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Method
Rel. frost
Last spring frost (0°C) 26 May Normal year · 20 years of data
Frost-free season 103 days 26 May – 6 Sep
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)
7 – 21 Apr
12 Jun
5-7 wk
26 May
17 Jul
0 wk
27 May
7 Jul
0 wk
Broccoli
Brassica oleracea (Italica-gruppen)
14 – 28 Apr
24 Jun
4-6 wk
26 May
22 Jul
0 wk
27 May
12 Jul
0 wk
Chili pepper
Capsicum annuum
Season too short
9 Mar – 6 Apr
22 Mar
8-12 wk
1 Jun
1 wk after
Curly Kale
Brassica oleracea (Curly Kale-gruppen)
7 – 21 Apr
7 Jun
5-7 wk
26 May
12 Jul
0 wk
26 May
2 Jul
0 wk
Garden cucumber
Cucumis sativus
Fleece
11 – 18 May
16 May
3-4 wk
8 Jun
2 wk after
Florence Fennel
Foeniculum vulgare
Fleece
4 – 11 May
1 Jun
4-5 wk
8 Jun
29 Jun
2 wk after
20 Jun
4 wk after
Butter bean
Phaseolus lunatus
Season too short
6 – 13 Jun
3-4 wk
4 Jul
6 wk after
Onion
Allium cepa (Cepa-gruppen)
Fleece
3 – 31 Mar
22 Mar
8-12 wk
26 May
0 wk
1 Jun
1 wk after
Onion (sets)
Allium cepa (Cepa-gruppen)
27 May
28 May
0 wk
27 May
0 wk
Maize
Zea mays
Greenhouse
28 Apr – 5 May
28 May
3-4 wk
26 May
18 Jun
0 wk
Swiss Chard
Beta vulgaris (Flavescens-gruppen)
30 Apr – 7 May
28 Jun
3-4 wk
28 May
19 Jul
0 wk
8 Jun
9 Jul
2 wk after
Carrot
Daucus carota subsp. sativus var. sativus
26 May
2 Jul
0 wk
26 May
22 Jun
0 wk
Palm Kale
Brassica oleracea (Palm Kale-gruppen)
7 – 21 Apr
7 Jun
5-7 wk
26 May
12 Jul
0 wk
26 May
2 Jul
0 wk
Potato
Solanum tuberosum
24 Apr – 8 May
12 May
4-6 wk
5 Jun
9 Jun
1 wk after
5 Jun
1 wk after
Ornamental Kale
Brassica oleracea (Ornamental-gruppen)
7 – 21 Apr
17 Jun
5-7 wk
26 May
22 Jul
0 wk
27 May
12 Jul
0 wk
Pumpkin
Cucurbita pepo
Fleece
11 – 18 May
12 Jun
3-4 wk
8 Jun
3 Jul
2 wk after
Beetroot
Beta vulgaris (Conditiva-gruppen)
30 Apr – 7 May
18 May
3-4 wk
28 May
8 Jun
0 wk
8 Jun
2 wk after
Red Cabbage
Brassica oleracea (Red Cabbage-gruppen)
14 – 28 Apr
19 Jun
4-6 wk
26 May
17 Jul
0 wk
Lettuce
Lactuca sativa
28 Apr – 5 May
6 Jul
3-4 wk
26 May
27 Jul
0 wk
27 May
17 Jul
0 wk
Savoy Cabbage
Brassica oleracea (Savoy Cabbage-gruppen)
14 – 28 Apr
19 Jun
4-6 wk
26 May
17 Jul
0 wk
Shallot (bulbs)
Allium cepa (Aggregatum-gruppen)
28 Apr – 12 May
19 May
2-4 wk
26 May
2 Jun
0 wk
26 May
0 wk
Shallot (sets)
Allium cepa (Aggregatum-gruppen)
27 May
28 May
0 wk
27 May
0 wk
Spinach
Spinacia oleracea
28 Apr – 5 May
21 Jul
3-4 wk
26 May
11 Aug
0 wk
23 May
1 Aug
0 wk
Sweet potato
Ipomoea batatas
20 Jun – 4 Jul
4-6 wk
1 Aug
10 wk after
Garden tomato
Solanum lycopersicum
Greenhouse
31 Mar – 14 Apr
7 May
6-8 wk
26 May
18 Jun
0 wk
Tomatillo
Physalis ixocarpa
Common Bean
Phaseolus vulgaris
11 – 25 May
23 May
2-4 wk
8 Jun
2 wk after
8 Jul
6 wk after
White Cabbage
Brassica oleracea (White Cabbage-gruppen)
14 – 28 Apr
19 Jun
4-6 wk
26 May
17 Jul
0 wk
Garden pea
Pisum sativum
28 Apr – 5 May
21 Jun
3-4 wk
26 May
12 Jul
0 wk
27 May
2 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
Fleece
27 Apr – 11 May
21 May
4-6 wk
8 Jun
18 Jun
2 wk after
Lemon balm
Melissa officinalis
17 – 31 Mar
17 May
8-10 wk
26 May
12 Jul
0 wk
20 Jun
2 Jul
4 wk after
Dill
Anethum graveolens
27 May
19 Jul
0 wk
Wild chives
Allium schoenoprasum
31 Mar – 14 Apr
31 May
6-8 wk
26 May
12 Jul
0 wk
27 May
2 Jul
0 wk
Spearmint
Mentha spicata
3 – 31 Mar
17 May
8-12 wk
26 May
12 Jul
0 wk
20 Jun
2 Jul
4 wk after
Coriander
Coriandrum sativum
26 May
8 Aug
0 wk
8 Jun
29 Jul
2 wk after
Garden sage
Salvia officinalis
19 Mar – 2 Apr
2 May
8-10 wk
28 May
27 Jun
0 wk
Common thyme
Thymus vulgaris
17 – 31 Mar
7 May
8-10 wk
26 May
2 Jul
0 wk
Oregano
Origanum vulgare
31 Mar – 14 Apr
21 May
6-8 wk
26 May
2 Jul
0 wk
20 Jun
22 Jun
4 wk after
Parsley
Petroselinum crispum
31 Mar – 14 Apr
21 May
6-8 wk
26 May
2 Jul
0 wk
27 May
22 Jun
0 wk
Rosemary
Salvia rosmarinus
19 Feb – 19 Mar
19 Mar
10-14 wk
28 May
28 May
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
11 – 18 May
28 May
3-4 wk
8 Jun
18 Jun
2 wk after
Cornflower
Centaurea cyanus
26 May
12 Jul
0 wk
27 May
2 Jul
0 wk
Statice
Limonium sinuatum
30 Mar – 13 Apr
16 Apr
8-10 wk
8 Jun
11 Jun
2 wk after
Sweet William
Dianthus barbatus
31 Mar – 14 Apr
6-8 wk
26 May
0 wk
5 Jun
1 wk after
Snow-on-the-mountain
Euphorbia marginata
13 – 27 Apr
30 Apr
6-8 wk
8 Jun
11 Jun
2 wk after
1 Aug
10 wk after
Pinnate dahlia
Dahlia × pinnata
11 – 25 Apr
4 May
6-8 wk
6 Jun
15 Jun
2 wk after
Pinnate dahlia (tubers)
Dahlia × pinnata
Fleece
13 Apr – 11 May
28 May
4-8 wk
8 Jun
25 Jun
2 wk after
8 Jun
15 Jun
2 wk after
Foxglove
Digitalis purpurea
17 – 31 Mar
8-10 wk
26 May
0 wk
8 Jun
2 wk after
Busy lizzie
Impatiens walleriana
4 Apr – 2 May
8 Jun
8-12 wk
27 Jun
3 Aug
5 wk after
Creeping zinnia
Sanvitalia procumbens
13 – 27 Apr
10 May
6-8 wk
8 Jun
21 Jun
2 wk after
Hyacinth bean
Dolichos lablab
Season too short
27 Apr – 11 May
4-6 wk
8 Jun
2 wk after
Chinese lantern
Physalis alkekengi
19 Mar – 2 Apr
14 Apr
8-10 wk
28 May
9 Jun
0 wk
Love in a mist
Nigella damascena
26 May
27 Jun
0 wk
27 May
17 Jun
0 wk
Strawflower
Xerochrysum bracteatum
Fleece
6 – 20 Apr
27 Apr
6-8 wk
1 Jun
8 Jun
1 wk after
15 Jul
7 wk after
Purple-top vervain
Verbena bonariensis
5 Mar – 2 Apr
14 Apr
8-12 wk
28 May
9 Jun
0 wk
Cardoon
Cynara cardunculus
Greenhouse
3 – 31 Mar
18 Mar
8-12 wk
26 May
0 wk
Regal-foxtail
Ptilotus nobilis
Fleece
16 Mar – 13 Apr
13 Apr
8-12 wk
8 Jun
8 Jun
2 wk after
Globe amaranth
Gomphrena globosa
Fleece
13 – 27 Apr
27 Apr
6-8 wk
8 Jun
8 Jun
2 wk after
Corn poppy
Papaver rhoeas
26 May
12 Jul
0 wk
27 May
2 Jul
0 wk
Snapdragon
Antirrhinum majus
3 – 31 Mar
7 May
8-12 wk
26 May
2 Jul
0 wk
5 Jun
22 Jun
1 wk after
Flossflower
Ageratum houstonianum
Fleece
30 Mar – 13 Apr
3 May
8-10 wk
8 Jun
28 Jun
2 wk after
Sweet pea
Lathyrus odoratus
31 Mar – 21 Apr
28 May
5-8 wk
26 May
2 Jul
0 wk
Stock
Matthiola incana
31 Mar – 14 Apr
31 May
6-8 wk
26 May
12 Jul
0 wk
8 Jun
2 Jul
2 wk after
Wormwood
Artemisia absinthium
31 Mar – 14 Apr
1 May
6-8 wk
26 May
12 Jun
0 wk
8 Jun
2 wk after
Mexican sunflower
Tithonia rotundifolia
Greenhouse
20 Apr – 4 May
13 May
4-6 wk
1 Jun
10 Jun
1 wk after
Garden pansy
Viola × wittrockiana
17 – 31 Mar
17 May
8-10 wk
26 May
12 Jul
0 wk
5 Jun
2 Jul
1 wk after
Petunia
Petunia
16 Mar – 13 Apr
16 Apr
8-12 wk
8 Jun
11 Jun
2 wk after
Sweet Scabious
Scabiosa atropurpurea
2 – 16 Apr
28 Apr
6-8 wk
28 May
9 Jun
0 wk
8 Jul
6 wk after
Common zinnia
Zinnia elegans
27 Apr – 11 May
21 May
4-6 wk
8 Jun
18 Jun
2 wk after
Common morning glory
Ipomoea purpurea
Fleece
4 – 18 May
28 May
3-5 wk
8 Jun
18 Jun
2 wk after
Garden cosmos
Cosmos bipinnatus
27 Apr – 11 May
18 May
4-6 wk
8 Jun
15 Jun
2 wk after
8 Jul
6 wk after
Scarlet milkweed
Asclepias curassavica
Fleece
4 Apr – 2 May
13 May
8-12 wk
27 Jun
8 Jul
5 wk after
Bee balm
Monarda didyma
3 – 31 Mar
17 Apr
8-12 wk
26 May
12 Jun
0 wk
20 Jun
4 wk after
Yarrow
Achillea millefolium
31 Mar – 14 Apr
1 Apr
6-8 wk
26 May
0 wk
8 Jun
2 wk after
Safflower
Carthamus tinctorius
26 May
12 Jun
0 wk
27 May
2 Jun
0 wk
Iceland poppy
Papaver nudicaule
Season too short
31 Mar – 14 Apr
21 May
6-8 wk
26 May
2 Jul
0 wk
10 May
22 Jun
2 wk before
Bishop's flower
Ammi majus
14 – 28 Apr
4 Jun
4-6 wk
26 May
2 Jul
0 wk
8 Jun
22 Jun
2 wk after
Drumsticks
Pycnosorus globosus
Greenhouse
9 – 23 Mar
27 Mar
10-12 wk
1 Jun
5 Jun
1 wk after
Sunflower
Helianthus annuus
11 – 18 May
27 May
3-4 wk
8 Jun
17 Jun
2 wk after
20 Jun
4 wk after
China aster
Callistephus chinensis
13 – 27 Apr
16 May
6-8 wk
8 Jun
27 Jun
2 wk after
8 Jul
6 wk after
Annual phlox
Phlox drummondii
6 – 20 Apr
10 May
6-8 wk
1 Jun
21 Jun
1 wk after
8 Jul
6 wk after
Hollyhock
Alcea rosea
31 Mar – 14 Apr
6-8 wk
26 May
0 wk
8 Jun
2 wk after
Alpine delphinium
Delphinium elatum
3 – 31 Mar
17 Apr
8-12 wk
26 May
12 Jun
0 wk
20 Jun
4 wk after
African marigold
Tagetes erecta
13 – 27 Apr
10 May
6-8 wk
8 Jun
21 Jun
2 wk after
Black-eyed Susan
Rudbeckia hirta
2 – 16 Apr
6 May
6-8 wk
28 May
17 Jun
0 wk
8 Jul
6 wk after
Wood sage
Salvia nemorosa
17 – 31 Mar
7 Apr
8-10 wk
26 May
2 Jun
0 wk
20 Jun
4 wk after
Black-eyed susan vine
Thunbergia alata
Fleece
30 Mar – 27 Apr
7 May
6-10 wk
8 Jun
18 Jun
2 wk after
California goldenpoppy
Eschscholzia californica
26 May
12 Jul
0 wk
27 May
2 Jul
0 wk
Painted tongue
Salpiglossis sinuata
30 Mar – 13 Apr
12 Apr
8-10 wk
8 Jun
2 wk after
Water forget-me-not
Myosotis scorpioides
31 Mar – 14 Apr
1 May
6-8 wk
26 May
12 Jun
0 wk
8 Jun
2 wk after