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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 124 days 13 May – 14 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
Season too short
5 Mar – 2 Apr
15 Mar
8-12 wk
28 May
2 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
Greenhouse
30 Apr – 7 May
9 Jun
3-4 wk
28 May
30 Jun
2 wk after
Florence Fennel
Foeniculum vulgare
Fleece
5 – 12 May
1 Jun
4-5 wk
9 Jun
29 Jun
4 wk after
17 Jun
19 Jun
5 wk after
Butter bean
Phaseolus lunatus
Season too short
2 – 9 Jun
3-4 wk
30 Jun
7 wk after
Onion
Allium cepa (Cepa-gruppen)
18 Feb – 18 Mar
13 Mar
8-12 wk
13 May
0 wk
3 Jun
3 wk after
Onion (sets)
Allium cepa (Cepa-gruppen)
17 May
28 May
1 wk after
17 May
18 May
1 wk after
Maize
Zea mays
Fleece
30 Apr – 7 May
3-4 wk
28 May
2 wk after
Swiss Chard
Beta vulgaris (Flavescens-gruppen)
23 – 30 Apr
28 Jun
3-4 wk
21 May
19 Jul
1 wk after
3 Jun
9 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
11 May
4-6 wk
29 May
8 Jun
2 wk after
29 May
29 May
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
Fleece
12 – 19 May
14 Jun
3-4 wk
9 Jun
5 Jul
4 wk after
Beetroot
Beta vulgaris (Conditiva-gruppen)
23 – 30 Apr
8 May
3-4 wk
21 May
29 May
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
18 May
2-4 wk
13 May
1 Jun
0 wk
13 May
22 May
0 wk
Shallot (sets)
Allium cepa (Aggregatum-gruppen)
17 May
28 May
1 wk after
17 May
18 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
2 – 16 Apr
8 Apr
6-8 wk
28 May
2 wk after
Tomatillo
Physalis ixocarpa
Common Bean
Phaseolus vulgaris
Fleece
30 Apr – 14 May
16 Jun
2-4 wk
28 May
30 Jun
2 wk after
17 Jun
20 Jun
5 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
28 Apr – 12 May
23 May
4-6 wk
9 Jun
20 Jun
4 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
19 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
8 Aug
0 wk
3 Jun
29 Jul
3 wk after
Garden sage
Salvia officinalis
12 – 26 Mar
4 May
8-10 wk
21 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
12 Feb – 12 Mar
23 Mar
10-14 wk
21 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
12 – 19 May
30 May
3-4 wk
9 Jun
20 Jun
4 wk after
Cornflower
Centaurea cyanus
13 May
14 Jul
0 wk
17 May
4 Jul
1 wk after
Statice
Limonium sinuatum
31 Mar – 14 Apr
19 Apr
8-10 wk
9 Jun
14 Jun
4 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
14 – 28 Apr
3 May
6-8 wk
9 Jun
14 Jun
4 wk after
26 Jul
11 wk after
Pinnate dahlia
Dahlia × pinnata
6 – 20 Apr
6 May
6-8 wk
1 Jun
17 Jun
3 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
2 – 30 Apr
10 Jun
8-12 wk
25 Jun
5 Aug
6 wk after
Creeping zinnia
Sanvitalia procumbens
14 – 28 Apr
13 May
6-8 wk
9 Jun
24 Jun
4 wk after
Hyacinth bean
Dolichos lablab
Season too short
28 Apr – 12 May
4-6 wk
9 Jun
4 wk after
Chinese lantern
Physalis alkekengi
12 – 26 Mar
14 Apr
8-10 wk
21 May
9 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
14 – 28 Apr
23 Apr
6-8 wk
9 Jun
4 wk after
26 Jul
11 wk after
Purple-top vervain
Verbena bonariensis
26 Feb – 26 Mar
14 Apr
8-12 wk
21 May
9 Jun
1 wk after
Cardoon
Cynara cardunculus
Fleece
5 Mar – 2 Apr
20 Mar
8-12 wk
28 May
2 wk after
Regal-foxtail
Ptilotus nobilis
Fleece
17 Mar – 14 Apr
15 Apr
8-12 wk
9 Jun
10 Jun
4 wk after
Globe amaranth
Gomphrena globosa
Fleece
14 – 28 Apr
29 Apr
6-8 wk
9 Jun
10 Jun
4 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
Fleece
31 Mar – 14 Apr
5 May
8-10 wk
9 Jun
30 Jun
4 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
28 Apr – 12 May
8 May
4-6 wk
9 Jun
4 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
17 Mar – 14 Apr
19 Apr
8-12 wk
9 Jun
14 Jun
4 wk after
Sweet Scabious
Scabiosa atropurpurea
26 Mar – 9 Apr
28 Apr
6-8 wk
21 May
9 Jun
1 wk after
1 Jul
7 wk after
Common zinnia
Zinnia elegans
28 Apr – 12 May
23 May
4-6 wk
9 Jun
20 Jun
4 wk after
Common morning glory
Ipomoea purpurea
Fleece
5 – 19 May
30 May
3-5 wk
9 Jun
20 Jun
4 wk after
Garden cosmos
Cosmos bipinnatus
28 Apr – 12 May
20 May
4-6 wk
9 Jun
17 Jun
4 wk after
1 Jul
7 wk after
Scarlet milkweed
Asclepias curassavica
Fleece
2 – 30 Apr
15 May
8-12 wk
25 Jun
10 Jul
6 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
Greenhouse
5 – 19 Mar
26 Mar
10-12 wk
28 May
4 Jun
2 wk after
Sunflower
Helianthus annuus
12 – 19 May
31 May
3-4 wk
9 Jun
21 Jun
4 wk after
17 Jun
5 wk after
China aster
Callistephus chinensis
14 – 28 Apr
20 May
6-8 wk
9 Jun
1 Jul
4 wk after
1 Jul
7 wk after
Annual phlox
Phlox drummondii
2 – 16 Apr
13 May
6-8 wk
28 May
24 Jun
2 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
14 – 28 Apr
13 May
6-8 wk
9 Jun
24 Jun
4 wk after
Black-eyed Susan
Rudbeckia hirta
26 Mar – 9 Apr
10 May
6-8 wk
21 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
31 Mar – 28 Apr
9 May
6-10 wk
9 Jun
20 Jun
4 wk after
California goldenpoppy
Eschscholzia californica
13 May
14 Jul
0 wk
17 May
4 Jul
1 wk after
Painted tongue
Salpiglossis sinuata
31 Mar – 14 Apr
23 Apr
8-10 wk
9 Jun
18 Jun
4 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