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