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Method
Rel. frost
Last spring frost (0°C) 27 May Normal year · 20 years of data
Frost-free season 86 days 27 May – 21 Aug
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
11 Jun
5-7 wk
27 May
16 Jul
0 wk
28 May
6 Jul
0 wk
Broccoli
Brassica oleracea (Italica-gruppen)
15 – 29 Apr
23 Jun
4-6 wk
27 May
21 Jul
0 wk
28 May
11 Jul
0 wk
Chili pepper
Capsicum annuum
Season too short
10 Mar – 7 Apr
15 Mar
8-12 wk
2 Jun
1 wk after
Curly Kale
Brassica oleracea (Curly Kale-gruppen)
8 – 22 Apr
6 Jun
5-7 wk
27 May
11 Jul
0 wk
27 May
1 Jul
0 wk
Garden cucumber
Cucumis sativus
Greenhouse
5 – 12 May
6 Jun
3-4 wk
2 Jun
27 Jun
1 wk after
Florence Fennel
Foeniculum vulgare
Fleece
5 – 12 May
18 May
4-5 wk
9 Jun
15 Jun
2 wk after
21 Jun
4 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)
Fleece
4 Mar – 1 Apr
20 Mar
8-12 wk
27 May
0 wk
2 Jun
1 wk after
Onion (sets)
Allium cepa (Cepa-gruppen)
28 May
0 wk
28 May
0 wk
Maize
Zea mays
Fleece
5 – 12 May
3-4 wk
2 Jun
1 wk after
Swiss Chard
Beta vulgaris (Flavescens-gruppen)
1 – 8 May
14 Jun
3-4 wk
29 May
5 Jul
0 wk
9 Jun
25 Jun
2 wk after
Carrot
Daucus carota subsp. sativus var. sativus
27 May
29 Jun
0 wk
27 May
19 Jun
0 wk
Palm Kale
Brassica oleracea (Palm Kale-gruppen)
8 – 22 Apr
6 Jun
5-7 wk
27 May
11 Jul
0 wk
27 May
1 Jul
0 wk
Potato
Solanum tuberosum
25 Apr – 9 May
11 May
4-6 wk
6 Jun
8 Jun
1 wk after
6 Jun
1 wk after
Ornamental Kale
Brassica oleracea (Ornamental-gruppen)
8 – 22 Apr
14 Jun
5-7 wk
27 May
19 Jul
0 wk
28 May
9 Jul
0 wk
Pumpkin
Cucurbita pepo
Fleece
12 – 19 May
11 Jun
3-4 wk
9 Jun
2 Jul
2 wk after
Beetroot
Beta vulgaris (Conditiva-gruppen)
1 – 8 May
14 May
3-4 wk
29 May
4 Jun
0 wk
9 Jun
2 wk after
Red Cabbage
Brassica oleracea (Red Cabbage-gruppen)
15 – 29 Apr
18 Jun
4-6 wk
27 May
16 Jul
0 wk
Lettuce
Lactuca sativa
29 Apr – 6 May
3 Jul
3-4 wk
27 May
24 Jul
0 wk
28 May
14 Jul
0 wk
Savoy Cabbage
Brassica oleracea (Savoy Cabbage-gruppen)
15 – 29 Apr
18 Jun
4-6 wk
27 May
16 Jul
0 wk
Shallot (bulbs)
Allium cepa (Aggregatum-gruppen)
29 Apr – 13 May
17 May
2-4 wk
27 May
31 May
0 wk
27 May
0 wk
Shallot (sets)
Allium cepa (Aggregatum-gruppen)
28 May
0 wk
28 May
0 wk
Spinach
Spinacia oleracea
29 Apr – 6 May
20 Jul
3-4 wk
27 May
10 Aug
0 wk
24 May
31 Jul
0 wk
Sweet potato
Ipomoea batatas
21 Jun – 5 Jul
4-6 wk
2 Aug
10 wk after
Garden tomato
Solanum lycopersicum
Fleece
7 – 21 Apr
8 Apr
6-8 wk
2 Jun
1 wk after
Tomatillo
Physalis ixocarpa
Common Bean
Phaseolus vulgaris
Fleece
5 – 19 May
13 Jun
2-4 wk
2 Jun
27 Jun
1 wk after
21 Jun
4 wk after
White Cabbage
Brassica oleracea (White Cabbage-gruppen)
15 – 29 Apr
18 Jun
4-6 wk
27 May
16 Jul
0 wk
Garden pea
Pisum sativum
29 Apr – 6 May
18 Jun
3-4 wk
27 May
9 Jul
0 wk
28 May
29 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
28 Apr – 12 May
20 May
4-6 wk
9 Jun
17 Jun
2 wk after
Lemon balm
Melissa officinalis
18 Mar – 1 Apr
14 May
8-10 wk
27 May
9 Jul
0 wk
21 Jun
29 Jun
4 wk after
Dill
Anethum graveolens
28 May
5 Jul
0 wk
Wild chives
Allium schoenoprasum
1 – 15 Apr
30 May
6-8 wk
27 May
11 Jul
0 wk
28 May
1 Jul
0 wk
Spearmint
Mentha spicata
4 Mar – 1 Apr
16 May
8-12 wk
27 May
11 Jul
0 wk
21 Jun
1 Jul
4 wk after
Coriander
Coriandrum sativum
27 May
25 Jul
0 wk
9 Jun
15 Jul
2 wk after
Garden sage
Salvia officinalis
20 Mar – 3 Apr
1 May
8-10 wk
29 May
26 Jun
0 wk
Common thyme
Thymus vulgaris
18 Mar – 1 Apr
6 May
8-10 wk
27 May
1 Jul
0 wk
Oregano
Origanum vulgare
1 – 15 Apr
20 May
6-8 wk
27 May
1 Jul
0 wk
21 Jun
21 Jun
4 wk after
Parsley
Petroselinum crispum
1 – 15 Apr
20 May
6-8 wk
27 May
1 Jul
0 wk
28 May
21 Jun
0 wk
Rosemary
Salvia rosmarinus
20 Feb – 20 Mar
9 Mar
10-14 wk
29 May
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
27 May
3-4 wk
9 Jun
17 Jun
2 wk after
Cornflower
Centaurea cyanus
27 May
11 Jul
0 wk
28 May
1 Jul
0 wk
Statice
Limonium sinuatum
31 Mar – 14 Apr
15 Apr
8-10 wk
9 Jun
10 Jun
2 wk after
Sweet William
Dianthus barbatus
1 – 15 Apr
6-8 wk
27 May
0 wk
6 Jun
1 wk after
Snow-on-the-mountain
Euphorbia marginata
14 – 28 Apr
29 Apr
6-8 wk
9 Jun
10 Jun
2 wk after
2 Aug
10 wk after
Pinnate dahlia
Dahlia × pinnata
12 – 26 Apr
4 May
6-8 wk
7 Jun
15 Jun
2 wk after
Pinnate dahlia (tubers)
Dahlia × pinnata
Fleece
14 Apr – 12 May
27 May
4-8 wk
9 Jun
24 Jun
2 wk after
9 Jun
14 Jun
2 wk after
Foxglove
Digitalis purpurea
18 Mar – 1 Apr
8-10 wk
27 May
0 wk
9 Jun
2 wk after
Busy lizzie
Impatiens walleriana
5 Apr – 3 May
7 Jun
8-12 wk
28 Jun
2 Aug
5 wk after
Creeping zinnia
Sanvitalia procumbens
14 – 28 Apr
9 May
6-8 wk
9 Jun
20 Jun
2 wk after
Hyacinth bean
Dolichos lablab
Season too short
28 Apr – 12 May
4-6 wk
9 Jun
2 wk after
Chinese lantern
Physalis alkekengi
20 Mar – 3 Apr
31 Mar
8-10 wk
29 May
0 wk
Love in a mist
Nigella damascena
27 May
24 Jun
0 wk
28 May
14 Jun
0 wk
Strawflower
Xerochrysum bracteatum
Fleece
7 – 21 Apr
28 Apr
6-8 wk
2 Jun
9 Jun
1 wk after
16 Jul
7 wk after
Purple-top vervain
Verbena bonariensis
6 Mar – 3 Apr
31 Mar
8-12 wk
29 May
0 wk
Cardoon
Cynara cardunculus
Greenhouse
4 Mar – 1 Apr
17 Mar
8-12 wk
27 May
0 wk
Regal-foxtail
Ptilotus nobilis
Fleece
17 Mar – 14 Apr
12 Apr
8-12 wk
9 Jun
2 wk after
Globe amaranth
Gomphrena globosa
Fleece
14 – 28 Apr
26 Apr
6-8 wk
9 Jun
2 wk after
Corn poppy
Papaver rhoeas
27 May
9 Jul
0 wk
28 May
29 Jun
0 wk
Snapdragon
Antirrhinum majus
4 Mar – 1 Apr
4 May
8-12 wk
27 May
29 Jun
0 wk
6 Jun
19 Jun
1 wk after
Flossflower
Ageratum houstonianum
19 Apr – 3 May
25 Apr
8-10 wk
28 Jun
5 wk after
Sweet pea
Lathyrus odoratus
1 – 22 Apr
27 May
5-8 wk
27 May
1 Jul
0 wk
Stock
Matthiola incana
1 – 15 Apr
28 May
6-8 wk
27 May
9 Jul
0 wk
9 Jun
29 Jun
2 wk after
Wormwood
Artemisia absinthium
1 – 15 Apr
30 Apr
6-8 wk
27 May
11 Jun
0 wk
9 Jun
2 wk after
Mexican sunflower
Tithonia rotundifolia
Greenhouse
21 Apr – 5 May
13 May
4-6 wk
2 Jun
10 Jun
1 wk after
Garden pansy
Viola × wittrockiana
18 Mar – 1 Apr
16 May
8-10 wk
27 May
11 Jul
0 wk
6 Jun
1 Jul
1 wk after
Petunia
Petunia
17 Mar – 14 Apr
15 Apr
8-12 wk
9 Jun
10 Jun
2 wk after
Sweet Scabious
Scabiosa atropurpurea
3 – 17 Apr
14 Apr
6-8 wk
29 May
0 wk
9 Jul
6 wk after
Common zinnia
Zinnia elegans
28 Apr – 12 May
20 May
4-6 wk
9 Jun
17 Jun
2 wk after
Common morning glory
Ipomoea purpurea
Fleece
5 – 19 May
27 May
3-5 wk
9 Jun
17 Jun
2 wk after
Garden cosmos
Cosmos bipinnatus
28 Apr – 12 May
18 May
4-6 wk
9 Jun
15 Jun
2 wk after
9 Jul
6 wk after
Scarlet milkweed
Asclepias curassavica
Fleece
5 Apr – 3 May
12 May
8-12 wk
28 Jun
7 Jul
5 wk after
Bee balm
Monarda didyma
4 Mar – 1 Apr
14 Apr
8-12 wk
27 May
9 Jun
0 wk
21 Jun
4 wk after
Yarrow
Achillea millefolium
1 – 15 Apr
6-8 wk
27 May
0 wk
9 Jun
2 wk after
Safflower
Carthamus tinctorius
27 May
11 Jun
0 wk
28 May
1 Jun
0 wk
Iceland poppy
Papaver nudicaule
Season too short
1 – 15 Apr
20 May
6-8 wk
27 May
1 Jul
0 wk
11 May
21 Jun
2 wk before
Bishop's flower
Ammi majus
15 – 29 Apr
1 Jun
4-6 wk
27 May
29 Jun
0 wk
9 Jun
19 Jun
2 wk after
Drumsticks
Pycnosorus globosus
Greenhouse
10 – 24 Mar
26 Mar
10-12 wk
2 Jun
4 Jun
1 wk after
Sunflower
Helianthus annuus
12 – 19 May
17 May
3-4 wk
9 Jun
2 wk after
21 Jun
4 wk after
China aster
Callistephus chinensis
14 – 28 Apr
6 May
6-8 wk
9 Jun
17 Jun
2 wk after
9 Jul
6 wk after
Annual phlox
Phlox drummondii
7 – 21 Apr
9 May
6-8 wk
2 Jun
20 Jun
1 wk after
9 Jul
6 wk after
Hollyhock
Alcea rosea
1 – 15 Apr
6-8 wk
27 May
0 wk
9 Jun
2 wk after
Alpine delphinium
Delphinium elatum
4 Mar – 1 Apr
14 Apr
8-12 wk
27 May
9 Jun
0 wk
21 Jun
4 wk after
African marigold
Tagetes erecta
14 – 28 Apr
9 May
6-8 wk
9 Jun
20 Jun
2 wk after
Black-eyed Susan
Rudbeckia hirta
3 – 17 Apr
26 Apr
6-8 wk
29 May
7 Jun
0 wk
9 Jul
6 wk after
Wood sage
Salvia nemorosa
18 Mar – 1 Apr
4 Apr
8-10 wk
27 May
30 May
0 wk
21 Jun
4 wk after
Black-eyed susan vine
Thunbergia alata
Fleece
31 Mar – 28 Apr
6 May
6-10 wk
9 Jun
17 Jun
2 wk after
California goldenpoppy
Eschscholzia californica
27 May
2 Jul
0 wk
28 May
22 Jun
0 wk
Painted tongue
Salpiglossis sinuata
Fleece
24 Mar – 7 Apr
20 Apr
8-10 wk
2 Jun
15 Jun
1 wk after
Water forget-me-not
Myosotis scorpioides
1 – 15 Apr
30 Apr
6-8 wk
27 May
11 Jun
0 wk
9 Jun
2 wk after