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Method
Rel. frost
Last spring frost (0°C) 22 May Normal year · 20 years of data
Frost-free season 111 days 22 May – 10 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)
3 – 17 Apr
10 Jun
5-7 wk
22 May
15 Jul
0 wk
23 May
5 Jul
0 wk
Broccoli
Brassica oleracea (Italica-gruppen)
10 – 24 Apr
22 Jun
4-6 wk
22 May
20 Jul
0 wk
23 May
10 Jul
0 wk
Chili pepper
Capsicum annuum
Season too short
5 Mar – 2 Apr
15 Mar
8-12 wk
28 May
1 wk after
Curly Kale
Brassica oleracea (Curly Kale-gruppen)
3 – 17 Apr
5 Jun
5-7 wk
22 May
10 Jul
0 wk
22 May
30 Jun
0 wk
Garden cucumber
Cucumis sativus
Greenhouse
30 Apr – 7 May
6 Jun
3-4 wk
28 May
27 Jun
1 wk after
Florence Fennel
Foeniculum vulgare
Fleece
30 Apr – 7 May
1 Jun
4-5 wk
4 Jun
29 Jun
2 wk after
16 Jun
19 Jun
4 wk after
Butter bean
Phaseolus lunatus
Season too short
2 – 9 Jun
3-4 wk
30 Jun
6 wk after
Onion
Allium cepa (Cepa-gruppen)
Fleece
27 Feb – 27 Mar
15 Mar
8-12 wk
22 May
0 wk
28 May
1 wk after
Onion (sets)
Allium cepa (Cepa-gruppen)
23 May
0 wk
23 May
0 wk
Maize
Zea mays
Greenhouse
24 Apr – 1 May
27 May
3-4 wk
22 May
17 Jun
0 wk
Swiss Chard
Beta vulgaris (Flavescens-gruppen)
26 Apr – 3 May
28 Jun
3-4 wk
24 May
19 Jul
0 wk
4 Jun
9 Jul
2 wk after
Carrot
Daucus carota subsp. sativus var. sativus
22 May
30 Jun
0 wk
22 May
20 Jun
0 wk
Palm Kale
Brassica oleracea (Palm Kale-gruppen)
3 – 17 Apr
5 Jun
5-7 wk
22 May
10 Jul
0 wk
22 May
30 Jun
0 wk
Potato
Solanum tuberosum
Fleece
11 – 25 Apr
14 May
4-6 wk
23 May
11 Jun
0 wk
23 May
1 Jun
0 wk
Ornamental Kale
Brassica oleracea (Ornamental-gruppen)
3 – 17 Apr
15 Jun
5-7 wk
22 May
20 Jul
0 wk
23 May
10 Jul
0 wk
Pumpkin
Cucurbita pepo
Fleece
7 – 14 May
11 Jun
3-4 wk
4 Jun
2 Jul
2 wk after
Beetroot
Beta vulgaris (Conditiva-gruppen)
26 Apr – 3 May
7 May
3-4 wk
24 May
28 May
0 wk
4 Jun
2 wk after
Red Cabbage
Brassica oleracea (Red Cabbage-gruppen)
10 – 24 Apr
17 Jun
4-6 wk
22 May
15 Jul
0 wk
Lettuce
Lactuca sativa
24 Apr – 1 May
4 Jul
3-4 wk
22 May
25 Jul
0 wk
23 May
15 Jul
0 wk
Savoy Cabbage
Brassica oleracea (Savoy Cabbage-gruppen)
10 – 24 Apr
17 Jun
4-6 wk
22 May
15 Jul
0 wk
Shallot (bulbs)
Allium cepa (Aggregatum-gruppen)
24 Apr – 8 May
12 May
2-4 wk
22 May
26 May
0 wk
22 May
0 wk
Shallot (sets)
Allium cepa (Aggregatum-gruppen)
23 May
0 wk
23 May
0 wk
Spinach
Spinacia oleracea
24 Apr – 1 May
19 Jul
3-4 wk
22 May
9 Aug
0 wk
19 May
30 Jul
0 wk
Sweet potato
Ipomoea batatas
16 – 30 Jun
4-6 wk
28 Jul
10 wk after
Garden tomato
Solanum lycopersicum
Greenhouse
27 Mar – 10 Apr
6 May
6-8 wk
22 May
17 Jun
0 wk
Tomatillo
Physalis ixocarpa
Common Bean
Phaseolus vulgaris
Fleece
30 Apr – 14 May
13 Jun
2-4 wk
28 May
27 Jun
1 wk after
16 Jun
17 Jun
4 wk after
White Cabbage
Brassica oleracea (White Cabbage-gruppen)
10 – 24 Apr
17 Jun
4-6 wk
22 May
15 Jul
0 wk
Garden pea
Pisum sativum
24 Apr – 1 May
19 Jun
3-4 wk
22 May
10 Jul
0 wk
23 May
30 Jun
0 wk

Herbs

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