8 May
4 Jul
0 wk
Potato
Solanum tuberosum
12 – 26 Apr
14 May
4-6 wk
24 May
11 Jun
2 wk after
24 May
1 Jun
2 wk after
Ornamental Kale
Brassica oleracea (Ornamental-gruppen)
20 Mar – 3 Apr
19 Jun
5-7 wk
8 May
24 Jul
0 wk
12 May
14 Jul
1 wk after
Pumpkin
Cucurbita pepo
16 – 23 May
25 May
3-4 wk
13 Jun
15 Jun
5 wk after
Beetroot
Beta vulgaris (Conditiva-gruppen)
15 – 22 Apr
18 May
3-4 wk
13 May
8 Jun
1 wk after
29 May
29 May
3 wk after
Red Cabbage
Brassica oleracea (Red Cabbage-gruppen)
27 Mar – 10 Apr
21 Jun
4-6 wk
8 May
19 Jul
0 wk
Lettuce
Lactuca sativa
10 – 17 Apr
8 Jul
3-4 wk
8 May
29 Jul
0 wk
12 May
19 Jul
1 wk after
Savoy Cabbage
Brassica oleracea (Savoy Cabbage-gruppen)
27 Mar – 10 Apr
21 Jun
4-6 wk
8 May
19 Jul
0 wk
Shallot (bulbs)
Allium cepa (Aggregatum-gruppen)
10 – 24 Apr
20 May
2-4 wk
8 May
3 Jun
0 wk
8 May
24 May
0 wk
Shallot (sets)
Allium cepa (Aggregatum-gruppen)
12 May
1 Jun
1 wk after
12 May
22 May
1 wk after
Spinach
Spinacia oleracea
10 – 17 Apr
23 Jul
3-4 wk
8 May
13 Aug
0 wk
4 May
3 Aug
1 wk before
Sweet potato
Ipomoea batatas
9 – 23 Jun
4-6 wk
21 Jul
11 wk after
Garden tomato
Solanum lycopersicum
Fleece
23 Mar – 6 Apr
19 Apr
6-8 wk
18 May
31 May
1 wk after
Tomatillo
Physalis ixocarpa
Common Bean
Phaseolus vulgaris
30 Apr – 14 May
27 May
2-4 wk
28 May
10 Jun
3 wk after
26 Jun
7 wk after
White Cabbage
Brassica oleracea (White Cabbage-gruppen)
27 Mar – 10 Apr
21 Jun
4-6 wk
8 May
19 Jul
0 wk
Garden pea
Pisum sativum
10 – 17 Apr
23 Jun
3-4 wk
8 May
14 Jul
0 wk
12 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
16 – 30 Apr
23 May
4-6 wk
28 May
20 Jun
3 wk after
Lemon balm
Melissa officinalis
27 Feb – 13 Mar
19 May
8-10 wk
8 May
14 Jul
0 wk
12 Jun
4 Jul
5 wk after
Dill
Anethum graveolens
12 May
24 Jul
1 wk after
Wild chives
Allium schoenoprasum
13 – 27 Mar
2 Jun
6-8 wk
8 May
14 Jul
0 wk
12 May
4 Jul
1 wk after
Spearmint
Mentha spicata
13 Feb – 13 Mar
19 May
8-12 wk
8 May
14 Jul
0 wk
12 Jun
4 Jul
5 wk after
Coriander
Coriandrum sativum
8 May
13 Aug
0 wk
29 May
3 Aug
3 wk after
Garden sage
Salvia officinalis
4 – 18 Mar
4 May
8-10 wk
13 May
29 Jun
1 wk after
Common thyme
Thymus vulgaris
27 Feb – 13 Mar
9 May
8-10 wk
8 May
4 Jul
0 wk
Oregano
Origanum vulgare
13 – 27 Mar
23 May
6-8 wk
8 May
4 Jul
0 wk
12 Jun
24 Jun
5 wk after
Parsley
Petroselinum crispum
13 – 27 Mar
23 May
6-8 wk
8 May
4 Jul
0 wk
12 May
24 Jun
1 wk after
Rosemary
Salvia rosmarinus
4 Feb – 4 Mar
31 Mar
10-14 wk
13 May
9 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
30 Apr – 7 May
30 May
3-4 wk
28 May
20 Jun
3 wk after
Cornflower
Centaurea cyanus
8 May
14 Jul
0 wk
12 May
4 Jul
1 wk after
Statice
Limonium sinuatum
19 Mar – 2 Apr
21 Apr
8-10 wk
28 May
16 Jun
3 wk after
Sweet William
Dianthus barbatus
13 – 27 Mar
6-8 wk
8 May
0 wk
24 May
2 wk after
Snow-on-the-mountain
Euphorbia marginata
2 – 16 Apr
5 May
6-8 wk
28 May
16 Jun
3 wk after
21 Jul
11 wk after
Pinnate dahlia
Dahlia × pinnata
26 Mar – 9 Apr
6 May
6-8 wk
21 May
17 Jun
2 wk after
Pinnate dahlia (tubers)
Dahlia × pinnata
17 Apr – 15 May
20 May
4-8 wk
12 Jun
17 Jun
5 wk after
12 Jun
5 wk after
Foxglove
Digitalis purpurea
27 Feb – 13 Mar
8-10 wk
8 May
0 wk
29 May
3 wk after
Busy lizzie
Impatiens walleriana
21 Mar – 18 Apr
10 Jun
8-12 wk
13 Jun
5 Aug
5 wk after
Creeping zinnia
Sanvitalia procumbens
2 – 16 Apr
15 May
6-8 wk
28 May
26 Jun
3 wk after
Hyacinth bean
Dolichos lablab
Greenhouse
16 – 30 Apr
23 Apr
4-6 wk
28 May
3 wk after
Chinese lantern
Physalis alkekengi
4 – 18 Mar
19 Apr
8-10 wk
13 May
14 Jun
1 wk after
Love in a mist
Nigella damascena
8 May
29 Jun
0 wk
12 May
19 Jun
1 wk after
Strawflower
Xerochrysum bracteatum
2 – 16 Apr
25 Apr
6-8 wk
28 May
6 Jun
3 wk after
21 Jul
11 wk after
Purple-top vervain
Verbena bonariensis
18 Feb – 18 Mar
19 Apr
8-12 wk
13 May
14 Jun
1 wk after
Cardoon
Cynara cardunculus
Fleece
23 Feb – 23 Mar
20 Mar
8-12 wk
18 May
1 wk after
Regal-foxtail
Ptilotus nobilis
Fleece
5 Mar – 2 Apr
15 Apr
8-12 wk
28 May
10 Jun
3 wk after
Globe amaranth
Gomphrena globosa
Fleece
2 – 16 Apr
29 Apr
6-8 wk
28 May
10 Jun
3 wk after
Corn poppy
Papaver rhoeas
8 May
14 Jul
0 wk
12 May
4 Jul
1 wk after
Snapdragon
Antirrhinum majus
13 Feb – 13 Mar
9 May
8-12 wk
8 May
4 Jul
0 wk
24 May
24 Jun
2 wk after
Flossflower
Ageratum houstonianum
4 – 18 Apr
1 May
8-10 wk
13 Jun
26 Jun
5 wk after
Sweet pea
Lathyrus odoratus
13 Mar – 3 Apr
30 May
5-8 wk
8 May
4 Jul
0 wk
Stock
Matthiola incana
13 – 27 Mar
2 Jun
6-8 wk
8 May
14 Jul
0 wk
29 May
4 Jul
3 wk after
Wormwood
Artemisia absinthium
13 – 27 Mar
3 May
6-8 wk
8 May
14 Jun
0 wk
29 May
4 Jun
3 wk after
Mexican sunflower
Tithonia rotundifolia
Fleece
16 – 30 Apr
8 May
4-6 wk
28 May
5 Jun
3 wk after
Garden pansy
Viola × wittrockiana
27 Feb – 13 Mar
19 May
8-10 wk
8 May
14 Jul
0 wk
24 May
4 Jul
2 wk after
Petunia
Petunia
5 Mar – 2 Apr
21 Apr
8-12 wk
28 May
16 Jun
3 wk after
Sweet Scabious
Scabiosa atropurpurea
18 Mar – 1 Apr
3 May
6-8 wk
13 May
14 Jun
1 wk after
26 Jun
7 wk after
Common zinnia
Zinnia elegans
16 – 30 Apr
23 May
4-6 wk
28 May
20 Jun
3 wk after
Common morning glory
Ipomoea purpurea
Fleece
23 Apr – 7 May
30 May
3-5 wk
28 May
20 Jun
3 wk after
Garden cosmos
Cosmos bipinnatus
16 – 30 Apr
20 May
4-6 wk
28 May
17 Jun
3 wk after
26 Jun
7 wk after
Scarlet milkweed
Asclepias curassavica
Fleece
21 Mar – 18 Apr
15 May
8-12 wk
13 Jun
10 Jul
5 wk after
Bee balm
Monarda didyma
13 Feb – 13 Mar
19 Apr
8-12 wk
8 May
14 Jun
0 wk
12 Jun
5 wk after
Yarrow
Achillea millefolium
13 – 27 Mar
3 Apr
6-8 wk
8 May
15 May
0 wk
29 May
3 wk after
Safflower
Carthamus tinctorius
8 May
14 Jun
0 wk
12 May
4 Jun
1 wk after
Iceland poppy
Papaver nudicaule
Season too short
13 – 27 Mar
23 May
6-8 wk
8 May
4 Jul
0 wk
20 Apr
24 Jun
3 wk before
Bishop's flower
Ammi majus
27 Mar – 10 Apr
6 Jun
4-6 wk
8 May
4 Jul
0 wk
29 May
24 Jun
3 wk after
Drumsticks
Pycnosorus globosus
Fleece
5 – 19 Mar
19 Mar
10-12 wk
28 May
28 May
3 wk after
Sunflower
Helianthus annuus
30 Apr – 7 May
8 Jun
3-4 wk
28 May
29 Jun
3 wk after
12 Jun
19 Jun
5 wk after
China aster
Callistephus chinensis
2 – 16 Apr
28 May
6-8 wk
28 May
9 Jul
3 wk after
26 Jun
29 Jun
7 wk after
Annual phlox
Phlox drummondii
23 Mar – 6 Apr
15 May
6-8 wk
18 May
26 Jun
1 wk after
26 Jun
7 wk after
Hollyhock
Alcea rosea
13 – 27 Mar
6-8 wk
8 May
0 wk
29 May
3 wk after
Alpine delphinium
Delphinium elatum
13 Feb – 13 Mar
19 Apr
8-12 wk
8 May
14 Jun
0 wk
12 Jun
5 wk after
African marigold
Tagetes erecta
2 – 16 Apr
15 May
6-8 wk
28 May
26 Jun
3 wk after
Black-eyed Susan
Rudbeckia hirta
18 Mar – 1 Apr
18 May
6-8 wk
13 May
29 Jun
1 wk after
26 Jun
7 wk after
Wood sage
Salvia nemorosa
27 Feb – 13 Mar
9 Apr
8-10 wk
8 May
4 Jun
0 wk
12 Jun
5 wk after
Black-eyed susan vine
Thunbergia alata
Fleece
19 Mar – 16 Apr
9 May
6-10 wk
28 May
20 Jun
3 wk after
California goldenpoppy
Eschscholzia californica
8 May
14 Jul
0 wk
12 May
4 Jul
1 wk after
Painted tongue
Salpiglossis sinuata
19 Mar – 2 Apr
24 Apr
8-10 wk
28 May
19 Jun
3 wk after
Water forget-me-not
Myosotis scorpioides
13 – 27 Mar
3 May
6-8 wk
8 May
14 Jun
0 wk
29 May
4 Jun
3 wk after