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Method
Rel. frost
Last spring frost (0°C) 13 May Normal year · 20 years of data
Frost-free season 128 days 13 May – 18 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)
25 Mar – 8 Apr
12 Jun
5-7 wk
13 May
17 Jul
0 wk
14 May
7 Jul
0 wk
Broccoli
Brassica oleracea (Italica-gruppen)
1 – 15 Apr
24 Jun
4-6 wk
13 May
22 Jul
0 wk
14 May
12 Jul
0 wk
Chili pepper
Capsicum annuum
Greenhouse
28 Feb – 28 Mar
1 Apr
8-12 wk
23 May
27 May
1 wk after
Curly Kale
Brassica oleracea (Curly Kale-gruppen)
25 Mar – 8 Apr
7 Jun
5-7 wk
13 May
12 Jul
0 wk
13 May
2 Jul
0 wk
Garden cucumber
Cucumis sativus
Fleece
5 – 12 May
26 May
3-4 wk
2 Jun
16 Jun
3 wk after
Florence Fennel
Foeniculum vulgare
14 – 21 May
24 May
4-5 wk
18 Jun
21 Jun
5 wk after
25 Jun
6 wk after
Butter bean
Phaseolus lunatus
Season too short
26 May – 2 Jun
3-4 wk
23 Jun
6 wk after
Onion
Allium cepa (Cepa-gruppen)
18 Feb – 18 Mar
18 Mar
8-12 wk
13 May
13 May
0 wk
26 May
2 wk after
Onion (sets)
Allium cepa (Cepa-gruppen)
14 May
2 Jun
0 wk
14 May
23 May
0 wk
Maize
Zea mays
Fleece
25 Apr – 2 May
16 May
3-4 wk
23 May
6 Jun
1 wk after
Swiss Chard
Beta vulgaris (Flavescens-gruppen)
20 – 27 Apr
1 Jul
3-4 wk
18 May
22 Jul
1 wk after
26 May
12 Jul
2 wk after
Carrot
Daucus carota subsp. sativus var. sativus
13 May
2 Jul
0 wk
13 May
22 Jun
0 wk
Palm Kale
Brassica oleracea (Palm Kale-gruppen)
25 Mar – 8 Apr
7 Jun
5-7 wk
13 May
12 Jul
0 wk
13 May
2 Jul
0 wk
Potato
Solanum tuberosum
11 – 25 Apr
18 May
4-6 wk
23 May
15 Jun
1 wk after
23 May
5 Jun
1 wk after
Ornamental Kale
Brassica oleracea (Ornamental-gruppen)
25 Mar – 8 Apr
17 Jun
5-7 wk
13 May
22 Jul
0 wk
14 May
12 Jul
0 wk
Pumpkin
Cucurbita pepo
21 – 28 May
31 May
3-4 wk
18 Jun
21 Jun
5 wk after
Beetroot
Beta vulgaris (Conditiva-gruppen)
20 – 27 Apr
25 May
3-4 wk
18 May
15 Jun
1 wk after
26 May
5 Jun
2 wk after
Red Cabbage
Brassica oleracea (Red Cabbage-gruppen)
1 – 15 Apr
19 Jun
4-6 wk
13 May
17 Jul
0 wk
Lettuce
Lactuca sativa
15 – 22 Apr
6 Jul
3-4 wk
13 May
27 Jul
0 wk
14 May
17 Jul
0 wk
Savoy Cabbage
Brassica oleracea (Savoy Cabbage-gruppen)
1 – 15 Apr
19 Jun
4-6 wk
13 May
17 Jul
0 wk
Shallot (bulbs)
Allium cepa (Aggregatum-gruppen)
15 – 29 Apr
25 May
2-4 wk
13 May
8 Jun
0 wk
13 May
29 May
0 wk
Shallot (sets)
Allium cepa (Aggregatum-gruppen)
14 May
2 Jun
0 wk
14 May
23 May
0 wk
Spinach
Spinacia oleracea
15 – 22 Apr
21 Jul
3-4 wk
13 May
11 Aug
0 wk
10 May
1 Aug
0 wk
Sweet potato
Ipomoea batatas
7 – 21 Jun
4-6 wk
19 Jul
10 wk after
Garden tomato
Solanum lycopersicum
Fleece
28 Mar – 11 Apr
25 Apr
6-8 wk
23 May
6 Jun
1 wk after
Tomatillo
Physalis ixocarpa
Common Bean
Phaseolus vulgaris
5 – 19 May
2 Jun
2-4 wk
2 Jun
16 Jun
3 wk after
25 Jun
6 wk after
White Cabbage
Brassica oleracea (White Cabbage-gruppen)
1 – 15 Apr
19 Jun
4-6 wk
13 May
17 Jul
0 wk
Garden pea
Pisum sativum
15 – 22 Apr
21 Jun
3-4 wk
13 May
12 Jul
0 wk
14 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
7 – 21 May
9 May
4-6 wk
18 Jun
5 wk after
Lemon balm
Melissa officinalis
4 – 18 Mar
17 May
8-10 wk
13 May
12 Jul
0 wk
7 Jun
2 Jul
4 wk after
Dill
Anethum graveolens
14 May
22 Jul
0 wk
Wild chives
Allium schoenoprasum
18 Mar – 1 Apr
31 May
6-8 wk
13 May
12 Jul
0 wk
14 May
2 Jul
0 wk
Spearmint
Mentha spicata
18 Feb – 18 Mar
17 May
8-12 wk
13 May
12 Jul
0 wk
7 Jun
2 Jul
4 wk after
Coriander
Coriandrum sativum
13 May
11 Aug
0 wk
26 May
1 Aug
2 wk after
Garden sage
Salvia officinalis
9 – 23 Mar
2 May
8-10 wk
18 May
27 Jun
1 wk after
Common thyme
Thymus vulgaris
4 – 18 Mar
7 May
8-10 wk
13 May
2 Jul
0 wk
Oregano
Origanum vulgare
18 Mar – 1 Apr
21 May
6-8 wk
13 May
2 Jul
0 wk
7 Jun
22 Jun
4 wk after
Parsley
Petroselinum crispum
18 Mar – 1 Apr
21 May
6-8 wk
13 May
2 Jul
0 wk
14 May
22 Jun
0 wk
Rosemary
Salvia rosmarinus
9 Feb – 9 Mar
31 Mar
10-14 wk
18 May
9 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
21 – 28 May
3-4 wk
18 Jun
5 wk after
Cornflower
Centaurea cyanus
13 May
12 Jul
0 wk
14 May
2 Jul
0 wk
Statice
Limonium sinuatum
24 Mar – 7 Apr
23 Apr
8-10 wk
2 Jun
18 Jun
3 wk after
Sweet William
Dianthus barbatus
18 Mar – 1 Apr
6-8 wk
13 May
0 wk
23 May
1 wk after
Snow-on-the-mountain
Euphorbia marginata
7 – 21 Apr
7 May
6-8 wk
2 Jun
18 Jun
3 wk after
19 Jul
10 wk after
Pinnate dahlia
Dahlia × pinnata
31 Mar – 14 Apr
11 May
6-8 wk
26 May
22 Jun
2 wk after
Pinnate dahlia (tubers)
Dahlia × pinnata
12 Apr – 10 May
25 May
4-8 wk
7 Jun
22 Jun
4 wk after
7 Jun
12 Jun
4 wk after
Foxglove
Digitalis purpurea
4 – 18 Mar
8-10 wk
13 May
0 wk
26 May
2 wk after
Busy lizzie
Impatiens walleriana
26 Mar – 23 Apr
11 Jun
8-12 wk
18 Jun
6 Aug
5 wk after
Creeping zinnia
Sanvitalia procumbens
7 – 21 Apr
17 May
6-8 wk
2 Jun
28 Jun
3 wk after
Hyacinth bean
Dolichos lablab
Greenhouse
21 Apr – 5 May
24 Apr
4-6 wk
2 Jun
3 wk after
Chinese lantern
Physalis alkekengi
9 – 23 Mar
17 Apr
8-10 wk
18 May
12 Jun
1 wk after
Love in a mist
Nigella damascena
13 May
27 Jun
0 wk
14 May
17 Jun
0 wk
Strawflower
Xerochrysum bracteatum
7 – 21 Apr
27 Apr
6-8 wk
2 Jun
8 Jun
3 wk after
19 Jul
10 wk after
Purple-top vervain
Verbena bonariensis
23 Feb – 23 Mar
17 Apr
8-12 wk
18 May
12 Jun
1 wk after
Cardoon
Cynara cardunculus
Fleece
28 Feb – 28 Mar
18 Mar
8-12 wk
23 May
1 wk after
Regal-foxtail
Ptilotus nobilis
Fleece
10 Mar – 7 Apr
16 Apr
8-12 wk
2 Jun
11 Jun
3 wk after
Globe amaranth
Gomphrena globosa
Fleece
7 – 21 Apr
30 Apr
6-8 wk
2 Jun
11 Jun
3 wk after
Corn poppy
Papaver rhoeas
13 May
12 Jul
0 wk
14 May
2 Jul
0 wk
Snapdragon
Antirrhinum majus
18 Feb – 18 Mar
7 May
8-12 wk
13 May
2 Jul
0 wk
23 May
22 Jun
1 wk after
Flossflower
Ageratum houstonianum
9 – 23 Apr
3 May
8-10 wk
18 Jun
28 Jun
5 wk after
Sweet pea
Lathyrus odoratus
18 Mar – 8 Apr
28 May
5-8 wk
13 May
2 Jul
0 wk
Stock
Matthiola incana
18 Mar – 1 Apr
31 May
6-8 wk
13 May
12 Jul
0 wk
26 May
2 Jul
2 wk after
Wormwood
Artemisia absinthium
18 Mar – 1 Apr
1 May
6-8 wk
13 May
12 Jun
0 wk
26 May
2 Jun
2 wk after
Mexican sunflower
Tithonia rotundifolia
Fleece
21 Apr – 5 May
9 May
4-6 wk
2 Jun
6 Jun
3 wk after
Garden pansy
Viola × wittrockiana
4 – 18 Mar
17 May
8-10 wk
13 May
12 Jul
0 wk
23 May
2 Jul
1 wk after
Petunia
Petunia
10 Mar – 7 Apr
23 Apr
8-12 wk
2 Jun
18 Jun
3 wk after
Sweet Scabious
Scabiosa atropurpurea
23 Mar – 6 Apr
1 May
6-8 wk
18 May
12 Jun
1 wk after
25 Jun
6 wk after
Common zinnia
Zinnia elegans
21 Apr – 5 May
24 May
4-6 wk
2 Jun
21 Jun
3 wk after
Common morning glory
Ipomoea purpurea
14 – 28 May
16 May
3-5 wk
18 Jun
5 wk after
Garden cosmos
Cosmos bipinnatus
21 Apr – 5 May
25 May
4-6 wk
2 Jun
22 Jun
3 wk after
25 Jun
6 wk after
Scarlet milkweed
Asclepias curassavica
2 – 30 Apr
1 May
8-12 wk
25 Jun
26 Jun
6 wk after
Bee balm
Monarda didyma
18 Feb – 18 Mar
17 Apr
8-12 wk
13 May
12 Jun
0 wk
7 Jun
4 wk after
Yarrow
Achillea millefolium
18 Mar – 1 Apr
1 Apr
6-8 wk
13 May
13 May
0 wk
26 May
2 wk after
Safflower
Carthamus tinctorius
13 May
12 Jun
0 wk
14 May
2 Jun
0 wk
Iceland poppy
Papaver nudicaule
Season too short
18 Mar – 1 Apr
21 May
6-8 wk
13 May
2 Jul
0 wk
27 Apr
22 Jun
2 wk before
Bishop's flower
Ammi majus
1 – 15 Apr
4 Jun
4-6 wk
13 May
2 Jul
0 wk
26 May
22 Jun
2 wk after
Drumsticks
Pycnosorus globosus
Fleece
10 – 24 Mar
24 Mar
10-12 wk
2 Jun
2 Jun
3 wk after
Sunflower
Helianthus annuus
5 – 12 May
8 Jun
3-4 wk
2 Jun
29 Jun
3 wk after
7 Jun
19 Jun
4 wk after
China aster
Callistephus chinensis
7 – 21 Apr
28 May
6-8 wk
2 Jun
9 Jul
3 wk after
25 Jun
29 Jun
6 wk after
Annual phlox
Phlox drummondii
28 Mar – 11 Apr
17 May
6-8 wk
23 May
28 Jun
1 wk after
25 Jun
6 wk after
Hollyhock
Alcea rosea
18 Mar – 1 Apr
6-8 wk
13 May
0 wk
26 May
2 wk after
Alpine delphinium
Delphinium elatum
18 Feb – 18 Mar
17 Apr
8-12 wk
13 May
12 Jun
0 wk
7 Jun
4 wk after
African marigold
Tagetes erecta
7 – 21 Apr
17 May
6-8 wk
2 Jun
28 Jun
3 wk after
Black-eyed Susan
Rudbeckia hirta
23 Mar – 6 Apr
18 May
6-8 wk
18 May
29 Jun
1 wk after
25 Jun
6 wk after
Wood sage
Salvia nemorosa
4 – 18 Mar
7 Apr
8-10 wk
13 May
2 Jun
0 wk
7 Jun
4 wk after
Black-eyed susan vine
Thunbergia alata
9 Apr – 7 May
25 Apr
6-10 wk
18 Jun
5 wk after
California goldenpoppy
Eschscholzia californica
13 May
12 Jul
0 wk
14 May
2 Jul
0 wk
Painted tongue
Salpiglossis sinuata
24 Mar – 7 Apr
26 Apr
8-10 wk
2 Jun
21 Jun
3 wk after
Water forget-me-not
Myosotis scorpioides
18 Mar – 1 Apr
1 May
6-8 wk
13 May
12 Jun
0 wk
26 May
2 Jun
2 wk after