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Method
Rel. frost
Last spring frost (0°C) 21 May Normal year · 20 years of data
Frost-free season 124 days 21 May – 22 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)
2 – 16 Apr
16 Jun
5-7 wk
21 May
21 Jul
0 wk
25 May
11 Jul
1 wk after
Broccoli
Brassica oleracea (Italica-gruppen)
9 – 23 Apr
28 Jun
4-6 wk
21 May
26 Jul
0 wk
25 May
16 Jul
1 wk after
Chili pepper
Capsicum annuum
Fleece
11 Mar – 8 Apr
25 Mar
8-12 wk
3 Jun
2 wk after
Curly Kale
Brassica oleracea (Curly Kale-gruppen)
2 – 16 Apr
11 Jun
5-7 wk
21 May
16 Jul
0 wk
21 May
6 Jul
0 wk
Garden cucumber
Cucumis sativus
25 May – 1 Jun
3-4 wk
22 Jun
5 wk after
Florence Fennel
Foeniculum vulgare
18 – 25 May
27 May
4-5 wk
22 Jun
24 Jun
5 wk after
9 Jul
7 wk after
Butter bean
Phaseolus lunatus
Season too short
1 – 8 Jun
3-4 wk
29 Jun
6 wk after
Onion
Allium cepa (Cepa-gruppen)
26 Feb – 26 Mar
30 Mar
8-12 wk
21 May
25 May
0 wk
11 Jun
3 wk after
Onion (sets)
Allium cepa (Cepa-gruppen)
25 May
14 Jun
1 wk after
25 May
4 Jun
1 wk after
Maize
Zea mays
6 – 13 May
9 May
3-4 wk
3 Jun
2 wk after
Swiss Chard
Beta vulgaris (Flavescens-gruppen)
25 Apr – 2 May
5 Jul
3-4 wk
23 May
26 Jul
0 wk
11 Jun
16 Jul
3 wk after
Carrot
Daucus carota subsp. sativus var. sativus
21 May
6 Jul
0 wk
21 May
26 Jun
0 wk
Palm Kale
Brassica oleracea (Palm Kale-gruppen)
2 – 16 Apr
11 Jun
5-7 wk
21 May
16 Jul
0 wk
21 May
6 Jul
0 wk
Potato
Solanum tuberosum
25 Apr – 9 May
26 May
4-6 wk
6 Jun
23 Jun
2 wk after
6 Jun
13 Jun
2 wk after
Ornamental Kale
Brassica oleracea (Ornamental-gruppen)
2 – 16 Apr
21 Jun
5-7 wk
21 May
26 Jul
0 wk
25 May
16 Jul
1 wk after
Pumpkin
Cucurbita pepo
25 May – 1 Jun
14 Jun
3-4 wk
22 Jun
5 Jul
5 wk after
Beetroot
Beta vulgaris (Conditiva-gruppen)
25 Apr – 2 May
8 Jun
3-4 wk
23 May
29 Jun
0 wk
11 Jun
19 Jun
3 wk after
Red Cabbage
Brassica oleracea (Red Cabbage-gruppen)
9 – 23 Apr
23 Jun
4-6 wk
21 May
21 Jul
0 wk
Lettuce
Lactuca sativa
23 – 30 Apr
10 Jul
3-4 wk
21 May
31 Jul
0 wk
25 May
21 Jul
1 wk after
Savoy Cabbage
Brassica oleracea (Savoy Cabbage-gruppen)
9 – 23 Apr
23 Jun
4-6 wk
21 May
21 Jul
0 wk
Shallot (bulbs)
Allium cepa (Aggregatum-gruppen)
23 Apr – 7 May
2 Jun
2-4 wk
21 May
16 Jun
0 wk
21 May
6 Jun
0 wk
Shallot (sets)
Allium cepa (Aggregatum-gruppen)
25 May
14 Jun
1 wk after
25 May
4 Jun
1 wk after
Spinach
Spinacia oleracea
23 – 30 Apr
25 Jul
3-4 wk
21 May
15 Aug
0 wk
17 May
5 Aug
1 wk before
Sweet potato
Ipomoea batatas
22 Jun – 6 Jul
4-6 wk
3 Aug
11 wk after
Garden tomato
Solanum lycopersicum
8 – 22 Apr
18 Apr
6-8 wk
3 Jun
2 wk after
Tomatillo
Physalis ixocarpa
Common Bean
Phaseolus vulgaris
6 – 20 May
16 Jun
2-4 wk
3 Jun
30 Jun
2 wk after
9 Jul
7 wk after
White Cabbage
Brassica oleracea (White Cabbage-gruppen)
9 – 23 Apr
23 Jun
4-6 wk
21 May
21 Jul
0 wk
Garden pea
Pisum sativum
23 – 30 Apr
25 Jun
3-4 wk
21 May
16 Jul
0 wk
25 May
6 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
11 – 25 May
23 May
4-6 wk
22 Jun
5 wk after
Lemon balm
Melissa officinalis
12 – 26 Mar
21 May
8-10 wk
21 May
16 Jul
0 wk
25 Jun
6 Jul
5 wk after
Dill
Anethum graveolens
25 May
26 Jul
1 wk after
Wild chives
Allium schoenoprasum
26 Mar – 9 Apr
4 Jun
6-8 wk
21 May
16 Jul
0 wk
25 May
6 Jul
1 wk after
Spearmint
Mentha spicata
26 Feb – 26 Mar
21 May
8-12 wk
21 May
16 Jul
0 wk
25 Jun
6 Jul
5 wk after
Coriander
Coriandrum sativum
21 May
15 Aug
0 wk
11 Jun
5 Aug
3 wk after
Garden sage
Salvia officinalis
14 – 28 Mar
6 May
8-10 wk
23 May
1 Jul
0 wk
Common thyme
Thymus vulgaris
12 – 26 Mar
11 May
8-10 wk
21 May
6 Jul
0 wk
Oregano
Origanum vulgare
26 Mar – 9 Apr
25 May
6-8 wk
21 May
6 Jul
0 wk
25 Jun
26 Jun
5 wk after
Parsley
Petroselinum crispum
26 Mar – 9 Apr
25 May
6-8 wk
21 May
6 Jul
0 wk
25 May
26 Jun
1 wk after
Rosemary
Salvia rosmarinus
14 Feb – 14 Mar
31 Mar
10-14 wk
23 May
9 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
25 May – 1 Jun
30 May
3-4 wk
22 Jun
5 wk after
Cornflower
Centaurea cyanus
21 May
16 Jul
0 wk
25 May
6 Jul
1 wk after
Statice
Limonium sinuatum
25 Mar – 8 Apr
29 Apr
8-10 wk
3 Jun
24 Jun
2 wk after
Sweet William
Dianthus barbatus
26 Mar – 9 Apr
6-8 wk
21 May
0 wk
6 Jun
2 wk after
Snow-on-the-mountain
Euphorbia marginata
8 – 22 Apr
13 May
6-8 wk
3 Jun
24 Jun
2 wk after
3 Aug
11 wk after
Pinnate dahlia
Dahlia × pinnata
6 – 20 Apr
16 May
6-8 wk
1 Jun
27 Jun
2 wk after
Pinnate dahlia (tubers)
Dahlia × pinnata
30 Apr – 28 May
30 May
4-8 wk
25 Jun
27 Jun
5 wk after
25 Jun
5 wk after
Foxglove
Digitalis purpurea
12 – 26 Mar
8-10 wk
21 May
0 wk
11 Jun
3 wk after
Busy lizzie
Impatiens walleriana
30 Mar – 27 Apr
18 Jun
8-12 wk
22 Jun
13 Aug
5 wk after
Creeping zinnia
Sanvitalia procumbens
8 – 22 Apr
23 May
6-8 wk
3 Jun
4 Jul
2 wk after
Hyacinth bean
Dolichos lablab
Greenhouse
22 Apr – 6 May
1 May
4-6 wk
3 Jun
2 wk after
Chinese lantern
Physalis alkekengi
14 – 28 Mar
21 Apr
8-10 wk
23 May
16 Jun
0 wk
Love in a mist
Nigella damascena
21 May
1 Jul
0 wk
25 May
21 Jun
1 wk after
Strawflower
Xerochrysum bracteatum
8 – 22 Apr
3 May
6-8 wk
3 Jun
14 Jun
2 wk after
3 Aug
11 wk after
Purple-top vervain
Verbena bonariensis
28 Feb – 28 Mar
21 Apr
8-12 wk
23 May
16 Jun
0 wk
Cardoon
Cynara cardunculus
Fleece
4 Mar – 1 Apr
22 Mar
8-12 wk
27 May
1 wk after
Regal-foxtail
Ptilotus nobilis
30 Mar – 27 Apr
15 Apr
8-12 wk
22 Jun
5 wk after
Globe amaranth
Gomphrena globosa
27 Apr – 11 May
29 Apr
6-8 wk
22 Jun
5 wk after
Corn poppy
Papaver rhoeas
21 May
16 Jul
0 wk
25 May
6 Jul
1 wk after
Snapdragon
Antirrhinum majus
26 Feb – 26 Mar
11 May
8-12 wk
21 May
6 Jul
0 wk
6 Jun
26 Jun
2 wk after
Flossflower
Ageratum houstonianum
13 – 27 Apr
9 May
8-10 wk
22 Jun
4 Jul
5 wk after
Sweet pea
Lathyrus odoratus
26 Mar – 16 Apr
1 Jun
5-8 wk
21 May
6 Jul
0 wk
Stock
Matthiola incana
26 Mar – 9 Apr
4 Jun
6-8 wk
21 May
16 Jul
0 wk
11 Jun
6 Jul
3 wk after
Wormwood
Artemisia absinthium
26 Mar – 9 Apr
5 May
6-8 wk
21 May
16 Jun
0 wk
11 Jun
3 wk after
Mexican sunflower
Tithonia rotundifolia
Fleece
22 Apr – 6 May
16 May
4-6 wk
3 Jun
13 Jun
2 wk after
Garden pansy
Viola × wittrockiana
12 – 26 Mar
21 May
8-10 wk
21 May
16 Jul
0 wk
6 Jun
6 Jul
2 wk after
Petunia
Petunia
11 Mar – 8 Apr
29 Apr
8-12 wk
3 Jun
24 Jun
2 wk after
Sweet Scabious
Scabiosa atropurpurea
28 Mar – 11 Apr
5 May
6-8 wk
23 May
16 Jun
0 wk
9 Jul
7 wk after
Common zinnia
Zinnia elegans
22 Apr – 6 May
31 May
4-6 wk
3 Jun
28 Jun
2 wk after
Common morning glory
Ipomoea purpurea
18 May – 1 Jun
30 May
3-5 wk
22 Jun
5 wk after
Garden cosmos
Cosmos bipinnatus
22 Apr – 6 May
30 May
4-6 wk
3 Jun
27 Jun
2 wk after
9 Jul
7 wk after
Scarlet milkweed
Asclepias curassavica
Fleece
30 Mar – 27 Apr
23 May
8-12 wk
22 Jun
18 Jul
5 wk after
Bee balm
Monarda didyma
26 Feb – 26 Mar
21 Apr
8-12 wk
21 May
16 Jun
0 wk
25 Jun
5 wk after
Yarrow
Achillea millefolium
26 Mar – 9 Apr
5 Apr
6-8 wk
21 May
0 wk
11 Jun
3 wk after
Safflower
Carthamus tinctorius
21 May
16 Jun
0 wk
25 May
6 Jun
1 wk after
Iceland poppy
Papaver nudicaule
Season too short
26 Mar – 9 Apr
25 May
6-8 wk
21 May
6 Jul
0 wk
3 May
26 Jun
3 wk before
Bishop's flower
Ammi majus
9 – 23 Apr
8 Jun
4-6 wk
21 May
6 Jul
0 wk
11 Jun
26 Jun
3 wk after
Drumsticks
Pycnosorus globosus
Fleece
11 – 25 Mar
29 Mar
10-12 wk
3 Jun
7 Jun
2 wk after
Sunflower
Helianthus annuus
6 – 13 May
8 Jun
3-4 wk
3 Jun
29 Jun
2 wk after
25 Jun
5 wk after
China aster
Callistephus chinensis
8 – 22 Apr
28 May
6-8 wk
3 Jun
9 Jul
2 wk after
9 Jul
7 wk after
Annual phlox
Phlox drummondii
1 – 15 Apr
23 May
6-8 wk
27 May
4 Jul
1 wk after
9 Jul
7 wk after
Hollyhock
Alcea rosea
26 Mar – 9 Apr
6-8 wk
21 May
0 wk
11 Jun
3 wk after
Alpine delphinium
Delphinium elatum
26 Feb – 26 Mar
21 Apr
8-12 wk
21 May
16 Jun
0 wk
25 Jun
5 wk after
African marigold
Tagetes erecta
8 – 22 Apr
23 May
6-8 wk
3 Jun
4 Jul
2 wk after
Black-eyed Susan
Rudbeckia hirta
28 Mar – 11 Apr
18 May
6-8 wk
23 May
29 Jun
0 wk
9 Jul
7 wk after
Wood sage
Salvia nemorosa
12 – 26 Mar
11 Apr
8-10 wk
21 May
6 Jun
0 wk
25 Jun
5 wk after
Black-eyed susan vine
Thunbergia alata
13 Apr – 11 May
9 May
6-10 wk
22 Jun
5 wk after
California goldenpoppy
Eschscholzia californica
21 May
16 Jul
0 wk
25 May
6 Jul
1 wk after
Painted tongue
Salpiglossis sinuata
25 Mar – 8 Apr
29 Apr
8-10 wk
3 Jun
24 Jun
2 wk after
Water forget-me-not
Myosotis scorpioides
26 Mar – 9 Apr
5 May
6-8 wk
21 May
16 Jun
0 wk
11 Jun
3 wk after