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Method
Rel. frost
Last spring frost (0°C) 15 May Normal year · 20 years of data
Frost-free season 127 days 15 May – 19 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)
27 Mar – 10 Apr
17 Jun
5-7 wk
15 May
22 Jul
0 wk
8 May
12 Jul
1 wk before
Broccoli
Brassica oleracea (Italica-gruppen)
3 – 17 Apr
29 Jun
4-6 wk
15 May
27 Jul
0 wk
8 May
17 Jul
1 wk before
Chili pepper
Capsicum annuum
Greenhouse
3 – 31 Mar
12 Apr
8-12 wk
26 May
7 Jun
2 wk after
Curly Kale
Brassica oleracea (Curly Kale-gruppen)
27 Mar – 10 Apr
12 Jun
5-7 wk
15 May
17 Jul
0 wk
3 May
7 Jul
2 wk before
Garden cucumber
Cucumis sativus
23 – 30 May
3-4 wk
20 Jun
5 wk after
Florence Fennel
Foeniculum vulgare
16 – 23 May
19 May
4-5 wk
20 Jun
5 wk after
20 Jun
5 wk after
Butter bean
Phaseolus lunatus
Season too short
30 May – 6 Jun
3-4 wk
27 Jun
6 wk after
Onion
Allium cepa (Cepa-gruppen)
20 Feb – 20 Mar
29 Mar
8-12 wk
15 May
24 May
0 wk
25 May
1 wk after
Onion (sets)
Allium cepa (Cepa-gruppen)
8 May
13 Jun
1 wk before
8 May
3 Jun
1 wk before
Maize
Zea mays
6 – 13 May
9 May
3-4 wk
3 Jun
3 wk after
Swiss Chard
Beta vulgaris (Flavescens-gruppen)
23 – 30 Apr
27 Jun
3-4 wk
21 May
18 Jul
1 wk after
25 May
8 Jul
1 wk after
Carrot
Daucus carota subsp. sativus var. sativus
15 May
7 Jul
0 wk
3 May
27 Jun
2 wk before
Palm Kale
Brassica oleracea (Palm Kale-gruppen)
27 Mar – 10 Apr
12 Jun
5-7 wk
15 May
17 Jul
0 wk
3 May
7 Jul
2 wk before
Potato
Solanum tuberosum
8 – 22 Apr
27 May
4-6 wk
20 May
24 Jun
1 wk after
20 May
14 Jun
1 wk after
Ornamental Kale
Brassica oleracea (Ornamental-gruppen)
27 Mar – 10 Apr
22 Jun
5-7 wk
15 May
27 Jul
0 wk
8 May
17 Jul
1 wk before
Pumpkin
Cucurbita pepo
23 – 30 May
11 Jun
3-4 wk
20 Jun
2 Jul
5 wk after
Beetroot
Beta vulgaris (Conditiva-gruppen)
23 – 30 Apr
8 Jun
3-4 wk
21 May
29 Jun
1 wk after
25 May
19 Jun
1 wk after
Red Cabbage
Brassica oleracea (Red Cabbage-gruppen)
3 – 17 Apr
24 Jun
4-6 wk
15 May
22 Jul
0 wk
Lettuce
Lactuca sativa
17 – 24 Apr
11 Jul
3-4 wk
15 May
1 Aug
0 wk
8 May
22 Jul
1 wk before
Savoy Cabbage
Brassica oleracea (Savoy Cabbage-gruppen)
3 – 17 Apr
24 Jun
4-6 wk
15 May
22 Jul
0 wk
Shallot (bulbs)
Allium cepa (Aggregatum-gruppen)
5 – 19 Apr
3 Jun
2-4 wk
3 May
17 Jun
2 wk before
3 May
7 Jun
2 wk before
Shallot (sets)
Allium cepa (Aggregatum-gruppen)
8 May
13 Jun
1 wk before
8 May
3 Jun
1 wk before
Spinach
Spinacia oleracea
17 – 24 Apr
26 Jul
3-4 wk
15 May
16 Aug
0 wk
27 Apr
6 Aug
3 wk before
Sweet potato
Ipomoea batatas
11 – 25 Jun
4-6 wk
23 Jul
10 wk after
Garden tomato
Solanum lycopersicum
8 – 22 Apr
18 Apr
6-8 wk
3 Jun
3 wk after
Tomatillo
Physalis ixocarpa
Common Bean
Phaseolus vulgaris
6 – 20 May
13 Jun
2-4 wk
3 Jun
27 Jun
3 wk after
20 Jun
5 wk after
White Cabbage
Brassica oleracea (White Cabbage-gruppen)
3 – 17 Apr
24 Jun
4-6 wk
15 May
22 Jul
0 wk
Garden pea
Pisum sativum
17 – 24 Apr
26 Jun
3-4 wk
15 May
17 Jul
0 wk
8 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
9 – 23 May
20 May
4-6 wk
20 Jun
5 wk after
Lemon balm
Melissa officinalis
6 – 20 Mar
22 May
8-10 wk
15 May
17 Jul
0 wk
5 Jun
7 Jul
3 wk after
Dill
Anethum graveolens
8 May
18 Jul
1 wk before
Wild chives
Allium schoenoprasum
20 Mar – 3 Apr
5 Jun
6-8 wk
15 May
17 Jul
0 wk
8 May
7 Jul
1 wk before
Spearmint
Mentha spicata
20 Feb – 20 Mar
22 May
8-12 wk
15 May
17 Jul
0 wk
5 Jun
7 Jul
3 wk after
Coriander
Coriandrum sativum
15 May
7 Aug
0 wk
25 May
28 Jul
1 wk after
Garden sage
Salvia officinalis
12 – 26 Mar
7 May
8-10 wk
21 May
2 Jul
1 wk after
Common thyme
Thymus vulgaris
6 – 20 Mar
12 May
8-10 wk
15 May
7 Jul
0 wk
Oregano
Origanum vulgare
20 Mar – 3 Apr
26 May
6-8 wk
15 May
7 Jul
0 wk
5 Jun
27 Jun
3 wk after
Parsley
Petroselinum crispum
20 Mar – 3 Apr
26 May
6-8 wk
15 May
7 Jul
0 wk
8 May
27 Jun
1 wk before
Rosemary
Salvia rosmarinus
12 Feb – 12 Mar
26 Mar
10-14 wk
21 May
4 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
23 – 30 May
27 May
3-4 wk
20 Jun
5 wk after
Cornflower
Centaurea cyanus
15 May
17 Jul
0 wk
8 May
7 Jul
1 wk before
Statice
Limonium sinuatum
25 Mar – 8 Apr
29 Apr
8-10 wk
3 Jun
24 Jun
3 wk after
Sweet William
Dianthus barbatus
20 Mar – 3 Apr
6-8 wk
15 May
0 wk
20 May
1 wk after
Snow-on-the-mountain
Euphorbia marginata
8 – 22 Apr
13 May
6-8 wk
3 Jun
24 Jun
3 wk after
23 Jul
10 wk after
Pinnate dahlia
Dahlia × pinnata
3 – 17 Apr
13 May
6-8 wk
29 May
24 Jun
2 wk after
Pinnate dahlia (tubers)
Dahlia × pinnata
10 Apr – 8 May
27 May
4-8 wk
5 Jun
24 Jun
3 wk after
5 Jun
14 Jun
3 wk after
Foxglove
Digitalis purpurea
6 – 20 Mar
8-10 wk
15 May
0 wk
25 May
1 wk after
Busy lizzie
Impatiens walleriana
28 Mar – 25 Apr
16 Jun
8-12 wk
20 Jun
11 Aug
5 wk after
Creeping zinnia
Sanvitalia procumbens
8 – 22 Apr
23 May
6-8 wk
3 Jun
4 Jul
3 wk after
Hyacinth bean
Dolichos lablab
Greenhouse
22 Apr – 6 May
29 Apr
4-6 wk
3 Jun
3 wk after
Chinese lantern
Physalis alkekengi
12 – 26 Mar
13 Apr
8-10 wk
21 May
8 Jun
1 wk after
Love in a mist
Nigella damascena
15 May
2 Jul
0 wk
8 May
22 Jun
1 wk before
Strawflower
Xerochrysum bracteatum
8 – 22 Apr
3 May
6-8 wk
3 Jun
14 Jun
3 wk after
23 Jul
10 wk after
Purple-top vervain
Verbena bonariensis
26 Feb – 26 Mar
13 Apr
8-12 wk
21 May
8 Jun
1 wk after
Cardoon
Cynara cardunculus
Fleece
3 – 31 Mar
23 Mar
8-12 wk
26 May
2 wk after
Regal-foxtail
Ptilotus nobilis
28 Mar – 25 Apr
12 Apr
8-12 wk
20 Jun
5 wk after
Globe amaranth
Gomphrena globosa
25 Apr – 9 May
26 Apr
6-8 wk
20 Jun
5 wk after
Corn poppy
Papaver rhoeas
15 May
17 Jul
0 wk
8 May
7 Jul
1 wk before
Snapdragon
Antirrhinum majus
20 Feb – 20 Mar
12 May
8-12 wk
15 May
7 Jul
0 wk
20 May
27 Jun
1 wk after
Flossflower
Ageratum houstonianum
11 – 25 Apr
9 May
8-10 wk
20 Jun
4 Jul
5 wk after
Sweet pea
Lathyrus odoratus
20 Mar – 10 Apr
2 Jun
5-8 wk
15 May
7 Jul
0 wk
Stock
Matthiola incana
20 Mar – 3 Apr
5 Jun
6-8 wk
15 May
17 Jul
0 wk
25 May
7 Jul
1 wk after
Wormwood
Artemisia absinthium
20 Mar – 3 Apr
6 May
6-8 wk
15 May
17 Jun
0 wk
25 May
7 Jun
1 wk after
Mexican sunflower
Tithonia rotundifolia
Fleece
22 Apr – 6 May
14 May
4-6 wk
3 Jun
11 Jun
3 wk after
Garden pansy
Viola × wittrockiana
6 – 20 Mar
22 May
8-10 wk
15 May
17 Jul
0 wk
20 May
7 Jul
1 wk after
Petunia
Petunia
11 Mar – 8 Apr
29 Apr
8-12 wk
3 Jun
24 Jun
3 wk after
Sweet Scabious
Scabiosa atropurpurea
26 Mar – 9 Apr
27 Apr
6-8 wk
21 May
8 Jun
1 wk after
20 Jun
5 wk after
Common zinnia
Zinnia elegans
22 Apr – 6 May
29 May
4-6 wk
3 Jun
26 Jun
3 wk after
Common morning glory
Ipomoea purpurea
16 – 30 May
27 May
3-5 wk
20 Jun
5 wk after
Garden cosmos
Cosmos bipinnatus
22 Apr – 6 May
27 May
4-6 wk
3 Jun
24 Jun
3 wk after
20 Jun
5 wk after
Scarlet milkweed
Asclepias curassavica
Fleece
28 Mar – 25 Apr
21 May
8-12 wk
20 Jun
16 Jul
5 wk after
Bee balm
Monarda didyma
20 Feb – 20 Mar
22 Apr
8-12 wk
15 May
17 Jun
0 wk
5 Jun
7 Jun
3 wk after
Yarrow
Achillea millefolium
20 Mar – 3 Apr
6 Apr
6-8 wk
15 May
18 May
0 wk
25 May
1 wk after
Safflower
Carthamus tinctorius
15 May
17 Jun
0 wk
8 May
7 Jun
1 wk before
Iceland poppy
Papaver nudicaule
Season too short
20 Mar – 3 Apr
26 May
6-8 wk
15 May
7 Jul
0 wk
6 Apr
27 Jun
6 wk before
Bishop's flower
Ammi majus
3 – 17 Apr
9 Jun
4-6 wk
15 May
7 Jul
0 wk
25 May
27 Jun
1 wk after
Drumsticks
Pycnosorus globosus
Fleece
11 – 25 Mar
26 Mar
10-12 wk
3 Jun
4 Jun
3 wk after
Sunflower
Helianthus annuus
6 – 13 May
3 Jun
3-4 wk
3 Jun
24 Jun
3 wk after
5 Jun
14 Jun
3 wk after
China aster
Callistephus chinensis
8 – 22 Apr
23 May
6-8 wk
3 Jun
4 Jul
3 wk after
20 Jun
24 Jun
5 wk after
Annual phlox
Phlox drummondii
31 Mar – 14 Apr
23 May
6-8 wk
26 May
4 Jul
2 wk after
20 Jun
24 Jun
5 wk after
Hollyhock
Alcea rosea
20 Mar – 3 Apr
6-8 wk
15 May
0 wk
25 May
1 wk after
Alpine delphinium
Delphinium elatum
20 Feb – 20 Mar
22 Apr
8-12 wk
15 May
17 Jun
0 wk
5 Jun
7 Jun
3 wk after
African marigold
Tagetes erecta
8 – 22 Apr
23 May
6-8 wk
3 Jun
4 Jul
3 wk after
Black-eyed Susan
Rudbeckia hirta
26 Mar – 9 Apr
13 May
6-8 wk
21 May
24 Jun
1 wk after
20 Jun
5 wk after
Wood sage
Salvia nemorosa
6 – 20 Mar
12 Apr
8-10 wk
15 May
7 Jun
0 wk
5 Jun
3 wk after
Black-eyed susan vine
Thunbergia alata
11 Apr – 9 May
6 May
6-10 wk
20 Jun
5 wk after
California goldenpoppy
Eschscholzia californica
15 May
16 Jul
0 wk
8 May
6 Jul
1 wk before
Painted tongue
Salpiglossis sinuata
25 Mar – 8 Apr
21 Apr
8-10 wk
3 Jun
16 Jun
3 wk after
Water forget-me-not
Myosotis scorpioides
20 Mar – 3 Apr
6 May
6-8 wk
15 May
17 Jun
0 wk
25 May
7 Jun
1 wk after