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Method
Rel. frost
Last spring frost (0°C) 13 May Normal year · 20 years of data
Frost-free season 138 days 13 May – 28 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)
25 Mar – 8 Apr
15 Jun
5-7 wk
13 May
20 Jul
0 wk
17 May
10 Jul
1 wk after
Broccoli
Brassica oleracea (Italica-gruppen)
1 – 15 Apr
27 Jun
4-6 wk
13 May
25 Jul
0 wk
17 May
15 Jul
1 wk after
Chili pepper
Capsicum annuum
Fleece
10 Mar – 7 Apr
1 Apr
8-12 wk
2 Jun
3 wk after
Curly Kale
Brassica oleracea (Curly Kale-gruppen)
25 Mar – 8 Apr
10 Jun
5-7 wk
13 May
15 Jul
0 wk
13 May
5 Jul
0 wk
Garden cucumber
Cucumis sativus
21 – 28 May
26 May
3-4 wk
18 Jun
5 wk after
Florence Fennel
Foeniculum vulgare
14 – 21 May
1 Jun
4-5 wk
18 Jun
29 Jun
5 wk after
1 Jul
7 wk after
Butter bean
Phaseolus lunatus
Season too short
26 May – 2 Jun
3-4 wk
23 Jun
6 wk after
Onion
Allium cepa (Cepa-gruppen)
18 Feb – 18 Mar
31 Mar
8-12 wk
13 May
26 May
0 wk
3 Jun
3 wk after
Onion (sets)
Allium cepa (Cepa-gruppen)
17 May
15 Jun
1 wk after
17 May
5 Jun
1 wk after
Maize
Zea mays
5 – 12 May
16 May
3-4 wk
2 Jun
6 Jun
3 wk after
Swiss Chard
Beta vulgaris (Flavescens-gruppen)
20 – 27 Apr
4 Jul
3-4 wk
18 May
25 Jul
1 wk after
3 Jun
15 Jul
3 wk after
Carrot
Daucus carota subsp. sativus var. sativus
13 May
5 Jul
0 wk
13 May
25 Jun
0 wk
Palm Kale
Brassica oleracea (Palm Kale-gruppen)
25 Mar – 8 Apr
10 Jun
5-7 wk
13 May
15 Jul
0 wk
13 May
5 Jul
0 wk
Potato
Solanum tuberosum
17 Apr – 1 May
5 Jun
4-6 wk
29 May
3 Jul
2 wk after
29 May
23 Jun
2 wk after
Ornamental Kale
Brassica oleracea (Ornamental-gruppen)
25 Mar – 8 Apr
20 Jun
5-7 wk
13 May
25 Jul
0 wk
17 May
15 Jul
1 wk after
Pumpkin
Cucurbita pepo
21 – 28 May
17 Jun
3-4 wk
18 Jun
8 Jul
5 wk after
Beetroot
Beta vulgaris (Conditiva-gruppen)
20 – 27 Apr
16 Jun
3-4 wk
18 May
7 Jul
1 wk after
3 Jun
27 Jun
3 wk after
Red Cabbage
Brassica oleracea (Red Cabbage-gruppen)
1 – 15 Apr
22 Jun
4-6 wk
13 May
20 Jul
0 wk
Lettuce
Lactuca sativa
15 – 22 Apr
9 Jul
3-4 wk
13 May
30 Jul
0 wk
17 May
20 Jul
1 wk after
Savoy Cabbage
Brassica oleracea (Savoy Cabbage-gruppen)
1 – 15 Apr
22 Jun
4-6 wk
13 May
20 Jul
0 wk
Shallot (bulbs)
Allium cepa (Aggregatum-gruppen)
15 – 29 Apr
1 Jun
2-4 wk
13 May
15 Jun
0 wk
13 May
5 Jun
0 wk
Shallot (sets)
Allium cepa (Aggregatum-gruppen)
17 May
15 Jun
1 wk after
17 May
5 Jun
1 wk after
Spinach
Spinacia oleracea
15 – 22 Apr
24 Jul
3-4 wk
13 May
14 Aug
0 wk
9 May
4 Aug
1 wk before
Sweet potato
Ipomoea batatas
14 – 28 Jun
4-6 wk
26 Jul
11 wk after
Garden tomato
Solanum lycopersicum
7 – 21 Apr
25 Apr
6-8 wk
2 Jun
6 Jun
3 wk after
Tomatillo
Physalis ixocarpa
Common Bean
Phaseolus vulgaris
5 – 19 May
19 Jun
2-4 wk
2 Jun
3 Jul
3 wk after
1 Jul
7 wk after
White Cabbage
Brassica oleracea (White Cabbage-gruppen)
1 – 15 Apr
22 Jun
4-6 wk
13 May
20 Jul
0 wk
Garden pea
Pisum sativum
15 – 22 Apr
24 Jun
3-4 wk
13 May
15 Jul
0 wk
17 May
5 Jul
1 wk after

Herbs

Plant Sow indoors Transplant Direct sow
Earliest Latest Growing time Earliest Latest Rel. frost Earliest Latest Rel. frost
Basil
Ocimum basilicum
7 – 21 May
26 May
4-6 wk
18 Jun
23 Jun
5 wk after
Lemon balm
Melissa officinalis
4 – 18 Mar
20 May
8-10 wk
13 May
15 Jul
0 wk
17 Jun
5 Jul
5 wk after
Dill
Anethum graveolens
17 May
25 Jul
1 wk after
Wild chives
Allium schoenoprasum
18 Mar – 1 Apr
3 Jun
6-8 wk
13 May
15 Jul
0 wk
17 May
5 Jul
1 wk after
Spearmint
Mentha spicata
18 Feb – 18 Mar
20 May
8-12 wk
13 May
15 Jul
0 wk
17 Jun
5 Jul
5 wk after
Coriander
Coriandrum sativum
13 May
14 Aug
0 wk
3 Jun
4 Aug
3 wk after
Garden sage
Salvia officinalis
9 – 23 Mar
5 May
8-10 wk
18 May
30 Jun
1 wk after
Common thyme
Thymus vulgaris
4 – 18 Mar
10 May
8-10 wk
13 May
5 Jul
0 wk
Oregano
Origanum vulgare
18 Mar – 1 Apr
24 May
6-8 wk
13 May
5 Jul
0 wk
17 Jun
25 Jun
5 wk after
Parsley
Petroselinum crispum
18 Mar – 1 Apr
24 May
6-8 wk
13 May
5 Jul
0 wk
17 May
25 Jun
1 wk after
Rosemary
Salvia rosmarinus
9 Feb – 9 Mar
6 Apr
10-14 wk
18 May
15 Jun
1 wk after

Annual flowers

Plant Sow indoors Transplant Direct sow
Earliest Latest Growing time Earliest Latest Rel. frost Earliest Latest Rel. frost
Morning glory
Ipomoea tricolor
21 – 28 May
2 Jun
3-4 wk
18 Jun
23 Jun
5 wk after
Cornflower
Centaurea cyanus
13 May
15 Jul
0 wk
17 May
5 Jul
1 wk after
Statice
Limonium sinuatum
24 Mar – 7 Apr
4 May
8-10 wk
2 Jun
29 Jun
3 wk after
Sweet William
Dianthus barbatus
18 Mar – 1 Apr
6-8 wk
13 May
0 wk
29 May
2 wk after
Snow-on-the-mountain
Euphorbia marginata
7 – 21 Apr
18 May
6-8 wk
2 Jun
29 Jun
3 wk after
26 Jul
11 wk after
Pinnate dahlia
Dahlia × pinnata
31 Mar – 14 Apr
18 May
6-8 wk
26 May
29 Jun
2 wk after
Pinnate dahlia (tubers)
Dahlia × pinnata
22 Apr – 20 May
1 Jun
4-8 wk
17 Jun
29 Jun
5 wk after
17 Jun
19 Jun
5 wk after
Foxglove
Digitalis purpurea
4 – 18 Mar
8-10 wk
13 May
0 wk
3 Jun
3 wk after
Busy lizzie
Impatiens walleriana
26 Mar – 23 Apr
24 Jun
8-12 wk
18 Jun
19 Aug
5 wk after
Creeping zinnia
Sanvitalia procumbens
7 – 21 Apr
28 May
6-8 wk
2 Jun
9 Jul
3 wk after
Hyacinth bean
Dolichos lablab
Greenhouse
21 Apr – 5 May
7 May
4-6 wk
2 Jun
4 Jun
3 wk after
Chinese lantern
Physalis alkekengi
9 – 23 Mar
20 Apr
8-10 wk
18 May
15 Jun
1 wk after
Love in a mist
Nigella damascena
13 May
30 Jun
0 wk
17 May
20 Jun
1 wk after
Strawflower
Xerochrysum bracteatum
7 – 21 Apr
8 May
6-8 wk
2 Jun
19 Jun
3 wk after
26 Jul
11 wk after
Purple-top vervain
Verbena bonariensis
23 Feb – 23 Mar
20 Apr
8-12 wk
18 May
15 Jun
1 wk after
Cardoon
Cynara cardunculus
Fleece
28 Feb – 28 Mar
21 Mar
8-12 wk
23 May
1 wk after
Regal-foxtail
Ptilotus nobilis
26 Mar – 23 Apr
18 Apr
8-12 wk
18 Jun
5 wk after
Globe amaranth
Gomphrena globosa
23 Apr – 7 May
2 May
6-8 wk
18 Jun
5 wk after
Corn poppy
Papaver rhoeas
13 May
15 Jul
0 wk
17 May
5 Jul
1 wk after
Snapdragon
Antirrhinum majus
18 Feb – 18 Mar
10 May
8-12 wk
13 May
5 Jul
0 wk
29 May
25 Jun
2 wk after
Flossflower
Ageratum houstonianum
9 – 23 Apr
14 May
8-10 wk
18 Jun
9 Jul
5 wk after
Sweet pea
Lathyrus odoratus
18 Mar – 8 Apr
31 May
5-8 wk
13 May
5 Jul
0 wk
Stock
Matthiola incana
18 Mar – 1 Apr
3 Jun
6-8 wk
13 May
15 Jul
0 wk
3 Jun
5 Jul
3 wk after
Wormwood
Artemisia absinthium
18 Mar – 1 Apr
4 May
6-8 wk
13 May
15 Jun
0 wk
3 Jun
5 Jun
3 wk after
Mexican sunflower
Tithonia rotundifolia
7 – 21 May
11 May
4-6 wk
18 Jun
5 wk after
Garden pansy
Viola × wittrockiana
4 – 18 Mar
20 May
8-10 wk
13 May
15 Jul
0 wk
29 May
5 Jul
2 wk after
Petunia
Petunia
10 Mar – 7 Apr
4 May
8-12 wk
2 Jun
29 Jun
3 wk after
Sweet Scabious
Scabiosa atropurpurea
23 Mar – 6 Apr
4 May
6-8 wk
18 May
15 Jun
1 wk after
1 Jul
7 wk after
Common zinnia
Zinnia elegans
21 Apr – 5 May
6 Jun
4-6 wk
2 Jun
4 Jul
3 wk after
Common morning glory
Ipomoea purpurea
14 – 28 May
2 Jun
3-5 wk
18 Jun
23 Jun
5 wk after
Garden cosmos
Cosmos bipinnatus
21 Apr – 5 May
1 Jun
4-6 wk
2 Jun
29 Jun
3 wk after
1 Jul
7 wk after
Scarlet milkweed
Asclepias curassavica
2 – 30 Apr
18 May
8-12 wk
25 Jun
13 Jul
6 wk after
Bee balm
Monarda didyma
18 Feb – 18 Mar
20 Apr
8-12 wk
13 May
15 Jun
0 wk
17 Jun
5 wk after
Yarrow
Achillea millefolium
18 Mar – 1 Apr
4 Apr
6-8 wk
13 May
16 May
0 wk
3 Jun
3 wk after
Safflower
Carthamus tinctorius
13 May
15 Jun
0 wk
17 May
5 Jun
1 wk after
Iceland poppy
Papaver nudicaule
Season too short
18 Mar – 1 Apr
24 May
6-8 wk
13 May
5 Jul
0 wk
25 Apr
25 Jun
3 wk before
Bishop's flower
Ammi majus
1 – 15 Apr
7 Jun
4-6 wk
13 May
5 Jul
0 wk
3 Jun
25 Jun
3 wk after
Drumsticks
Pycnosorus globosus
26 Mar – 9 Apr
26 Mar
10-12 wk
18 Jun
5 wk after
Sunflower
Helianthus annuus
5 – 12 May
14 Jun
3-4 wk
2 Jun
5 Jul
3 wk after
17 Jun
25 Jun
5 wk after
China aster
Callistephus chinensis
7 – 21 Apr
3 Jun
6-8 wk
2 Jun
15 Jul
3 wk after
1 Jul
5 Jul
7 wk after
Annual phlox
Phlox drummondii
28 Mar – 11 Apr
28 May
6-8 wk
23 May
9 Jul
1 wk after
1 Jul
7 wk after
Hollyhock
Alcea rosea
18 Mar – 1 Apr
6-8 wk
13 May
0 wk
3 Jun
3 wk after
Alpine delphinium
Delphinium elatum
18 Feb – 18 Mar
20 Apr
8-12 wk
13 May
15 Jun
0 wk
17 Jun
5 wk after
African marigold
Tagetes erecta
7 – 21 Apr
28 May
6-8 wk
2 Jun
9 Jul
3 wk after
Black-eyed Susan
Rudbeckia hirta
23 Mar – 6 Apr
24 May
6-8 wk
18 May
5 Jul
1 wk after
1 Jul
7 wk after
Wood sage
Salvia nemorosa
4 – 18 Mar
10 Apr
8-10 wk
13 May
5 Jun
0 wk
17 Jun
5 wk after
Black-eyed susan vine
Thunbergia alata
9 Apr – 7 May
12 May
6-10 wk
18 Jun
23 Jun
5 wk after
California goldenpoppy
Eschscholzia californica
13 May
15 Jul
0 wk
17 May
5 Jul
1 wk after
Painted tongue
Salpiglossis sinuata
24 Mar – 7 Apr
4 May
8-10 wk
2 Jun
29 Jun
3 wk after
Water forget-me-not
Myosotis scorpioides
18 Mar – 1 Apr
4 May
6-8 wk
13 May
15 Jun
0 wk
3 Jun
5 Jun
3 wk after