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Method
Rel. frost
Last spring frost (0°C) 28 May Normal year · 20 years of data
Frost-free season 104 days 28 May – 9 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)
9 – 23 Apr
13 Jun
5-7 wk
28 May
18 Jul
0 wk
29 May
8 Jul
0 wk
Broccoli
Brassica oleracea (Italica-gruppen)
16 – 30 Apr
25 Jun
4-6 wk
28 May
23 Jul
0 wk
29 May
13 Jul
0 wk
Chili pepper
Capsicum annuum
Greenhouse
11 Mar – 8 Apr
27 Mar
8-12 wk
3 Jun
1 wk after
Curly Kale
Brassica oleracea (Curly Kale-gruppen)
9 – 23 Apr
8 Jun
5-7 wk
28 May
13 Jul
0 wk
28 May
3 Jul
0 wk
Garden cucumber
Cucumis sativus
Fleece
13 – 20 May
21 May
3-4 wk
10 Jun
11 Jun
2 wk after
Florence Fennel
Foeniculum vulgare
Fleece
6 – 13 May
31 May
4-5 wk
10 Jun
28 Jun
2 wk after
22 Jun
4 wk after
Butter bean
Phaseolus lunatus
Season too short
8 – 15 Jun
3-4 wk
6 Jul
6 wk after
Onion
Allium cepa (Cepa-gruppen)
Fleece
5 Mar – 2 Apr
26 Mar
8-12 wk
28 May
0 wk
3 Jun
1 wk after
Onion (sets)
Allium cepa (Cepa-gruppen)
29 May
2 Jun
0 wk
29 May
0 wk
Maize
Zea mays
Fleece
6 – 13 May
11 May
3-4 wk
3 Jun
1 wk after
Swiss Chard
Beta vulgaris (Flavescens-gruppen)
2 – 9 May
27 Jun
3-4 wk
30 May
18 Jul
0 wk
10 Jun
8 Jul
2 wk after
Carrot
Daucus carota subsp. sativus var. sativus
28 May
3 Jul
0 wk
28 May
23 Jun
0 wk
Palm Kale
Brassica oleracea (Palm Kale-gruppen)
9 – 23 Apr
8 Jun
5-7 wk
28 May
13 Jul
0 wk
28 May
3 Jul
0 wk
Potato
Solanum tuberosum
26 Apr – 10 May
16 May
4-6 wk
7 Jun
13 Jun
1 wk after
7 Jun
1 wk after
Ornamental Kale
Brassica oleracea (Ornamental-gruppen)
9 – 23 Apr
18 Jun
5-7 wk
28 May
23 Jul
0 wk
29 May
13 Jul
0 wk
Pumpkin
Cucurbita pepo
Fleece
13 – 20 May
14 Jun
3-4 wk
10 Jun
5 Jul
2 wk after
Beetroot
Beta vulgaris (Conditiva-gruppen)
2 – 9 May
19 May
3-4 wk
30 May
9 Jun
0 wk
10 Jun
2 wk after
Red Cabbage
Brassica oleracea (Red Cabbage-gruppen)
16 – 30 Apr
20 Jun
4-6 wk
28 May
18 Jul
0 wk
Lettuce
Lactuca sativa
30 Apr – 7 May
7 Jul
3-4 wk
28 May
28 Jul
0 wk
29 May
18 Jul
0 wk
Savoy Cabbage
Brassica oleracea (Savoy Cabbage-gruppen)
16 – 30 Apr
20 Jun
4-6 wk
28 May
18 Jul
0 wk
Shallot (bulbs)
Allium cepa (Aggregatum-gruppen)
30 Apr – 14 May
22 May
2-4 wk
28 May
5 Jun
0 wk
28 May
0 wk
Shallot (sets)
Allium cepa (Aggregatum-gruppen)
29 May
2 Jun
0 wk
29 May
0 wk
Spinach
Spinacia oleracea
30 Apr – 7 May
22 Jul
3-4 wk
28 May
12 Aug
0 wk
25 May
2 Aug
0 wk
Sweet potato
Ipomoea batatas
22 Jun – 6 Jul
4-6 wk
3 Aug
10 wk after
Garden tomato
Solanum lycopersicum
Fleece
8 – 22 Apr
20 Apr
6-8 wk
3 Jun
1 wk after
Tomatillo
Physalis ixocarpa
Common Bean
Phaseolus vulgaris
13 – 27 May
28 May
2-4 wk
10 Jun
11 Jun
2 wk after
10 Jul
6 wk after
White Cabbage
Brassica oleracea (White Cabbage-gruppen)
16 – 30 Apr
20 Jun
4-6 wk
28 May
18 Jul
0 wk
Garden pea
Pisum sativum
30 Apr – 7 May
22 Jun
3-4 wk
28 May
13 Jul
0 wk
29 May
3 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
Fleece
29 Apr – 13 May
23 May
4-6 wk
10 Jun
20 Jun
2 wk after
Lemon balm
Melissa officinalis
19 Mar – 2 Apr
18 May
8-10 wk
28 May
13 Jul
0 wk
22 Jun
3 Jul
4 wk after
Dill
Anethum graveolens
29 May
18 Jul
0 wk
Wild chives
Allium schoenoprasum
2 – 16 Apr
1 Jun
6-8 wk
28 May
13 Jul
0 wk
29 May
3 Jul
0 wk
Spearmint
Mentha spicata
5 Mar – 2 Apr
18 May
8-12 wk
28 May
13 Jul
0 wk
22 Jun
3 Jul
4 wk after
Coriander
Coriandrum sativum
28 May
7 Aug
0 wk
10 Jun
28 Jul
2 wk after
Garden sage
Salvia officinalis
21 Mar – 4 Apr
3 May
8-10 wk
30 May
28 Jun
0 wk
Common thyme
Thymus vulgaris
19 Mar – 2 Apr
8 May
8-10 wk
28 May
3 Jul
0 wk
Oregano
Origanum vulgare
2 – 16 Apr
22 May
6-8 wk
28 May
3 Jul
0 wk
22 Jun
23 Jun
4 wk after
Parsley
Petroselinum crispum
2 – 16 Apr
22 May
6-8 wk
28 May
3 Jul
0 wk
29 May
23 Jun
0 wk
Rosemary
Salvia rosmarinus
21 Feb – 21 Mar
23 Mar
10-14 wk
30 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
Fleece
13 – 20 May
30 May
3-4 wk
10 Jun
20 Jun
2 wk after
Cornflower
Centaurea cyanus
28 May
13 Jul
0 wk
29 May
3 Jul
0 wk
Statice
Limonium sinuatum
1 – 15 Apr
19 Apr
8-10 wk
10 Jun
14 Jun
2 wk after
Sweet William
Dianthus barbatus
2 – 16 Apr
6-8 wk
28 May
0 wk
7 Jun
1 wk after
Snow-on-the-mountain
Euphorbia marginata
15 – 29 Apr
3 May
6-8 wk
10 Jun
14 Jun
2 wk after
3 Aug
10 wk after
Pinnate dahlia
Dahlia × pinnata
13 – 27 Apr
7 May
6-8 wk
8 Jun
18 Jun
2 wk after
Pinnate dahlia (tubers)
Dahlia × pinnata
27 Apr – 25 May
21 May
4-8 wk
22 Jun
4 wk after
22 Jun
4 wk after
Foxglove
Digitalis purpurea
19 Mar – 2 Apr
8-10 wk
28 May
0 wk
10 Jun
2 wk after
Busy lizzie
Impatiens walleriana
6 Apr – 4 May
10 Jun
8-12 wk
29 Jun
5 Aug
5 wk after
Creeping zinnia
Sanvitalia procumbens
15 – 29 Apr
13 May
6-8 wk
10 Jun
24 Jun
2 wk after
Hyacinth bean
Dolichos lablab
Season too short
29 Apr – 13 May
4-6 wk
10 Jun
2 wk after
Chinese lantern
Physalis alkekengi
21 Mar – 4 Apr
13 Apr
8-10 wk
30 May
8 Jun
0 wk
Love in a mist
Nigella damascena
28 May
28 Jun
0 wk
29 May
18 Jun
0 wk
Strawflower
Xerochrysum bracteatum
15 – 29 Apr
23 Apr
6-8 wk
10 Jun
2 wk after
3 Aug
10 wk after
Purple-top vervain
Verbena bonariensis
7 Mar – 4 Apr
13 Apr
8-12 wk
30 May
8 Jun
0 wk
Cardoon
Cynara cardunculus
Fleece
11 Mar – 8 Apr
19 Mar
8-12 wk
3 Jun
1 wk after
Regal-foxtail
Ptilotus nobilis
Fleece
18 Mar – 15 Apr
15 Apr
8-12 wk
10 Jun
10 Jun
2 wk after
Globe amaranth
Gomphrena globosa
Fleece
15 – 29 Apr
29 Apr
6-8 wk
10 Jun
10 Jun
2 wk after
Corn poppy
Papaver rhoeas
28 May
13 Jul
0 wk
29 May
3 Jul
0 wk
Snapdragon
Antirrhinum majus
5 Mar – 2 Apr
8 May
8-12 wk
28 May
3 Jul
0 wk
7 Jun
23 Jun
1 wk after
Flossflower
Ageratum houstonianum
Fleece
1 – 15 Apr
10 May
8-10 wk
10 Jun
5 Jul
2 wk after
Sweet pea
Lathyrus odoratus
2 – 23 Apr
29 May
5-8 wk
28 May
3 Jul
0 wk
Stock
Matthiola incana
2 – 16 Apr
1 Jun
6-8 wk
28 May
13 Jul
0 wk
10 Jun
3 Jul
2 wk after
Wormwood
Artemisia absinthium
2 – 16 Apr
2 May
6-8 wk
28 May
13 Jun
0 wk
10 Jun
2 wk after
Mexican sunflower
Tithonia rotundifolia
Fleece
29 Apr – 13 May
8 May
4-6 wk
10 Jun
2 wk after
Garden pansy
Viola × wittrockiana
19 Mar – 2 Apr
18 May
8-10 wk
28 May
13 Jul
0 wk
7 Jun
3 Jul
1 wk after
Petunia
Petunia
18 Mar – 15 Apr
19 Apr
8-12 wk
10 Jun
14 Jun
2 wk after
Sweet Scabious
Scabiosa atropurpurea
4 – 18 Apr
27 Apr
6-8 wk
30 May
8 Jun
0 wk
10 Jul
6 wk after
Common zinnia
Zinnia elegans
29 Apr – 13 May
23 May
4-6 wk
10 Jun
20 Jun
2 wk after
Common morning glory
Ipomoea purpurea
Fleece
6 – 20 May
30 May
3-5 wk
10 Jun
20 Jun
2 wk after
Garden cosmos
Cosmos bipinnatus
29 Apr – 13 May
21 May
4-6 wk
10 Jun
18 Jun
2 wk after
10 Jul
6 wk after
Scarlet milkweed
Asclepias curassavica
Fleece
6 Apr – 4 May
15 May
8-12 wk
29 Jun
10 Jul
5 wk after
Bee balm
Monarda didyma
5 Mar – 2 Apr
18 Apr
8-12 wk
28 May
13 Jun
0 wk
22 Jun
4 wk after
Yarrow
Achillea millefolium
2 – 16 Apr
2 Apr
6-8 wk
28 May
0 wk
10 Jun
2 wk after
Safflower
Carthamus tinctorius
28 May
13 Jun
0 wk
29 May
3 Jun
0 wk
Iceland poppy
Papaver nudicaule
Season too short
2 – 16 Apr
22 May
6-8 wk
28 May
3 Jul
0 wk
12 May
23 Jun
2 wk before
Bishop's flower
Ammi majus
16 – 30 Apr
5 Jun
4-6 wk
28 May
3 Jul
0 wk
10 Jun
23 Jun
2 wk after
Drumsticks
Pycnosorus globosus
Greenhouse
11 – 25 Mar
31 Mar
10-12 wk
3 Jun
9 Jun
1 wk after
Sunflower
Helianthus annuus
13 – 20 May
31 May
3-4 wk
10 Jun
21 Jun
2 wk after
22 Jun
4 wk after
China aster
Callistephus chinensis
15 – 29 Apr
20 May
6-8 wk
10 Jun
1 Jul
2 wk after
10 Jul
6 wk after
Annual phlox
Phlox drummondii
8 – 22 Apr
13 May
6-8 wk
3 Jun
24 Jun
1 wk after
10 Jul
6 wk after
Hollyhock
Alcea rosea
2 – 16 Apr
6-8 wk
28 May
0 wk
10 Jun
2 wk after
Alpine delphinium
Delphinium elatum
5 Mar – 2 Apr
18 Apr
8-12 wk
28 May
13 Jun
0 wk
22 Jun
4 wk after
African marigold
Tagetes erecta
15 – 29 Apr
13 May
6-8 wk
10 Jun
24 Jun
2 wk after
Black-eyed Susan
Rudbeckia hirta
4 – 18 Apr
10 May
6-8 wk
30 May
21 Jun
0 wk
10 Jul
6 wk after
Wood sage
Salvia nemorosa
19 Mar – 2 Apr
8 Apr
8-10 wk
28 May
3 Jun
0 wk
22 Jun
4 wk after
Black-eyed susan vine
Thunbergia alata
Fleece
1 – 29 Apr
9 May
6-10 wk
10 Jun
20 Jun
2 wk after
California goldenpoppy
Eschscholzia californica
28 May
12 Jul
0 wk
29 May
2 Jul
0 wk
Painted tongue
Salpiglossis sinuata
1 – 15 Apr
15 Apr
8-10 wk
10 Jun
10 Jun
2 wk after
Water forget-me-not
Myosotis scorpioides
2 – 16 Apr
2 May
6-8 wk
28 May
13 Jun
0 wk
10 Jun
2 wk after