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Method
Rel. frost
Last spring frost (0°C) 27 May Normal year · 20 years of data
Frost-free season 106 days 27 May – 10 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)
8 – 22 Apr
11 Jun
5-7 wk
27 May
16 Jul
0 wk
28 May
6 Jul
0 wk
Broccoli
Brassica oleracea (Italica-gruppen)
15 – 29 Apr
23 Jun
4-6 wk
27 May
21 Jul
0 wk
28 May
11 Jul
0 wk
Chili pepper
Capsicum annuum
Season too short
10 Mar – 7 Apr
13 Mar
8-12 wk
2 Jun
1 wk after
Curly Kale
Brassica oleracea (Curly Kale-gruppen)
8 – 22 Apr
6 Jun
5-7 wk
27 May
11 Jul
0 wk
27 May
1 Jul
0 wk
Garden cucumber
Cucumis sativus
Greenhouse
5 – 12 May
29 May
3-4 wk
2 Jun
19 Jun
1 wk after
Florence Fennel
Foeniculum vulgare
Fleece
5 – 12 May
31 May
4-5 wk
9 Jun
28 Jun
2 wk after
21 Jun
4 wk after
Butter bean
Phaseolus lunatus
Season too short
7 – 14 Jun
3-4 wk
5 Jul
6 wk after
Onion
Allium cepa (Cepa-gruppen)
Greenhouse
4 Mar – 1 Apr
18 Mar
8-12 wk
27 May
0 wk
27 May
0 wk
Onion (sets)
Allium cepa (Cepa-gruppen)
Fleece
24 May
25 May
0 wk
24 May
0 wk
Maize
Zea mays
Greenhouse
29 Apr – 6 May
19 May
3-4 wk
27 May
9 Jun
0 wk
Swiss Chard
Beta vulgaris (Flavescens-gruppen)
1 – 8 May
27 Jun
3-4 wk
29 May
18 Jul
0 wk
9 Jun
8 Jul
2 wk after
Carrot
Daucus carota subsp. sativus var. sativus
27 May
1 Jul
0 wk
27 May
21 Jun
0 wk
Palm Kale
Brassica oleracea (Palm Kale-gruppen)
8 – 22 Apr
6 Jun
5-7 wk
27 May
11 Jul
0 wk
27 May
1 Jul
0 wk
Potato
Solanum tuberosum
Fleece
16 – 30 Apr
6 May
4-6 wk
28 May
3 Jun
0 wk
28 May
0 wk
Ornamental Kale
Brassica oleracea (Ornamental-gruppen)
8 – 22 Apr
16 Jun
5-7 wk
27 May
21 Jul
0 wk
28 May
11 Jul
0 wk
Pumpkin
Cucurbita pepo
Fleece
12 – 19 May
3 Jun
3-4 wk
9 Jun
24 Jun
2 wk after
Beetroot
Beta vulgaris (Conditiva-gruppen)
Fleece
29 Apr – 6 May
12 May
3-4 wk
27 May
2 Jun
0 wk
2 Jun
1 wk after
Red Cabbage
Brassica oleracea (Red Cabbage-gruppen)
15 – 29 Apr
18 Jun
4-6 wk
27 May
16 Jul
0 wk
Lettuce
Lactuca sativa
29 Apr – 6 May
5 Jul
3-4 wk
27 May
26 Jul
0 wk
28 May
16 Jul
0 wk
Savoy Cabbage
Brassica oleracea (Savoy Cabbage-gruppen)
15 – 29 Apr
18 Jun
4-6 wk
27 May
16 Jul
0 wk
Shallot (bulbs)
Allium cepa (Aggregatum-gruppen)
Fleece
23 Apr – 7 May
14 May
2-4 wk
21 May
28 May
1 wk before
21 May
1 wk before
Shallot (sets)
Allium cepa (Aggregatum-gruppen)
Fleece
24 May
25 May
0 wk
24 May
0 wk
Spinach
Spinacia oleracea
29 Apr – 6 May
20 Jul
3-4 wk
27 May
10 Aug
0 wk
24 May
31 Jul
0 wk
Sweet potato
Ipomoea batatas
21 Jun – 5 Jul
4-6 wk
2 Aug
10 wk after
Garden tomato
Solanum lycopersicum
Greenhouse
1 – 15 Apr
28 Apr
6-8 wk
27 May
9 Jun
0 wk
Tomatillo
Physalis ixocarpa
Common Bean
Phaseolus vulgaris
Fleece
5 – 19 May
5 Jun
2-4 wk
2 Jun
19 Jun
1 wk after
21 Jun
4 wk after
White Cabbage
Brassica oleracea (White Cabbage-gruppen)
15 – 29 Apr
18 Jun
4-6 wk
27 May
16 Jul
0 wk
Garden pea
Pisum sativum
29 Apr – 6 May
20 Jun
3-4 wk
27 May
11 Jul
0 wk
28 May
1 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
21 Apr – 5 May
27 May
4-6 wk
2 Jun
24 Jun
1 wk after
Lemon balm
Melissa officinalis
18 Mar – 1 Apr
16 May
8-10 wk
27 May
11 Jul
0 wk
21 Jun
1 Jul
4 wk after
Dill
Anethum graveolens
28 May
18 Jul
0 wk
Wild chives
Allium schoenoprasum
1 – 15 Apr
30 May
6-8 wk
27 May
11 Jul
0 wk
28 May
1 Jul
0 wk
Spearmint
Mentha spicata
4 Mar – 1 Apr
16 May
8-12 wk
27 May
11 Jul
0 wk
21 Jun
1 Jul
4 wk after
Coriander
Coriandrum sativum
27 May
7 Aug
0 wk
9 Jun
28 Jul
2 wk after
Garden sage
Salvia officinalis
20 Mar – 3 Apr
1 May
8-10 wk
29 May
26 Jun
0 wk
Common thyme
Thymus vulgaris
18 Mar – 1 Apr
6 May
8-10 wk
27 May
1 Jul
0 wk
Oregano
Origanum vulgare
1 – 15 Apr
20 May
6-8 wk
27 May
1 Jul
0 wk
21 Jun
21 Jun
4 wk after
Parsley
Petroselinum crispum
1 – 15 Apr
20 May
6-8 wk
27 May
1 Jul
0 wk
28 May
21 Jun
0 wk
Rosemary
Salvia rosmarinus
Fleece
18 Feb – 18 Mar
2 Apr
10-14 wk
27 May
11 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
5 – 12 May
3 Jun
3-4 wk
2 Jun
24 Jun
1 wk after
Cornflower
Centaurea cyanus
27 May
11 Jul
0 wk
28 May
1 Jul
0 wk
Statice
Limonium sinuatum
Fleece
24 Mar – 7 Apr
23 Apr
8-10 wk
2 Jun
18 Jun
1 wk after
Sweet William
Dianthus barbatus
1 – 15 Apr
6-8 wk
27 May
0 wk
6 Jun
1 wk after
Snow-on-the-mountain
Euphorbia marginata
Fleece
7 – 21 Apr
7 May
6-8 wk
2 Jun
18 Jun
1 wk after
16 Jul
7 wk after
Pinnate dahlia
Dahlia × pinnata
12 – 26 Apr
3 May
6-8 wk
7 Jun
14 Jun
2 wk after
Pinnate dahlia (tubers)
Dahlia × pinnata
Fleece
14 Apr – 12 May
28 May
4-8 wk
9 Jun
25 Jun
2 wk after
9 Jun
15 Jun
2 wk after
Foxglove
Digitalis purpurea
18 Mar – 1 Apr
8-10 wk
27 May
0 wk
9 Jun
2 wk after
Busy lizzie
Impatiens walleriana
5 Apr – 3 May
30 May
8-12 wk
28 Jun
25 Jul
5 wk after
Creeping zinnia
Sanvitalia procumbens
14 – 28 Apr
8 May
6-8 wk
9 Jun
19 Jun
2 wk after
Hyacinth bean
Dolichos lablab
Season too short
28 Apr – 12 May
4-6 wk
9 Jun
2 wk after
Chinese lantern
Physalis alkekengi
20 Mar – 3 Apr
13 Apr
8-10 wk
29 May
8 Jun
0 wk
Love in a mist
Nigella damascena
27 May
26 Jun
0 wk
28 May
16 Jun
0 wk
Strawflower
Xerochrysum bracteatum
Greenhouse
1 – 15 Apr
10 May
6-8 wk
27 May
21 Jun
0 wk
28 Jun
5 wk after
Purple-top vervain
Verbena bonariensis
6 Mar – 3 Apr
13 Apr
8-12 wk
29 May
8 Jun
0 wk
Cardoon
Cynara cardunculus
Season too short
4 Mar – 1 Apr
17 Mar
8-12 wk
27 May
0 wk
Regal-foxtail
Ptilotus nobilis
Greenhouse
10 Mar – 7 Apr
19 Apr
8-12 wk
2 Jun
14 Jun
1 wk after
Globe amaranth
Gomphrena globosa
Greenhouse
7 – 21 Apr
3 May
6-8 wk
2 Jun
14 Jun
1 wk after
Corn poppy
Papaver rhoeas
27 May
11 Jul
0 wk
28 May
1 Jul
0 wk
Snapdragon
Antirrhinum majus
4 Mar – 1 Apr
6 May
8-12 wk
27 May
1 Jul
0 wk
6 Jun
21 Jun
1 wk after
Flossflower
Ageratum houstonianum
Fleece
31 Mar – 14 Apr
3 May
8-10 wk
9 Jun
28 Jun
2 wk after
Sweet pea
Lathyrus odoratus
1 – 22 Apr
27 May
5-8 wk
27 May
1 Jul
0 wk
Stock
Matthiola incana
1 – 15 Apr
30 May
6-8 wk
27 May
11 Jul
0 wk
9 Jun
1 Jul
2 wk after
Wormwood
Artemisia absinthium
1 – 15 Apr
30 Apr
6-8 wk
27 May
11 Jun
0 wk
9 Jun
2 wk after
Mexican sunflower
Tithonia rotundifolia
Season too short
21 Apr – 5 May
12 May
4-6 wk
2 Jun
9 Jun
1 wk after
Garden pansy
Viola × wittrockiana
18 Mar – 1 Apr
16 May
8-10 wk
27 May
11 Jul
0 wk
6 Jun
1 Jul
1 wk after
Petunia
Petunia
Fleece
10 Mar – 7 Apr
23 Apr
8-12 wk
2 Jun
18 Jun
1 wk after
Sweet Scabious
Scabiosa atropurpurea
3 – 17 Apr
27 Apr
6-8 wk
29 May
8 Jun
0 wk
9 Jul
6 wk after
Common zinnia
Zinnia elegans
Fleece
21 Apr – 5 May
27 May
4-6 wk
2 Jun
24 Jun
1 wk after
Common morning glory
Ipomoea purpurea
Greenhouse
28 Apr – 12 May
3 Jun
3-5 wk
2 Jun
24 Jun
1 wk after
Garden cosmos
Cosmos bipinnatus
Fleece
21 Apr – 5 May
28 May
4-6 wk
2 Jun
25 Jun
1 wk after
21 Jun
4 wk after
Scarlet milkweed
Asclepias curassavica
Greenhouse
17 Mar – 14 Apr
19 May
8-12 wk
9 Jun
14 Jul
2 wk after
Bee balm
Monarda didyma
4 Mar – 1 Apr
16 Apr
8-12 wk
27 May
11 Jun
0 wk
21 Jun
4 wk after
Yarrow
Achillea millefolium
1 – 15 Apr
6-8 wk
27 May
0 wk
9 Jun
2 wk after
Safflower
Carthamus tinctorius
27 May
11 Jun
0 wk
28 May
1 Jun
0 wk
Iceland poppy
Papaver nudicaule
Season too short
1 – 15 Apr
20 May
6-8 wk
27 May
1 Jul
0 wk
11 May
21 Jun
2 wk before
Bishop's flower
Ammi majus
15 – 29 Apr
3 Jun
4-6 wk
27 May
1 Jul
0 wk
9 Jun
21 Jun
2 wk after
Drumsticks
Pycnosorus globosus
Season too short
10 – 24 Mar
27 Mar
10-12 wk
2 Jun
5 Jun
1 wk after
Sunflower
Helianthus annuus
Fleece
5 – 12 May
10 Jun
3-4 wk
2 Jun
1 Jul
1 wk after
9 Jun
21 Jun
2 wk after
China aster
Callistephus chinensis
14 – 28 Apr
15 May
6-8 wk
9 Jun
26 Jun
2 wk after
9 Jul
6 wk after
Annual phlox
Phlox drummondii
7 – 21 Apr
8 May
6-8 wk
2 Jun
19 Jun
1 wk after
9 Jul
6 wk after
Hollyhock
Alcea rosea
1 – 15 Apr
6-8 wk
27 May
0 wk
9 Jun
2 wk after
Alpine delphinium
Delphinium elatum
4 Mar – 1 Apr
16 Apr
8-12 wk
27 May
11 Jun
0 wk
21 Jun
4 wk after
African marigold
Tagetes erecta
14 – 28 Apr
8 May
6-8 wk
9 Jun
19 Jun
2 wk after
Black-eyed Susan
Rudbeckia hirta
3 – 17 Apr
5 May
6-8 wk
29 May
16 Jun
0 wk
9 Jul
6 wk after
Wood sage
Salvia nemorosa
18 Mar – 1 Apr
6 Apr
8-10 wk
27 May
1 Jun
0 wk
21 Jun
4 wk after
Black-eyed susan vine
Thunbergia alata
Greenhouse
24 Mar – 21 Apr
13 May
6-10 wk
2 Jun
24 Jun
1 wk after
California goldenpoppy
Eschscholzia californica
27 May
11 Jul
0 wk
28 May
1 Jul
0 wk
Painted tongue
Salpiglossis sinuata
Fleece
24 Mar – 7 Apr
3 May
8-10 wk
2 Jun
28 Jun
1 wk after
Water forget-me-not
Myosotis scorpioides
1 – 15 Apr
30 Apr
6-8 wk
27 May
11 Jun
0 wk
9 Jun
2 wk after