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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
15 Jun
5-7 wk
21 May
20 Jul
0 wk
25 May
10 Jul
1 wk after
Broccoli
Brassica oleracea (Italica-gruppen)
9 – 23 Apr
27 Jun
4-6 wk
21 May
25 Jul
0 wk
25 May
15 Jul
1 wk after
Chili pepper
Capsicum annuum
Greenhouse
4 Mar – 1 Apr
14 Apr
8-12 wk
27 May
9 Jun
1 wk after
Curly Kale
Brassica oleracea (Curly Kale-gruppen)
2 – 16 Apr
10 Jun
5-7 wk
21 May
15 Jul
0 wk
21 May
5 Jul
0 wk
Garden cucumber
Cucumis sativus
Fleece
6 – 13 May
8 Jun
3-4 wk
3 Jun
29 Jun
2 wk after
Florence Fennel
Foeniculum vulgare
18 – 25 May
29 May
4-5 wk
22 Jun
26 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
25 Mar
8-12 wk
21 May
0 wk
11 Jun
3 wk after
Onion (sets)
Allium cepa (Cepa-gruppen)
25 May
9 Jun
1 wk after
25 May
30 May
1 wk after
Maize
Zea mays
Fleece
29 Apr – 6 May
29 May
3-4 wk
27 May
19 Jun
1 wk after
Swiss Chard
Beta vulgaris (Flavescens-gruppen)
25 Apr – 2 May
4 Jul
3-4 wk
23 May
25 Jul
0 wk
11 Jun
15 Jul
3 wk after
Carrot
Daucus carota subsp. sativus var. sativus
21 May
5 Jul
0 wk
21 May
25 Jun
0 wk
Palm Kale
Brassica oleracea (Palm Kale-gruppen)
2 – 16 Apr
10 Jun
5-7 wk
21 May
15 Jul
0 wk
21 May
5 Jul
0 wk
Potato
Solanum tuberosum
25 Apr – 9 May
23 May
4-6 wk
6 Jun
20 Jun
2 wk after
6 Jun
10 Jun
2 wk after
Ornamental Kale
Brassica oleracea (Ornamental-gruppen)
2 – 16 Apr
20 Jun
5-7 wk
21 May
25 Jul
0 wk
25 May
15 Jul
1 wk after
Pumpkin
Cucurbita pepo
25 May – 1 Jun
13 Jun
3-4 wk
22 Jun
4 Jul
5 wk after
Beetroot
Beta vulgaris (Conditiva-gruppen)
25 Apr – 2 May
5 Jun
3-4 wk
23 May
26 Jun
0 wk
11 Jun
16 Jun
3 wk after
Red Cabbage
Brassica oleracea (Red Cabbage-gruppen)
9 – 23 Apr
22 Jun
4-6 wk
21 May
20 Jul
0 wk
Lettuce
Lactuca sativa
23 – 30 Apr
9 Jul
3-4 wk
21 May
30 Jul
0 wk
25 May
20 Jul
1 wk after
Savoy Cabbage
Brassica oleracea (Savoy Cabbage-gruppen)
9 – 23 Apr
22 Jun
4-6 wk
21 May
20 Jul
0 wk
Shallot (bulbs)
Allium cepa (Aggregatum-gruppen)
23 Apr – 7 May
1 Jun
2-4 wk
21 May
15 Jun
0 wk
21 May
5 Jun
0 wk
Shallot (sets)
Allium cepa (Aggregatum-gruppen)
25 May
9 Jun
1 wk after
25 May
30 May
1 wk after
Spinach
Spinacia oleracea
23 – 30 Apr
24 Jul
3-4 wk
21 May
14 Aug
0 wk
17 May
4 Aug
1 wk before
Sweet potato
Ipomoea batatas
22 Jun – 6 Jul
4-6 wk
3 Aug
11 wk after
Garden tomato
Solanum lycopersicum
Fleece
1 – 15 Apr
8 May
6-8 wk
27 May
19 Jun
1 wk after
Tomatillo
Physalis ixocarpa
Common Bean
Phaseolus vulgaris
6 – 20 May
15 Jun
2-4 wk
3 Jun
29 Jun
2 wk after
9 Jul
7 wk after
White Cabbage
Brassica oleracea (White Cabbage-gruppen)
9 – 23 Apr
22 Jun
4-6 wk
21 May
20 Jul
0 wk
Garden pea
Pisum sativum
23 – 30 Apr
24 Jun
3-4 wk
21 May
15 Jul
0 wk
25 May
5 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
22 May
4-6 wk
22 Jun
5 wk after
Lemon balm
Melissa officinalis
12 – 26 Mar
20 May
8-10 wk
21 May
15 Jul
0 wk
25 Jun
5 Jul
5 wk after
Dill
Anethum graveolens
25 May
25 Jul
1 wk after
Wild chives
Allium schoenoprasum
26 Mar – 9 Apr
3 Jun
6-8 wk
21 May
15 Jul
0 wk
25 May
5 Jul
1 wk after
Spearmint
Mentha spicata
26 Feb – 26 Mar
20 May
8-12 wk
21 May
15 Jul
0 wk
25 Jun
5 Jul
5 wk after
Coriander
Coriandrum sativum
21 May
14 Aug
0 wk
11 Jun
4 Aug
3 wk after
Garden sage
Salvia officinalis
14 – 28 Mar
5 May
8-10 wk
23 May
30 Jun
0 wk
Common thyme
Thymus vulgaris
12 – 26 Mar
10 May
8-10 wk
21 May
5 Jul
0 wk
Oregano
Origanum vulgare
26 Mar – 9 Apr
24 May
6-8 wk
21 May
5 Jul
0 wk
25 Jun
25 Jun
5 wk after
Parsley
Petroselinum crispum
26 Mar – 9 Apr
24 May
6-8 wk
21 May
5 Jul
0 wk
25 May
25 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
29 May
3-4 wk
22 Jun
5 wk after
Cornflower
Centaurea cyanus
21 May
15 Jul
0 wk
25 May
5 Jul
1 wk after
Statice
Limonium sinuatum
25 Mar – 8 Apr
27 Apr
8-10 wk
3 Jun
22 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
11 May
6-8 wk
3 Jun
22 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
16 Jun
8-12 wk
22 Jun
11 Aug
5 wk after
Creeping zinnia
Sanvitalia procumbens
8 – 22 Apr
21 May
6-8 wk
3 Jun
2 Jul
2 wk after
Hyacinth bean
Dolichos lablab
Season too short
22 Apr – 6 May
29 Apr
4-6 wk
3 Jun
2 wk after
Chinese lantern
Physalis alkekengi
14 – 28 Mar
20 Apr
8-10 wk
23 May
15 Jun
0 wk
Love in a mist
Nigella damascena
21 May
30 Jun
0 wk
25 May
20 Jun
1 wk after
Strawflower
Xerochrysum bracteatum
8 – 22 Apr
1 May
6-8 wk
3 Jun
12 Jun
2 wk after
3 Aug
11 wk after
Purple-top vervain
Verbena bonariensis
28 Feb – 28 Mar
20 Apr
8-12 wk
23 May
15 Jun
0 wk
Cardoon
Cynara cardunculus
Fleece
4 Mar – 1 Apr
21 Mar
8-12 wk
27 May
1 wk after
Regal-foxtail
Ptilotus nobilis
Fleece
11 Mar – 8 Apr
21 Apr
8-12 wk
3 Jun
16 Jun
2 wk after
Globe amaranth
Gomphrena globosa
Fleece
8 – 22 Apr
5 May
6-8 wk
3 Jun
16 Jun
2 wk after
Corn poppy
Papaver rhoeas
21 May
15 Jul
0 wk
25 May
5 Jul
1 wk after
Snapdragon
Antirrhinum majus
26 Feb – 26 Mar
10 May
8-12 wk
21 May
5 Jul
0 wk
6 Jun
25 Jun
2 wk after
Flossflower
Ageratum houstonianum
13 – 27 Apr
7 May
8-10 wk
22 Jun
2 Jul
5 wk after
Sweet pea
Lathyrus odoratus
26 Mar – 16 Apr
31 May
5-8 wk
21 May
5 Jul
0 wk
Stock
Matthiola incana
26 Mar – 9 Apr
3 Jun
6-8 wk
21 May
15 Jul
0 wk
11 Jun
5 Jul
3 wk after
Wormwood
Artemisia absinthium
26 Mar – 9 Apr
4 May
6-8 wk
21 May
15 Jun
0 wk
11 Jun
3 wk after
Mexican sunflower
Tithonia rotundifolia
Fleece
22 Apr – 6 May
14 May
4-6 wk
3 Jun
11 Jun
2 wk after
Garden pansy
Viola × wittrockiana
12 – 26 Mar
20 May
8-10 wk
21 May
15 Jul
0 wk
6 Jun
5 Jul
2 wk after
Petunia
Petunia
11 Mar – 8 Apr
27 Apr
8-12 wk
3 Jun
22 Jun
2 wk after
Sweet Scabious
Scabiosa atropurpurea
28 Mar – 11 Apr
4 May
6-8 wk
23 May
15 Jun
0 wk
9 Jul
7 wk after
Common zinnia
Zinnia elegans
22 Apr – 6 May
29 May
4-6 wk
3 Jun
26 Jun
2 wk after
Common morning glory
Ipomoea purpurea
18 May – 1 Jun
29 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
21 May
8-12 wk
22 Jun
16 Jul
5 wk after
Bee balm
Monarda didyma
26 Feb – 26 Mar
20 Apr
8-12 wk
21 May
15 Jun
0 wk
25 Jun
5 wk after
Yarrow
Achillea millefolium
26 Mar – 9 Apr
4 Apr
6-8 wk
21 May
0 wk
11 Jun
3 wk after
Safflower
Carthamus tinctorius
21 May
15 Jun
0 wk
25 May
5 Jun
1 wk after
Iceland poppy
Papaver nudicaule
Season too short
26 Mar – 9 Apr
24 May
6-8 wk
21 May
5 Jul
0 wk
3 May
25 Jun
3 wk before
Bishop's flower
Ammi majus
9 – 23 Apr
7 Jun
4-6 wk
21 May
5 Jul
0 wk
11 Jun
25 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
21 May
6-8 wk
27 May
2 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
20 Apr
8-12 wk
21 May
15 Jun
0 wk
25 Jun
5 wk after
African marigold
Tagetes erecta
8 – 22 Apr
21 May
6-8 wk
3 Jun
2 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
10 Apr
8-10 wk
21 May
5 Jun
0 wk
25 Jun
5 wk after
Black-eyed susan vine
Thunbergia alata
13 Apr – 11 May
8 May
6-10 wk
22 Jun
5 wk after
California goldenpoppy
Eschscholzia californica
21 May
15 Jul
0 wk
25 May
5 Jul
1 wk after
Painted tongue
Salpiglossis sinuata
25 Mar – 8 Apr
1 May
8-10 wk
3 Jun
26 Jun
2 wk after
Water forget-me-not
Myosotis scorpioides
26 Mar – 9 Apr
4 May
6-8 wk
21 May
15 Jun
0 wk
11 Jun
3 wk after