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Method
Rel. frost
Last spring frost (0°C) 17 May Normal year · 20 years of data
Frost-free season 130 days 17 May – 24 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)
29 Mar – 12 Apr
20 Jun
5-7 wk
17 May
25 Jul
0 wk
11 May
15 Jul
1 wk before
Broccoli
Brassica oleracea (Italica-gruppen)
5 – 19 Apr
2 Jul
4-6 wk
17 May
30 Jul
0 wk
11 May
20 Jul
1 wk before
Chili pepper
Capsicum annuum
Fleece
7 Mar – 4 Apr
12 Apr
8-12 wk
30 May
7 Jun
2 wk after
Curly Kale
Brassica oleracea (Curly Kale-gruppen)
29 Mar – 12 Apr
15 Jun
5-7 wk
17 May
20 Jul
0 wk
4 May
10 Jul
2 wk before
Garden cucumber
Cucumis sativus
21 – 28 May
6 Jun
3-4 wk
18 Jun
27 Jun
5 wk after
Florence Fennel
Foeniculum vulgare
14 – 21 May
4 Jun
4-5 wk
18 Jun
2 Jul
5 wk after
27 Jun
6 wk after
Butter bean
Phaseolus lunatus
Fleece
21 – 28 Jun
3-4 wk
19 Jul
9 wk after
Onion
Allium cepa (Cepa-gruppen)
22 Feb – 22 Mar
5 Apr
8-12 wk
17 May
31 May
0 wk
30 May
2 wk after
Onion (sets)
Allium cepa (Cepa-gruppen)
11 May
20 Jun
1 wk before
11 May
10 Jun
1 wk before
Maize
Zea mays
2 – 9 May
27 May
3-4 wk
30 May
17 Jun
2 wk after
Swiss Chard
Beta vulgaris (Flavescens-gruppen)
21 – 28 Apr
9 Jul
3-4 wk
19 May
30 Jul
0 wk
30 May
20 Jul
2 wk after
Carrot
Daucus carota subsp. sativus var. sativus
17 May
10 Jul
0 wk
4 May
30 Jun
2 wk before
Palm Kale
Brassica oleracea (Palm Kale-gruppen)
29 Mar – 12 Apr
15 Jun
5-7 wk
17 May
20 Jul
0 wk
4 May
10 Jul
2 wk before
Potato
Solanum tuberosum
10 – 24 Apr
12 Jun
4-6 wk
22 May
10 Jul
1 wk after
22 May
30 Jun
1 wk after
Ornamental Kale
Brassica oleracea (Ornamental-gruppen)
29 Mar – 12 Apr
25 Jun
5-7 wk
17 May
30 Jul
0 wk
11 May
20 Jul
1 wk before
Pumpkin
Cucurbita pepo
21 – 28 May
20 Jun
3-4 wk
18 Jun
11 Jul
5 wk after
Beetroot
Beta vulgaris (Conditiva-gruppen)
21 – 28 Apr
21 Jun
3-4 wk
19 May
12 Jul
0 wk
30 May
2 Jul
2 wk after
Red Cabbage
Brassica oleracea (Red Cabbage-gruppen)
5 – 19 Apr
27 Jun
4-6 wk
17 May
25 Jul
0 wk
Lettuce
Lactuca sativa
19 – 26 Apr
14 Jul
3-4 wk
17 May
4 Aug
0 wk
11 May
25 Jul
1 wk before
Savoy Cabbage
Brassica oleracea (Savoy Cabbage-gruppen)
5 – 19 Apr
27 Jun
4-6 wk
17 May
25 Jul
0 wk
Shallot (bulbs)
Allium cepa (Aggregatum-gruppen)
6 – 20 Apr
6 Jun
2-4 wk
4 May
20 Jun
2 wk before
4 May
10 Jun
2 wk before
Shallot (sets)
Allium cepa (Aggregatum-gruppen)
11 May
20 Jun
1 wk before
11 May
10 Jun
1 wk before
Spinach
Spinacia oleracea
19 – 26 Apr
29 Jul
3-4 wk
17 May
19 Aug
0 wk
27 Apr
9 Aug
3 wk before
Sweet potato
Ipomoea batatas
18 Jun – 2 Jul
4-6 wk
30 Jul
11 wk after
Garden tomato
Solanum lycopersicum
4 – 18 Apr
6 May
6-8 wk
30 May
17 Jun
2 wk after
Tomatillo
Physalis ixocarpa
Common Bean
Phaseolus vulgaris
2 – 16 May
22 Jun
2-4 wk
30 May
6 Jul
2 wk after
27 Jun
6 wk after
White Cabbage
Brassica oleracea (White Cabbage-gruppen)
5 – 19 Apr
27 Jun
4-6 wk
17 May
25 Jul
0 wk
Garden pea
Pisum sativum
19 – 26 Apr
29 Jun
3-4 wk
17 May
20 Jul
0 wk
11 May
10 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
29 May
4-6 wk
18 Jun
26 Jun
5 wk after
Lemon balm
Melissa officinalis
8 – 22 Mar
25 May
8-10 wk
17 May
20 Jul
0 wk
12 Jun
10 Jul
4 wk after
Dill
Anethum graveolens
11 May
30 Jul
1 wk before
Wild chives
Allium schoenoprasum
22 Mar – 5 Apr
8 Jun
6-8 wk
17 May
20 Jul
0 wk
11 May
10 Jul
1 wk before
Spearmint
Mentha spicata
22 Feb – 22 Mar
25 May
8-12 wk
17 May
20 Jul
0 wk
12 Jun
10 Jul
4 wk after
Coriander
Coriandrum sativum
17 May
19 Aug
0 wk
30 May
9 Aug
2 wk after
Garden sage
Salvia officinalis
10 – 24 Mar
10 May
8-10 wk
19 May
5 Jul
0 wk
Common thyme
Thymus vulgaris
8 – 22 Mar
15 May
8-10 wk
17 May
10 Jul
0 wk
Oregano
Origanum vulgare
22 Mar – 5 Apr
29 May
6-8 wk
17 May
10 Jul
0 wk
12 Jun
30 Jun
4 wk after
Parsley
Petroselinum crispum
22 Mar – 5 Apr
29 May
6-8 wk
17 May
10 Jul
0 wk
11 May
30 Jun
1 wk before
Rosemary
Salvia rosmarinus
10 Feb – 10 Mar
8 Apr
10-14 wk
19 May
17 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
21 – 28 May
5 Jun
3-4 wk
18 Jun
26 Jun
5 wk after
Cornflower
Centaurea cyanus
17 May
20 Jul
0 wk
11 May
10 Jul
1 wk before
Statice
Limonium sinuatum
21 Mar – 4 Apr
9 May
8-10 wk
30 May
4 Jul
2 wk after
Sweet William
Dianthus barbatus
22 Mar – 5 Apr
6-8 wk
17 May
0 wk
22 May
1 wk after
Snow-on-the-mountain
Euphorbia marginata
4 – 18 Apr
23 May
6-8 wk
30 May
4 Jul
2 wk after
30 Jul
11 wk after
Pinnate dahlia
Dahlia × pinnata
2 – 16 Apr
29 May
6-8 wk
28 May
10 Jul
2 wk after
Pinnate dahlia (tubers)
Dahlia × pinnata
17 Apr – 15 May
12 Jun
4-8 wk
12 Jun
10 Jul
4 wk after
12 Jun
30 Jun
4 wk after
Foxglove
Digitalis purpurea
8 – 22 Mar
8-10 wk
17 May
0 wk
30 May
2 wk after
Busy lizzie
Impatiens walleriana
26 Mar – 23 Apr
1 Jul
8-12 wk
18 Jun
26 Aug
5 wk after
Creeping zinnia
Sanvitalia procumbens
4 – 18 Apr
2 Jun
6-8 wk
30 May
14 Jul
2 wk after
Hyacinth bean
Dolichos lablab
Greenhouse
18 Apr – 2 May
14 May
4-6 wk
30 May
11 Jun
2 wk after
Chinese lantern
Physalis alkekengi
10 – 24 Mar
25 Apr
8-10 wk
19 May
20 Jun
0 wk
Love in a mist
Nigella damascena
17 May
5 Jul
0 wk
11 May
25 Jun
1 wk before
Strawflower
Xerochrysum bracteatum
4 – 18 Apr
13 May
6-8 wk
30 May
24 Jun
2 wk after
30 Jul
11 wk after
Purple-top vervain
Verbena bonariensis
24 Feb – 24 Mar
25 Apr
8-12 wk
19 May
20 Jun
0 wk
Cardoon
Cynara cardunculus
7 Mar – 4 Apr
26 Mar
8-12 wk
30 May
2 wk after
Regal-foxtail
Ptilotus nobilis
26 Mar – 23 Apr
21 Apr
8-12 wk
18 Jun
5 wk after
Globe amaranth
Gomphrena globosa
23 Apr – 7 May
5 May
6-8 wk
18 Jun
5 wk after
Corn poppy
Papaver rhoeas
17 May
20 Jul
0 wk
11 May
10 Jul
1 wk before
Snapdragon
Antirrhinum majus
22 Feb – 22 Mar
15 May
8-12 wk
17 May
10 Jul
0 wk
22 May
30 Jun
1 wk after
Flossflower
Ageratum houstonianum
9 – 23 Apr
19 May
8-10 wk
18 Jun
14 Jul
5 wk after
Sweet pea
Lathyrus odoratus
22 Mar – 12 Apr
5 Jun
5-8 wk
17 May
10 Jul
0 wk
Stock
Matthiola incana
22 Mar – 5 Apr
8 Jun
6-8 wk
17 May
20 Jul
0 wk
30 May
10 Jul
2 wk after
Wormwood
Artemisia absinthium
22 Mar – 5 Apr
9 May
6-8 wk
17 May
20 Jun
0 wk
30 May
10 Jun
2 wk after
Mexican sunflower
Tithonia rotundifolia
7 – 21 May
14 May
4-6 wk
18 Jun
5 wk after
Garden pansy
Viola × wittrockiana
8 – 22 Mar
25 May
8-10 wk
17 May
20 Jul
0 wk
22 May
10 Jul
1 wk after
Petunia
Petunia
7 Mar – 4 Apr
9 May
8-12 wk
30 May
4 Jul
2 wk after
Sweet Scabious
Scabiosa atropurpurea
24 Mar – 7 Apr
9 May
6-8 wk
19 May
20 Jun
0 wk
27 Jun
6 wk after
Common zinnia
Zinnia elegans
18 Apr – 2 May
13 Jun
4-6 wk
30 May
11 Jul
2 wk after
Common morning glory
Ipomoea purpurea
14 – 28 May
5 Jun
3-5 wk
18 Jun
26 Jun
5 wk after
Garden cosmos
Cosmos bipinnatus
18 Apr – 2 May
12 Jun
4-6 wk
30 May
10 Jul
2 wk after
27 Jun
30 Jun
6 wk after
Scarlet milkweed
Asclepias curassavica
16 Apr – 14 May
21 May
8-12 wk
9 Jul
16 Jul
8 wk after
Bee balm
Monarda didyma
22 Feb – 22 Mar
25 Apr
8-12 wk
17 May
20 Jun
0 wk
12 Jun
4 wk after
Yarrow
Achillea millefolium
22 Mar – 5 Apr
9 Apr
6-8 wk
17 May
21 May
0 wk
30 May
2 wk after
Safflower
Carthamus tinctorius
17 May
20 Jun
0 wk
11 May
10 Jun
1 wk before
Iceland poppy
Papaver nudicaule
Season too short
22 Mar – 5 Apr
29 May
6-8 wk
17 May
10 Jul
0 wk
1 Apr
30 Jun
7 wk before
Bishop's flower
Ammi majus
5 – 19 Apr
12 Jun
4-6 wk
17 May
10 Jul
0 wk
30 May
30 Jun
2 wk after
Drumsticks
Pycnosorus globosus
26 Mar – 9 Apr
2 Apr
10-12 wk
18 Jun
5 wk after
Sunflower
Helianthus annuus
2 – 9 May
16 Jun
3-4 wk
30 May
7 Jul
2 wk after
12 Jun
27 Jun
4 wk after
China aster
Callistephus chinensis
4 – 18 Apr
5 Jun
6-8 wk
30 May
17 Jul
2 wk after
27 Jun
7 Jul
6 wk after
Annual phlox
Phlox drummondii
28 Mar – 11 Apr
2 Jun
6-8 wk
23 May
14 Jul
1 wk after
27 Jun
4 Jul
6 wk after
Hollyhock
Alcea rosea
22 Mar – 5 Apr
6-8 wk
17 May
0 wk
30 May
2 wk after
Alpine delphinium
Delphinium elatum
22 Feb – 22 Mar
25 Apr
8-12 wk
17 May
20 Jun
0 wk
12 Jun
4 wk after
African marigold
Tagetes erecta
4 – 18 Apr
2 Jun
6-8 wk
30 May
14 Jul
2 wk after
Black-eyed Susan
Rudbeckia hirta
24 Mar – 7 Apr
26 May
6-8 wk
19 May
7 Jul
0 wk
27 Jun
27 Jun
6 wk after
Wood sage
Salvia nemorosa
8 – 22 Mar
15 Apr
8-10 wk
17 May
10 Jun
0 wk
12 Jun
4 wk after
Black-eyed susan vine
Thunbergia alata
9 Apr – 7 May
15 May
6-10 wk
18 Jun
26 Jun
5 wk after
California goldenpoppy
Eschscholzia californica
17 May
20 Jul
0 wk
11 May
10 Jul
1 wk before
Painted tongue
Salpiglossis sinuata
21 Mar – 4 Apr
7 May
8-10 wk
30 May
2 Jul
2 wk after
Water forget-me-not
Myosotis scorpioides
22 Mar – 5 Apr
9 May
6-8 wk
17 May
20 Jun
0 wk
30 May
10 Jun
2 wk after