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