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Method
Rel. frost
Last spring frost (0°C) 21 May Normal year · 20 years of data
Frost-free season 121 days 21 May – 19 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)
2 – 16 Apr
13 Jun
5-7 wk
21 May
18 Jul
0 wk
22 May
8 Jul
0 wk
Broccoli
Brassica oleracea (Italica-gruppen)
9 – 23 Apr
25 Jun
4-6 wk
21 May
23 Jul
0 wk
22 May
13 Jul
0 wk
Chili pepper
Capsicum annuum
Greenhouse
9 Mar – 6 Apr
28 Mar
8-12 wk
1 Jun
2 wk after
Curly Kale
Brassica oleracea (Curly Kale-gruppen)
2 – 16 Apr
8 Jun
5-7 wk
21 May
13 Jul
0 wk
21 May
3 Jul
0 wk
Garden cucumber
Cucumis sativus
Fleece
13 – 20 May
22 May
3-4 wk
10 Jun
12 Jun
3 wk after
Florence Fennel
Foeniculum vulgare
Fleece
6 – 13 May
5 Jun
4-5 wk
10 Jun
3 Jul
3 wk after
15 Jun
23 Jun
4 wk after
Butter bean
Phaseolus lunatus
Season too short
3 – 10 Jun
3-4 wk
1 Jul
6 wk after
Onion
Allium cepa (Cepa-gruppen)
26 Feb – 26 Mar
18 Mar
8-12 wk
21 May
0 wk
3 Jun
2 wk after
Onion (sets)
Allium cepa (Cepa-gruppen)
22 May
2 Jun
0 wk
22 May
23 May
0 wk
Maize
Zea mays
Fleece
4 – 11 May
12 May
3-4 wk
1 Jun
2 Jun
2 wk after
Swiss Chard
Beta vulgaris (Flavescens-gruppen)
29 Apr – 6 May
2 Jul
3-4 wk
27 May
23 Jul
1 wk after
3 Jun
13 Jul
2 wk after
Carrot
Daucus carota subsp. sativus var. sativus
21 May
3 Jul
0 wk
21 May
23 Jun
0 wk
Palm Kale
Brassica oleracea (Palm Kale-gruppen)
2 – 16 Apr
8 Jun
5-7 wk
21 May
13 Jul
0 wk
21 May
3 Jul
0 wk
Potato
Solanum tuberosum
19 Apr – 3 May
19 May
4-6 wk
31 May
16 Jun
1 wk after
31 May
6 Jun
1 wk after
Ornamental Kale
Brassica oleracea (Ornamental-gruppen)
2 – 16 Apr
18 Jun
5-7 wk
21 May
23 Jul
0 wk
22 May
13 Jul
0 wk
Pumpkin
Cucurbita pepo
Fleece
13 – 20 May
17 Jun
3-4 wk
10 Jun
8 Jul
3 wk after
Beetroot
Beta vulgaris (Conditiva-gruppen)
29 Apr – 6 May
21 May
3-4 wk
27 May
11 Jun
1 wk after
3 Jun
2 wk after
Red Cabbage
Brassica oleracea (Red Cabbage-gruppen)
9 – 23 Apr
20 Jun
4-6 wk
21 May
18 Jul
0 wk
Lettuce
Lactuca sativa
23 – 30 Apr
7 Jul
3-4 wk
21 May
28 Jul
0 wk
22 May
18 Jul
0 wk
Savoy Cabbage
Brassica oleracea (Savoy Cabbage-gruppen)
9 – 23 Apr
20 Jun
4-6 wk
21 May
18 Jul
0 wk
Shallot (bulbs)
Allium cepa (Aggregatum-gruppen)
23 Apr – 7 May
24 May
2-4 wk
21 May
7 Jun
0 wk
21 May
28 May
0 wk
Shallot (sets)
Allium cepa (Aggregatum-gruppen)
22 May
2 Jun
0 wk
22 May
23 May
0 wk
Spinach
Spinacia oleracea
23 – 30 Apr
22 Jul
3-4 wk
21 May
12 Aug
0 wk
18 May
2 Aug
0 wk
Sweet potato
Ipomoea batatas
15 – 29 Jun
4-6 wk
27 Jul
10 wk after
Garden tomato
Solanum lycopersicum
Fleece
6 – 20 Apr
21 Apr
6-8 wk
1 Jun
2 Jun
2 wk after
Tomatillo
Physalis ixocarpa
Common Bean
Phaseolus vulgaris
13 – 27 May
29 May
2-4 wk
10 Jun
12 Jun
3 wk after
3 Jul
6 wk after
White Cabbage
Brassica oleracea (White Cabbage-gruppen)
9 – 23 Apr
20 Jun
4-6 wk
21 May
18 Jul
0 wk
Garden pea
Pisum sativum
23 – 30 Apr
22 Jun
3-4 wk
21 May
13 Jul
0 wk
22 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
Fleece
29 Apr – 13 May
26 May
4-6 wk
10 Jun
23 Jun
3 wk after
Lemon balm
Melissa officinalis
12 – 26 Mar
18 May
8-10 wk
21 May
13 Jul
0 wk
15 Jun
3 Jul
4 wk after
Dill
Anethum graveolens
22 May
23 Jul
0 wk
Wild chives
Allium schoenoprasum
26 Mar – 9 Apr
1 Jun
6-8 wk
21 May
13 Jul
0 wk
22 May
3 Jul
0 wk
Spearmint
Mentha spicata
26 Feb – 26 Mar
18 May
8-12 wk
21 May
13 Jul
0 wk
15 Jun
3 Jul
4 wk after
Coriander
Coriandrum sativum
21 May
12 Aug
0 wk
3 Jun
2 Aug
2 wk after
Garden sage
Salvia officinalis
18 Mar – 1 Apr
3 May
8-10 wk
27 May
28 Jun
1 wk after
Common thyme
Thymus vulgaris
12 – 26 Mar
8 May
8-10 wk
21 May
3 Jul
0 wk
Oregano
Origanum vulgare
26 Mar – 9 Apr
22 May
6-8 wk
21 May
3 Jul
0 wk
15 Jun
23 Jun
4 wk after
Parsley
Petroselinum crispum
26 Mar – 9 Apr
22 May
6-8 wk
21 May
3 Jul
0 wk
22 May
23 Jun
0 wk
Rosemary
Salvia rosmarinus
18 Feb – 18 Mar
4 Apr
10-14 wk
27 May
13 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
Fleece
13 – 20 May
2 Jun
3-4 wk
10 Jun
23 Jun
3 wk after
Cornflower
Centaurea cyanus
21 May
13 Jul
0 wk
22 May
3 Jul
0 wk
Statice
Limonium sinuatum
1 – 15 Apr
22 Apr
8-10 wk
10 Jun
17 Jun
3 wk after
Sweet William
Dianthus barbatus
26 Mar – 9 Apr
6-8 wk
21 May
0 wk
31 May
1 wk after
Snow-on-the-mountain
Euphorbia marginata
15 – 29 Apr
6 May
6-8 wk
10 Jun
17 Jun
3 wk after
27 Jul
10 wk after
Pinnate dahlia
Dahlia × pinnata
10 – 24 Apr
13 May
6-8 wk
5 Jun
24 Jun
2 wk after
Pinnate dahlia (tubers)
Dahlia × pinnata
20 Apr – 18 May
27 May
4-8 wk
15 Jun
24 Jun
4 wk after
15 Jun
4 wk after
Foxglove
Digitalis purpurea
12 – 26 Mar
8-10 wk
21 May
0 wk
3 Jun
2 wk after
Busy lizzie
Impatiens walleriana
1 – 29 Apr
13 Jun
8-12 wk
24 Jun
8 Aug
5 wk after
Creeping zinnia
Sanvitalia procumbens
15 – 29 Apr
16 May
6-8 wk
10 Jun
27 Jun
3 wk after
Hyacinth bean
Dolichos lablab
Season too short
29 Apr – 13 May
4-6 wk
10 Jun
3 wk after
Chinese lantern
Physalis alkekengi
18 Mar – 1 Apr
18 Apr
8-10 wk
27 May
13 Jun
1 wk after
Love in a mist
Nigella damascena
21 May
28 Jun
0 wk
22 May
18 Jun
0 wk
Strawflower
Xerochrysum bracteatum
15 – 29 Apr
26 Apr
6-8 wk
10 Jun
3 wk after
27 Jul
10 wk after
Purple-top vervain
Verbena bonariensis
4 Mar – 1 Apr
18 Apr
8-12 wk
27 May
13 Jun
1 wk after
Cardoon
Cynara cardunculus
Fleece
9 Mar – 6 Apr
19 Mar
8-12 wk
1 Jun
2 wk after
Regal-foxtail
Ptilotus nobilis
Fleece
18 Mar – 15 Apr
18 Apr
8-12 wk
10 Jun
13 Jun
3 wk after
Globe amaranth
Gomphrena globosa
Fleece
15 – 29 Apr
2 May
6-8 wk
10 Jun
13 Jun
3 wk after
Corn poppy
Papaver rhoeas
21 May
13 Jul
0 wk
22 May
3 Jul
0 wk
Snapdragon
Antirrhinum majus
26 Feb – 26 Mar
8 May
8-12 wk
21 May
3 Jul
0 wk
31 May
23 Jun
1 wk after
Flossflower
Ageratum houstonianum
Fleece
1 – 15 Apr
10 May
8-10 wk
10 Jun
5 Jul
3 wk after
Sweet pea
Lathyrus odoratus
26 Mar – 16 Apr
29 May
5-8 wk
21 May
3 Jul
0 wk
Stock
Matthiola incana
26 Mar – 9 Apr
1 Jun
6-8 wk
21 May
13 Jul
0 wk
3 Jun
3 Jul
2 wk after
Wormwood
Artemisia absinthium
26 Mar – 9 Apr
2 May
6-8 wk
21 May
13 Jun
0 wk
3 Jun
3 Jun
2 wk after
Mexican sunflower
Tithonia rotundifolia
Fleece
29 Apr – 13 May
11 May
4-6 wk
10 Jun
3 wk after
Garden pansy
Viola × wittrockiana
12 – 26 Mar
18 May
8-10 wk
21 May
13 Jul
0 wk
31 May
3 Jul
1 wk after
Petunia
Petunia
18 Mar – 15 Apr
22 Apr
8-12 wk
10 Jun
17 Jun
3 wk after
Sweet Scabious
Scabiosa atropurpurea
1 – 15 Apr
2 May
6-8 wk
27 May
13 Jun
1 wk after
3 Jul
6 wk after
Common zinnia
Zinnia elegans
29 Apr – 13 May
26 May
4-6 wk
10 Jun
23 Jun
3 wk after
Common morning glory
Ipomoea purpurea
Fleece
6 – 20 May
2 Jun
3-5 wk
10 Jun
23 Jun
3 wk after
Garden cosmos
Cosmos bipinnatus
29 Apr – 13 May
27 May
4-6 wk
10 Jun
24 Jun
3 wk after
3 Jul
6 wk after
Scarlet milkweed
Asclepias curassavica
Fleece
1 – 29 Apr
18 May
8-12 wk
24 Jun
13 Jul
5 wk after
Bee balm
Monarda didyma
26 Feb – 26 Mar
18 Apr
8-12 wk
21 May
13 Jun
0 wk
15 Jun
4 wk after
Yarrow
Achillea millefolium
26 Mar – 9 Apr
2 Apr
6-8 wk
21 May
0 wk
3 Jun
2 wk after
Safflower
Carthamus tinctorius
21 May
13 Jun
0 wk
22 May
3 Jun
0 wk
Iceland poppy
Papaver nudicaule
Season too short
26 Mar – 9 Apr
22 May
6-8 wk
21 May
3 Jul
0 wk
5 May
23 Jun
2 wk before
Bishop's flower
Ammi majus
9 – 23 Apr
5 Jun
4-6 wk
21 May
3 Jul
0 wk
3 Jun
23 Jun
2 wk after
Drumsticks
Pycnosorus globosus
Fleece
18 Mar – 1 Apr
26 Mar
10-12 wk
10 Jun
3 wk after
Sunflower
Helianthus annuus
13 – 20 May
12 Jun
3-4 wk
10 Jun
3 Jul
3 wk after
15 Jun
23 Jun
4 wk after
China aster
Callistephus chinensis
15 – 29 Apr
1 Jun
6-8 wk
10 Jun
13 Jul
3 wk after
3 Jul
3 Jul
6 wk after
Annual phlox
Phlox drummondii
6 – 20 Apr
16 May
6-8 wk
1 Jun
27 Jun
2 wk after
3 Jul
6 wk after
Hollyhock
Alcea rosea
26 Mar – 9 Apr
6-8 wk
21 May
0 wk
3 Jun
2 wk after
Alpine delphinium
Delphinium elatum
26 Feb – 26 Mar
18 Apr
8-12 wk
21 May
13 Jun
0 wk
15 Jun
4 wk after
African marigold
Tagetes erecta
15 – 29 Apr
16 May
6-8 wk
10 Jun
27 Jun
3 wk after
Black-eyed Susan
Rudbeckia hirta
1 – 15 Apr
22 May
6-8 wk
27 May
3 Jul
1 wk after
3 Jul
6 wk after
Wood sage
Salvia nemorosa
12 – 26 Mar
8 Apr
8-10 wk
21 May
3 Jun
0 wk
15 Jun
4 wk after
Black-eyed susan vine
Thunbergia alata
Fleece
1 – 29 Apr
12 May
6-10 wk
10 Jun
23 Jun
3 wk after
California goldenpoppy
Eschscholzia californica
21 May
13 Jul
0 wk
22 May
3 Jul
0 wk
Painted tongue
Salpiglossis sinuata
1 – 15 Apr
29 Apr
8-10 wk
10 Jun
24 Jun
3 wk after
Water forget-me-not
Myosotis scorpioides
26 Mar – 9 Apr
2 May
6-8 wk
21 May
13 Jun
0 wk
3 Jun
3 Jun
2 wk after