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Method
Rel. frost
Last spring frost (0°C) 23 May Normal year · 20 years of data
Frost-free season 122 days 23 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)
4 – 18 Apr
13 Jun
5-7 wk
23 May
18 Jul
0 wk
24 May
8 Jul
0 wk
Broccoli
Brassica oleracea (Italica-gruppen)
11 – 25 Apr
25 Jun
4-6 wk
23 May
23 Jul
0 wk
24 May
13 Jul
0 wk
Chili pepper
Capsicum annuum
Greenhouse
11 Mar – 8 Apr
13 Apr
8-12 wk
3 Jun
8 Jun
2 wk after
Curly Kale
Brassica oleracea (Curly Kale-gruppen)
4 – 18 Apr
8 Jun
5-7 wk
23 May
13 Jul
0 wk
23 May
3 Jul
0 wk
Garden cucumber
Cucumis sativus
29 May – 5 Jun
3-4 wk
26 Jun
5 wk after
Florence Fennel
Foeniculum vulgare
22 – 29 May
24 May
4-5 wk
26 Jun
5 wk after
5 Jul
6 wk after
Butter bean
Phaseolus lunatus
Season too short
5 – 12 Jun
3-4 wk
3 Jul
6 wk after
Onion
Allium cepa (Cepa-gruppen)
28 Feb – 28 Mar
26 Mar
8-12 wk
23 May
0 wk
5 Jun
2 wk after
Onion (sets)
Allium cepa (Cepa-gruppen)
24 May
10 Jun
0 wk
24 May
31 May
0 wk
Maize
Zea mays
Fleece
6 – 13 May
28 May
3-4 wk
3 Jun
18 Jun
2 wk after
Swiss Chard
Beta vulgaris (Flavescens-gruppen)
1 – 8 May
2 Jul
3-4 wk
29 May
23 Jul
1 wk after
5 Jun
13 Jul
2 wk after
Carrot
Daucus carota subsp. sativus var. sativus
23 May
3 Jul
0 wk
23 May
23 Jun
0 wk
Palm Kale
Brassica oleracea (Palm Kale-gruppen)
4 – 18 Apr
8 Jun
5-7 wk
23 May
13 Jul
0 wk
23 May
3 Jul
0 wk
Potato
Solanum tuberosum
21 Apr – 5 May
21 May
4-6 wk
2 Jun
18 Jun
1 wk after
2 Jun
8 Jun
1 wk after
Ornamental Kale
Brassica oleracea (Ornamental-gruppen)
4 – 18 Apr
18 Jun
5-7 wk
23 May
23 Jul
0 wk
24 May
13 Jul
0 wk
Pumpkin
Cucurbita pepo
29 May – 5 Jun
12 Jun
3-4 wk
26 Jun
3 Jul
5 wk after
Beetroot
Beta vulgaris (Conditiva-gruppen)
1 – 8 May
10 Jun
3-4 wk
29 May
1 Jul
1 wk after
5 Jun
21 Jun
2 wk after
Red Cabbage
Brassica oleracea (Red Cabbage-gruppen)
11 – 25 Apr
20 Jun
4-6 wk
23 May
18 Jul
0 wk
Lettuce
Lactuca sativa
25 Apr – 2 May
7 Jul
3-4 wk
23 May
28 Jul
0 wk
24 May
18 Jul
0 wk
Savoy Cabbage
Brassica oleracea (Savoy Cabbage-gruppen)
11 – 25 Apr
20 Jun
4-6 wk
23 May
18 Jul
0 wk
Shallot (bulbs)
Allium cepa (Aggregatum-gruppen)
25 Apr – 9 May
30 May
2-4 wk
23 May
13 Jun
0 wk
23 May
3 Jun
0 wk
Shallot (sets)
Allium cepa (Aggregatum-gruppen)
24 May
10 Jun
0 wk
24 May
31 May
0 wk
Spinach
Spinacia oleracea
25 Apr – 2 May
22 Jul
3-4 wk
23 May
12 Aug
0 wk
20 May
2 Aug
0 wk
Sweet potato
Ipomoea batatas
17 Jun – 1 Jul
4-6 wk
29 Jul
10 wk after
Garden tomato
Solanum lycopersicum
Fleece
8 – 22 Apr
7 May
6-8 wk
3 Jun
18 Jun
2 wk after
Tomatillo
Physalis ixocarpa
Common Bean
Phaseolus vulgaris
15 – 29 May
14 Jun
2-4 wk
12 Jun
28 Jun
3 wk after
5 Jul
6 wk after
White Cabbage
Brassica oleracea (White Cabbage-gruppen)
11 – 25 Apr
20 Jun
4-6 wk
23 May
18 Jul
0 wk
Garden pea
Pisum sativum
25 Apr – 2 May
22 Jun
3-4 wk
23 May
13 Jul
0 wk
24 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
15 – 29 May
21 May
4-6 wk
26 Jun
5 wk after
Lemon balm
Melissa officinalis
14 – 28 Mar
18 May
8-10 wk
23 May
13 Jul
0 wk
17 Jun
3 Jul
4 wk after
Dill
Anethum graveolens
24 May
23 Jul
0 wk
Wild chives
Allium schoenoprasum
28 Mar – 11 Apr
1 Jun
6-8 wk
23 May
13 Jul
0 wk
24 May
3 Jul
0 wk
Spearmint
Mentha spicata
28 Feb – 28 Mar
18 May
8-12 wk
23 May
13 Jul
0 wk
17 Jun
3 Jul
4 wk after
Coriander
Coriandrum sativum
23 May
12 Aug
0 wk
5 Jun
2 Aug
2 wk after
Garden sage
Salvia officinalis
20 Mar – 3 Apr
3 May
8-10 wk
29 May
28 Jun
1 wk after
Common thyme
Thymus vulgaris
14 – 28 Mar
8 May
8-10 wk
23 May
3 Jul
0 wk
Oregano
Origanum vulgare
28 Mar – 11 Apr
22 May
6-8 wk
23 May
3 Jul
0 wk
17 Jun
23 Jun
4 wk after
Parsley
Petroselinum crispum
28 Mar – 11 Apr
22 May
6-8 wk
23 May
3 Jul
0 wk
24 May
23 Jun
0 wk
Rosemary
Salvia rosmarinus
20 Feb – 20 Mar
28 Mar
10-14 wk
29 May
6 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
29 May – 5 Jun
3-4 wk
26 Jun
5 wk after
Cornflower
Centaurea cyanus
23 May
13 Jul
0 wk
24 May
3 Jul
0 wk
Statice
Limonium sinuatum
3 – 17 Apr
26 Apr
8-10 wk
12 Jun
21 Jun
3 wk after
Sweet William
Dianthus barbatus
28 Mar – 11 Apr
6-8 wk
23 May
0 wk
2 Jun
1 wk after
Snow-on-the-mountain
Euphorbia marginata
17 Apr – 1 May
10 May
6-8 wk
12 Jun
21 Jun
3 wk after
29 Jul
10 wk after
Pinnate dahlia
Dahlia × pinnata
12 – 26 Apr
13 May
6-8 wk
7 Jun
24 Jun
2 wk after
Pinnate dahlia (tubers)
Dahlia × pinnata
22 Apr – 20 May
27 May
4-8 wk
17 Jun
24 Jun
4 wk after
17 Jun
4 wk after
Foxglove
Digitalis purpurea
14 – 28 Mar
8-10 wk
23 May
0 wk
5 Jun
2 wk after
Busy lizzie
Impatiens walleriana
3 Apr – 1 May
12 Jun
8-12 wk
26 Jun
7 Aug
5 wk after
Creeping zinnia
Sanvitalia procumbens
17 Apr – 1 May
20 May
6-8 wk
12 Jun
1 Jul
3 wk after
Hyacinth bean
Dolichos lablab
Season too short
1 – 15 May
4-6 wk
12 Jun
3 wk after
Chinese lantern
Physalis alkekengi
20 Mar – 3 Apr
18 Apr
8-10 wk
29 May
13 Jun
1 wk after
Love in a mist
Nigella damascena
23 May
28 Jun
0 wk
24 May
18 Jun
0 wk
Strawflower
Xerochrysum bracteatum
17 Apr – 1 May
30 Apr
6-8 wk
12 Jun
3 wk after
29 Jul
10 wk after
Purple-top vervain
Verbena bonariensis
6 Mar – 3 Apr
18 Apr
8-12 wk
29 May
13 Jun
1 wk after
Cardoon
Cynara cardunculus
Fleece
11 Mar – 8 Apr
19 Mar
8-12 wk
3 Jun
2 wk after
Regal-foxtail
Ptilotus nobilis
3 Apr – 1 May
13 Apr
8-12 wk
26 Jun
5 wk after
Globe amaranth
Gomphrena globosa
1 – 15 May
6-8 wk
26 Jun
5 wk after
Corn poppy
Papaver rhoeas
23 May
13 Jul
0 wk
24 May
3 Jul
0 wk
Snapdragon
Antirrhinum majus
28 Feb – 28 Mar
8 May
8-12 wk
23 May
3 Jul
0 wk
2 Jun
23 Jun
1 wk after
Flossflower
Ageratum houstonianum
17 Apr – 1 May
6 May
8-10 wk
26 Jun
1 Jul
5 wk after
Sweet pea
Lathyrus odoratus
28 Mar – 18 Apr
29 May
5-8 wk
23 May
3 Jul
0 wk
Stock
Matthiola incana
28 Mar – 11 Apr
1 Jun
6-8 wk
23 May
13 Jul
0 wk
5 Jun
3 Jul
2 wk after
Wormwood
Artemisia absinthium
28 Mar – 11 Apr
2 May
6-8 wk
23 May
13 Jun
0 wk
5 Jun
2 wk after
Mexican sunflower
Tithonia rotundifolia
Fleece
1 – 15 May
10 May
4-6 wk
12 Jun
3 wk after
Garden pansy
Viola × wittrockiana
14 – 28 Mar
18 May
8-10 wk
23 May
13 Jul
0 wk
2 Jun
3 Jul
1 wk after
Petunia
Petunia
20 Mar – 17 Apr
26 Apr
8-12 wk
12 Jun
21 Jun
3 wk after
Sweet Scabious
Scabiosa atropurpurea
3 – 17 Apr
2 May
6-8 wk
29 May
13 Jun
1 wk after
5 Jul
6 wk after
Common zinnia
Zinnia elegans
1 – 15 May
25 May
4-6 wk
12 Jun
22 Jun
3 wk after
Common morning glory
Ipomoea purpurea
22 May – 5 Jun
28 May
3-5 wk
26 Jun
5 wk after
Garden cosmos
Cosmos bipinnatus
1 – 15 May
27 May
4-6 wk
12 Jun
24 Jun
3 wk after
5 Jul
6 wk after
Scarlet milkweed
Asclepias curassavica
Fleece
3 Apr – 1 May
17 May
8-12 wk
26 Jun
12 Jul
5 wk after
Bee balm
Monarda didyma
28 Feb – 28 Mar
18 Apr
8-12 wk
23 May
13 Jun
0 wk
17 Jun
4 wk after
Yarrow
Achillea millefolium
28 Mar – 11 Apr
2 Apr
6-8 wk
23 May
0 wk
5 Jun
2 wk after
Safflower
Carthamus tinctorius
23 May
13 Jun
0 wk
24 May
3 Jun
0 wk
Iceland poppy
Papaver nudicaule
Season too short
28 Mar – 11 Apr
22 May
6-8 wk
23 May
3 Jul
0 wk
7 May
23 Jun
2 wk before
Bishop's flower
Ammi majus
11 – 25 Apr
5 Jun
4-6 wk
23 May
3 Jul
0 wk
5 Jun
23 Jun
2 wk after
Drumsticks
Pycnosorus globosus
Fleece
20 Mar – 3 Apr
26 Mar
10-12 wk
12 Jun
3 wk after
Sunflower
Helianthus annuus
15 – 22 May
5 Jun
3-4 wk
12 Jun
26 Jun
3 wk after
17 Jun
4 wk after
China aster
Callistephus chinensis
17 Apr – 1 May
25 May
6-8 wk
12 Jun
6 Jul
3 wk after
5 Jul
6 wk after
Annual phlox
Phlox drummondii
8 – 22 Apr
20 May
6-8 wk
3 Jun
1 Jul
2 wk after
5 Jul
6 wk after
Hollyhock
Alcea rosea
28 Mar – 11 Apr
6-8 wk
23 May
0 wk
5 Jun
2 wk after
Alpine delphinium
Delphinium elatum
28 Feb – 28 Mar
18 Apr
8-12 wk
23 May
13 Jun
0 wk
17 Jun
4 wk after
African marigold
Tagetes erecta
17 Apr – 1 May
20 May
6-8 wk
12 Jun
1 Jul
3 wk after
Black-eyed Susan
Rudbeckia hirta
3 – 17 Apr
15 May
6-8 wk
29 May
26 Jun
1 wk after
5 Jul
6 wk after
Wood sage
Salvia nemorosa
14 – 28 Mar
8 Apr
8-10 wk
23 May
3 Jun
0 wk
17 Jun
4 wk after
Black-eyed susan vine
Thunbergia alata
17 Apr – 15 May
7 May
6-10 wk
26 Jun
5 wk after
California goldenpoppy
Eschscholzia californica
23 May
13 Jul
0 wk
24 May
3 Jul
0 wk
Painted tongue
Salpiglossis sinuata
3 – 17 Apr
26 Apr
8-10 wk
12 Jun
21 Jun
3 wk after
Water forget-me-not
Myosotis scorpioides
28 Mar – 11 Apr
2 May
6-8 wk
23 May
13 Jun
0 wk
5 Jun
2 wk after