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Method
Rel. frost
Last spring frost (0°C) 30 May Normal year · 20 years of data
Frost-free season 115 days 30 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)
11 – 25 Apr
14 Jun
5-7 wk
30 May
19 Jul
0 wk
31 May
9 Jul
0 wk
Broccoli
Brassica oleracea (Italica-gruppen)
18 Apr – 2 May
26 Jun
4-6 wk
30 May
24 Jul
0 wk
31 May
14 Jul
0 wk
Chili pepper
Capsicum annuum
Season too short
13 Mar – 10 Apr
8-12 wk
5 Jun
1 wk after
Curly Kale
Brassica oleracea (Curly Kale-gruppen)
11 – 25 Apr
9 Jun
5-7 wk
30 May
14 Jul
0 wk
30 May
4 Jul
0 wk
Garden cucumber
Cucumis sativus
Greenhouse
8 – 15 May
31 May
3-4 wk
5 Jun
21 Jun
1 wk after
Florence Fennel
Foeniculum vulgare
Fleece
8 – 15 May
6 Jun
4-5 wk
12 Jun
4 Jul
2 wk after
24 Jun
24 Jun
4 wk after
Butter bean
Phaseolus lunatus
Season too short
10 – 17 Jun
3-4 wk
8 Jul
6 wk after
Onion
Allium cepa (Cepa-gruppen)
Fleece
7 Mar – 4 Apr
21 Mar
8-12 wk
30 May
0 wk
5 Jun
1 wk after
Onion (sets)
Allium cepa (Cepa-gruppen)
31 May
0 wk
31 May
0 wk
Maize
Zea mays
Greenhouse
2 – 9 May
21 May
3-4 wk
30 May
11 Jun
0 wk
Swiss Chard
Beta vulgaris (Flavescens-gruppen)
4 – 11 May
3 Jul
3-4 wk
1 Jun
24 Jul
0 wk
12 Jun
14 Jul
2 wk after
Carrot
Daucus carota subsp. sativus var. sativus
30 May
4 Jul
0 wk
30 May
24 Jun
0 wk
Palm Kale
Brassica oleracea (Palm Kale-gruppen)
11 – 25 Apr
9 Jun
5-7 wk
30 May
14 Jul
0 wk
30 May
4 Jul
0 wk
Potato
Solanum tuberosum
28 Apr – 12 May
6 May
4-6 wk
9 Jun
1 wk after
9 Jun
1 wk after
Ornamental Kale
Brassica oleracea (Ornamental-gruppen)
11 – 25 Apr
19 Jun
5-7 wk
30 May
24 Jul
0 wk
31 May
14 Jul
0 wk
Pumpkin
Cucurbita pepo
Greenhouse
8 – 15 May
21 Jun
3-4 wk
5 Jun
12 Jul
1 wk after
Beetroot
Beta vulgaris (Conditiva-gruppen)
4 – 11 May
11 May
3-4 wk
1 Jun
1 Jun
0 wk
12 Jun
2 wk after
Red Cabbage
Brassica oleracea (Red Cabbage-gruppen)
18 Apr – 2 May
21 Jun
4-6 wk
30 May
19 Jul
0 wk
Lettuce
Lactuca sativa
2 – 9 May
8 Jul
3-4 wk
30 May
29 Jul
0 wk
31 May
19 Jul
0 wk
Savoy Cabbage
Brassica oleracea (Savoy Cabbage-gruppen)
18 Apr – 2 May
21 Jun
4-6 wk
30 May
19 Jul
0 wk
Shallot (bulbs)
Allium cepa (Aggregatum-gruppen)
2 – 16 May
19 May
2-4 wk
30 May
2 Jun
0 wk
30 May
0 wk
Shallot (sets)
Allium cepa (Aggregatum-gruppen)
31 May
0 wk
31 May
0 wk
Spinach
Spinacia oleracea
2 – 9 May
23 Jul
3-4 wk
30 May
13 Aug
0 wk
27 May
3 Aug
0 wk
Sweet potato
Ipomoea batatas
24 Jun – 8 Jul
4-6 wk
5 Aug
10 wk after
Garden tomato
Solanum lycopersicum
Greenhouse
4 – 18 Apr
30 Apr
6-8 wk
30 May
11 Jun
0 wk
Tomatillo
Physalis ixocarpa
Common Bean
Phaseolus vulgaris
Fleece
8 – 22 May
7 Jun
2-4 wk
5 Jun
21 Jun
1 wk after
24 Jun
4 wk after
White Cabbage
Brassica oleracea (White Cabbage-gruppen)
18 Apr – 2 May
21 Jun
4-6 wk
30 May
19 Jul
0 wk
Garden pea
Pisum sativum
2 – 9 May
23 Jun
3-4 wk
30 May
14 Jul
0 wk
31 May
4 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
Greenhouse
24 Apr – 8 May
30 May
4-6 wk
5 Jun
27 Jun
1 wk after
Lemon balm
Melissa officinalis
21 Mar – 4 Apr
19 May
8-10 wk
30 May
14 Jul
0 wk
24 Jun
4 Jul
4 wk after
Dill
Anethum graveolens
31 May
24 Jul
0 wk
Wild chives
Allium schoenoprasum
4 – 18 Apr
2 Jun
6-8 wk
30 May
14 Jul
0 wk
31 May
4 Jul
0 wk
Spearmint
Mentha spicata
7 Mar – 4 Apr
19 May
8-12 wk
30 May
14 Jul
0 wk
24 Jun
4 Jul
4 wk after
Coriander
Coriandrum sativum
30 May
13 Aug
0 wk
12 Jun
3 Aug
2 wk after
Garden sage
Salvia officinalis
23 Mar – 6 Apr
4 May
8-10 wk
1 Jun
29 Jun
0 wk
Common thyme
Thymus vulgaris
21 Mar – 4 Apr
9 May
8-10 wk
30 May
4 Jul
0 wk
Oregano
Origanum vulgare
4 – 18 Apr
23 May
6-8 wk
30 May
4 Jul
0 wk
24 Jun
24 Jun
4 wk after
Parsley
Petroselinum crispum
4 – 18 Apr
23 May
6-8 wk
30 May
4 Jul
0 wk
31 May
24 Jun
0 wk
Rosemary
Salvia rosmarinus
23 Feb – 23 Mar
3 Apr
10-14 wk
1 Jun
12 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
Greenhouse
8 – 15 May
6 Jun
3-4 wk
5 Jun
27 Jun
1 wk after
Cornflower
Centaurea cyanus
30 May
14 Jul
0 wk
31 May
4 Jul
0 wk
Statice
Limonium sinuatum
Fleece
27 Mar – 10 Apr
25 Apr
8-10 wk
5 Jun
20 Jun
1 wk after
Sweet William
Dianthus barbatus
4 – 18 Apr
6-8 wk
30 May
0 wk
9 Jun
1 wk after
Snow-on-the-mountain
Euphorbia marginata
Fleece
10 – 24 Apr
9 May
6-8 wk
5 Jun
20 Jun
1 wk after
19 Jul
7 wk after
Pinnate dahlia
Dahlia × pinnata
15 – 29 Apr
6 May
6-8 wk
10 Jun
17 Jun
2 wk after
Pinnate dahlia (tubers)
Dahlia × pinnata
Fleece
17 Apr – 15 May
1 Jun
4-8 wk
12 Jun
29 Jun
2 wk after
12 Jun
19 Jun
2 wk after
Foxglove
Digitalis purpurea
21 Mar – 4 Apr
8-10 wk
30 May
0 wk
12 Jun
2 wk after
Busy lizzie
Impatiens walleriana
8 Apr – 6 May
1 Jun
8-12 wk
1 Jul
27 Jul
5 wk after
Creeping zinnia
Sanvitalia procumbens
Fleece
10 – 24 Apr
19 May
6-8 wk
5 Jun
30 Jun
1 wk after
Hyacinth bean
Dolichos lablab
Season too short
1 – 15 May
4-6 wk
12 Jun
2 wk after
Chinese lantern
Physalis alkekengi
23 Mar – 6 Apr
19 Apr
8-10 wk
1 Jun
14 Jun
0 wk
Love in a mist
Nigella damascena
30 May
29 Jun
0 wk
31 May
19 Jun
0 wk
Strawflower
Xerochrysum bracteatum
Fleece
10 – 24 Apr
29 Apr
6-8 wk
5 Jun
10 Jun
1 wk after
19 Jul
7 wk after
Purple-top vervain
Verbena bonariensis
9 Mar – 6 Apr
19 Apr
8-12 wk
1 Jun
14 Jun
0 wk
Cardoon
Cynara cardunculus
Greenhouse
7 Mar – 4 Apr
20 Mar
8-12 wk
30 May
0 wk
Regal-foxtail
Ptilotus nobilis
Greenhouse
13 Mar – 10 Apr
22 Apr
8-12 wk
5 Jun
17 Jun
1 wk after
Globe amaranth
Gomphrena globosa
Greenhouse
10 – 24 Apr
6 May
6-8 wk
5 Jun
17 Jun
1 wk after
Corn poppy
Papaver rhoeas
30 May
14 Jul
0 wk
31 May
4 Jul
0 wk
Snapdragon
Antirrhinum majus
7 Mar – 4 Apr
9 May
8-12 wk
30 May
4 Jul
0 wk
9 Jun
24 Jun
1 wk after
Flossflower
Ageratum houstonianum
Fleece
3 – 17 Apr
5 May
8-10 wk
12 Jun
30 Jun
2 wk after
Sweet pea
Lathyrus odoratus
4 – 25 Apr
30 May
5-8 wk
30 May
4 Jul
0 wk
Stock
Matthiola incana
4 – 18 Apr
2 Jun
6-8 wk
30 May
14 Jul
0 wk
12 Jun
4 Jul
2 wk after
Wormwood
Artemisia absinthium
4 – 18 Apr
3 May
6-8 wk
30 May
14 Jun
0 wk
12 Jun
2 wk after
Mexican sunflower
Tithonia rotundifolia
Greenhouse
24 Apr – 8 May
15 May
4-6 wk
5 Jun
12 Jun
1 wk after
Garden pansy
Viola × wittrockiana
21 Mar – 4 Apr
19 May
8-10 wk
30 May
14 Jul
0 wk
9 Jun
4 Jul
1 wk after
Petunia
Petunia
Fleece
13 Mar – 10 Apr
25 Apr
8-12 wk
5 Jun
20 Jun
1 wk after
Sweet Scabious
Scabiosa atropurpurea
6 – 20 Apr
3 May
6-8 wk
1 Jun
14 Jun
0 wk
12 Jul
6 wk after
Common zinnia
Zinnia elegans
Fleece
24 Apr – 8 May
30 May
4-6 wk
5 Jun
27 Jun
1 wk after
Common morning glory
Ipomoea purpurea
Greenhouse
1 – 15 May
6 Jun
3-5 wk
5 Jun
27 Jun
1 wk after
Garden cosmos
Cosmos bipinnatus
Fleece
24 Apr – 8 May
1 Jun
4-6 wk
5 Jun
29 Jun
1 wk after
24 Jun
4 wk after
Scarlet milkweed
Asclepias curassavica
Greenhouse
20 Mar – 17 Apr
22 May
8-12 wk
12 Jun
17 Jul
2 wk after
Bee balm
Monarda didyma
7 Mar – 4 Apr
19 Apr
8-12 wk
30 May
14 Jun
0 wk
24 Jun
4 wk after
Yarrow
Achillea millefolium
4 – 18 Apr
6-8 wk
30 May
0 wk
12 Jun
2 wk after
Safflower
Carthamus tinctorius
30 May
14 Jun
0 wk
31 May
4 Jun
0 wk
Iceland poppy
Papaver nudicaule
Season too short
4 – 18 Apr
23 May
6-8 wk
30 May
4 Jul
0 wk
14 May
24 Jun
2 wk before
Bishop's flower
Ammi majus
18 Apr – 2 May
6 Jun
4-6 wk
30 May
4 Jul
0 wk
12 Jun
24 Jun
2 wk after
Drumsticks
Pycnosorus globosus
Greenhouse
13 – 27 Mar
31 Mar
10-12 wk
5 Jun
9 Jun
1 wk after
Sunflower
Helianthus annuus
15 – 22 May
11 Jun
3-4 wk
12 Jun
2 Jul
2 wk after
24 Jun
4 wk after
China aster
Callistephus chinensis
17 Apr – 1 May
31 May
6-8 wk
12 Jun
12 Jul
2 wk after
12 Jul
6 wk after
Annual phlox
Phlox drummondii
10 – 24 Apr
10 May
6-8 wk
5 Jun
21 Jun
1 wk after
12 Jul
6 wk after
Hollyhock
Alcea rosea
4 – 18 Apr
6-8 wk
30 May
0 wk
12 Jun
2 wk after
Alpine delphinium
Delphinium elatum
7 Mar – 4 Apr
19 Apr
8-12 wk
30 May
14 Jun
0 wk
24 Jun
4 wk after
African marigold
Tagetes erecta
Fleece
10 – 24 Apr
19 May
6-8 wk
5 Jun
30 Jun
1 wk after
Black-eyed Susan
Rudbeckia hirta
6 – 20 Apr
21 May
6-8 wk
1 Jun
2 Jul
0 wk
12 Jul
6 wk after
Wood sage
Salvia nemorosa
21 Mar – 4 Apr
9 Apr
8-10 wk
30 May
4 Jun
0 wk
24 Jun
4 wk after
Black-eyed susan vine
Thunbergia alata
Greenhouse
27 Mar – 24 Apr
16 May
6-10 wk
5 Jun
27 Jun
1 wk after
California goldenpoppy
Eschscholzia californica
30 May
14 Jul
0 wk
31 May
4 Jul
0 wk
Painted tongue
Salpiglossis sinuata
Fleece
27 Mar – 10 Apr
9 May
8-10 wk
5 Jun
4 Jul
1 wk after
Water forget-me-not
Myosotis scorpioides
4 – 18 Apr
3 May
6-8 wk
30 May
14 Jun
0 wk
12 Jun
2 wk after