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Method
Rel. frost
Last spring frost (0°C) 10 May Normal year · 20 years of data
Frost-free season 136 days 10 May – 23 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)
22 Mar – 5 Apr
20 Jun
5-7 wk
10 May
25 Jul
0 wk
4 May
15 Jul
1 wk before
Broccoli
Brassica oleracea (Italica-gruppen)
29 Mar – 12 Apr
2 Jul
4-6 wk
10 May
30 Jul
0 wk
4 May
20 Jul
1 wk before
Chili pepper
Capsicum annuum
Fleece
7 Mar – 4 Apr
11 Apr
8-12 wk
30 May
6 Jun
3 wk after
Curly Kale
Brassica oleracea (Curly Kale-gruppen)
22 Mar – 5 Apr
15 Jun
5-7 wk
10 May
20 Jul
0 wk
27 Apr
10 Jul
2 wk before
Garden cucumber
Cucumis sativus
18 – 25 May
5 Jun
3-4 wk
15 Jun
26 Jun
5 wk after
Florence Fennel
Foeniculum vulgare
11 – 18 May
4 Jun
4-5 wk
15 Jun
2 Jul
5 wk after
20 Jun
22 Jun
6 wk after
Butter bean
Phaseolus lunatus
Greenhouse
23 – 30 May
30 May
3-4 wk
20 Jun
20 Jun
6 wk after
Onion
Allium cepa (Cepa-gruppen)
15 Feb – 15 Mar
5 Apr
8-12 wk
10 May
31 May
0 wk
23 May
2 wk after
Onion (sets)
Allium cepa (Cepa-gruppen)
4 May
20 Jun
1 wk before
4 May
10 Jun
1 wk before
Maize
Zea mays
2 – 9 May
26 May
3-4 wk
30 May
16 Jun
3 wk after
Swiss Chard
Beta vulgaris (Flavescens-gruppen)
17 – 24 Apr
9 Jul
3-4 wk
15 May
30 Jul
1 wk after
23 May
20 Jul
2 wk after
Carrot
Daucus carota subsp. sativus var. sativus
10 May
10 Jul
0 wk
27 Apr
30 Jun
2 wk before
Palm Kale
Brassica oleracea (Palm Kale-gruppen)
22 Mar – 5 Apr
15 Jun
5-7 wk
10 May
20 Jul
0 wk
27 Apr
10 Jul
2 wk before
Potato
Solanum tuberosum
3 – 17 Apr
9 Jun
4-6 wk
15 May
7 Jul
1 wk after
15 May
27 Jun
1 wk after
Ornamental Kale
Brassica oleracea (Ornamental-gruppen)
22 Mar – 5 Apr
25 Jun
5-7 wk
10 May
30 Jul
0 wk
4 May
20 Jul
1 wk before
Pumpkin
Cucurbita pepo
18 – 25 May
18 Jun
3-4 wk
15 Jun
9 Jul
5 wk after
Beetroot
Beta vulgaris (Conditiva-gruppen)
17 – 24 Apr
19 Jun
3-4 wk
15 May
10 Jul
1 wk after
23 May
30 Jun
2 wk after
Red Cabbage
Brassica oleracea (Red Cabbage-gruppen)
29 Mar – 12 Apr
27 Jun
4-6 wk
10 May
25 Jul
0 wk
Lettuce
Lactuca sativa
12 – 19 Apr
14 Jul
3-4 wk
10 May
4 Aug
0 wk
4 May
25 Jul
1 wk before
Savoy Cabbage
Brassica oleracea (Savoy Cabbage-gruppen)
29 Mar – 12 Apr
27 Jun
4-6 wk
10 May
25 Jul
0 wk
Shallot (bulbs)
Allium cepa (Aggregatum-gruppen)
30 Mar – 13 Apr
6 Jun
2-4 wk
27 Apr
20 Jun
2 wk before
27 Apr
10 Jun
2 wk before
Shallot (sets)
Allium cepa (Aggregatum-gruppen)
4 May
20 Jun
1 wk before
4 May
10 Jun
1 wk before
Spinach
Spinacia oleracea
12 – 19 Apr
29 Jul
3-4 wk
10 May
19 Aug
0 wk
20 Apr
9 Aug
3 wk before
Sweet potato
Ipomoea batatas
11 – 25 Jun
4-6 wk
23 Jul
11 wk after
Garden tomato
Solanum lycopersicum
4 – 18 Apr
5 May
6-8 wk
30 May
16 Jun
3 wk after
Tomatillo
Physalis ixocarpa
Common Bean
Phaseolus vulgaris
2 – 16 May
20 Jun
2-4 wk
30 May
4 Jul
3 wk after
20 Jun
24 Jun
6 wk after
White Cabbage
Brassica oleracea (White Cabbage-gruppen)
29 Mar – 12 Apr
27 Jun
4-6 wk
10 May
25 Jul
0 wk
Garden pea
Pisum sativum
12 – 19 Apr
29 Jun
3-4 wk
10 May
20 Jul
0 wk
4 May
10 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
4 – 18 May
27 May
4-6 wk
15 Jun
24 Jun
5 wk after
Lemon balm
Melissa officinalis
1 – 15 Mar
25 May
8-10 wk
10 May
20 Jul
0 wk
5 Jun
10 Jul
4 wk after
Dill
Anethum graveolens
4 May
30 Jul
1 wk before
Wild chives
Allium schoenoprasum
15 – 29 Mar
8 Jun
6-8 wk
10 May
20 Jul
0 wk
4 May
10 Jul
1 wk before
Spearmint
Mentha spicata
15 Feb – 15 Mar
25 May
8-12 wk
10 May
20 Jul
0 wk
5 Jun
10 Jul
4 wk after
Coriander
Coriandrum sativum
10 May
19 Aug
0 wk
23 May
9 Aug
2 wk after
Garden sage
Salvia officinalis
6 – 20 Mar
10 May
8-10 wk
15 May
5 Jul
1 wk after
Common thyme
Thymus vulgaris
1 – 15 Mar
15 May
8-10 wk
10 May
10 Jul
0 wk
Oregano
Origanum vulgare
15 – 29 Mar
29 May
6-8 wk
10 May
10 Jul
0 wk
5 Jun
30 Jun
4 wk after
Parsley
Petroselinum crispum
15 – 29 Mar
29 May
6-8 wk
10 May
10 Jul
0 wk
4 May
30 Jun
1 wk before
Rosemary
Salvia rosmarinus
6 Feb – 6 Mar
8 Apr
10-14 wk
15 May
17 Jun
1 wk after

Annual flowers

Plant Sow indoors Transplant Direct sow
Earliest Latest Growing time Earliest Latest Rel. frost Earliest Latest Rel. frost
Morning glory
Ipomoea tricolor
18 – 25 May
3 Jun
3-4 wk
15 Jun
24 Jun
5 wk after
Cornflower
Centaurea cyanus
10 May
20 Jul
0 wk
4 May
10 Jul
1 wk before
Statice
Limonium sinuatum
21 Mar – 4 Apr
8 May
8-10 wk
30 May
3 Jul
3 wk after
Sweet William
Dianthus barbatus
15 – 29 Mar
6-8 wk
10 May
0 wk
15 May
1 wk after
Snow-on-the-mountain
Euphorbia marginata
4 – 18 Apr
22 May
6-8 wk
30 May
3 Jul
3 wk after
23 Jul
11 wk after
Pinnate dahlia
Dahlia × pinnata
28 Mar – 11 Apr
29 May
6-8 wk
23 May
10 Jul
2 wk after
Pinnate dahlia (tubers)
Dahlia × pinnata
10 Apr – 8 May
12 Jun
4-8 wk
5 Jun
10 Jul
4 wk after
5 Jun
30 Jun
4 wk after
Foxglove
Digitalis purpurea
1 – 15 Mar
8-10 wk
10 May
0 wk
23 May
2 wk after
Busy lizzie
Impatiens walleriana
23 Mar – 20 Apr
30 Jun
8-12 wk
15 Jun
25 Aug
5 wk after
Creeping zinnia
Sanvitalia procumbens
4 – 18 Apr
1 Jun
6-8 wk
30 May
13 Jul
3 wk after
Hyacinth bean
Dolichos lablab
Greenhouse
18 Apr – 2 May
13 May
4-6 wk
30 May
10 Jun
3 wk after
Chinese lantern
Physalis alkekengi
6 – 20 Mar
25 Apr
8-10 wk
15 May
20 Jun
1 wk after
Love in a mist
Nigella damascena
10 May
5 Jul
0 wk
4 May
25 Jun
1 wk before
Strawflower
Xerochrysum bracteatum
4 – 18 Apr
12 May
6-8 wk
30 May
23 Jun
3 wk after
23 Jul
11 wk after
Purple-top vervain
Verbena bonariensis
20 Feb – 20 Mar
25 Apr
8-12 wk
15 May
20 Jun
1 wk after
Cardoon
Cynara cardunculus
7 Mar – 4 Apr
26 Mar
8-12 wk
30 May
3 wk after
Regal-foxtail
Ptilotus nobilis
23 Mar – 20 Apr
19 Apr
8-12 wk
15 Jun
5 wk after
Globe amaranth
Gomphrena globosa
20 Apr – 4 May
3 May
6-8 wk
15 Jun
5 wk after
Corn poppy
Papaver rhoeas
10 May
20 Jul
0 wk
4 May
10 Jul
1 wk before
Snapdragon
Antirrhinum majus
15 Feb – 15 Mar
15 May
8-12 wk
10 May
10 Jul
0 wk
15 May
30 Jun
1 wk after
Flossflower
Ageratum houstonianum
6 – 20 Apr
18 May
8-10 wk
15 Jun
13 Jul
5 wk after
Sweet pea
Lathyrus odoratus
15 Mar – 5 Apr
5 Jun
5-8 wk
10 May
10 Jul
0 wk
Stock
Matthiola incana
15 – 29 Mar
8 Jun
6-8 wk
10 May
20 Jul
0 wk
23 May
10 Jul
2 wk after
Wormwood
Artemisia absinthium
15 – 29 Mar
9 May
6-8 wk
10 May
20 Jun
0 wk
23 May
10 Jun
2 wk after
Mexican sunflower
Tithonia rotundifolia
4 – 18 May
12 May
4-6 wk
15 Jun
5 wk after
Garden pansy
Viola × wittrockiana
1 – 15 Mar
25 May
8-10 wk
10 May
20 Jul
0 wk
15 May
10 Jul
1 wk after
Petunia
Petunia
7 Mar – 4 Apr
8 May
8-12 wk
30 May
3 Jul
3 wk after
Sweet Scabious
Scabiosa atropurpurea
20 Mar – 3 Apr
9 May
6-8 wk
15 May
20 Jun
1 wk after
20 Jun
6 wk after
Common zinnia
Zinnia elegans
18 Apr – 2 May
12 Jun
4-6 wk
30 May
10 Jul
3 wk after
Common morning glory
Ipomoea purpurea
11 – 25 May
3 Jun
3-5 wk
15 Jun
24 Jun
5 wk after
Garden cosmos
Cosmos bipinnatus
18 Apr – 2 May
12 Jun
4-6 wk
30 May
10 Jul
3 wk after
20 Jun
30 Jun
6 wk after
Scarlet milkweed
Asclepias curassavica
30 Mar – 27 Apr
19 May
8-12 wk
22 Jun
14 Jul
6 wk after
Bee balm
Monarda didyma
15 Feb – 15 Mar
25 Apr
8-12 wk
10 May
20 Jun
0 wk
5 Jun
10 Jun
4 wk after
Yarrow
Achillea millefolium
15 – 29 Mar
9 Apr
6-8 wk
10 May
21 May
0 wk
23 May
2 wk after
Safflower
Carthamus tinctorius
10 May
20 Jun
0 wk
4 May
10 Jun
1 wk before
Iceland poppy
Papaver nudicaule
Season too short
15 – 29 Mar
29 May
6-8 wk
10 May
10 Jul
0 wk
25 Mar
30 Jun
7 wk before
Bishop's flower
Ammi majus
29 Mar – 12 Apr
12 Jun
4-6 wk
10 May
10 Jul
0 wk
23 May
30 Jun
2 wk after
Drumsticks
Pycnosorus globosus
23 Mar – 6 Apr
1 Apr
10-12 wk
15 Jun
5 wk after
Sunflower
Helianthus annuus
2 – 9 May
16 Jun
3-4 wk
30 May
7 Jul
3 wk after
5 Jun
27 Jun
4 wk after
China aster
Callistephus chinensis
4 – 18 Apr
5 Jun
6-8 wk
30 May
17 Jul
3 wk after
20 Jun
7 Jul
6 wk after
Annual phlox
Phlox drummondii
25 Mar – 8 Apr
1 Jun
6-8 wk
20 May
13 Jul
1 wk after
20 Jun
3 Jul
6 wk after
Hollyhock
Alcea rosea
15 – 29 Mar
6-8 wk
10 May
0 wk
23 May
2 wk after
Alpine delphinium
Delphinium elatum
15 Feb – 15 Mar
25 Apr
8-12 wk
10 May
20 Jun
0 wk
5 Jun
10 Jun
4 wk after
African marigold
Tagetes erecta
4 – 18 Apr
1 Jun
6-8 wk
30 May
13 Jul
3 wk after
Black-eyed Susan
Rudbeckia hirta
20 Mar – 3 Apr
26 May
6-8 wk
15 May
7 Jul
1 wk after
20 Jun
27 Jun
6 wk after
Wood sage
Salvia nemorosa
1 – 15 Mar
15 Apr
8-10 wk
10 May
10 Jun
0 wk
5 Jun
4 wk after
Black-eyed susan vine
Thunbergia alata
6 Apr – 4 May
13 May
6-10 wk
15 Jun
24 Jun
5 wk after
California goldenpoppy
Eschscholzia californica
10 May
20 Jul
0 wk
4 May
10 Jul
1 wk before
Painted tongue
Salpiglossis sinuata
21 Mar – 4 Apr
7 May
8-10 wk
30 May
2 Jul
3 wk after
Water forget-me-not
Myosotis scorpioides
15 – 29 Mar
9 May
6-8 wk
10 May
20 Jun
0 wk
23 May
10 Jun
2 wk after