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Method
Rel. frost
Last spring frost (0°C) 19 May Normal year · 20 years of data
Frost-free season 136 days 19 May – 2 Oct
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)
31 Mar – 14 Apr
8 Jun
5-7 wk
19 May
13 Jul
0 wk
20 May
3 Jul
0 wk
Broccoli
Brassica oleracea (Italica-gruppen)
7 – 21 Apr
20 Jun
4-6 wk
19 May
18 Jul
0 wk
20 May
8 Jul
0 wk
Chili pepper
Capsicum annuum
Season too short
2 – 30 Mar
8-12 wk
25 May
1 wk after
Curly Kale
Brassica oleracea (Curly Kale-gruppen)
31 Mar – 14 Apr
3 Jun
5-7 wk
19 May
8 Jul
0 wk
19 May
28 Jun
0 wk
Garden cucumber
Cucumis sativus
Season too short
27 Apr – 4 May
16 May
3-4 wk
25 May
6 Jun
1 wk after
Florence Fennel
Foeniculum vulgare
16 – 23 May
31 May
4-5 wk
20 Jun
28 Jun
5 wk after
1 Jul
6 wk after
Butter bean
Phaseolus lunatus
Season too short
30 May – 6 Jun
3-4 wk
27 Jun
6 wk after
Onion
Allium cepa (Cepa-gruppen)
Fleece
24 Feb – 24 Mar
17 Mar
8-12 wk
19 May
0 wk
25 May
1 wk after
Onion (sets)
Allium cepa (Cepa-gruppen)
Fleece
16 May
1 Jun
0 wk
16 May
22 May
0 wk
Maize
Zea mays
Greenhouse
21 – 28 Apr
6 May
3-4 wk
19 May
27 May
0 wk
Swiss Chard
Beta vulgaris (Flavescens-gruppen)
23 – 30 Apr
27 Jun
3-4 wk
21 May
18 Jul
0 wk
1 Jun
8 Jul
2 wk after
Carrot
Daucus carota subsp. sativus var. sativus
19 May
28 Jun
0 wk
19 May
18 Jun
0 wk
Palm Kale
Brassica oleracea (Palm Kale-gruppen)
31 Mar – 14 Apr
3 Jun
5-7 wk
19 May
8 Jul
0 wk
19 May
28 Jun
0 wk
Potato
Solanum tuberosum
Fleece
8 – 22 Apr
13 May
4-6 wk
20 May
10 Jun
0 wk
20 May
31 May
0 wk
Ornamental Kale
Brassica oleracea (Ornamental-gruppen)
31 Mar – 14 Apr
13 Jun
5-7 wk
19 May
18 Jul
0 wk
20 May
8 Jul
0 wk
Pumpkin
Cucurbita pepo
Fleece
4 – 11 May
21 May
3-4 wk
1 Jun
11 Jun
2 wk after
Beetroot
Beta vulgaris (Conditiva-gruppen)
Fleece
21 – 28 Apr
14 May
3-4 wk
19 May
4 Jun
0 wk
25 May
25 May
1 wk after
Red Cabbage
Brassica oleracea (Red Cabbage-gruppen)
7 – 21 Apr
15 Jun
4-6 wk
19 May
13 Jul
0 wk
Lettuce
Lactuca sativa
21 – 28 Apr
2 Jul
3-4 wk
19 May
23 Jul
0 wk
20 May
13 Jul
0 wk
Savoy Cabbage
Brassica oleracea (Savoy Cabbage-gruppen)
7 – 21 Apr
15 Jun
4-6 wk
19 May
13 Jul
0 wk
Shallot (bulbs)
Allium cepa (Aggregatum-gruppen)
21 Apr – 5 May
11 May
2-4 wk
19 May
25 May
0 wk
19 May
0 wk
Shallot (sets)
Allium cepa (Aggregatum-gruppen)
Fleece
16 May
1 Jun
0 wk
16 May
22 May
0 wk
Spinach
Spinacia oleracea
21 – 28 Apr
17 Jul
3-4 wk
19 May
7 Aug
0 wk
16 May
28 Jul
0 wk
Sweet potato
Ipomoea batatas
13 – 27 Jun
4-6 wk
25 Jul
10 wk after
Garden tomato
Solanum lycopersicum
Greenhouse
24 Mar – 7 Apr
15 Apr
6-8 wk
19 May
27 May
0 wk
Tomatillo
Physalis ixocarpa
Common Bean
Phaseolus vulgaris
Greenhouse
21 Apr – 5 May
28 Jun
2-4 wk
19 May
12 Jul
0 wk
1 Jun
2 Jul
2 wk after
White Cabbage
Brassica oleracea (White Cabbage-gruppen)
7 – 21 Apr
15 Jun
4-6 wk
19 May
13 Jul
0 wk
Garden pea
Pisum sativum
21 – 28 Apr
17 Jun
3-4 wk
19 May
8 Jul
0 wk
20 May
28 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
Greenhouse
13 – 27 Apr
4 Jun
4-6 wk
25 May
2 Jul
1 wk after
Lemon balm
Melissa officinalis
10 – 24 Mar
13 May
8-10 wk
19 May
8 Jul
0 wk
13 Jun
28 Jun
4 wk after
Dill
Anethum graveolens
20 May
18 Jul
0 wk
Wild chives
Allium schoenoprasum
24 Mar – 7 Apr
27 May
6-8 wk
19 May
8 Jul
0 wk
20 May
28 Jun
0 wk
Spearmint
Mentha spicata
24 Feb – 24 Mar
13 May
8-12 wk
19 May
8 Jul
0 wk
13 Jun
28 Jun
4 wk after
Coriander
Coriandrum sativum
19 May
7 Aug
0 wk
1 Jun
28 Jul
2 wk after
Garden sage
Salvia officinalis
12 – 26 Mar
28 Apr
8-10 wk
21 May
23 Jun
0 wk
Common thyme
Thymus vulgaris
10 – 24 Mar
3 May
8-10 wk
19 May
28 Jun
0 wk
Oregano
Origanum vulgare
24 Mar – 7 Apr
17 May
6-8 wk
19 May
28 Jun
0 wk
13 Jun
18 Jun
4 wk after
Parsley
Petroselinum crispum
24 Mar – 7 Apr
17 May
6-8 wk
19 May
28 Jun
0 wk
20 May
18 Jun
0 wk
Rosemary
Salvia rosmarinus
12 Feb – 12 Mar
30 Mar
10-14 wk
21 May
8 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
27 Apr – 4 May
11 Jun
3-4 wk
25 May
2 Jul
1 wk after
Cornflower
Centaurea cyanus
19 May
8 Jul
0 wk
20 May
28 Jun
0 wk
Statice
Limonium sinuatum
23 Mar – 6 Apr
17 Apr
8-10 wk
1 Jun
12 Jun
2 wk after
Sweet William
Dianthus barbatus
24 Mar – 7 Apr
6-8 wk
19 May
0 wk
29 May
1 wk after
Snow-on-the-mountain
Euphorbia marginata
6 – 20 Apr
1 May
6-8 wk
1 Jun
12 Jun
2 wk after
25 Jul
10 wk after
Pinnate dahlia
Dahlia × pinnata
4 – 18 Apr
11 May
6-8 wk
30 May
22 Jun
2 wk after
Pinnate dahlia (tubers)
Dahlia × pinnata
Fleece
6 Apr – 4 May
31 May
4-8 wk
1 Jun
28 Jun
2 wk after
1 Jun
18 Jun
2 wk after
Foxglove
Digitalis purpurea
10 – 24 Mar
8-10 wk
19 May
0 wk
1 Jun
2 wk after
Busy lizzie
Impatiens walleriana
28 Mar – 25 Apr
17 May
8-12 wk
20 Jun
12 Jul
5 wk after
Creeping zinnia
Sanvitalia procumbens
6 – 20 Apr
11 May
6-8 wk
1 Jun
22 Jun
2 wk after
Hyacinth bean
Dolichos lablab
Season too short
20 Apr – 4 May
4-6 wk
1 Jun
2 wk after
Chinese lantern
Physalis alkekengi
12 – 26 Mar
13 Apr
8-10 wk
21 May
8 Jun
0 wk
Love in a mist
Nigella damascena
19 May
23 Jun
0 wk
20 May
13 Jun
0 wk
Strawflower
Xerochrysum bracteatum
Fleece
30 Mar – 13 Apr
5 May
6-8 wk
25 May
16 Jun
1 wk after
8 Jul
7 wk after
Purple-top vervain
Verbena bonariensis
26 Feb – 26 Mar
13 Apr
8-12 wk
21 May
8 Jun
0 wk
Cardoon
Cynara cardunculus
Greenhouse
24 Feb – 24 Mar
14 Mar
8-12 wk
19 May
0 wk
Regal-foxtail
Ptilotus nobilis
Greenhouse
2 – 30 Mar
27 Apr
8-12 wk
25 May
22 Jun
1 wk after
Globe amaranth
Gomphrena globosa
Greenhouse
30 Mar – 13 Apr
11 May
6-8 wk
25 May
22 Jun
1 wk after
Corn poppy
Papaver rhoeas
19 May
8 Jul
0 wk
20 May
28 Jun
0 wk
Snapdragon
Antirrhinum majus
24 Feb – 24 Mar
3 May
8-12 wk
19 May
28 Jun
0 wk
29 May
18 Jun
1 wk after
Flossflower
Ageratum houstonianum
Fleece
23 Mar – 6 Apr
11 May
8-10 wk
1 Jun
6 Jul
2 wk after
Sweet pea
Lathyrus odoratus
24 Mar – 14 Apr
24 May
5-8 wk
19 May
28 Jun
0 wk
Stock
Matthiola incana
24 Mar – 7 Apr
27 May
6-8 wk
19 May
8 Jul
0 wk
1 Jun
28 Jun
2 wk after
Wormwood
Artemisia absinthium
24 Mar – 7 Apr
27 Apr
6-8 wk
19 May
8 Jun
0 wk
1 Jun
2 wk after
Mexican sunflower
Tithonia rotundifolia
Greenhouse
13 – 27 Apr
20 May
4-6 wk
25 May
17 Jun
1 wk after
Garden pansy
Viola × wittrockiana
10 – 24 Mar
13 May
8-10 wk
19 May
8 Jul
0 wk
29 May
28 Jun
1 wk after
Petunia
Petunia
9 Mar – 6 Apr
17 Apr
8-12 wk
1 Jun
12 Jun
2 wk after
Sweet Scabious
Scabiosa atropurpurea
26 Mar – 9 Apr
27 Apr
6-8 wk
21 May
8 Jun
0 wk
1 Jul
6 wk after
Common zinnia
Zinnia elegans
Fleece
13 – 27 Apr
4 Jun
4-6 wk
25 May
2 Jul
1 wk after
Common morning glory
Ipomoea purpurea
Greenhouse
20 Apr – 4 May
11 Jun
3-5 wk
25 May
2 Jul
1 wk after
Garden cosmos
Cosmos bipinnatus
20 Apr – 4 May
25 May
4-6 wk
1 Jun
22 Jun
2 wk after
1 Jul
6 wk after
Scarlet milkweed
Asclepias curassavica
Greenhouse
9 Mar – 6 Apr
27 May
8-12 wk
1 Jun
22 Jul
2 wk after
Bee balm
Monarda didyma
24 Feb – 24 Mar
13 Apr
8-12 wk
19 May
8 Jun
0 wk
13 Jun
4 wk after
Yarrow
Achillea millefolium
24 Mar – 7 Apr
28 Mar
6-8 wk
19 May
0 wk
1 Jun
2 wk after
Safflower
Carthamus tinctorius
19 May
8 Jun
0 wk
20 May
29 May
0 wk
Iceland poppy
Papaver nudicaule
Season too short
24 Mar – 7 Apr
17 May
6-8 wk
19 May
28 Jun
0 wk
3 May
18 Jun
2 wk before
Bishop's flower
Ammi majus
7 – 21 Apr
31 May
4-6 wk
19 May
28 Jun
0 wk
1 Jun
18 Jun
2 wk after
Drumsticks
Pycnosorus globosus
Greenhouse
2 – 16 Mar
30 Mar
10-12 wk
25 May
8 Jun
1 wk after
Sunflower
Helianthus annuus
4 – 11 May
7 Jun
3-4 wk
1 Jun
28 Jun
2 wk after
13 Jun
18 Jun
4 wk after
China aster
Callistephus chinensis
6 – 20 Apr
27 May
6-8 wk
1 Jun
8 Jul
2 wk after
1 Jul
6 wk after
Annual phlox
Phlox drummondii
30 Mar – 13 Apr
11 May
6-8 wk
25 May
22 Jun
1 wk after
1 Jul
6 wk after
Hollyhock
Alcea rosea
24 Mar – 7 Apr
6-8 wk
19 May
0 wk
1 Jun
2 wk after
Alpine delphinium
Delphinium elatum
24 Feb – 24 Mar
13 Apr
8-12 wk
19 May
8 Jun
0 wk
13 Jun
4 wk after
African marigold
Tagetes erecta
6 – 20 Apr
11 May
6-8 wk
1 Jun
22 Jun
2 wk after
Black-eyed Susan
Rudbeckia hirta
26 Mar – 9 Apr
17 May
6-8 wk
21 May
28 Jun
0 wk
1 Jul
6 wk after
Wood sage
Salvia nemorosa
10 – 24 Mar
3 Apr
8-10 wk
19 May
29 May
0 wk
13 Jun
4 wk after
Black-eyed susan vine
Thunbergia alata
Greenhouse
16 Mar – 13 Apr
21 May
6-10 wk
25 May
2 Jul
1 wk after
California goldenpoppy
Eschscholzia californica
19 May
8 Jul
0 wk
20 May
28 Jun
0 wk
Painted tongue
Salpiglossis sinuata
23 Mar – 6 Apr
3 May
8-10 wk
1 Jun
28 Jun
2 wk after
Water forget-me-not
Myosotis scorpioides
24 Mar – 7 Apr
27 Apr
6-8 wk
19 May
8 Jun
0 wk
1 Jun
2 wk after