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Method
Rel. frost
Last spring frost (0°C) 19 May Normal year · 20 years of data
Frost-free season 138 days 19 May – 4 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
18 Jun
5-7 wk
19 May
23 Jul
0 wk
12 May
13 Jul
1 wk before
Broccoli
Brassica oleracea (Italica-gruppen)
7 – 21 Apr
30 Jun
4-6 wk
19 May
28 Jul
0 wk
12 May
18 Jul
1 wk before
Chili pepper
Capsicum annuum
Greenhouse
2 – 30 Mar
16 Apr
8-12 wk
25 May
11 Jun
1 wk after
Curly Kale
Brassica oleracea (Curly Kale-gruppen)
31 Mar – 14 Apr
13 Jun
5-7 wk
19 May
18 Jul
0 wk
7 May
8 Jul
2 wk before
Garden cucumber
Cucumis sativus
Fleece
4 – 11 May
10 Jun
3-4 wk
1 Jun
1 Jul
2 wk after
Florence Fennel
Foeniculum vulgare
16 – 23 May
4 Jun
4-5 wk
20 Jun
2 Jul
5 wk after
24 Jun
5 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)
24 Feb – 24 Mar
23 Mar
8-12 wk
19 May
0 wk
29 May
1 wk after
Onion (sets)
Allium cepa (Cepa-gruppen)
12 May
7 Jun
1 wk before
12 May
28 May
1 wk before
Maize
Zea mays
4 – 11 May
8 May
3-4 wk
1 Jun
2 wk after
Swiss Chard
Beta vulgaris (Flavescens-gruppen)
23 – 30 Apr
7 Jul
3-4 wk
21 May
28 Jul
0 wk
29 May
18 Jul
1 wk after
Carrot
Daucus carota subsp. sativus var. sativus
19 May
8 Jul
0 wk
7 May
28 Jun
2 wk before
Palm Kale
Brassica oleracea (Palm Kale-gruppen)
31 Mar – 14 Apr
13 Jun
5-7 wk
19 May
18 Jul
0 wk
7 May
8 Jul
2 wk before
Potato
Solanum tuberosum
12 – 26 Apr
18 May
4-6 wk
24 May
15 Jun
1 wk after
24 May
5 Jun
1 wk after
Ornamental Kale
Brassica oleracea (Ornamental-gruppen)
31 Mar – 14 Apr
23 Jun
5-7 wk
19 May
28 Jul
0 wk
12 May
18 Jul
1 wk before
Pumpkin
Cucurbita pepo
23 – 30 May
15 Jun
3-4 wk
20 Jun
6 Jul
5 wk after
Beetroot
Beta vulgaris (Conditiva-gruppen)
23 – 30 Apr
19 May
3-4 wk
21 May
9 Jun
0 wk
29 May
30 May
1 wk after
Red Cabbage
Brassica oleracea (Red Cabbage-gruppen)
7 – 21 Apr
25 Jun
4-6 wk
19 May
23 Jul
0 wk
Lettuce
Lactuca sativa
21 – 28 Apr
12 Jul
3-4 wk
19 May
2 Aug
0 wk
12 May
23 Jul
1 wk before
Savoy Cabbage
Brassica oleracea (Savoy Cabbage-gruppen)
7 – 21 Apr
25 Jun
4-6 wk
19 May
23 Jul
0 wk
Shallot (bulbs)
Allium cepa (Aggregatum-gruppen)
9 – 23 Apr
28 May
2-4 wk
7 May
11 Jun
2 wk before
7 May
1 Jun
2 wk before
Shallot (sets)
Allium cepa (Aggregatum-gruppen)
12 May
7 Jun
1 wk before
12 May
28 May
1 wk before
Spinach
Spinacia oleracea
21 – 28 Apr
27 Jul
3-4 wk
19 May
17 Aug
0 wk
1 May
7 Aug
3 wk before
Sweet potato
Ipomoea batatas
15 – 29 Jun
4-6 wk
27 Jul
10 wk after
Garden tomato
Solanum lycopersicum
6 – 20 Apr
17 Apr
6-8 wk
1 Jun
2 wk after
Tomatillo
Physalis ixocarpa
Common Bean
Phaseolus vulgaris
4 – 18 May
17 Jun
2-4 wk
1 Jun
1 Jul
2 wk after
24 Jun
5 wk after
White Cabbage
Brassica oleracea (White Cabbage-gruppen)
7 – 21 Apr
25 Jun
4-6 wk
19 May
23 Jul
0 wk
Garden pea
Pisum sativum
21 – 28 Apr
27 Jun
3-4 wk
19 May
18 Jul
0 wk
12 May
8 Jul
1 wk before

Herbs

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