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Method
Rel. frost
Last spring frost (0°C) 13 May Normal year · 20 years of data
Frost-free season 139 days 13 May – 29 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
17 Jun
5-7 wk
13 May
22 Jul
0 wk
6 May
12 Jul
1 wk before
Broccoli
Brassica oleracea (Italica-gruppen)
1 – 15 Apr
29 Jun
4-6 wk
13 May
27 Jul
0 wk
6 May
17 Jul
1 wk before
Chili pepper
Capsicum annuum
Fleece
10 Mar – 7 Apr
28 Mar
8-12 wk
2 Jun
3 wk after
Curly Kale
Brassica oleracea (Curly Kale-gruppen)
25 Mar – 8 Apr
12 Jun
5-7 wk
13 May
17 Jul
0 wk
1 May
7 Jul
2 wk before
Garden cucumber
Cucumis sativus
21 – 28 May
22 May
3-4 wk
18 Jun
5 wk after
Florence Fennel
Foeniculum vulgare
14 – 21 May
3 Jun
4-5 wk
18 Jun
1 Jul
5 wk after
18 Jun
21 Jun
5 wk after
Butter bean
Phaseolus lunatus
Greenhouse
26 May – 2 Jun
3-4 wk
23 Jun
6 wk after
Onion
Allium cepa (Cepa-gruppen)
18 Feb – 18 Mar
2 Apr
8-12 wk
13 May
28 May
0 wk
23 May
1 wk after
Onion (sets)
Allium cepa (Cepa-gruppen)
6 May
17 Jun
1 wk before
6 May
7 Jun
1 wk before
Maize
Zea mays
5 – 12 May
12 May
3-4 wk
2 Jun
2 Jun
3 wk after
Swiss Chard
Beta vulgaris (Flavescens-gruppen)
20 – 27 Apr
6 Jul
3-4 wk
18 May
27 Jul
1 wk after
23 May
17 Jul
1 wk after
Carrot
Daucus carota subsp. sativus var. sativus
13 May
7 Jul
0 wk
1 May
27 Jun
2 wk before
Palm Kale
Brassica oleracea (Palm Kale-gruppen)
25 Mar – 8 Apr
12 Jun
5-7 wk
13 May
17 Jul
0 wk
1 May
7 Jul
2 wk before
Potato
Solanum tuberosum
6 – 20 Apr
30 May
4-6 wk
18 May
27 Jun
1 wk after
18 May
17 Jun
1 wk after
Ornamental Kale
Brassica oleracea (Ornamental-gruppen)
25 Mar – 8 Apr
22 Jun
5-7 wk
13 May
27 Jul
0 wk
6 May
17 Jul
1 wk before
Pumpkin
Cucurbita pepo
21 – 28 May
15 Jun
3-4 wk
18 Jun
6 Jul
5 wk after
Beetroot
Beta vulgaris (Conditiva-gruppen)
20 – 27 Apr
14 Jun
3-4 wk
18 May
5 Jul
1 wk after
23 May
25 Jun
1 wk after
Red Cabbage
Brassica oleracea (Red Cabbage-gruppen)
1 – 15 Apr
24 Jun
4-6 wk
13 May
22 Jul
0 wk
Lettuce
Lactuca sativa
15 – 22 Apr
11 Jul
3-4 wk
13 May
1 Aug
0 wk
6 May
22 Jul
1 wk before
Savoy Cabbage
Brassica oleracea (Savoy Cabbage-gruppen)
1 – 15 Apr
24 Jun
4-6 wk
13 May
22 Jul
0 wk
Shallot (bulbs)
Allium cepa (Aggregatum-gruppen)
3 – 17 Apr
3 Jun
2-4 wk
1 May
17 Jun
2 wk before
1 May
7 Jun
2 wk before
Shallot (sets)
Allium cepa (Aggregatum-gruppen)
6 May
17 Jun
1 wk before
6 May
7 Jun
1 wk before
Spinach
Spinacia oleracea
15 – 22 Apr
26 Jul
3-4 wk
13 May
16 Aug
0 wk
25 Apr
6 Aug
3 wk before
Sweet potato
Ipomoea batatas
9 – 23 Jun
4-6 wk
21 Jul
10 wk after
Garden tomato
Solanum lycopersicum
7 – 21 Apr
21 Apr
6-8 wk
2 Jun
2 Jun
3 wk after
Tomatillo
Physalis ixocarpa
Common Bean
Phaseolus vulgaris
5 – 19 May
17 Jun
2-4 wk
2 Jun
1 Jul
3 wk after
18 Jun
21 Jun
5 wk after
White Cabbage
Brassica oleracea (White Cabbage-gruppen)
1 – 15 Apr
24 Jun
4-6 wk
13 May
22 Jul
0 wk
Garden pea
Pisum sativum
15 – 22 Apr
26 Jun
3-4 wk
13 May
17 Jul
0 wk
6 May
7 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
7 – 21 May
24 May
4-6 wk
18 Jun
21 Jun
5 wk after
Lemon balm
Melissa officinalis
4 – 18 Mar
22 May
8-10 wk
13 May
17 Jul
0 wk
3 Jun
7 Jul
3 wk after
Dill
Anethum graveolens
6 May
27 Jul
1 wk before
Wild chives
Allium schoenoprasum
18 Mar – 1 Apr
5 Jun
6-8 wk
13 May
17 Jul
0 wk
6 May
7 Jul
1 wk before
Spearmint
Mentha spicata
18 Feb – 18 Mar
22 May
8-12 wk
13 May
17 Jul
0 wk
3 Jun
7 Jul
3 wk after
Coriander
Coriandrum sativum
13 May
16 Aug
0 wk
23 May
6 Aug
1 wk after
Garden sage
Salvia officinalis
9 – 23 Mar
7 May
8-10 wk
18 May
2 Jul
1 wk after
Common thyme
Thymus vulgaris
4 – 18 Mar
12 May
8-10 wk
13 May
7 Jul
0 wk
Oregano
Origanum vulgare
18 Mar – 1 Apr
26 May
6-8 wk
13 May
7 Jul
0 wk
3 Jun
27 Jun
3 wk after
Parsley
Petroselinum crispum
18 Mar – 1 Apr
26 May
6-8 wk
13 May
7 Jul
0 wk
6 May
27 Jun
1 wk before
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
31 May
3-4 wk
18 Jun
21 Jun
5 wk after
Cornflower
Centaurea cyanus
13 May
17 Jul
0 wk
6 May
7 Jul
1 wk before
Statice
Limonium sinuatum
24 Mar – 7 Apr
29 Apr
8-10 wk
2 Jun
24 Jun
3 wk after
Sweet William
Dianthus barbatus
18 Mar – 1 Apr
6-8 wk
13 May
0 wk
18 May
1 wk after
Snow-on-the-mountain
Euphorbia marginata
7 – 21 Apr
13 May
6-8 wk
2 Jun
24 Jun
3 wk after
21 Jul
10 wk after
Pinnate dahlia
Dahlia × pinnata
31 Mar – 14 Apr
20 May
6-8 wk
26 May
1 Jul
2 wk after
Pinnate dahlia (tubers)
Dahlia × pinnata
8 Apr – 6 May
3 Jun
4-8 wk
3 Jun
1 Jul
3 wk after
3 Jun
21 Jun
3 wk after
Foxglove
Digitalis purpurea
4 – 18 Mar
8-10 wk
13 May
0 wk
23 May
1 wk after
Busy lizzie
Impatiens walleriana
26 Mar – 23 Apr
22 Jun
8-12 wk
18 Jun
17 Aug
5 wk after
Creeping zinnia
Sanvitalia procumbens
7 – 21 Apr
23 May
6-8 wk
2 Jun
4 Jul
3 wk after
Hyacinth bean
Dolichos lablab
Greenhouse
21 Apr – 5 May
5 May
4-6 wk
2 Jun
2 Jun
3 wk after
Chinese lantern
Physalis alkekengi
9 – 23 Mar
22 Apr
8-10 wk
18 May
17 Jun
1 wk after
Love in a mist
Nigella damascena
13 May
2 Jul
0 wk
6 May
22 Jun
1 wk before
Strawflower
Xerochrysum bracteatum
7 – 21 Apr
3 May
6-8 wk
2 Jun
14 Jun
3 wk after
21 Jul
10 wk after
Purple-top vervain
Verbena bonariensis
23 Feb – 23 Mar
22 Apr
8-12 wk
18 May
17 Jun
1 wk after
Cardoon
Cynara cardunculus
10 Mar – 7 Apr
23 Mar
8-12 wk
2 Jun
3 wk after
Regal-foxtail
Ptilotus nobilis
26 Mar – 23 Apr
16 Apr
8-12 wk
18 Jun
5 wk after
Globe amaranth
Gomphrena globosa
23 Apr – 7 May
30 Apr
6-8 wk
18 Jun
5 wk after
Corn poppy
Papaver rhoeas
13 May
17 Jul
0 wk
6 May
7 Jul
1 wk before
Snapdragon
Antirrhinum majus
18 Feb – 18 Mar
12 May
8-12 wk
13 May
7 Jul
0 wk
18 May
27 Jun
1 wk after
Flossflower
Ageratum houstonianum
9 – 23 Apr
9 May
8-10 wk
18 Jun
4 Jul
5 wk after
Sweet pea
Lathyrus odoratus
18 Mar – 8 Apr
2 Jun
5-8 wk
13 May
7 Jul
0 wk
Stock
Matthiola incana
18 Mar – 1 Apr
5 Jun
6-8 wk
13 May
17 Jul
0 wk
23 May
7 Jul
1 wk after
Wormwood
Artemisia absinthium
18 Mar – 1 Apr
6 May
6-8 wk
13 May
17 Jun
0 wk
23 May
7 Jun
1 wk after
Mexican sunflower
Tithonia rotundifolia
7 – 21 May
9 May
4-6 wk
18 Jun
5 wk after
Garden pansy
Viola × wittrockiana
4 – 18 Mar
22 May
8-10 wk
13 May
17 Jul
0 wk
18 May
7 Jul
1 wk after
Petunia
Petunia
10 Mar – 7 Apr
29 Apr
8-12 wk
2 Jun
24 Jun
3 wk after
Sweet Scabious
Scabiosa atropurpurea
23 Mar – 6 Apr
6 May
6-8 wk
18 May
17 Jun
1 wk after
18 Jun
5 wk after
Common zinnia
Zinnia elegans
21 Apr – 5 May
4 Jun
4-6 wk
2 Jun
2 Jul
3 wk after
Common morning glory
Ipomoea purpurea
14 – 28 May
31 May
3-5 wk
18 Jun
21 Jun
5 wk after
Garden cosmos
Cosmos bipinnatus
21 Apr – 5 May
3 Jun
4-6 wk
2 Jun
1 Jul
3 wk after
18 Jun
21 Jun
5 wk after
Scarlet milkweed
Asclepias curassavica
2 – 30 Apr
16 May
8-12 wk
25 Jun
11 Jul
6 wk after
Bee balm
Monarda didyma
18 Feb – 18 Mar
22 Apr
8-12 wk
13 May
17 Jun
0 wk
3 Jun
7 Jun
3 wk after
Yarrow
Achillea millefolium
18 Mar – 1 Apr
6 Apr
6-8 wk
13 May
18 May
0 wk
23 May
1 wk after
Safflower
Carthamus tinctorius
13 May
17 Jun
0 wk
6 May
7 Jun
1 wk before
Iceland poppy
Papaver nudicaule
Season too short
18 Mar – 1 Apr
26 May
6-8 wk
13 May
7 Jul
0 wk
4 Apr
27 Jun
6 wk before
Bishop's flower
Ammi majus
1 – 15 Apr
9 Jun
4-6 wk
13 May
7 Jul
0 wk
23 May
27 Jun
1 wk after
Drumsticks
Pycnosorus globosus
Fleece
10 – 24 Mar
2 Apr
10-12 wk
2 Jun
11 Jun
3 wk after
Sunflower
Helianthus annuus
5 – 12 May
14 Jun
3-4 wk
2 Jun
5 Jul
3 wk after
3 Jun
25 Jun
3 wk after
China aster
Callistephus chinensis
7 – 21 Apr
3 Jun
6-8 wk
2 Jun
15 Jul
3 wk after
18 Jun
5 Jul
5 wk after
Annual phlox
Phlox drummondii
28 Mar – 11 Apr
23 May
6-8 wk
23 May
4 Jul
1 wk after
18 Jun
24 Jun
5 wk after
Hollyhock
Alcea rosea
18 Mar – 1 Apr
6-8 wk
13 May
0 wk
23 May
1 wk after
Alpine delphinium
Delphinium elatum
18 Feb – 18 Mar
22 Apr
8-12 wk
13 May
17 Jun
0 wk
3 Jun
7 Jun
3 wk after
African marigold
Tagetes erecta
7 – 21 Apr
23 May
6-8 wk
2 Jun
4 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
18 Jun
25 Jun
5 wk after
Wood sage
Salvia nemorosa
4 – 18 Mar
12 Apr
8-10 wk
13 May
7 Jun
0 wk
3 Jun
3 wk after
Black-eyed susan vine
Thunbergia alata
9 Apr – 7 May
10 May
6-10 wk
18 Jun
21 Jun
5 wk after
California goldenpoppy
Eschscholzia californica
13 May
17 Jul
0 wk
6 May
7 Jul
1 wk before
Painted tongue
Salpiglossis sinuata
24 Mar – 7 Apr
6 May
8-10 wk
2 Jun
1 Jul
3 wk after
Water forget-me-not
Myosotis scorpioides
18 Mar – 1 Apr
6 May
6-8 wk
13 May
17 Jun
0 wk
23 May
7 Jun
1 wk after