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Method
Rel. frost
Last spring frost (0°C) 12 May Frost 3 of 4 years · 20 years of data
Frost-free season 109 days 12 May – 29 Aug
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)
24 Mar – 7 Apr
11 Jun
5-7 wk
12 May
16 Jul
0 wk
13 May
6 Jul
0 wk
Broccoli
Brassica oleracea (Italica-gruppen)
31 Mar – 14 Apr
23 Jun
4-6 wk
12 May
21 Jul
0 wk
13 May
11 Jul
0 wk
Chili pepper
Capsicum annuum
Greenhouse
27 Feb – 27 Mar
26 Mar
8-12 wk
22 May
1 wk after
Curly Kale
Brassica oleracea (Curly Kale-gruppen)
24 Mar – 7 Apr
6 Jun
5-7 wk
12 May
11 Jul
0 wk
12 May
1 Jul
0 wk
Garden cucumber
Cucumis sativus
Fleece
4 – 11 May
20 May
3-4 wk
1 Jun
10 Jun
3 wk after
Florence Fennel
Foeniculum vulgare
Fleece
27 Apr – 4 May
18 May
4-5 wk
1 Jun
15 Jun
3 wk after
6 Jun
4 wk after
Butter bean
Phaseolus lunatus
Season too short
25 May – 1 Jun
3-4 wk
22 Jun
6 wk after
Onion
Allium cepa (Cepa-gruppen)
17 Feb – 17 Mar
13 Mar
8-12 wk
12 May
0 wk
25 May
2 wk after
Onion (sets)
Allium cepa (Cepa-gruppen)
13 May
28 May
0 wk
13 May
18 May
0 wk
Maize
Zea mays
Fleece
24 Apr – 1 May
10 May
3-4 wk
22 May
31 May
1 wk after
Swiss Chard
Beta vulgaris (Flavescens-gruppen)
19 – 26 Apr
14 Jun
3-4 wk
17 May
5 Jul
1 wk after
25 May
25 Jun
2 wk after
Carrot
Daucus carota subsp. sativus var. sativus
12 May
30 Jun
0 wk
12 May
20 Jun
0 wk
Palm Kale
Brassica oleracea (Palm Kale-gruppen)
24 Mar – 7 Apr
6 Jun
5-7 wk
12 May
11 Jul
0 wk
12 May
1 Jul
0 wk
Potato
Solanum tuberosum
10 – 24 Apr
7 May
4-6 wk
22 May
4 Jun
1 wk after
22 May
25 May
1 wk after
Ornamental Kale
Brassica oleracea (Ornamental-gruppen)
24 Mar – 7 Apr
15 Jun
5-7 wk
12 May
20 Jul
0 wk
13 May
10 Jul
0 wk
Pumpkin
Cucurbita pepo
20 – 27 May
25 May
3-4 wk
17 Jun
5 wk after
Beetroot
Beta vulgaris (Conditiva-gruppen)
19 – 26 Apr
19 May
3-4 wk
17 May
9 Jun
1 wk after
25 May
30 May
2 wk after
Red Cabbage
Brassica oleracea (Red Cabbage-gruppen)
31 Mar – 14 Apr
18 Jun
4-6 wk
12 May
16 Jul
0 wk
Lettuce
Lactuca sativa
14 – 21 Apr
4 Jul
3-4 wk
12 May
25 Jul
0 wk
13 May
15 Jul
0 wk
Savoy Cabbage
Brassica oleracea (Savoy Cabbage-gruppen)
31 Mar – 14 Apr
18 Jun
4-6 wk
12 May
16 Jul
0 wk
Shallot (bulbs)
Allium cepa (Aggregatum-gruppen)
14 – 28 Apr
18 May
2-4 wk
12 May
1 Jun
0 wk
12 May
22 May
0 wk
Shallot (sets)
Allium cepa (Aggregatum-gruppen)
13 May
28 May
0 wk
13 May
18 May
0 wk
Spinach
Spinacia oleracea
14 – 21 Apr
20 Jul
3-4 wk
12 May
10 Aug
0 wk
9 May
31 Jul
0 wk
Sweet potato
Ipomoea batatas
6 – 20 Jun
4-6 wk
18 Jul
10 wk after
Garden tomato
Solanum lycopersicum
Fleece
27 Mar – 10 Apr
19 Apr
6-8 wk
22 May
31 May
1 wk after
Tomatillo
Physalis ixocarpa
Common Bean
Phaseolus vulgaris
4 – 18 May
27 May
2-4 wk
1 Jun
10 Jun
3 wk after
24 Jun
6 wk after
White Cabbage
Brassica oleracea (White Cabbage-gruppen)
31 Mar – 14 Apr
18 Jun
4-6 wk
12 May
16 Jul
0 wk
Garden pea
Pisum sativum
14 – 21 Apr
19 Jun
3-4 wk
12 May
10 Jul
0 wk
13 May
30 Jun
0 wk

Herbs

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