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Method
Rel. frost
Last spring frost (0°C) 28 May Normal year · 20 years of data
Frost-free season 117 days 28 May – 22 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)
9 – 23 Apr
14 Jun
5-7 wk
28 May
19 Jul
0 wk
1 Jun
9 Jul
1 wk after
Broccoli
Brassica oleracea (Italica-gruppen)
16 – 30 Apr
26 Jun
4-6 wk
28 May
24 Jul
0 wk
1 Jun
14 Jul
1 wk after
Chili pepper
Capsicum annuum
Greenhouse
11 Mar – 8 Apr
31 Mar
8-12 wk
3 Jun
1 wk after
Curly Kale
Brassica oleracea (Curly Kale-gruppen)
9 – 23 Apr
9 Jun
5-7 wk
28 May
14 Jul
0 wk
28 May
4 Jul
0 wk
Garden cucumber
Cucumis sativus
Fleece
13 – 20 May
25 May
3-4 wk
10 Jun
15 Jun
2 wk after
Florence Fennel
Foeniculum vulgare
25 May – 1 Jun
4-5 wk
29 Jun
5 wk after
16 Jul
7 wk after
Butter bean
Phaseolus lunatus
Season too short
8 – 15 Jun
3-4 wk
6 Jul
6 wk after
Onion
Allium cepa (Cepa-gruppen)
5 Mar – 2 Apr
21 Mar
8-12 wk
28 May
0 wk
18 Jun
3 wk after
Onion (sets)
Allium cepa (Cepa-gruppen)
1 Jun
5 Jun
1 wk after
1 Jun
1 wk after
Maize
Zea mays
Fleece
6 – 13 May
15 May
3-4 wk
3 Jun
5 Jun
1 wk after
Swiss Chard
Beta vulgaris (Flavescens-gruppen)
2 – 9 May
3 Jul
3-4 wk
30 May
24 Jul
0 wk
18 Jun
14 Jul
3 wk after
Carrot
Daucus carota subsp. sativus var. sativus
28 May
4 Jul
0 wk
28 May
24 Jun
0 wk
Palm Kale
Brassica oleracea (Palm Kale-gruppen)
9 – 23 Apr
9 Jun
5-7 wk
28 May
14 Jul
0 wk
28 May
4 Jul
0 wk
Potato
Solanum tuberosum
2 – 16 May
19 May
4-6 wk
13 Jun
16 Jun
2 wk after
13 Jun
2 wk after
Ornamental Kale
Brassica oleracea (Ornamental-gruppen)
9 – 23 Apr
19 Jun
5-7 wk
28 May
24 Jul
0 wk
1 Jun
14 Jul
1 wk after
Pumpkin
Cucurbita pepo
1 – 8 Jun
3-4 wk
29 Jun
5 wk after
Beetroot
Beta vulgaris (Conditiva-gruppen)
2 – 9 May
22 May
3-4 wk
30 May
12 Jun
0 wk
18 Jun
3 wk after
Red Cabbage
Brassica oleracea (Red Cabbage-gruppen)
16 – 30 Apr
21 Jun
4-6 wk
28 May
19 Jul
0 wk
Lettuce
Lactuca sativa
30 Apr – 7 May
8 Jul
3-4 wk
28 May
29 Jul
0 wk
1 Jun
19 Jul
1 wk after
Savoy Cabbage
Brassica oleracea (Savoy Cabbage-gruppen)
16 – 30 Apr
21 Jun
4-6 wk
28 May
19 Jul
0 wk
Shallot (bulbs)
Allium cepa (Aggregatum-gruppen)
30 Apr – 14 May
26 May
2-4 wk
28 May
9 Jun
0 wk
28 May
30 May
0 wk
Shallot (sets)
Allium cepa (Aggregatum-gruppen)
1 Jun
5 Jun
1 wk after
1 Jun
1 wk after
Spinach
Spinacia oleracea
30 Apr – 7 May
23 Jul
3-4 wk
28 May
13 Aug
0 wk
24 May
3 Aug
1 wk before
Sweet potato
Ipomoea batatas
29 Jun – 13 Jul
4-6 wk
10 Aug
11 wk after
Garden tomato
Solanum lycopersicum
Fleece
8 – 22 Apr
24 Apr
6-8 wk
3 Jun
5 Jun
1 wk after
Tomatillo
Physalis ixocarpa
Common Bean
Phaseolus vulgaris
13 – 27 May
1 Jun
2-4 wk
10 Jun
15 Jun
2 wk after
16 Jul
7 wk after
White Cabbage
Brassica oleracea (White Cabbage-gruppen)
16 – 30 Apr
21 Jun
4-6 wk
28 May
19 Jul
0 wk
Garden pea
Pisum sativum
30 Apr – 7 May
23 Jun
3-4 wk
28 May
14 Jul
0 wk
1 Jun
4 Jul
1 wk after

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