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Method
Rel. frost
Last spring frost (0°C) 18 May Normal year · 20 years of data
Frost-free season 136 days 18 May – 1 Oct
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
16 Jun
5-7 wk
18 May
21 Jul
0 wk
11 May
11 Jul
1 wk before
Broccoli
Brassica oleracea (Italica-gruppen)
6 – 20 Apr
28 Jun
4-6 wk
18 May
26 Jul
0 wk
11 May
16 Jul
1 wk before
Chili pepper
Capsicum annuum
Greenhouse
1 – 29 Mar
6 Apr
8-12 wk
24 May
1 Jun
1 wk after
Curly Kale
Brassica oleracea (Curly Kale-gruppen)
30 Mar – 13 Apr
11 Jun
5-7 wk
18 May
16 Jul
0 wk
6 May
6 Jul
2 wk before
Garden cucumber
Cucumis sativus
22 – 29 May
3-4 wk
19 Jun
5 wk after
Florence Fennel
Foeniculum vulgare
15 – 22 May
1 Jun
4-5 wk
19 Jun
29 Jun
5 wk after
23 Jun
5 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
29 Mar
8-12 wk
18 May
24 May
0 wk
28 May
1 wk after
Onion (sets)
Allium cepa (Cepa-gruppen)
11 May
13 Jun
1 wk before
11 May
3 Jun
1 wk before
Maize
Zea mays
Fleece
26 Apr – 3 May
21 May
3-4 wk
24 May
11 Jun
1 wk after
Swiss Chard
Beta vulgaris (Flavescens-gruppen)
22 – 29 Apr
5 Jul
3-4 wk
20 May
26 Jul
0 wk
28 May
16 Jul
1 wk after
Carrot
Daucus carota subsp. sativus var. sativus
18 May
6 Jul
0 wk
6 May
26 Jun
2 wk before
Palm Kale
Brassica oleracea (Palm Kale-gruppen)
30 Mar – 13 Apr
11 Jun
5-7 wk
18 May
16 Jul
0 wk
6 May
6 Jul
2 wk before
Potato
Solanum tuberosum
11 – 25 Apr
27 May
4-6 wk
23 May
24 Jun
1 wk after
23 May
14 Jun
1 wk after
Ornamental Kale
Brassica oleracea (Ornamental-gruppen)
30 Mar – 13 Apr
21 Jun
5-7 wk
18 May
26 Jul
0 wk
11 May
16 Jul
1 wk before
Pumpkin
Cucurbita pepo
22 – 29 May
5 Jun
3-4 wk
19 Jun
26 Jun
5 wk after
Beetroot
Beta vulgaris (Conditiva-gruppen)
22 – 29 Apr
10 Jun
3-4 wk
20 May
1 Jul
0 wk
28 May
21 Jun
1 wk after
Red Cabbage
Brassica oleracea (Red Cabbage-gruppen)
6 – 20 Apr
23 Jun
4-6 wk
18 May
21 Jul
0 wk
Lettuce
Lactuca sativa
20 – 27 Apr
10 Jul
3-4 wk
18 May
31 Jul
0 wk
11 May
21 Jul
1 wk before
Savoy Cabbage
Brassica oleracea (Savoy Cabbage-gruppen)
6 – 20 Apr
23 Jun
4-6 wk
18 May
21 Jul
0 wk
Shallot (bulbs)
Allium cepa (Aggregatum-gruppen)
8 – 22 Apr
2 Jun
2-4 wk
6 May
16 Jun
2 wk before
6 May
6 Jun
2 wk before
Shallot (sets)
Allium cepa (Aggregatum-gruppen)
11 May
13 Jun
1 wk before
11 May
3 Jun
1 wk before
Spinach
Spinacia oleracea
20 – 27 Apr
25 Jul
3-4 wk
18 May
15 Aug
0 wk
30 Apr
5 Aug
3 wk before
Sweet potato
Ipomoea batatas
14 – 28 Jun
4-6 wk
26 Jul
10 wk after
Garden tomato
Solanum lycopersicum
Fleece
29 Mar – 12 Apr
30 Apr
6-8 wk
24 May
11 Jun
1 wk after
Tomatillo
Physalis ixocarpa
Common Bean
Phaseolus vulgaris
3 – 17 May
7 Jun
2-4 wk
31 May
21 Jun
2 wk after
23 Jun
5 wk after
White Cabbage
Brassica oleracea (White Cabbage-gruppen)
6 – 20 Apr
23 Jun
4-6 wk
18 May
21 Jul
0 wk
Garden pea
Pisum sativum
20 – 27 Apr
25 Jun
3-4 wk
18 May
16 Jul
0 wk
11 May
6 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
8 – 22 May
14 May
4-6 wk
19 Jun
5 wk after
Lemon balm
Melissa officinalis
9 – 23 Mar
21 May
8-10 wk
18 May
16 Jul
0 wk
8 Jun
6 Jul
3 wk after
Dill
Anethum graveolens
11 May
26 Jul
1 wk before
Wild chives
Allium schoenoprasum
23 Mar – 6 Apr
4 Jun
6-8 wk
18 May
16 Jul
0 wk
11 May
6 Jul
1 wk before
Spearmint
Mentha spicata
23 Feb – 23 Mar
21 May
8-12 wk
18 May
16 Jul
0 wk
8 Jun
6 Jul
3 wk after
Coriander
Coriandrum sativum
18 May
15 Aug
0 wk
28 May
5 Aug
1 wk after
Garden sage
Salvia officinalis
11 – 25 Mar
6 May
8-10 wk
20 May
1 Jul
0 wk
Common thyme
Thymus vulgaris
9 – 23 Mar
11 May
8-10 wk
18 May
6 Jul
0 wk
Oregano
Origanum vulgare
23 Mar – 6 Apr
25 May
6-8 wk
18 May
6 Jul
0 wk
8 Jun
26 Jun
3 wk after
Parsley
Petroselinum crispum
23 Mar – 6 Apr
25 May
6-8 wk
18 May
6 Jul
0 wk
11 May
26 Jun
1 wk before
Rosemary
Salvia rosmarinus
11 Feb – 11 Mar
4 Apr
10-14 wk
20 May
13 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
22 – 29 May
3-4 wk
19 Jun
5 wk after
Cornflower
Centaurea cyanus
18 May
16 Jul
0 wk
11 May
6 Jul
1 wk before
Statice
Limonium sinuatum
22 Mar – 5 Apr
29 Apr
8-10 wk
31 May
24 Jun
2 wk after
Sweet William
Dianthus barbatus
23 Mar – 6 Apr
6-8 wk
18 May
0 wk
23 May
1 wk after
Snow-on-the-mountain
Euphorbia marginata
5 – 19 Apr
13 May
6-8 wk
31 May
24 Jun
2 wk after
26 Jul
10 wk after
Pinnate dahlia
Dahlia × pinnata
3 – 17 Apr
19 May
6-8 wk
29 May
30 Jun
2 wk after
Pinnate dahlia (tubers)
Dahlia × pinnata
13 Apr – 11 May
2 Jun
4-8 wk
8 Jun
30 Jun
3 wk after
8 Jun
20 Jun
3 wk after
Foxglove
Digitalis purpurea
9 – 23 Mar
8-10 wk
18 May
0 wk
28 May
1 wk after
Busy lizzie
Impatiens walleriana
27 Mar – 24 Apr
18 Jun
8-12 wk
19 Jun
13 Aug
5 wk after
Creeping zinnia
Sanvitalia procumbens
5 – 19 Apr
23 May
6-8 wk
31 May
4 Jul
2 wk after
Hyacinth bean
Dolichos lablab
Season too short
19 Apr – 3 May
1 May
4-6 wk
31 May
2 wk after
Chinese lantern
Physalis alkekengi
11 – 25 Mar
21 Apr
8-10 wk
20 May
16 Jun
0 wk
Love in a mist
Nigella damascena
18 May
1 Jul
0 wk
11 May
21 Jun
1 wk before
Strawflower
Xerochrysum bracteatum
5 – 19 Apr
3 May
6-8 wk
31 May
14 Jun
2 wk after
26 Jul
10 wk after
Purple-top vervain
Verbena bonariensis
25 Feb – 25 Mar
21 Apr
8-12 wk
20 May
16 Jun
0 wk
Cardoon
Cynara cardunculus
Fleece
1 – 29 Mar
22 Mar
8-12 wk
24 May
1 wk after
Regal-foxtail
Ptilotus nobilis
Fleece
8 Mar – 5 Apr
23 Apr
8-12 wk
31 May
18 Jun
2 wk after
Globe amaranth
Gomphrena globosa
Fleece
5 – 19 Apr
7 May
6-8 wk
31 May
18 Jun
2 wk after
Corn poppy
Papaver rhoeas
18 May
16 Jul
0 wk
11 May
6 Jul
1 wk before
Snapdragon
Antirrhinum majus
23 Feb – 23 Mar
11 May
8-12 wk
18 May
6 Jul
0 wk
23 May
26 Jun
1 wk after
Flossflower
Ageratum houstonianum
10 – 24 Apr
9 May
8-10 wk
19 Jun
4 Jul
5 wk after
Sweet pea
Lathyrus odoratus
23 Mar – 13 Apr
1 Jun
5-8 wk
18 May
6 Jul
0 wk
Stock
Matthiola incana
23 Mar – 6 Apr
4 Jun
6-8 wk
18 May
16 Jul
0 wk
28 May
6 Jul
1 wk after
Wormwood
Artemisia absinthium
23 Mar – 6 Apr
5 May
6-8 wk
18 May
16 Jun
0 wk
28 May
6 Jun
1 wk after
Mexican sunflower
Tithonia rotundifolia
Fleece
19 Apr – 3 May
16 May
4-6 wk
31 May
13 Jun
2 wk after
Garden pansy
Viola × wittrockiana
9 – 23 Mar
21 May
8-10 wk
18 May
16 Jul
0 wk
23 May
6 Jul
1 wk after
Petunia
Petunia
8 Mar – 5 Apr
29 Apr
8-12 wk
31 May
24 Jun
2 wk after
Sweet Scabious
Scabiosa atropurpurea
25 Mar – 8 Apr
5 May
6-8 wk
20 May
16 Jun
0 wk
23 Jun
5 wk after
Common zinnia
Zinnia elegans
19 Apr – 3 May
31 May
4-6 wk
31 May
28 Jun
2 wk after
Common morning glory
Ipomoea purpurea
15 – 29 May
21 May
3-5 wk
19 Jun
5 wk after
Garden cosmos
Cosmos bipinnatus
19 Apr – 3 May
2 Jun
4-6 wk
31 May
30 Jun
2 wk after
23 Jun
5 wk after
Scarlet milkweed
Asclepias curassavica
Fleece
27 Mar – 24 Apr
23 May
8-12 wk
19 Jun
18 Jul
5 wk after
Bee balm
Monarda didyma
23 Feb – 23 Mar
21 Apr
8-12 wk
18 May
16 Jun
0 wk
8 Jun
3 wk after
Yarrow
Achillea millefolium
23 Mar – 6 Apr
5 Apr
6-8 wk
18 May
0 wk
28 May
1 wk after
Safflower
Carthamus tinctorius
18 May
16 Jun
0 wk
11 May
6 Jun
1 wk before
Iceland poppy
Papaver nudicaule
Season too short
23 Mar – 6 Apr
25 May
6-8 wk
18 May
6 Jul
0 wk
9 Apr
26 Jun
6 wk before
Bishop's flower
Ammi majus
6 – 20 Apr
8 Jun
4-6 wk
18 May
6 Jul
0 wk
28 May
26 Jun
1 wk after
Drumsticks
Pycnosorus globosus
Fleece
8 – 22 Mar
1 Apr
10-12 wk
31 May
10 Jun
2 wk after
Sunflower
Helianthus annuus
3 – 10 May
12 Jun
3-4 wk
31 May
3 Jul
2 wk after
8 Jun
23 Jun
3 wk after
China aster
Callistephus chinensis
5 – 19 Apr
1 Jun
6-8 wk
31 May
13 Jul
2 wk after
23 Jun
3 Jul
5 wk after
Annual phlox
Phlox drummondii
29 Mar – 12 Apr
23 May
6-8 wk
24 May
4 Jul
1 wk after
23 Jun
24 Jun
5 wk after
Hollyhock
Alcea rosea
23 Mar – 6 Apr
6-8 wk
18 May
0 wk
28 May
1 wk after
Alpine delphinium
Delphinium elatum
23 Feb – 23 Mar
21 Apr
8-12 wk
18 May
16 Jun
0 wk
8 Jun
3 wk after
African marigold
Tagetes erecta
5 – 19 Apr
23 May
6-8 wk
31 May
4 Jul
2 wk after
Black-eyed Susan
Rudbeckia hirta
25 Mar – 8 Apr
22 May
6-8 wk
20 May
3 Jul
0 wk
23 Jun
23 Jun
5 wk after
Wood sage
Salvia nemorosa
9 – 23 Mar
11 Apr
8-10 wk
18 May
6 Jun
0 wk
8 Jun
3 wk after
Black-eyed susan vine
Thunbergia alata
10 Apr – 8 May
30 Apr
6-10 wk
19 Jun
5 wk after
California goldenpoppy
Eschscholzia californica
18 May
16 Jul
0 wk
11 May
6 Jul
1 wk before
Painted tongue
Salpiglossis sinuata
22 Mar – 5 Apr
4 May
8-10 wk
31 May
29 Jun
2 wk after
Water forget-me-not
Myosotis scorpioides
23 Mar – 6 Apr
5 May
6-8 wk
18 May
16 Jun
0 wk
28 May
6 Jun
1 wk after