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Method
Rel. frost
Last spring frost (0°C) 27 May Normal year · 20 years of data
Frost-free season 104 days 27 May – 8 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)
8 – 22 Apr
14 Jun
5-7 wk
27 May
19 Jul
0 wk
31 May
9 Jul
1 wk after
Broccoli
Brassica oleracea (Italica-gruppen)
15 – 29 Apr
26 Jun
4-6 wk
27 May
24 Jul
0 wk
31 May
14 Jul
1 wk after
Chili pepper
Capsicum annuum
Greenhouse
10 Mar – 7 Apr
6 Apr
8-12 wk
2 Jun
1 wk after
Curly Kale
Brassica oleracea (Curly Kale-gruppen)
8 – 22 Apr
9 Jun
5-7 wk
27 May
14 Jul
0 wk
27 May
4 Jul
0 wk
Garden cucumber
Cucumis sativus
Fleece
12 – 19 May
31 May
3-4 wk
9 Jun
21 Jun
2 wk after
Florence Fennel
Foeniculum vulgare
Fleece
5 – 12 May
28 May
4-5 wk
9 Jun
25 Jun
2 wk after
1 Jul
5 wk after
Butter bean
Phaseolus lunatus
Season too short
7 – 14 Jun
3-4 wk
5 Jul
6 wk after
Onion
Allium cepa (Cepa-gruppen)
4 Mar – 1 Apr
23 Mar
8-12 wk
27 May
0 wk
17 Jun
3 wk after
Onion (sets)
Allium cepa (Cepa-gruppen)
31 May
7 Jun
1 wk after
31 May
1 wk after
Maize
Zea mays
Fleece
5 – 12 May
21 May
3-4 wk
2 Jun
11 Jun
1 wk after
Swiss Chard
Beta vulgaris (Flavescens-gruppen)
1 – 8 May
24 Jun
3-4 wk
29 May
15 Jul
0 wk
17 Jun
5 Jul
3 wk after
Carrot
Daucus carota subsp. sativus var. sativus
27 May
4 Jul
0 wk
27 May
24 Jun
0 wk
Palm Kale
Brassica oleracea (Palm Kale-gruppen)
8 – 22 Apr
9 Jun
5-7 wk
27 May
14 Jul
0 wk
27 May
4 Jul
0 wk
Potato
Solanum tuberosum
1 – 15 May
20 May
4-6 wk
12 Jun
17 Jun
2 wk after
12 Jun
2 wk after
Ornamental Kale
Brassica oleracea (Ornamental-gruppen)
8 – 22 Apr
19 Jun
5-7 wk
27 May
24 Jul
0 wk
31 May
14 Jul
1 wk after
Pumpkin
Cucurbita pepo
Fleece
12 – 19 May
20 Jun
3-4 wk
9 Jun
11 Jul
2 wk after
Beetroot
Beta vulgaris (Conditiva-gruppen)
1 – 8 May
1 Jun
3-4 wk
29 May
22 Jun
0 wk
17 Jun
3 wk after
Red Cabbage
Brassica oleracea (Red Cabbage-gruppen)
15 – 29 Apr
21 Jun
4-6 wk
27 May
19 Jul
0 wk
Lettuce
Lactuca sativa
29 Apr – 6 May
8 Jul
3-4 wk
27 May
29 Jul
0 wk
31 May
19 Jul
1 wk after
Savoy Cabbage
Brassica oleracea (Savoy Cabbage-gruppen)
15 – 29 Apr
21 Jun
4-6 wk
27 May
19 Jul
0 wk
Shallot (bulbs)
Allium cepa (Aggregatum-gruppen)
29 Apr – 13 May
27 May
2-4 wk
27 May
10 Jun
0 wk
27 May
31 May
0 wk
Shallot (sets)
Allium cepa (Aggregatum-gruppen)
31 May
7 Jun
1 wk after
31 May
1 wk after
Spinach
Spinacia oleracea
29 Apr – 6 May
23 Jul
3-4 wk
27 May
13 Aug
0 wk
23 May
3 Aug
1 wk before
Sweet potato
Ipomoea batatas
28 Jun – 12 Jul
4-6 wk
9 Aug
11 wk after
Garden tomato
Solanum lycopersicum
Fleece
7 – 21 Apr
30 Apr
6-8 wk
2 Jun
11 Jun
1 wk after
Tomatillo
Physalis ixocarpa
Common Bean
Phaseolus vulgaris
12 – 26 May
7 Jun
2-4 wk
9 Jun
21 Jun
2 wk after
15 Jul
7 wk after
White Cabbage
Brassica oleracea (White Cabbage-gruppen)
15 – 29 Apr
21 Jun
4-6 wk
27 May
19 Jul
0 wk
Garden pea
Pisum sativum
29 Apr – 6 May
23 Jun
3-4 wk
27 May
14 Jul
0 wk
31 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
28 Apr – 12 May
29 May
4-6 wk
9 Jun
26 Jun
2 wk after
Lemon balm
Melissa officinalis
18 Mar – 1 Apr
19 May
8-10 wk
27 May
14 Jul
0 wk
1 Jul
4 Jul
5 wk after
Dill
Anethum graveolens
31 May
15 Jul
1 wk after
Wild chives
Allium schoenoprasum
1 – 15 Apr
2 Jun
6-8 wk
27 May
14 Jul
0 wk
31 May
4 Jul
1 wk after
Spearmint
Mentha spicata
4 Mar – 1 Apr
19 May
8-12 wk
27 May
14 Jul
0 wk
1 Jul
4 Jul
5 wk after
Coriander
Coriandrum sativum
27 May
4 Aug
0 wk
17 Jun
25 Jul
3 wk after
Garden sage
Salvia officinalis
20 Mar – 3 Apr
4 May
8-10 wk
29 May
29 Jun
0 wk
Common thyme
Thymus vulgaris
18 Mar – 1 Apr
9 May
8-10 wk
27 May
4 Jul
0 wk
Oregano
Origanum vulgare
1 – 15 Apr
23 May
6-8 wk
27 May
4 Jul
0 wk
1 Jul
5 wk after
Parsley
Petroselinum crispum
1 – 15 Apr
23 May
6-8 wk
27 May
4 Jul
0 wk
31 May
24 Jun
1 wk after
Rosemary
Salvia rosmarinus
20 Feb – 20 Mar
26 Mar
10-14 wk
29 May
4 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
12 – 19 May
5 Jun
3-4 wk
9 Jun
26 Jun
2 wk after
Cornflower
Centaurea cyanus
27 May
14 Jul
0 wk
31 May
4 Jul
1 wk after
Statice
Limonium sinuatum
31 Mar – 14 Apr
22 Apr
8-10 wk
9 Jun
17 Jun
2 wk after
Sweet William
Dianthus barbatus
1 – 15 Apr
6-8 wk
27 May
0 wk
12 Jun
2 wk after
Snow-on-the-mountain
Euphorbia marginata
14 – 28 Apr
6 May
6-8 wk
9 Jun
17 Jun
2 wk after
9 Aug
11 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
6 May – 3 Jun
27 May
4-8 wk
1 Jul
5 wk after
1 Jul
5 wk after
Foxglove
Digitalis purpurea
18 Mar – 1 Apr
8-10 wk
27 May
0 wk
17 Jun
3 wk after
Busy lizzie
Impatiens walleriana
5 Apr – 3 May
16 Jun
8-12 wk
28 Jun
11 Aug
5 wk after
Creeping zinnia
Sanvitalia procumbens
14 – 28 Apr
16 May
6-8 wk
9 Jun
27 Jun
2 wk after
Hyacinth bean
Dolichos lablab
Season too short
28 Apr – 12 May
29 Apr
4-6 wk
9 Jun
2 wk after
Chinese lantern
Physalis alkekengi
20 Mar – 3 Apr
10 Apr
8-10 wk
29 May
5 Jun
0 wk
Love in a mist
Nigella damascena
27 May
29 Jun
0 wk
31 May
19 Jun
1 wk after
Strawflower
Xerochrysum bracteatum
Fleece
7 – 21 Apr
5 May
6-8 wk
2 Jun
16 Jun
1 wk after
25 Jul
8 wk after
Purple-top vervain
Verbena bonariensis
6 Mar – 3 Apr
10 Apr
8-12 wk
29 May
5 Jun
0 wk
Cardoon
Cynara cardunculus
Greenhouse
4 Mar – 1 Apr
20 Mar
8-12 wk
27 May
0 wk
Regal-foxtail
Ptilotus nobilis
Fleece
17 Mar – 14 Apr
21 Apr
8-12 wk
9 Jun
16 Jun
2 wk after
Globe amaranth
Gomphrena globosa
Fleece
14 – 28 Apr
5 May
6-8 wk
9 Jun
16 Jun
2 wk after
Corn poppy
Papaver rhoeas
27 May
14 Jul
0 wk
31 May
4 Jul
1 wk after
Snapdragon
Antirrhinum majus
4 Mar – 1 Apr
9 May
8-12 wk
27 May
4 Jul
0 wk
12 Jun
24 Jun
2 wk after
Flossflower
Ageratum houstonianum
Fleece
31 Mar – 14 Apr
11 May
8-10 wk
9 Jun
6 Jul
2 wk after
Sweet pea
Lathyrus odoratus
1 – 22 Apr
30 May
5-8 wk
27 May
4 Jul
0 wk
Stock
Matthiola incana
1 – 15 Apr
2 Jun
6-8 wk
27 May
14 Jul
0 wk
17 Jun
4 Jul
3 wk after
Wormwood
Artemisia absinthium
1 – 15 Apr
3 May
6-8 wk
27 May
14 Jun
0 wk
17 Jun
3 wk after
Mexican sunflower
Tithonia rotundifolia
Fleece
28 Apr – 12 May
14 May
4-6 wk
9 Jun
11 Jun
2 wk after
Garden pansy
Viola × wittrockiana
18 Mar – 1 Apr
19 May
8-10 wk
27 May
14 Jul
0 wk
12 Jun
4 Jul
2 wk after
Petunia
Petunia
17 Mar – 14 Apr
22 Apr
8-12 wk
9 Jun
17 Jun
2 wk after
Sweet Scabious
Scabiosa atropurpurea
3 – 17 Apr
24 Apr
6-8 wk
29 May
5 Jun
0 wk
15 Jul
7 wk after
Common zinnia
Zinnia elegans
28 Apr – 12 May
29 May
4-6 wk
9 Jun
26 Jun
2 wk after
Common morning glory
Ipomoea purpurea
Fleece
5 – 19 May
5 Jun
3-5 wk
9 Jun
26 Jun
2 wk after
Garden cosmos
Cosmos bipinnatus
28 Apr – 12 May
27 May
4-6 wk
9 Jun
24 Jun
2 wk after
15 Jul
7 wk after
Scarlet milkweed
Asclepias curassavica
Fleece
5 Apr – 3 May
21 May
8-12 wk
28 Jun
16 Jul
5 wk after
Bee balm
Monarda didyma
4 Mar – 1 Apr
19 Apr
8-12 wk
27 May
14 Jun
0 wk
1 Jul
5 wk after
Yarrow
Achillea millefolium
1 – 15 Apr
3 Apr
6-8 wk
27 May
0 wk
17 Jun
3 wk after
Safflower
Carthamus tinctorius
27 May
14 Jun
0 wk
31 May
4 Jun
1 wk after
Iceland poppy
Papaver nudicaule
Season too short
1 – 15 Apr
23 May
6-8 wk
27 May
4 Jul
0 wk
9 May
24 Jun
3 wk before
Bishop's flower
Ammi majus
15 – 29 Apr
6 Jun
4-6 wk
27 May
4 Jul
0 wk
17 Jun
24 Jun
3 wk after
Drumsticks
Pycnosorus globosus
Greenhouse
10 – 24 Mar
31 Mar
10-12 wk
2 Jun
9 Jun
1 wk after
Sunflower
Helianthus annuus
12 – 19 May
3 Jun
3-4 wk
9 Jun
24 Jun
2 wk after
1 Jul
5 wk after
China aster
Callistephus chinensis
14 – 28 Apr
23 May
6-8 wk
9 Jun
4 Jul
2 wk after
15 Jul
7 wk after
Annual phlox
Phlox drummondii
7 – 21 Apr
16 May
6-8 wk
2 Jun
27 Jun
1 wk after
15 Jul
7 wk after
Hollyhock
Alcea rosea
1 – 15 Apr
6-8 wk
27 May
0 wk
17 Jun
3 wk after
Alpine delphinium
Delphinium elatum
4 Mar – 1 Apr
19 Apr
8-12 wk
27 May
14 Jun
0 wk
1 Jul
5 wk after
African marigold
Tagetes erecta
14 – 28 Apr
16 May
6-8 wk
9 Jun
27 Jun
2 wk after
Black-eyed Susan
Rudbeckia hirta
3 – 17 Apr
13 May
6-8 wk
29 May
24 Jun
0 wk
15 Jul
7 wk after
Wood sage
Salvia nemorosa
18 Mar – 1 Apr
9 Apr
8-10 wk
27 May
4 Jun
0 wk
1 Jul
5 wk after
Black-eyed susan vine
Thunbergia alata
Fleece
31 Mar – 28 Apr
15 May
6-10 wk
9 Jun
26 Jun
2 wk after
California goldenpoppy
Eschscholzia californica
27 May
9 Jul
0 wk
31 May
29 Jun
1 wk after
Painted tongue
Salpiglossis sinuata
31 Mar – 14 Apr
23 Apr
8-10 wk
9 Jun
18 Jun
2 wk after
Water forget-me-not
Myosotis scorpioides
1 – 15 Apr
3 May
6-8 wk
27 May
14 Jun
0 wk
17 Jun
3 wk after