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Method
Rel. frost
Last spring frost (0°C) 22 May Normal year · 20 years of data
Frost-free season 99 days 22 May – 29 Aug
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)
3 – 17 Apr
11 Jun
5-7 wk
22 May
16 Jul
0 wk
23 May
6 Jul
0 wk
Broccoli
Brassica oleracea (Italica-gruppen)
10 – 24 Apr
23 Jun
4-6 wk
22 May
21 Jul
0 wk
23 May
11 Jul
0 wk
Chili pepper
Capsicum annuum
Greenhouse
5 Mar – 2 Apr
27 Mar
8-12 wk
28 May
1 wk after
Curly Kale
Brassica oleracea (Curly Kale-gruppen)
3 – 17 Apr
6 Jun
5-7 wk
22 May
11 Jul
0 wk
22 May
1 Jul
0 wk
Garden cucumber
Cucumis sativus
Fleece
7 – 14 May
21 May
3-4 wk
4 Jun
11 Jun
2 wk after
Florence Fennel
Foeniculum vulgare
Fleece
30 Apr – 7 May
22 May
4-5 wk
4 Jun
19 Jun
2 wk after
16 Jun
4 wk after
Butter bean
Phaseolus lunatus
Season too short
2 – 9 Jun
3-4 wk
30 Jun
6 wk after
Onion
Allium cepa (Cepa-gruppen)
27 Feb – 27 Mar
14 Mar
8-12 wk
22 May
0 wk
4 Jun
2 wk after
Onion (sets)
Allium cepa (Cepa-gruppen)
23 May
29 May
0 wk
23 May
0 wk
Maize
Zea mays
Fleece
30 Apr – 7 May
11 May
3-4 wk
28 May
1 Jun
1 wk after
Swiss Chard
Beta vulgaris (Flavescens-gruppen)
26 Apr – 3 May
18 Jun
3-4 wk
24 May
9 Jul
0 wk
4 Jun
29 Jun
2 wk after
Carrot
Daucus carota subsp. sativus var. sativus
22 May
1 Jul
0 wk
22 May
21 Jun
0 wk
Palm Kale
Brassica oleracea (Palm Kale-gruppen)
3 – 17 Apr
6 Jun
5-7 wk
22 May
11 Jul
0 wk
22 May
1 Jul
0 wk
Potato
Solanum tuberosum
20 Apr – 4 May
14 May
4-6 wk
1 Jun
11 Jun
1 wk after
1 Jun
1 Jun
1 wk after
Ornamental Kale
Brassica oleracea (Ornamental-gruppen)
3 – 17 Apr
16 Jun
5-7 wk
22 May
21 Jul
0 wk
23 May
11 Jul
0 wk
Pumpkin
Cucurbita pepo
Fleece
7 – 14 May
12 Jun
3-4 wk
4 Jun
3 Jul
2 wk after
Beetroot
Beta vulgaris (Conditiva-gruppen)
26 Apr – 3 May
21 May
3-4 wk
24 May
11 Jun
0 wk
4 Jun
2 wk after
Red Cabbage
Brassica oleracea (Red Cabbage-gruppen)
10 – 24 Apr
18 Jun
4-6 wk
22 May
16 Jul
0 wk
Lettuce
Lactuca sativa
24 Apr – 1 May
5 Jul
3-4 wk
22 May
26 Jul
0 wk
23 May
16 Jul
0 wk
Savoy Cabbage
Brassica oleracea (Savoy Cabbage-gruppen)
10 – 24 Apr
18 Jun
4-6 wk
22 May
16 Jul
0 wk
Shallot (bulbs)
Allium cepa (Aggregatum-gruppen)
24 Apr – 8 May
20 May
2-4 wk
22 May
3 Jun
0 wk
22 May
24 May
0 wk
Shallot (sets)
Allium cepa (Aggregatum-gruppen)
23 May
29 May
0 wk
23 May
0 wk
Spinach
Spinacia oleracea
24 Apr – 1 May
20 Jul
3-4 wk
22 May
10 Aug
0 wk
19 May
31 Jul
0 wk
Sweet potato
Ipomoea batatas
16 – 30 Jun
4-6 wk
28 Jul
10 wk after
Garden tomato
Solanum lycopersicum
Fleece
2 – 16 Apr
20 Apr
6-8 wk
28 May
1 Jun
1 wk after
Tomatillo
Physalis ixocarpa
Common Bean
Phaseolus vulgaris
7 – 21 May
28 May
2-4 wk
4 Jun
11 Jun
2 wk after
4 Jul
6 wk after
White Cabbage
Brassica oleracea (White Cabbage-gruppen)
10 – 24 Apr
18 Jun
4-6 wk
22 May
16 Jul
0 wk
Garden pea
Pisum sativum
24 Apr – 1 May
20 Jun
3-4 wk
22 May
11 Jul
0 wk
23 May
1 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
23 Apr – 7 May
21 May
4-6 wk
4 Jun
18 Jun
2 wk after
Lemon balm
Melissa officinalis
13 – 27 Mar
16 May
8-10 wk
22 May
11 Jul
0 wk
16 Jun
1 Jul
4 wk after
Dill
Anethum graveolens
23 May
9 Jul
0 wk
Wild chives
Allium schoenoprasum
27 Mar – 10 Apr
30 May
6-8 wk
22 May
11 Jul
0 wk
23 May
1 Jul
0 wk
Spearmint
Mentha spicata
27 Feb – 27 Mar
16 May
8-12 wk
22 May
11 Jul
0 wk
16 Jun
1 Jul
4 wk after
Coriander
Coriandrum sativum
22 May
29 Jul
0 wk
4 Jun
19 Jul
2 wk after
Garden sage
Salvia officinalis
15 – 29 Mar
1 May
8-10 wk
24 May
26 Jun
0 wk
Common thyme
Thymus vulgaris
13 – 27 Mar
6 May
8-10 wk
22 May
1 Jul
0 wk
Oregano
Origanum vulgare
27 Mar – 10 Apr
20 May
6-8 wk
22 May
1 Jul
0 wk
16 Jun
21 Jun
4 wk after
Parsley
Petroselinum crispum
27 Mar – 10 Apr
20 May
6-8 wk
22 May
1 Jul
0 wk
23 May
21 Jun
0 wk
Rosemary
Salvia rosmarinus
15 Feb – 15 Mar
12 Mar
10-14 wk
24 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
7 – 14 May
28 May
3-4 wk
4 Jun
18 Jun
2 wk after
Cornflower
Centaurea cyanus
22 May
11 Jul
0 wk
23 May
1 Jul
0 wk
Statice
Limonium sinuatum
26 Mar – 9 Apr
13 Apr
8-10 wk
4 Jun
8 Jun
2 wk after
Sweet William
Dianthus barbatus
27 Mar – 10 Apr
6-8 wk
22 May
0 wk
1 Jun
1 wk after
Snow-on-the-mountain
Euphorbia marginata
9 – 23 Apr
27 Apr
6-8 wk
4 Jun
8 Jun
2 wk after
28 Jul
10 wk after
Pinnate dahlia
Dahlia × pinnata
7 – 21 Apr
6 May
6-8 wk
2 Jun
17 Jun
2 wk after
Pinnate dahlia (tubers)
Dahlia × pinnata
21 Apr – 19 May
20 May
4-8 wk
16 Jun
17 Jun
4 wk after
16 Jun
4 wk after
Foxglove
Digitalis purpurea
13 – 27 Mar
8-10 wk
22 May
0 wk
4 Jun
2 wk after
Busy lizzie
Impatiens walleriana
31 Mar – 28 Apr
8 Jun
8-12 wk
23 Jun
3 Aug
5 wk after
Creeping zinnia
Sanvitalia procumbens
9 – 23 Apr
7 May
6-8 wk
4 Jun
18 Jun
2 wk after
Hyacinth bean
Dolichos lablab
Season too short
23 Apr – 7 May
4-6 wk
4 Jun
2 wk after
Chinese lantern
Physalis alkekengi
15 – 29 Mar
4 Apr
8-10 wk
24 May
30 May
0 wk
Love in a mist
Nigella damascena
22 May
26 Jun
0 wk
23 May
16 Jun
0 wk
Strawflower
Xerochrysum bracteatum
9 – 23 Apr
17 Apr
6-8 wk
4 Jun
2 wk after
28 Jul
10 wk after
Purple-top vervain
Verbena bonariensis
1 – 29 Mar
4 Apr
8-12 wk
24 May
30 May
0 wk
Cardoon
Cynara cardunculus
Fleece
5 Mar – 2 Apr
17 Mar
8-12 wk
28 May
1 wk after
Regal-foxtail
Ptilotus nobilis
Fleece
12 Mar – 9 Apr
13 Apr
8-12 wk
4 Jun
8 Jun
2 wk after
Globe amaranth
Gomphrena globosa
Fleece
9 – 23 Apr
27 Apr
6-8 wk
4 Jun
8 Jun
2 wk after
Corn poppy
Papaver rhoeas
22 May
11 Jul
0 wk
23 May
1 Jul
0 wk
Snapdragon
Antirrhinum majus
27 Feb – 27 Mar
6 May
8-12 wk
22 May
1 Jul
0 wk
1 Jun
21 Jun
1 wk after
Flossflower
Ageratum houstonianum
14 – 28 Apr
23 Apr
8-10 wk
23 Jun
5 wk after
Sweet pea
Lathyrus odoratus
27 Mar – 17 Apr
27 May
5-8 wk
22 May
1 Jul
0 wk
Stock
Matthiola incana
27 Mar – 10 Apr
30 May
6-8 wk
22 May
11 Jul
0 wk
4 Jun
1 Jul
2 wk after
Wormwood
Artemisia absinthium
27 Mar – 10 Apr
30 Apr
6-8 wk
22 May
11 Jun
0 wk
4 Jun
2 wk after
Mexican sunflower
Tithonia rotundifolia
Fleece
23 Apr – 7 May
6 May
4-6 wk
4 Jun
2 wk after
Garden pansy
Viola × wittrockiana
13 – 27 Mar
16 May
8-10 wk
22 May
11 Jul
0 wk
1 Jun
1 Jul
1 wk after
Petunia
Petunia
12 Mar – 9 Apr
13 Apr
8-12 wk
4 Jun
8 Jun
2 wk after
Sweet Scabious
Scabiosa atropurpurea
29 Mar – 12 Apr
18 Apr
6-8 wk
24 May
30 May
0 wk
4 Jul
6 wk after
Common zinnia
Zinnia elegans
23 Apr – 7 May
21 May
4-6 wk
4 Jun
18 Jun
2 wk after
Common morning glory
Ipomoea purpurea
Fleece
30 Apr – 14 May
28 May
3-5 wk
4 Jun
18 Jun
2 wk after
Garden cosmos
Cosmos bipinnatus
23 Apr – 7 May
20 May
4-6 wk
4 Jun
17 Jun
2 wk after
4 Jul
6 wk after
Scarlet milkweed
Asclepias curassavica
Fleece
31 Mar – 28 Apr
13 May
8-12 wk
23 Jun
8 Jul
5 wk after
Bee balm
Monarda didyma
27 Feb – 27 Mar
16 Apr
8-12 wk
22 May
11 Jun
0 wk
16 Jun
4 wk after
Yarrow
Achillea millefolium
27 Mar – 10 Apr
31 Mar
6-8 wk
22 May
0 wk
4 Jun
2 wk after
Safflower
Carthamus tinctorius
22 May
11 Jun
0 wk
23 May
1 Jun
0 wk
Iceland poppy
Papaver nudicaule
Season too short
27 Mar – 10 Apr
20 May
6-8 wk
22 May
1 Jul
0 wk
6 May
21 Jun
2 wk before
Bishop's flower
Ammi majus
10 – 24 Apr
3 Jun
4-6 wk
22 May
1 Jul
0 wk
4 Jun
21 Jun
2 wk after
Drumsticks
Pycnosorus globosus
Fleece
12 – 26 Mar
19 Mar
10-12 wk
4 Jun
2 wk after
Sunflower
Helianthus annuus
7 – 14 May
20 May
3-4 wk
4 Jun
10 Jun
2 wk after
16 Jun
4 wk after
China aster
Callistephus chinensis
9 – 23 Apr
9 May
6-8 wk
4 Jun
20 Jun
2 wk after
4 Jul
6 wk after
Annual phlox
Phlox drummondii
2 – 16 Apr
7 May
6-8 wk
28 May
18 Jun
1 wk after
4 Jul
6 wk after
Hollyhock
Alcea rosea
27 Mar – 10 Apr
6-8 wk
22 May
0 wk
4 Jun
2 wk after
Alpine delphinium
Delphinium elatum
27 Feb – 27 Mar
16 Apr
8-12 wk
22 May
11 Jun
0 wk
16 Jun
4 wk after
African marigold
Tagetes erecta
9 – 23 Apr
7 May
6-8 wk
4 Jun
18 Jun
2 wk after
Black-eyed Susan
Rudbeckia hirta
29 Mar – 12 Apr
29 Apr
6-8 wk
24 May
10 Jun
0 wk
4 Jul
6 wk after
Wood sage
Salvia nemorosa
13 – 27 Mar
6 Apr
8-10 wk
22 May
1 Jun
0 wk
16 Jun
4 wk after
Black-eyed susan vine
Thunbergia alata
Fleece
26 Mar – 23 Apr
7 May
6-10 wk
4 Jun
18 Jun
2 wk after
California goldenpoppy
Eschscholzia californica
22 May
11 Jul
0 wk
23 May
1 Jul
0 wk
Painted tongue
Salpiglossis sinuata
26 Mar – 9 Apr
31 Mar
8-10 wk
4 Jun
2 wk after
Water forget-me-not
Myosotis scorpioides
27 Mar – 10 Apr
30 Apr
6-8 wk
22 May
11 Jun
0 wk
4 Jun
2 wk after