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Method
Rel. frost
Last spring frost (0°C) 21 May Normal year · 20 years of data
Frost-free season 126 days 21 May – 24 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)
2 – 16 Apr
18 Jun
5-7 wk
21 May
23 Jul
0 wk
14 May
13 Jul
1 wk before
Broccoli
Brassica oleracea (Italica-gruppen)
9 – 23 Apr
30 Jun
4-6 wk
21 May
28 Jul
0 wk
14 May
18 Jul
1 wk before
Chili pepper
Capsicum annuum
Greenhouse
4 Mar – 1 Apr
4 Apr
8-12 wk
27 May
30 May
1 wk after
Curly Kale
Brassica oleracea (Curly Kale-gruppen)
2 – 16 Apr
13 Jun
5-7 wk
21 May
18 Jul
0 wk
9 May
8 Jul
2 wk before
Garden cucumber
Cucumis sativus
Fleece
6 – 13 May
29 May
3-4 wk
3 Jun
19 Jun
2 wk after
Florence Fennel
Foeniculum vulgare
18 – 25 May
27 May
4-5 wk
22 Jun
24 Jun
5 wk after
26 Jun
5 wk after
Butter bean
Phaseolus lunatus
Season too short
1 – 8 Jun
3-4 wk
29 Jun
6 wk after
Onion
Allium cepa (Cepa-gruppen)
26 Feb – 26 Mar
20 Mar
8-12 wk
21 May
0 wk
31 May
1 wk after
Onion (sets)
Allium cepa (Cepa-gruppen)
14 May
4 Jun
1 wk before
14 May
25 May
1 wk before
Maize
Zea mays
Fleece
29 Apr – 6 May
19 May
3-4 wk
27 May
9 Jun
1 wk after
Swiss Chard
Beta vulgaris (Flavescens-gruppen)
25 Apr – 2 May
7 Jul
3-4 wk
23 May
28 Jul
0 wk
31 May
18 Jul
1 wk after
Carrot
Daucus carota subsp. sativus var. sativus
21 May
8 Jul
0 wk
9 May
28 Jun
2 wk before
Palm Kale
Brassica oleracea (Palm Kale-gruppen)
2 – 16 Apr
13 Jun
5-7 wk
21 May
18 Jul
0 wk
9 May
8 Jul
2 wk before
Potato
Solanum tuberosum
14 – 28 Apr
13 May
4-6 wk
26 May
10 Jun
1 wk after
26 May
31 May
1 wk after
Ornamental Kale
Brassica oleracea (Ornamental-gruppen)
2 – 16 Apr
23 Jun
5-7 wk
21 May
28 Jul
0 wk
14 May
18 Jul
1 wk before
Pumpkin
Cucurbita pepo
25 May – 1 Jun
3 Jun
3-4 wk
22 Jun
24 Jun
5 wk after
Beetroot
Beta vulgaris (Conditiva-gruppen)
25 Apr – 2 May
11 May
3-4 wk
23 May
1 Jun
0 wk
31 May
1 wk after
Red Cabbage
Brassica oleracea (Red Cabbage-gruppen)
9 – 23 Apr
25 Jun
4-6 wk
21 May
23 Jul
0 wk
Lettuce
Lactuca sativa
23 – 30 Apr
12 Jul
3-4 wk
21 May
2 Aug
0 wk
14 May
23 Jul
1 wk before
Savoy Cabbage
Brassica oleracea (Savoy Cabbage-gruppen)
9 – 23 Apr
25 Jun
4-6 wk
21 May
23 Jul
0 wk
Shallot (bulbs)
Allium cepa (Aggregatum-gruppen)
11 – 25 Apr
24 May
2-4 wk
9 May
7 Jun
2 wk before
9 May
28 May
2 wk before
Shallot (sets)
Allium cepa (Aggregatum-gruppen)
14 May
4 Jun
1 wk before
14 May
25 May
1 wk before
Spinach
Spinacia oleracea
23 – 30 Apr
27 Jul
3-4 wk
21 May
17 Aug
0 wk
3 May
7 Aug
3 wk before
Sweet potato
Ipomoea batatas
17 Jun – 1 Jul
4-6 wk
29 Jul
10 wk after
Garden tomato
Solanum lycopersicum
Fleece
1 – 15 Apr
28 Apr
6-8 wk
27 May
9 Jun
1 wk after
Tomatillo
Physalis ixocarpa
Common Bean
Phaseolus vulgaris
6 – 20 May
5 Jun
2-4 wk
3 Jun
19 Jun
2 wk after
26 Jun
5 wk after
White Cabbage
Brassica oleracea (White Cabbage-gruppen)
9 – 23 Apr
25 Jun
4-6 wk
21 May
23 Jul
0 wk
Garden pea
Pisum sativum
23 – 30 Apr
27 Jun
3-4 wk
21 May
18 Jul
0 wk
14 May
8 Jul
1 wk before

Herbs

Plant Sow indoors Transplant Direct sow
Earliest Latest Growing time Earliest Latest Rel. frost Earliest Latest Rel. frost
Basil
Ocimum basilicum
Fleece
22 Apr – 6 May
28 May
4-6 wk
3 Jun
25 Jun
2 wk after
Lemon balm
Melissa officinalis
12 – 26 Mar
23 May
8-10 wk
21 May
18 Jul
0 wk
11 Jun
8 Jul
3 wk after
Dill
Anethum graveolens
14 May
28 Jul
1 wk before
Wild chives
Allium schoenoprasum
26 Mar – 9 Apr
6 Jun
6-8 wk
21 May
18 Jul
0 wk
14 May
8 Jul
1 wk before
Spearmint
Mentha spicata
26 Feb – 26 Mar
23 May
8-12 wk
21 May
18 Jul
0 wk
11 Jun
8 Jul
3 wk after
Coriander
Coriandrum sativum
21 May
17 Aug
0 wk
31 May
7 Aug
1 wk after
Garden sage
Salvia officinalis
14 – 28 Mar
8 May
8-10 wk
23 May
3 Jul
0 wk
Common thyme
Thymus vulgaris
12 – 26 Mar
13 May
8-10 wk
21 May
8 Jul
0 wk
Oregano
Origanum vulgare
26 Mar – 9 Apr
27 May
6-8 wk
21 May
8 Jul
0 wk
11 Jun
28 Jun
3 wk after
Parsley
Petroselinum crispum
26 Mar – 9 Apr
27 May
6-8 wk
21 May
8 Jul
0 wk
14 May
28 Jun
1 wk before
Rosemary
Salvia rosmarinus
14 Feb – 14 Mar
3 Apr
10-14 wk
23 May
12 Jun
0 wk

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