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Method
Rel. frost
Last spring frost (0°C) 31 May Normal year · 20 years of data
Frost-free season 94 days 31 May – 2 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)
12 – 26 Apr
12 Jun
5-7 wk
31 May
17 Jul
0 wk
1 Jun
7 Jul
0 wk
Broccoli
Brassica oleracea (Italica-gruppen)
19 Apr – 3 May
24 Jun
4-6 wk
31 May
22 Jul
0 wk
1 Jun
12 Jul
0 wk
Chili pepper
Capsicum annuum
Season too short
14 Mar – 11 Apr
20 Mar
8-12 wk
6 Jun
1 wk after
Curly Kale
Brassica oleracea (Curly Kale-gruppen)
12 – 26 Apr
7 Jun
5-7 wk
31 May
12 Jul
0 wk
31 May
2 Jul
0 wk
Garden cucumber
Cucumis sativus
Greenhouse
9 – 16 May
27 May
3-4 wk
6 Jun
17 Jun
1 wk after
Florence Fennel
Foeniculum vulgare
Fleece
9 – 16 May
31 May
4-5 wk
13 Jun
28 Jun
2 wk after
25 Jun
4 wk after
Butter bean
Phaseolus lunatus
Season too short
11 – 18 Jun
3-4 wk
9 Jul
6 wk after
Onion
Allium cepa (Cepa-gruppen)
Greenhouse
8 Mar – 5 Apr
27 Mar
8-12 wk
31 May
0 wk
31 May
0 wk
Onion (sets)
Allium cepa (Cepa-gruppen)
Fleece
28 May
30 May
0 wk
28 May
0 wk
Maize
Zea mays
Greenhouse
3 – 10 May
17 May
3-4 wk
31 May
7 Jun
0 wk
Swiss Chard
Beta vulgaris (Flavescens-gruppen)
5 – 12 May
27 Jun
3-4 wk
2 Jun
18 Jul
0 wk
13 Jun
8 Jul
2 wk after
Carrot
Daucus carota subsp. sativus var. sativus
31 May
2 Jul
0 wk
31 May
22 Jun
0 wk
Palm Kale
Brassica oleracea (Palm Kale-gruppen)
12 – 26 Apr
7 Jun
5-7 wk
31 May
12 Jul
0 wk
31 May
2 Jul
0 wk
Potato
Solanum tuberosum
29 Apr – 13 May
2 May
4-6 wk
10 Jun
1 wk after
10 Jun
1 wk after
Ornamental Kale
Brassica oleracea (Ornamental-gruppen)
12 – 26 Apr
17 Jun
5-7 wk
31 May
22 Jul
0 wk
1 Jun
12 Jul
0 wk
Pumpkin
Cucurbita pepo
Fleece
16 – 23 May
1 Jun
3-4 wk
13 Jun
22 Jun
2 wk after
Beetroot
Beta vulgaris (Conditiva-gruppen)
Fleece
3 – 10 May
18 May
3-4 wk
31 May
8 Jun
0 wk
6 Jun
1 wk after
Red Cabbage
Brassica oleracea (Red Cabbage-gruppen)
19 Apr – 3 May
19 Jun
4-6 wk
31 May
17 Jul
0 wk
Lettuce
Lactuca sativa
3 – 10 May
6 Jul
3-4 wk
31 May
27 Jul
0 wk
1 Jun
17 Jul
0 wk
Savoy Cabbage
Brassica oleracea (Savoy Cabbage-gruppen)
19 Apr – 3 May
19 Jun
4-6 wk
31 May
17 Jul
0 wk
Shallot (bulbs)
Allium cepa (Aggregatum-gruppen)
3 – 17 May
12 May
2-4 wk
31 May
0 wk
31 May
0 wk
Shallot (sets)
Allium cepa (Aggregatum-gruppen)
Fleece
28 May
30 May
0 wk
28 May
0 wk
Spinach
Spinacia oleracea
3 – 10 May
21 Jul
3-4 wk
31 May
11 Aug
0 wk
28 May
1 Aug
0 wk
Sweet potato
Ipomoea batatas
25 Jun – 9 Jul
4-6 wk
6 Aug
10 wk after
Garden tomato
Solanum lycopersicum
Greenhouse
5 – 19 Apr
26 Apr
6-8 wk
31 May
7 Jun
0 wk
Tomatillo
Physalis ixocarpa
Common Bean
Phaseolus vulgaris
Fleece
9 – 23 May
3 Jun
2-4 wk
6 Jun
17 Jun
1 wk after
25 Jun
4 wk after
White Cabbage
Brassica oleracea (White Cabbage-gruppen)
19 Apr – 3 May
19 Jun
4-6 wk
31 May
17 Jul
0 wk
Garden pea
Pisum sativum
3 – 10 May
21 Jun
3-4 wk
31 May
12 Jul
0 wk
1 Jun
2 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
25 Apr – 9 May
26 May
4-6 wk
6 Jun
23 Jun
1 wk after
Lemon balm
Melissa officinalis
22 Mar – 5 Apr
17 May
8-10 wk
31 May
12 Jul
0 wk
25 Jun
2 Jul
4 wk after
Dill
Anethum graveolens
1 Jun
18 Jul
0 wk
Wild chives
Allium schoenoprasum
5 – 19 Apr
31 May
6-8 wk
31 May
12 Jul
0 wk
1 Jun
2 Jul
0 wk
Spearmint
Mentha spicata
8 Mar – 5 Apr
17 May
8-12 wk
31 May
12 Jul
0 wk
25 Jun
2 Jul
4 wk after
Coriander
Coriandrum sativum
31 May
7 Aug
0 wk
13 Jun
28 Jul
2 wk after
Garden sage
Salvia officinalis
24 Mar – 7 Apr
2 May
8-10 wk
2 Jun
27 Jun
0 wk
Common thyme
Thymus vulgaris
22 Mar – 5 Apr
7 May
8-10 wk
31 May
2 Jul
0 wk
Oregano
Origanum vulgare
5 – 19 Apr
21 May
6-8 wk
31 May
2 Jul
0 wk
25 Jun
4 wk after
Parsley
Petroselinum crispum
5 – 19 Apr
21 May
6-8 wk
31 May
2 Jul
0 wk
1 Jun
22 Jun
0 wk
Rosemary
Salvia rosmarinus
Fleece
22 Feb – 22 Mar
3 Apr
10-14 wk
31 May
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
9 – 16 May
2 Jun
3-4 wk
6 Jun
23 Jun
1 wk after
Cornflower
Centaurea cyanus
31 May
12 Jul
0 wk
1 Jun
2 Jul
0 wk
Statice
Limonium sinuatum
Fleece
28 Mar – 11 Apr
23 Apr
8-10 wk
6 Jun
18 Jun
1 wk after
Sweet William
Dianthus barbatus
5 – 19 Apr
6-8 wk
31 May
0 wk
10 Jun
1 wk after
Snow-on-the-mountain
Euphorbia marginata
Fleece
11 – 25 Apr
7 May
6-8 wk
6 Jun
18 Jun
1 wk after
20 Jul
7 wk after
Pinnate dahlia
Dahlia × pinnata
16 – 30 Apr
2 May
6-8 wk
11 Jun
13 Jun
2 wk after
Pinnate dahlia (tubers)
Dahlia × pinnata
Fleece
18 Apr – 16 May
28 May
4-8 wk
13 Jun
25 Jun
2 wk after
13 Jun
15 Jun
2 wk after
Foxglove
Digitalis purpurea
22 Mar – 5 Apr
8-10 wk
31 May
0 wk
13 Jun
2 wk after
Busy lizzie
Impatiens walleriana
9 Apr – 7 May
28 May
8-12 wk
2 Jul
23 Jul
5 wk after
Creeping zinnia
Sanvitalia procumbens
18 Apr – 2 May
7 May
6-8 wk
13 Jun
18 Jun
2 wk after
Hyacinth bean
Dolichos lablab
Season too short
2 – 16 May
4-6 wk
13 Jun
2 wk after
Chinese lantern
Physalis alkekengi
24 Mar – 7 Apr
13 Apr
8-10 wk
2 Jun
8 Jun
0 wk
Love in a mist
Nigella damascena
31 May
27 Jun
0 wk
1 Jun
17 Jun
0 wk
Strawflower
Xerochrysum bracteatum
Fleece
11 – 25 Apr
27 Apr
6-8 wk
6 Jun
8 Jun
1 wk after
20 Jul
7 wk after
Purple-top vervain
Verbena bonariensis
10 Mar – 7 Apr
13 Apr
8-12 wk
2 Jun
8 Jun
0 wk
Cardoon
Cynara cardunculus
Season too short
8 Mar – 5 Apr
18 Mar
8-12 wk
31 May
0 wk
Regal-foxtail
Ptilotus nobilis
Greenhouse
14 Mar – 11 Apr
18 Apr
8-12 wk
6 Jun
13 Jun
1 wk after
Globe amaranth
Gomphrena globosa
Greenhouse
11 – 25 Apr
2 May
6-8 wk
6 Jun
13 Jun
1 wk after
Corn poppy
Papaver rhoeas
31 May
12 Jul
0 wk
1 Jun
2 Jul
0 wk
Snapdragon
Antirrhinum majus
8 Mar – 5 Apr
7 May
8-12 wk
31 May
2 Jul
0 wk
10 Jun
22 Jun
1 wk after
Flossflower
Ageratum houstonianum
Fleece
4 – 18 Apr
3 May
8-10 wk
13 Jun
28 Jun
2 wk after
Sweet pea
Lathyrus odoratus
5 – 26 Apr
28 May
5-8 wk
31 May
2 Jul
0 wk
Stock
Matthiola incana
5 – 19 Apr
31 May
6-8 wk
31 May
12 Jul
0 wk
13 Jun
2 Jul
2 wk after
Wormwood
Artemisia absinthium
5 – 19 Apr
1 May
6-8 wk
31 May
12 Jun
0 wk
13 Jun
2 wk after
Mexican sunflower
Tithonia rotundifolia
Greenhouse
25 Apr – 9 May
11 May
4-6 wk
6 Jun
8 Jun
1 wk after
Garden pansy
Viola × wittrockiana
22 Mar – 5 Apr
17 May
8-10 wk
31 May
12 Jul
0 wk
10 Jun
2 Jul
1 wk after
Petunia
Petunia
Fleece
14 Mar – 11 Apr
23 Apr
8-12 wk
6 Jun
18 Jun
1 wk after
Sweet Scabious
Scabiosa atropurpurea
7 – 21 Apr
27 Apr
6-8 wk
2 Jun
8 Jun
0 wk
13 Jul
6 wk after
Common zinnia
Zinnia elegans
Fleece
25 Apr – 9 May
26 May
4-6 wk
6 Jun
23 Jun
1 wk after
Common morning glory
Ipomoea purpurea
Greenhouse
2 – 16 May
2 Jun
3-5 wk
6 Jun
23 Jun
1 wk after
Garden cosmos
Cosmos bipinnatus
Fleece
25 Apr – 9 May
28 May
4-6 wk
6 Jun
25 Jun
1 wk after
25 Jun
4 wk after
Scarlet milkweed
Asclepias curassavica
Greenhouse
21 Mar – 18 Apr
18 May
8-12 wk
13 Jun
13 Jul
2 wk after
Bee balm
Monarda didyma
8 Mar – 5 Apr
17 Apr
8-12 wk
31 May
12 Jun
0 wk
25 Jun
4 wk after
Yarrow
Achillea millefolium
5 – 19 Apr
6-8 wk
31 May
0 wk
13 Jun
2 wk after
Safflower
Carthamus tinctorius
31 May
12 Jun
0 wk
1 Jun
2 Jun
0 wk
Iceland poppy
Papaver nudicaule
Season too short
5 – 19 Apr
21 May
6-8 wk
31 May
2 Jul
0 wk
15 May
22 Jun
2 wk before
Bishop's flower
Ammi majus
19 Apr – 3 May
4 Jun
4-6 wk
31 May
2 Jul
0 wk
13 Jun
22 Jun
2 wk after
Drumsticks
Pycnosorus globosus
Greenhouse
14 – 28 Mar
27 Mar
10-12 wk
6 Jun
1 wk after
Sunflower
Helianthus annuus
16 – 23 May
30 May
3-4 wk
13 Jun
20 Jun
2 wk after
25 Jun
4 wk after
China aster
Callistephus chinensis
18 Apr – 2 May
19 May
6-8 wk
13 Jun
30 Jun
2 wk after
13 Jul
6 wk after
Annual phlox
Phlox drummondii
11 – 25 Apr
7 May
6-8 wk
6 Jun
18 Jun
1 wk after
13 Jul
6 wk after
Hollyhock
Alcea rosea
5 – 19 Apr
6-8 wk
31 May
0 wk
13 Jun
2 wk after
Alpine delphinium
Delphinium elatum
8 Mar – 5 Apr
17 Apr
8-12 wk
31 May
12 Jun
0 wk
25 Jun
4 wk after
African marigold
Tagetes erecta
18 Apr – 2 May
7 May
6-8 wk
13 Jun
18 Jun
2 wk after
Black-eyed Susan
Rudbeckia hirta
7 – 21 Apr
9 May
6-8 wk
2 Jun
20 Jun
0 wk
13 Jul
6 wk after
Wood sage
Salvia nemorosa
22 Mar – 5 Apr
7 Apr
8-10 wk
31 May
2 Jun
0 wk
25 Jun
4 wk after
Black-eyed susan vine
Thunbergia alata
Greenhouse
28 Mar – 25 Apr
12 May
6-10 wk
6 Jun
23 Jun
1 wk after
California goldenpoppy
Eschscholzia californica
31 May
12 Jul
0 wk
1 Jun
2 Jul
0 wk
Painted tongue
Salpiglossis sinuata
Fleece
28 Mar – 11 Apr
3 May
8-10 wk
6 Jun
28 Jun
1 wk after
Water forget-me-not
Myosotis scorpioides
5 – 19 Apr
1 May
6-8 wk
31 May
12 Jun
0 wk
13 Jun
2 wk after