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Method
Rel. frost
Last spring frost (0°C) 25 May Normal year · 20 years of data
Frost-free season 120 days 25 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)
6 – 20 Apr
14 Jun
5-7 wk
25 May
19 Jul
0 wk
29 May
9 Jul
1 wk after
Broccoli
Brassica oleracea (Italica-gruppen)
13 – 27 Apr
26 Jun
4-6 wk
25 May
24 Jul
0 wk
29 May
14 Jul
1 wk after
Chili pepper
Capsicum annuum
Greenhouse
17 Mar – 14 Apr
2 Apr
8-12 wk
9 Jun
2 wk after
Curly Kale
Brassica oleracea (Curly Kale-gruppen)
6 – 20 Apr
9 Jun
5-7 wk
25 May
14 Jul
0 wk
25 May
4 Jul
0 wk
Garden cucumber
Cucumis sativus
Fleece
24 – 31 May
27 May
3-4 wk
21 Jun
4 wk after
Florence Fennel
Foeniculum vulgare
Fleece
17 – 24 May
2 Jun
4-5 wk
21 Jun
30 Jun
4 wk after
29 Jun
5 wk after
Butter bean
Phaseolus lunatus
Season too short
14 – 21 Jun
3-4 wk
12 Jul
7 wk after
Onion
Allium cepa (Cepa-gruppen)
2 – 30 Mar
23 Mar
8-12 wk
25 May
0 wk
15 Jun
3 wk after
Onion (sets)
Allium cepa (Cepa-gruppen)
29 May
7 Jun
1 wk after
29 May
1 wk after
Maize
Zea mays
Fleece
12 – 19 May
17 May
3-4 wk
9 Jun
2 wk after
Swiss Chard
Beta vulgaris (Flavescens-gruppen)
5 – 12 May
29 Jun
3-4 wk
2 Jun
20 Jul
1 wk after
15 Jun
10 Jul
3 wk after
Carrot
Daucus carota subsp. sativus var. sativus
25 May
4 Jul
0 wk
25 May
24 Jun
0 wk
Palm Kale
Brassica oleracea (Palm Kale-gruppen)
6 – 20 Apr
9 Jun
5-7 wk
25 May
14 Jul
0 wk
25 May
4 Jul
0 wk
Potato
Solanum tuberosum
29 Apr – 13 May
20 May
4-6 wk
10 Jun
17 Jun
2 wk after
10 Jun
2 wk after
Ornamental Kale
Brassica oleracea (Ornamental-gruppen)
6 – 20 Apr
19 Jun
5-7 wk
25 May
24 Jul
0 wk
29 May
14 Jul
1 wk after
Pumpkin
Cucurbita pepo
Fleece
24 – 31 May
19 Jun
3-4 wk
21 Jun
10 Jul
4 wk after
Beetroot
Beta vulgaris (Conditiva-gruppen)
5 – 12 May
30 May
3-4 wk
2 Jun
20 Jun
1 wk after
15 Jun
3 wk after
Red Cabbage
Brassica oleracea (Red Cabbage-gruppen)
13 – 27 Apr
21 Jun
4-6 wk
25 May
19 Jul
0 wk
Lettuce
Lactuca sativa
27 Apr – 4 May
8 Jul
3-4 wk
25 May
29 Jul
0 wk
29 May
19 Jul
1 wk after
Savoy Cabbage
Brassica oleracea (Savoy Cabbage-gruppen)
13 – 27 Apr
21 Jun
4-6 wk
25 May
19 Jul
0 wk
Shallot (bulbs)
Allium cepa (Aggregatum-gruppen)
27 Apr – 11 May
26 May
2-4 wk
25 May
9 Jun
0 wk
25 May
30 May
0 wk
Shallot (sets)
Allium cepa (Aggregatum-gruppen)
29 May
7 Jun
1 wk after
29 May
1 wk after
Spinach
Spinacia oleracea
27 Apr – 4 May
23 Jul
3-4 wk
25 May
13 Aug
0 wk
21 May
3 Aug
1 wk before
Sweet potato
Ipomoea batatas
26 Jun – 10 Jul
4-6 wk
7 Aug
11 wk after
Garden tomato
Solanum lycopersicum
Fleece
14 – 28 Apr
26 Apr
6-8 wk
9 Jun
2 wk after
Tomatillo
Physalis ixocarpa
Common Bean
Phaseolus vulgaris
24 May – 7 Jun
3 Jun
2-4 wk
21 Jun
4 wk after
13 Jul
7 wk after
White Cabbage
Brassica oleracea (White Cabbage-gruppen)
13 – 27 Apr
21 Jun
4-6 wk
25 May
19 Jul
0 wk
Garden pea
Pisum sativum
27 Apr – 4 May
23 Jun
3-4 wk
25 May
14 Jul
0 wk
29 May
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
10 – 24 May
28 May
4-6 wk
21 Jun
25 Jun
4 wk after
Lemon balm
Melissa officinalis
16 – 30 Mar
19 May
8-10 wk
25 May
14 Jul
0 wk
29 Jun
4 Jul
5 wk after
Dill
Anethum graveolens
29 May
20 Jul
1 wk after
Wild chives
Allium schoenoprasum
30 Mar – 13 Apr
2 Jun
6-8 wk
25 May
14 Jul
0 wk
29 May
4 Jul
1 wk after
Spearmint
Mentha spicata
2 – 30 Mar
19 May
8-12 wk
25 May
14 Jul
0 wk
29 Jun
4 Jul
5 wk after
Coriander
Coriandrum sativum
25 May
9 Aug
0 wk
15 Jun
30 Jul
3 wk after
Garden sage
Salvia officinalis
24 Mar – 7 Apr
4 May
8-10 wk
2 Jun
29 Jun
1 wk after
Common thyme
Thymus vulgaris
16 – 30 Mar
9 May
8-10 wk
25 May
4 Jul
0 wk
Oregano
Origanum vulgare
30 Mar – 13 Apr
23 May
6-8 wk
25 May
4 Jul
0 wk
29 Jun
5 wk after
Parsley
Petroselinum crispum
30 Mar – 13 Apr
23 May
6-8 wk
25 May
4 Jul
0 wk
29 May
24 Jun
1 wk after
Rosemary
Salvia rosmarinus
24 Feb – 24 Mar
31 Mar
10-14 wk
2 Jun
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
Fleece
24 – 31 May
4 Jun
3-4 wk
21 Jun
25 Jun
4 wk after
Cornflower
Centaurea cyanus
25 May
14 Jul
0 wk
29 May
4 Jul
1 wk after
Statice
Limonium sinuatum
12 – 26 Apr
23 Apr
8-10 wk
21 Jun
4 wk after
Sweet William
Dianthus barbatus
30 Mar – 13 Apr
6-8 wk
25 May
0 wk
10 Jun
2 wk after
Snow-on-the-mountain
Euphorbia marginata
26 Apr – 10 May
7 May
6-8 wk
21 Jun
4 wk after
7 Aug
11 wk after
Pinnate dahlia
Dahlia × pinnata
18 Apr – 2 May
13 May
6-8 wk
13 Jun
24 Jun
3 wk after
Pinnate dahlia (tubers)
Dahlia × pinnata
4 May – 1 Jun
27 May
4-8 wk
29 Jun
5 wk after
29 Jun
5 wk after
Foxglove
Digitalis purpurea
16 – 30 Mar
8-10 wk
25 May
0 wk
15 Jun
3 wk after
Busy lizzie
Impatiens walleriana
14 Apr – 12 May
15 Jun
8-12 wk
7 Jul
10 Aug
6 wk after
Creeping zinnia
Sanvitalia procumbens
26 Apr – 10 May
17 May
6-8 wk
21 Jun
28 Jun
4 wk after
Hyacinth bean
Dolichos lablab
Season too short
10 – 24 May
4-6 wk
21 Jun
4 wk after
Chinese lantern
Physalis alkekengi
24 Mar – 7 Apr
15 Apr
8-10 wk
2 Jun
10 Jun
1 wk after
Love in a mist
Nigella damascena
25 May
29 Jun
0 wk
29 May
19 Jun
1 wk after
Strawflower
Xerochrysum bracteatum
Fleece
14 – 28 Apr
8 May
6-8 wk
9 Jun
19 Jun
2 wk after
23 Jul
8 wk after
Purple-top vervain
Verbena bonariensis
10 Mar – 7 Apr
15 Apr
8-12 wk
2 Jun
10 Jun
1 wk after
Cardoon
Cynara cardunculus
Fleece
17 Mar – 14 Apr
20 Mar
8-12 wk
9 Jun
2 wk after
Regal-foxtail
Ptilotus nobilis
Fleece
29 Mar – 26 Apr
20 Apr
8-12 wk
21 Jun
4 wk after
Globe amaranth
Gomphrena globosa
Fleece
26 Apr – 10 May
4 May
6-8 wk
21 Jun
4 wk after
Corn poppy
Papaver rhoeas
25 May
14 Jul
0 wk
29 May
4 Jul
1 wk after
Snapdragon
Antirrhinum majus
2 – 30 Mar
9 May
8-12 wk
25 May
4 Jul
0 wk
10 Jun
24 Jun
2 wk after
Flossflower
Ageratum houstonianum
Fleece
12 – 26 Apr
14 May
8-10 wk
21 Jun
9 Jul
4 wk after
Sweet pea
Lathyrus odoratus
30 Mar – 20 Apr
30 May
5-8 wk
25 May
4 Jul
0 wk
Stock
Matthiola incana
30 Mar – 13 Apr
2 Jun
6-8 wk
25 May
14 Jul
0 wk
15 Jun
4 Jul
3 wk after
Wormwood
Artemisia absinthium
30 Mar – 13 Apr
3 May
6-8 wk
25 May
14 Jun
0 wk
15 Jun
3 wk after
Mexican sunflower
Tithonia rotundifolia
Fleece
10 – 24 May
13 May
4-6 wk
21 Jun
4 wk after
Garden pansy
Viola × wittrockiana
16 – 30 Mar
19 May
8-10 wk
25 May
14 Jul
0 wk
10 Jun
4 Jul
2 wk after
Petunia
Petunia
29 Mar – 26 Apr
23 Apr
8-12 wk
21 Jun
4 wk after
Sweet Scabious
Scabiosa atropurpurea
7 – 21 Apr
29 Apr
6-8 wk
2 Jun
10 Jun
1 wk after
13 Jul
7 wk after
Common zinnia
Zinnia elegans
10 – 24 May
28 May
4-6 wk
21 Jun
25 Jun
4 wk after
Common morning glory
Ipomoea purpurea
Fleece
17 – 31 May
4 Jun
3-5 wk
21 Jun
25 Jun
4 wk after
Garden cosmos
Cosmos bipinnatus
10 – 24 May
27 May
4-6 wk
21 Jun
24 Jun
4 wk after
13 Jul
7 wk after
Scarlet milkweed
Asclepias curassavica
Fleece
14 Apr – 12 May
20 May
8-12 wk
7 Jul
15 Jul
6 wk after
Bee balm
Monarda didyma
2 – 30 Mar
19 Apr
8-12 wk
25 May
14 Jun
0 wk
29 Jun
5 wk after
Yarrow
Achillea millefolium
30 Mar – 13 Apr
3 Apr
6-8 wk
25 May
0 wk
15 Jun
3 wk after
Safflower
Carthamus tinctorius
25 May
14 Jun
0 wk
29 May
4 Jun
1 wk after
Iceland poppy
Papaver nudicaule
Season too short
30 Mar – 13 Apr
23 May
6-8 wk
25 May
4 Jul
0 wk
7 May
24 Jun
3 wk before
Bishop's flower
Ammi majus
13 – 27 Apr
6 Jun
4-6 wk
25 May
4 Jul
0 wk
15 Jun
24 Jun
3 wk after
Drumsticks
Pycnosorus globosus
Greenhouse
17 – 31 Mar
31 Mar
10-12 wk
9 Jun
9 Jun
2 wk after
Sunflower
Helianthus annuus
24 – 31 May
8 Jun
3-4 wk
21 Jun
29 Jun
4 wk after
29 Jun
5 wk after
China aster
Callistephus chinensis
26 Apr – 10 May
28 May
6-8 wk
21 Jun
9 Jul
4 wk after
13 Jul
7 wk after
Annual phlox
Phlox drummondii
14 – 28 Apr
17 May
6-8 wk
9 Jun
28 Jun
2 wk after
13 Jul
7 wk after
Hollyhock
Alcea rosea
30 Mar – 13 Apr
6-8 wk
25 May
0 wk
15 Jun
3 wk after
Alpine delphinium
Delphinium elatum
2 – 30 Mar
19 Apr
8-12 wk
25 May
14 Jun
0 wk
29 Jun
5 wk after
African marigold
Tagetes erecta
26 Apr – 10 May
17 May
6-8 wk
21 Jun
28 Jun
4 wk after
Black-eyed Susan
Rudbeckia hirta
7 – 21 Apr
18 May
6-8 wk
2 Jun
29 Jun
1 wk after
13 Jul
7 wk after
Wood sage
Salvia nemorosa
16 – 30 Mar
9 Apr
8-10 wk
25 May
4 Jun
0 wk
29 Jun
5 wk after
Black-eyed susan vine
Thunbergia alata
Fleece
12 Apr – 10 May
14 May
6-10 wk
21 Jun
25 Jun
4 wk after
California goldenpoppy
Eschscholzia californica
25 May
14 Jul
0 wk
29 May
4 Jul
1 wk after
Painted tongue
Salpiglossis sinuata
12 – 26 Apr
23 Apr
8-10 wk
21 Jun
4 wk after
Water forget-me-not
Myosotis scorpioides
30 Mar – 13 Apr
3 May
6-8 wk
25 May
14 Jun
0 wk
15 Jun
3 wk after