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Method
Rel. frost
Last spring frost (0°C) 18 May Normal year · 20 years of data
Frost-free season 122 days 18 May – 17 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)
30 Mar – 13 Apr
12 Jun
5-7 wk
18 May
17 Jul
0 wk
19 May
7 Jul
0 wk
Broccoli
Brassica oleracea (Italica-gruppen)
6 – 20 Apr
24 Jun
4-6 wk
18 May
22 Jul
0 wk
19 May
12 Jul
0 wk
Chili pepper
Capsicum annuum
Greenhouse
1 – 29 Mar
7 Apr
8-12 wk
24 May
2 Jun
1 wk after
Curly Kale
Brassica oleracea (Curly Kale-gruppen)
30 Mar – 13 Apr
7 Jun
5-7 wk
18 May
12 Jul
0 wk
18 May
2 Jul
0 wk
Garden cucumber
Cucumis sativus
22 – 29 May
3-4 wk
19 Jun
5 wk after
Florence Fennel
Foeniculum vulgare
15 – 22 May
17 May
4-5 wk
19 Jun
5 wk after
30 Jun
6 wk after
Butter bean
Phaseolus lunatus
Season too short
29 May – 5 Jun
3-4 wk
26 Jun
6 wk after
Onion
Allium cepa (Cepa-gruppen)
23 Feb – 23 Mar
26 Mar
8-12 wk
18 May
21 May
0 wk
31 May
2 wk after
Onion (sets)
Allium cepa (Cepa-gruppen)
19 May
10 Jun
0 wk
19 May
31 May
0 wk
Maize
Zea mays
Fleece
26 Apr – 3 May
22 May
3-4 wk
24 May
12 Jun
1 wk after
Swiss Chard
Beta vulgaris (Flavescens-gruppen)
22 – 29 Apr
27 Jun
3-4 wk
20 May
18 Jul
0 wk
31 May
8 Jul
2 wk after
Carrot
Daucus carota subsp. sativus var. sativus
18 May
2 Jul
0 wk
18 May
22 Jun
0 wk
Palm Kale
Brassica oleracea (Palm Kale-gruppen)
30 Mar – 13 Apr
7 Jun
5-7 wk
18 May
12 Jul
0 wk
18 May
2 Jul
0 wk
Potato
Solanum tuberosum
16 – 30 Apr
22 May
4-6 wk
28 May
19 Jun
1 wk after
28 May
9 Jun
1 wk after
Ornamental Kale
Brassica oleracea (Ornamental-gruppen)
30 Mar – 13 Apr
17 Jun
5-7 wk
18 May
22 Jul
0 wk
19 May
12 Jul
0 wk
Pumpkin
Cucurbita pepo
22 – 29 May
6 Jun
3-4 wk
19 Jun
27 Jun
5 wk after
Beetroot
Beta vulgaris (Conditiva-gruppen)
22 – 29 Apr
8 Jun
3-4 wk
20 May
29 Jun
0 wk
31 May
19 Jun
2 wk after
Red Cabbage
Brassica oleracea (Red Cabbage-gruppen)
6 – 20 Apr
19 Jun
4-6 wk
18 May
17 Jul
0 wk
Lettuce
Lactuca sativa
20 – 27 Apr
6 Jul
3-4 wk
18 May
27 Jul
0 wk
19 May
17 Jul
0 wk
Savoy Cabbage
Brassica oleracea (Savoy Cabbage-gruppen)
6 – 20 Apr
19 Jun
4-6 wk
18 May
17 Jul
0 wk
Shallot (bulbs)
Allium cepa (Aggregatum-gruppen)
20 Apr – 4 May
29 May
2-4 wk
18 May
12 Jun
0 wk
18 May
2 Jun
0 wk
Shallot (sets)
Allium cepa (Aggregatum-gruppen)
19 May
10 Jun
0 wk
19 May
31 May
0 wk
Spinach
Spinacia oleracea
20 – 27 Apr
21 Jul
3-4 wk
18 May
11 Aug
0 wk
15 May
1 Aug
0 wk
Sweet potato
Ipomoea batatas
12 – 26 Jun
4-6 wk
24 Jul
10 wk after
Garden tomato
Solanum lycopersicum
Fleece
29 Mar – 12 Apr
1 May
6-8 wk
24 May
12 Jun
1 wk after
Tomatillo
Physalis ixocarpa
Common Bean
Phaseolus vulgaris
3 – 17 May
8 Jun
2-4 wk
31 May
22 Jun
2 wk after
30 Jun
6 wk after
White Cabbage
Brassica oleracea (White Cabbage-gruppen)
6 – 20 Apr
19 Jun
4-6 wk
18 May
17 Jul
0 wk
Garden pea
Pisum sativum
20 – 27 Apr
21 Jun
3-4 wk
18 May
12 Jul
0 wk
19 May
2 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
8 – 22 May
15 May
4-6 wk
19 Jun
5 wk after
Lemon balm
Melissa officinalis
9 – 23 Mar
17 May
8-10 wk
18 May
12 Jul
0 wk
12 Jun
2 Jul
4 wk after
Dill
Anethum graveolens
19 May
18 Jul
0 wk
Wild chives
Allium schoenoprasum
23 Mar – 6 Apr
31 May
6-8 wk
18 May
12 Jul
0 wk
19 May
2 Jul
0 wk
Spearmint
Mentha spicata
23 Feb – 23 Mar
17 May
8-12 wk
18 May
12 Jul
0 wk
12 Jun
2 Jul
4 wk after
Coriander
Coriandrum sativum
18 May
7 Aug
0 wk
31 May
28 Jul
2 wk after
Garden sage
Salvia officinalis
11 – 25 Mar
2 May
8-10 wk
20 May
27 Jun
0 wk
Common thyme
Thymus vulgaris
9 – 23 Mar
7 May
8-10 wk
18 May
2 Jul
0 wk
Oregano
Origanum vulgare
23 Mar – 6 Apr
21 May
6-8 wk
18 May
2 Jul
0 wk
12 Jun
22 Jun
4 wk after
Parsley
Petroselinum crispum
23 Mar – 6 Apr
21 May
6-8 wk
18 May
2 Jul
0 wk
19 May
22 Jun
0 wk
Rosemary
Salvia rosmarinus
11 Feb – 11 Mar
22 Mar
10-14 wk
20 May
31 May
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
22 – 29 May
22 May
3-4 wk
19 Jun
5 wk after
Cornflower
Centaurea cyanus
18 May
12 Jul
0 wk
19 May
2 Jul
0 wk
Statice
Limonium sinuatum
22 Mar – 5 Apr
23 Apr
8-10 wk
31 May
18 Jun
2 wk after
Sweet William
Dianthus barbatus
23 Mar – 6 Apr
6-8 wk
18 May
0 wk
28 May
1 wk after
Snow-on-the-mountain
Euphorbia marginata
5 – 19 Apr
7 May
6-8 wk
31 May
18 Jun
2 wk after
24 Jul
10 wk after
Pinnate dahlia
Dahlia × pinnata
3 – 17 Apr
12 May
6-8 wk
29 May
23 Jun
2 wk after
Pinnate dahlia (tubers)
Dahlia × pinnata
17 Apr – 15 May
26 May
4-8 wk
12 Jun
23 Jun
4 wk after
12 Jun
13 Jun
4 wk after
Foxglove
Digitalis purpurea
9 – 23 Mar
8-10 wk
18 May
0 wk
31 May
2 wk after
Busy lizzie
Impatiens walleriana
27 Mar – 24 Apr
12 Jun
8-12 wk
19 Jun
7 Aug
5 wk after
Creeping zinnia
Sanvitalia procumbens
5 – 19 Apr
17 May
6-8 wk
31 May
28 Jun
2 wk after
Hyacinth bean
Dolichos lablab
Season too short
19 Apr – 3 May
25 Apr
4-6 wk
31 May
2 wk after
Chinese lantern
Physalis alkekengi
11 – 25 Mar
13 Apr
8-10 wk
20 May
8 Jun
0 wk
Love in a mist
Nigella damascena
18 May
27 Jun
0 wk
19 May
17 Jun
0 wk
Strawflower
Xerochrysum bracteatum
5 – 19 Apr
27 Apr
6-8 wk
31 May
8 Jun
2 wk after
24 Jul
10 wk after
Purple-top vervain
Verbena bonariensis
25 Feb – 25 Mar
13 Apr
8-12 wk
20 May
8 Jun
0 wk
Cardoon
Cynara cardunculus
Fleece
1 – 29 Mar
18 Mar
8-12 wk
24 May
1 wk after
Regal-foxtail
Ptilotus nobilis
Fleece
8 Mar – 5 Apr
17 Apr
8-12 wk
31 May
12 Jun
2 wk after
Globe amaranth
Gomphrena globosa
Fleece
5 – 19 Apr
1 May
6-8 wk
31 May
12 Jun
2 wk after
Corn poppy
Papaver rhoeas
18 May
12 Jul
0 wk
19 May
2 Jul
0 wk
Snapdragon
Antirrhinum majus
23 Feb – 23 Mar
7 May
8-12 wk
18 May
2 Jul
0 wk
28 May
22 Jun
1 wk after
Flossflower
Ageratum houstonianum
10 – 24 Apr
3 May
8-10 wk
19 Jun
28 Jun
5 wk after
Sweet pea
Lathyrus odoratus
23 Mar – 13 Apr
28 May
5-8 wk
18 May
2 Jul
0 wk
Stock
Matthiola incana
23 Mar – 6 Apr
31 May
6-8 wk
18 May
12 Jul
0 wk
31 May
2 Jul
2 wk after
Wormwood
Artemisia absinthium
23 Mar – 6 Apr
1 May
6-8 wk
18 May
12 Jun
0 wk
31 May
2 Jun
2 wk after
Mexican sunflower
Tithonia rotundifolia
Fleece
19 Apr – 3 May
10 May
4-6 wk
31 May
7 Jun
2 wk after
Garden pansy
Viola × wittrockiana
9 – 23 Mar
17 May
8-10 wk
18 May
12 Jul
0 wk
28 May
2 Jul
1 wk after
Petunia
Petunia
8 Mar – 5 Apr
23 Apr
8-12 wk
31 May
18 Jun
2 wk after
Sweet Scabious
Scabiosa atropurpurea
25 Mar – 8 Apr
27 Apr
6-8 wk
20 May
8 Jun
0 wk
30 Jun
6 wk after
Common zinnia
Zinnia elegans
19 Apr – 3 May
25 May
4-6 wk
31 May
22 Jun
2 wk after
Common morning glory
Ipomoea purpurea
15 – 29 May
22 May
3-5 wk
19 Jun
5 wk after
Garden cosmos
Cosmos bipinnatus
19 Apr – 3 May
26 May
4-6 wk
31 May
23 Jun
2 wk after
30 Jun
6 wk after
Scarlet milkweed
Asclepias curassavica
17 Apr – 15 May
7 May
8-12 wk
10 Jul
8 wk after
Bee balm
Monarda didyma
23 Feb – 23 Mar
17 Apr
8-12 wk
18 May
12 Jun
0 wk
12 Jun
4 wk after
Yarrow
Achillea millefolium
23 Mar – 6 Apr
1 Apr
6-8 wk
18 May
0 wk
31 May
2 wk after
Safflower
Carthamus tinctorius
18 May
12 Jun
0 wk
19 May
2 Jun
0 wk
Iceland poppy
Papaver nudicaule
Season too short
23 Mar – 6 Apr
21 May
6-8 wk
18 May
2 Jul
0 wk
2 May
22 Jun
2 wk before
Bishop's flower
Ammi majus
6 – 20 Apr
4 Jun
4-6 wk
18 May
2 Jul
0 wk
31 May
22 Jun
2 wk after
Drumsticks
Pycnosorus globosus
Greenhouse
1 – 15 Mar
3 Apr
10-12 wk
24 May
12 Jun
1 wk after
Sunflower
Helianthus annuus
3 – 10 May
30 May
3-4 wk
31 May
20 Jun
2 wk after
12 Jun
4 wk after
China aster
Callistephus chinensis
5 – 19 Apr
19 May
6-8 wk
31 May
30 Jun
2 wk after
30 Jun
6 wk after
Annual phlox
Phlox drummondii
29 Mar – 12 Apr
17 May
6-8 wk
24 May
28 Jun
1 wk after
30 Jun
6 wk after
Hollyhock
Alcea rosea
23 Mar – 6 Apr
6-8 wk
18 May
0 wk
31 May
2 wk after
Alpine delphinium
Delphinium elatum
23 Feb – 23 Mar
17 Apr
8-12 wk
18 May
12 Jun
0 wk
12 Jun
4 wk after
African marigold
Tagetes erecta
5 – 19 Apr
17 May
6-8 wk
31 May
28 Jun
2 wk after
Black-eyed Susan
Rudbeckia hirta
25 Mar – 8 Apr
9 May
6-8 wk
20 May
20 Jun
0 wk
30 Jun
6 wk after
Wood sage
Salvia nemorosa
9 – 23 Mar
7 Apr
8-10 wk
18 May
2 Jun
0 wk
12 Jun
4 wk after
Black-eyed susan vine
Thunbergia alata
10 Apr – 8 May
1 May
6-10 wk
19 Jun
5 wk after
California goldenpoppy
Eschscholzia californica
18 May
12 Jul
0 wk
19 May
2 Jul
0 wk
Painted tongue
Salpiglossis sinuata
22 Mar – 5 Apr
19 Apr
8-10 wk
31 May
14 Jun
2 wk after
Water forget-me-not
Myosotis scorpioides
23 Mar – 6 Apr
1 May
6-8 wk
18 May
12 Jun
0 wk
31 May
2 Jun
2 wk after