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Method
Rel. frost
Last spring frost (0°C) 17 May Normal year · 20 years of data
Frost-free season 126 days 17 May – 20 Sep
Probability that frost is over

50% = 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
13 Jun
5-7 wk
17 May
18 Jul
0 wk
18 May
8 Jul
0 wk
Broccoli
Brassica oleracea (Italica-gruppen)
5 – 19 Apr
25 Jun
4-6 wk
17 May
23 Jul
0 wk
18 May
13 Jul
0 wk
Chili pepper
Capsicum annuum
Greenhouse
5 Mar – 2 Apr
16 Apr
8-12 wk
28 May
11 Jun
2 wk after
Curly Kale
Brassica oleracea (Curly Kale-gruppen)
29 Mar – 12 Apr
8 Jun
5-7 wk
17 May
13 Jul
0 wk
17 May
3 Jul
0 wk
Garden cucumber
Cucumis sativus
23 – 30 May
3-4 wk
20 Jun
5 wk after
Florence Fennel
Foeniculum vulgare
16 – 23 May
31 May
4-5 wk
20 Jun
28 Jun
5 wk after
29 Jun
6 wk after
Butter bean
Phaseolus lunatus
Season too short
30 May – 6 Jun
3-4 wk
27 Jun
6 wk after
Onion
Allium cepa (Cepa-gruppen)
22 Feb – 22 Mar
29 Mar
8-12 wk
17 May
24 May
0 wk
30 May
2 wk after
Onion (sets)
Allium cepa (Cepa-gruppen)
18 May
13 Jun
0 wk
18 May
3 Jun
0 wk
Maize
Zea mays
Fleece
30 Apr – 7 May
31 May
3-4 wk
28 May
21 Jun
2 wk after
Swiss Chard
Beta vulgaris (Flavescens-gruppen)
25 Apr – 2 May
2 Jul
3-4 wk
23 May
23 Jul
1 wk after
30 May
13 Jul
2 wk after
Carrot
Daucus carota subsp. sativus var. sativus
17 May
3 Jul
0 wk
17 May
23 Jun
0 wk
Palm Kale
Brassica oleracea (Palm Kale-gruppen)
29 Mar – 12 Apr
8 Jun
5-7 wk
17 May
13 Jul
0 wk
17 May
3 Jul
0 wk
Potato
Solanum tuberosum
15 – 29 Apr
25 May
4-6 wk
27 May
22 Jun
1 wk after
27 May
12 Jun
1 wk after
Ornamental Kale
Brassica oleracea (Ornamental-gruppen)
29 Mar – 12 Apr
18 Jun
5-7 wk
17 May
23 Jul
0 wk
18 May
13 Jul
0 wk
Pumpkin
Cucurbita pepo
23 – 30 May
15 Jun
3-4 wk
20 Jun
6 Jul
5 wk after
Beetroot
Beta vulgaris (Conditiva-gruppen)
25 Apr – 2 May
10 Jun
3-4 wk
23 May
1 Jul
1 wk after
30 May
21 Jun
2 wk after
Red Cabbage
Brassica oleracea (Red Cabbage-gruppen)
5 – 19 Apr
20 Jun
4-6 wk
17 May
18 Jul
0 wk
Lettuce
Lactuca sativa
19 – 26 Apr
7 Jul
3-4 wk
17 May
28 Jul
0 wk
18 May
18 Jul
0 wk
Savoy Cabbage
Brassica oleracea (Savoy Cabbage-gruppen)
5 – 19 Apr
20 Jun
4-6 wk
17 May
18 Jul
0 wk
Shallot (bulbs)
Allium cepa (Aggregatum-gruppen)
19 Apr – 3 May
30 May
2-4 wk
17 May
13 Jun
0 wk
17 May
3 Jun
0 wk
Shallot (sets)
Allium cepa (Aggregatum-gruppen)
18 May
13 Jun
0 wk
18 May
3 Jun
0 wk
Spinach
Spinacia oleracea
19 – 26 Apr
22 Jul
3-4 wk
17 May
12 Aug
0 wk
14 May
2 Aug
0 wk
Sweet potato
Ipomoea batatas
11 – 25 Jun
4-6 wk
23 Jul
10 wk after
Garden tomato
Solanum lycopersicum
Fleece
2 – 16 Apr
10 May
6-8 wk
28 May
21 Jun
2 wk after
Tomatillo
Physalis ixocarpa
Common Bean
Phaseolus vulgaris
9 – 23 May
17 Jun
2-4 wk
6 Jun
1 Jul
3 wk after
29 Jun
6 wk after
White Cabbage
Brassica oleracea (White Cabbage-gruppen)
5 – 19 Apr
20 Jun
4-6 wk
17 May
18 Jul
0 wk
Garden pea
Pisum sativum
19 – 26 Apr
22 Jun
3-4 wk
17 May
13 Jul
0 wk
18 May
3 Jul
0 wk

Herbs

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