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Method
Rel. frost
Last spring frost (0°C) 23 May Normal year · 20 years of data
Frost-free season 114 days 23 May – 14 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)
4 – 18 Apr
10 Jun
5-7 wk
23 May
15 Jul
0 wk
24 May
5 Jul
0 wk
Broccoli
Brassica oleracea (Italica-gruppen)
11 – 25 Apr
22 Jun
4-6 wk
23 May
20 Jul
0 wk
24 May
10 Jul
0 wk
Chili pepper
Capsicum annuum
Season too short
6 Mar – 3 Apr
8-12 wk
29 May
1 wk after
Curly Kale
Brassica oleracea (Curly Kale-gruppen)
4 – 18 Apr
5 Jun
5-7 wk
23 May
10 Jul
0 wk
23 May
30 Jun
0 wk
Garden cucumber
Cucumis sativus
Greenhouse
1 – 8 May
29 May
3-4 wk
29 May
19 Jun
1 wk after
Florence Fennel
Foeniculum vulgare
Greenhouse
24 Apr – 1 May
2 Jun
4-5 wk
29 May
30 Jun
1 wk after
5 Jun
20 Jun
2 wk after
Butter bean
Phaseolus lunatus
Season too short
3 – 10 Jun
3-4 wk
1 Jul
6 wk after
Onion
Allium cepa (Cepa-gruppen)
Greenhouse
28 Feb – 28 Mar
17 Mar
8-12 wk
23 May
0 wk
23 May
0 wk
Onion (sets)
Allium cepa (Cepa-gruppen)
Fleece
20 May
25 May
0 wk
20 May
0 wk
Maize
Zea mays
Greenhouse
25 Apr – 2 May
19 May
3-4 wk
23 May
9 Jun
0 wk
Swiss Chard
Beta vulgaris (Flavescens-gruppen)
27 Apr – 4 May
25 Jun
3-4 wk
25 May
16 Jul
0 wk
5 Jun
6 Jul
2 wk after
Carrot
Daucus carota subsp. sativus var. sativus
23 May
30 Jun
0 wk
23 May
20 Jun
0 wk
Palm Kale
Brassica oleracea (Palm Kale-gruppen)
4 – 18 Apr
5 Jun
5-7 wk
23 May
10 Jul
0 wk
23 May
30 Jun
0 wk
Potato
Solanum tuberosum
Fleece
12 – 26 Apr
6 May
4-6 wk
24 May
3 Jun
0 wk
24 May
24 May
0 wk
Ornamental Kale
Brassica oleracea (Ornamental-gruppen)
4 – 18 Apr
15 Jun
5-7 wk
23 May
20 Jul
0 wk
24 May
10 Jul
0 wk
Pumpkin
Cucurbita pepo
Greenhouse
1 – 8 May
17 Jun
3-4 wk
29 May
8 Jul
1 wk after
Beetroot
Beta vulgaris (Conditiva-gruppen)
27 Apr – 4 May
5 May
3-4 wk
25 May
26 May
0 wk
5 Jun
2 wk after
Red Cabbage
Brassica oleracea (Red Cabbage-gruppen)
11 – 25 Apr
17 Jun
4-6 wk
23 May
15 Jul
0 wk
Lettuce
Lactuca sativa
25 Apr – 2 May
4 Jul
3-4 wk
23 May
25 Jul
0 wk
24 May
15 Jul
0 wk
Savoy Cabbage
Brassica oleracea (Savoy Cabbage-gruppen)
11 – 25 Apr
17 Jun
4-6 wk
23 May
15 Jul
0 wk
Shallot (bulbs)
Allium cepa (Aggregatum-gruppen)
Fleece
19 Apr – 3 May
15 May
2-4 wk
17 May
29 May
1 wk before
17 May
19 May
1 wk before
Shallot (sets)
Allium cepa (Aggregatum-gruppen)
Fleece
20 May
25 May
0 wk
20 May
0 wk
Spinach
Spinacia oleracea
25 Apr – 2 May
19 Jul
3-4 wk
23 May
9 Aug
0 wk
20 May
30 Jul
0 wk
Sweet potato
Ipomoea batatas
17 Jun – 1 Jul
4-6 wk
29 Jul
10 wk after
Garden tomato
Solanum lycopersicum
Greenhouse
28 Mar – 11 Apr
28 Apr
6-8 wk
23 May
9 Jun
0 wk
Tomatillo
Physalis ixocarpa
Common Bean
Phaseolus vulgaris
Fleece
1 – 15 May
5 Jun
2-4 wk
29 May
19 Jun
1 wk after
17 Jun
4 wk after
White Cabbage
Brassica oleracea (White Cabbage-gruppen)
11 – 25 Apr
17 Jun
4-6 wk
23 May
15 Jul
0 wk
Garden pea
Pisum sativum
25 Apr – 2 May
19 Jun
3-4 wk
23 May
10 Jul
0 wk
24 May
30 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
17 Apr – 1 May
26 May
4-6 wk
29 May
23 Jun
1 wk after
Lemon balm
Melissa officinalis
14 – 28 Mar
15 May
8-10 wk
23 May
10 Jul
0 wk
17 Jun
30 Jun
4 wk after
Dill
Anethum graveolens
24 May
16 Jul
0 wk
Wild chives
Allium schoenoprasum
28 Mar – 11 Apr
29 May
6-8 wk
23 May
10 Jul
0 wk
24 May
30 Jun
0 wk
Spearmint
Mentha spicata
28 Feb – 28 Mar
15 May
8-12 wk
23 May
10 Jul
0 wk
17 Jun
30 Jun
4 wk after
Coriander
Coriandrum sativum
23 May
5 Aug
0 wk
5 Jun
26 Jul
2 wk after
Garden sage
Salvia officinalis
16 – 30 Mar
30 Apr
8-10 wk
25 May
25 Jun
0 wk
Common thyme
Thymus vulgaris
14 – 28 Mar
5 May
8-10 wk
23 May
30 Jun
0 wk
Oregano
Origanum vulgare
28 Mar – 11 Apr
19 May
6-8 wk
23 May
30 Jun
0 wk
17 Jun
20 Jun
4 wk after
Parsley
Petroselinum crispum
28 Mar – 11 Apr
19 May
6-8 wk
23 May
30 Jun
0 wk
24 May
20 Jun
0 wk
Rosemary
Salvia rosmarinus
16 Feb – 16 Mar
23 Mar
10-14 wk
25 May
1 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
1 – 8 May
2 Jun
3-4 wk
29 May
23 Jun
1 wk after
Cornflower
Centaurea cyanus
23 May
10 Jul
0 wk
24 May
30 Jun
0 wk
Statice
Limonium sinuatum
Fleece
20 Mar – 3 Apr
23 Apr
8-10 wk
29 May
18 Jun
1 wk after
Sweet William
Dianthus barbatus
28 Mar – 11 Apr
6-8 wk
23 May
0 wk
2 Jun
1 wk after
Snow-on-the-mountain
Euphorbia marginata
Fleece
3 – 17 Apr
7 May
6-8 wk
29 May
18 Jun
1 wk after
12 Jul
7 wk after
Pinnate dahlia
Dahlia × pinnata
8 – 22 Apr
2 May
6-8 wk
3 Jun
13 Jun
2 wk after
Pinnate dahlia (tubers)
Dahlia × pinnata
Greenhouse
3 Apr – 1 May
2 Jun
4-8 wk
29 May
30 Jun
1 wk after
29 May
20 Jun
1 wk after
Foxglove
Digitalis purpurea
14 – 28 Mar
8-10 wk
23 May
0 wk
5 Jun
2 wk after
Busy lizzie
Impatiens walleriana
1 – 29 Apr
30 May
8-12 wk
24 Jun
25 Jul
5 wk after
Creeping zinnia
Sanvitalia procumbens
Fleece
3 – 17 Apr
17 May
6-8 wk
29 May
28 Jun
1 wk after
Hyacinth bean
Dolichos lablab
Season too short
24 Apr – 8 May
4-6 wk
5 Jun
2 wk after
Chinese lantern
Physalis alkekengi
16 – 30 Mar
11 Apr
8-10 wk
25 May
6 Jun
0 wk
Love in a mist
Nigella damascena
23 May
25 Jun
0 wk
24 May
15 Jun
0 wk
Strawflower
Xerochrysum bracteatum
Fleece
3 – 17 Apr
27 Apr
6-8 wk
29 May
8 Jun
1 wk after
12 Jul
7 wk after
Purple-top vervain
Verbena bonariensis
2 – 30 Mar
11 Apr
8-12 wk
25 May
6 Jun
0 wk
Cardoon
Cynara cardunculus
Greenhouse
28 Feb – 28 Mar
16 Mar
8-12 wk
23 May
0 wk
Regal-foxtail
Ptilotus nobilis
Greenhouse
6 Mar – 3 Apr
18 Apr
8-12 wk
29 May
13 Jun
1 wk after
Globe amaranth
Gomphrena globosa
Greenhouse
3 – 17 Apr
2 May
6-8 wk
29 May
13 Jun
1 wk after
Corn poppy
Papaver rhoeas
23 May
10 Jul
0 wk
24 May
30 Jun
0 wk
Snapdragon
Antirrhinum majus
28 Feb – 28 Mar
5 May
8-12 wk
23 May
30 Jun
0 wk
2 Jun
20 Jun
1 wk after
Flossflower
Ageratum houstonianum
Fleece
27 Mar – 10 Apr
3 May
8-10 wk
5 Jun
28 Jun
2 wk after
Sweet pea
Lathyrus odoratus
28 Mar – 18 Apr
26 May
5-8 wk
23 May
30 Jun
0 wk
Stock
Matthiola incana
28 Mar – 11 Apr
29 May
6-8 wk
23 May
10 Jul
0 wk
5 Jun
30 Jun
2 wk after
Wormwood
Artemisia absinthium
28 Mar – 11 Apr
29 Apr
6-8 wk
23 May
10 Jun
0 wk
5 Jun
2 wk after
Mexican sunflower
Tithonia rotundifolia
Greenhouse
17 Apr – 1 May
11 May
4-6 wk
29 May
8 Jun
1 wk after
Garden pansy
Viola × wittrockiana
14 – 28 Mar
15 May
8-10 wk
23 May
10 Jul
0 wk
2 Jun
30 Jun
1 wk after
Petunia
Petunia
Fleece
6 Mar – 3 Apr
23 Apr
8-12 wk
29 May
18 Jun
1 wk after
Sweet Scabious
Scabiosa atropurpurea
30 Mar – 13 Apr
25 Apr
6-8 wk
25 May
6 Jun
0 wk
5 Jul
6 wk after
Common zinnia
Zinnia elegans
Fleece
17 Apr – 1 May
26 May
4-6 wk
29 May
23 Jun
1 wk after
Common morning glory
Ipomoea purpurea
Greenhouse
24 Apr – 8 May
2 Jun
3-5 wk
29 May
23 Jun
1 wk after
Garden cosmos
Cosmos bipinnatus
Fleece
17 Apr – 1 May
25 May
4-6 wk
29 May
22 Jun
1 wk after
17 Jun
4 wk after
Scarlet milkweed
Asclepias curassavica
Greenhouse
13 Mar – 10 Apr
18 May
8-12 wk
5 Jun
13 Jul
2 wk after
Bee balm
Monarda didyma
28 Feb – 28 Mar
15 Apr
8-12 wk
23 May
10 Jun
0 wk
17 Jun
4 wk after
Yarrow
Achillea millefolium
28 Mar – 11 Apr
30 Mar
6-8 wk
23 May
0 wk
5 Jun
2 wk after
Safflower
Carthamus tinctorius
23 May
10 Jun
0 wk
24 May
31 May
0 wk
Iceland poppy
Papaver nudicaule
Season too short
28 Mar – 11 Apr
19 May
6-8 wk
23 May
30 Jun
0 wk
7 May
20 Jun
2 wk before
Bishop's flower
Ammi majus
11 – 25 Apr
2 Jun
4-6 wk
23 May
30 Jun
0 wk
5 Jun
20 Jun
2 wk after
Drumsticks
Pycnosorus globosus
Greenhouse
6 – 20 Mar
24 Mar
10-12 wk
29 May
2 Jun
1 wk after
Sunflower
Helianthus annuus
Fleece
1 – 8 May
8 Jun
3-4 wk
29 May
29 Jun
1 wk after
5 Jun
19 Jun
2 wk after
China aster
Callistephus chinensis
10 – 24 Apr
20 May
6-8 wk
5 Jun
1 Jul
2 wk after
5 Jul
6 wk after
Annual phlox
Phlox drummondii
3 – 17 Apr
8 May
6-8 wk
29 May
19 Jun
1 wk after
5 Jul
6 wk after
Hollyhock
Alcea rosea
28 Mar – 11 Apr
6-8 wk
23 May
0 wk
5 Jun
2 wk after
Alpine delphinium
Delphinium elatum
28 Feb – 28 Mar
15 Apr
8-12 wk
23 May
10 Jun
0 wk
17 Jun
4 wk after
African marigold
Tagetes erecta
Fleece
3 – 17 Apr
17 May
6-8 wk
29 May
28 Jun
1 wk after
Black-eyed Susan
Rudbeckia hirta
30 Mar – 13 Apr
10 May
6-8 wk
25 May
21 Jun
0 wk
5 Jul
6 wk after
Wood sage
Salvia nemorosa
14 – 28 Mar
5 Apr
8-10 wk
23 May
31 May
0 wk
17 Jun
4 wk after
Black-eyed susan vine
Thunbergia alata
Greenhouse
20 Mar – 17 Apr
12 May
6-10 wk
29 May
23 Jun
1 wk after
California goldenpoppy
Eschscholzia californica
23 May
9 Jul
0 wk
24 May
29 Jun
0 wk
Painted tongue
Salpiglossis sinuata
Fleece
20 Mar – 3 Apr
1 May
8-10 wk
29 May
26 Jun
1 wk after
Water forget-me-not
Myosotis scorpioides
28 Mar – 11 Apr
29 Apr
6-8 wk
23 May
10 Jun
0 wk
5 Jun
2 wk after