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Method
Rel. frost
Last spring frost (0°C) 13 May Normal year · 20 years of data
Frost-free season 135 days 13 May – 25 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)
25 Mar – 8 Apr
16 Jun
5-7 wk
13 May
21 Jul
0 wk
17 May
11 Jul
1 wk after
Broccoli
Brassica oleracea (Italica-gruppen)
1 – 15 Apr
28 Jun
4-6 wk
13 May
26 Jul
0 wk
17 May
16 Jul
1 wk after
Chili pepper
Capsicum annuum
Greenhouse
28 Feb – 28 Mar
18 Apr
8-12 wk
23 May
13 Jun
1 wk after
Curly Kale
Brassica oleracea (Curly Kale-gruppen)
25 Mar – 8 Apr
11 Jun
5-7 wk
13 May
16 Jul
0 wk
13 May
6 Jul
0 wk
Garden cucumber
Cucumis sativus
21 – 28 May
21 May
3-4 wk
18 Jun
5 wk after
Florence Fennel
Foeniculum vulgare
14 – 21 May
29 May
4-5 wk
18 Jun
26 Jun
5 wk after
1 Jul
7 wk after
Butter bean
Phaseolus lunatus
Season too short
26 May – 2 Jun
3-4 wk
23 Jun
6 wk after
Onion
Allium cepa (Cepa-gruppen)
18 Feb – 18 Mar
1 Apr
8-12 wk
13 May
27 May
0 wk
3 Jun
3 wk after
Onion (sets)
Allium cepa (Cepa-gruppen)
17 May
16 Jun
1 wk after
17 May
6 Jun
1 wk after
Maize
Zea mays
5 – 12 May
11 May
3-4 wk
2 Jun
3 wk after
Swiss Chard
Beta vulgaris (Flavescens-gruppen)
20 – 27 Apr
5 Jul
3-4 wk
18 May
26 Jul
1 wk after
3 Jun
16 Jul
3 wk after
Carrot
Daucus carota subsp. sativus var. sativus
13 May
6 Jul
0 wk
13 May
26 Jun
0 wk
Palm Kale
Brassica oleracea (Palm Kale-gruppen)
25 Mar – 8 Apr
11 Jun
5-7 wk
13 May
16 Jul
0 wk
13 May
6 Jul
0 wk
Potato
Solanum tuberosum
17 Apr – 1 May
28 May
4-6 wk
29 May
25 Jun
2 wk after
29 May
15 Jun
2 wk after
Ornamental Kale
Brassica oleracea (Ornamental-gruppen)
25 Mar – 8 Apr
21 Jun
5-7 wk
13 May
26 Jul
0 wk
17 May
16 Jul
1 wk after
Pumpkin
Cucurbita pepo
21 – 28 May
17 Jun
3-4 wk
18 Jun
8 Jul
5 wk after
Beetroot
Beta vulgaris (Conditiva-gruppen)
20 – 27 Apr
11 Jun
3-4 wk
18 May
2 Jul
1 wk after
3 Jun
22 Jun
3 wk after
Red Cabbage
Brassica oleracea (Red Cabbage-gruppen)
1 – 15 Apr
23 Jun
4-6 wk
13 May
21 Jul
0 wk
Lettuce
Lactuca sativa
15 – 22 Apr
10 Jul
3-4 wk
13 May
31 Jul
0 wk
17 May
21 Jul
1 wk after
Savoy Cabbage
Brassica oleracea (Savoy Cabbage-gruppen)
1 – 15 Apr
23 Jun
4-6 wk
13 May
21 Jul
0 wk
Shallot (bulbs)
Allium cepa (Aggregatum-gruppen)
15 – 29 Apr
2 Jun
2-4 wk
13 May
16 Jun
0 wk
13 May
6 Jun
0 wk
Shallot (sets)
Allium cepa (Aggregatum-gruppen)
17 May
16 Jun
1 wk after
17 May
6 Jun
1 wk after
Spinach
Spinacia oleracea
15 – 22 Apr
25 Jul
3-4 wk
13 May
15 Aug
0 wk
9 May
5 Aug
1 wk before
Sweet potato
Ipomoea batatas
14 – 28 Jun
4-6 wk
26 Jul
11 wk after
Garden tomato
Solanum lycopersicum
7 – 21 Apr
20 Apr
6-8 wk
2 Jun
3 wk after
Tomatillo
Physalis ixocarpa
Common Bean
Phaseolus vulgaris
5 – 19 May
19 Jun
2-4 wk
2 Jun
3 Jul
3 wk after
1 Jul
7 wk after
White Cabbage
Brassica oleracea (White Cabbage-gruppen)
1 – 15 Apr
23 Jun
4-6 wk
13 May
21 Jul
0 wk
Garden pea
Pisum sativum
15 – 22 Apr
25 Jun
3-4 wk
13 May
16 Jul
0 wk
17 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
7 – 21 May
26 May
4-6 wk
18 Jun
23 Jun
5 wk after
Lemon balm
Melissa officinalis
4 – 18 Mar
21 May
8-10 wk
13 May
16 Jul
0 wk
17 Jun
6 Jul
5 wk after
Dill
Anethum graveolens
17 May
26 Jul
1 wk after
Wild chives
Allium schoenoprasum
18 Mar – 1 Apr
4 Jun
6-8 wk
13 May
16 Jul
0 wk
17 May
6 Jul
1 wk after
Spearmint
Mentha spicata
18 Feb – 18 Mar
21 May
8-12 wk
13 May
16 Jul
0 wk
17 Jun
6 Jul
5 wk after
Coriander
Coriandrum sativum
13 May
15 Aug
0 wk
3 Jun
5 Aug
3 wk after
Garden sage
Salvia officinalis
9 – 23 Mar
6 May
8-10 wk
18 May
1 Jul
1 wk after
Common thyme
Thymus vulgaris
4 – 18 Mar
11 May
8-10 wk
13 May
6 Jul
0 wk
Oregano
Origanum vulgare
18 Mar – 1 Apr
25 May
6-8 wk
13 May
6 Jul
0 wk
17 Jun
26 Jun
5 wk after
Parsley
Petroselinum crispum
18 Mar – 1 Apr
25 May
6-8 wk
13 May
6 Jul
0 wk
17 May
26 Jun
1 wk after
Rosemary
Salvia rosmarinus
9 Feb – 9 Mar
4 Apr
10-14 wk
18 May
13 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
21 – 28 May
2 Jun
3-4 wk
18 Jun
23 Jun
5 wk after
Cornflower
Centaurea cyanus
13 May
16 Jul
0 wk
17 May
6 Jul
1 wk after
Statice
Limonium sinuatum
24 Mar – 7 Apr
2 May
8-10 wk
2 Jun
27 Jun
3 wk after
Sweet William
Dianthus barbatus
18 Mar – 1 Apr
6-8 wk
13 May
0 wk
29 May
2 wk after
Snow-on-the-mountain
Euphorbia marginata
7 – 21 Apr
16 May
6-8 wk
2 Jun
27 Jun
3 wk after
26 Jul
11 wk after
Pinnate dahlia
Dahlia × pinnata
31 Mar – 14 Apr
18 May
6-8 wk
26 May
29 Jun
2 wk after
Pinnate dahlia (tubers)
Dahlia × pinnata
22 Apr – 20 May
1 Jun
4-8 wk
17 Jun
29 Jun
5 wk after
17 Jun
19 Jun
5 wk after
Foxglove
Digitalis purpurea
4 – 18 Mar
8-10 wk
13 May
0 wk
3 Jun
3 wk after
Busy lizzie
Impatiens walleriana
26 Mar – 23 Apr
18 Jun
8-12 wk
18 Jun
13 Aug
5 wk after
Creeping zinnia
Sanvitalia procumbens
7 – 21 Apr
26 May
6-8 wk
2 Jun
7 Jul
3 wk after
Hyacinth bean
Dolichos lablab
Season too short
21 Apr – 5 May
1 May
4-6 wk
2 Jun
3 wk after
Chinese lantern
Physalis alkekengi
9 – 23 Mar
21 Apr
8-10 wk
18 May
16 Jun
1 wk after
Love in a mist
Nigella damascena
13 May
1 Jul
0 wk
17 May
21 Jun
1 wk after
Strawflower
Xerochrysum bracteatum
7 – 21 Apr
6 May
6-8 wk
2 Jun
17 Jun
3 wk after
26 Jul
11 wk after
Purple-top vervain
Verbena bonariensis
23 Feb – 23 Mar
21 Apr
8-12 wk
18 May
16 Jun
1 wk after
Cardoon
Cynara cardunculus
Fleece
28 Feb – 28 Mar
22 Mar
8-12 wk
23 May
1 wk after
Regal-foxtail
Ptilotus nobilis
26 Mar – 23 Apr
18 Apr
8-12 wk
18 Jun
5 wk after
Globe amaranth
Gomphrena globosa
23 Apr – 7 May
2 May
6-8 wk
18 Jun
5 wk after
Corn poppy
Papaver rhoeas
13 May
16 Jul
0 wk
17 May
6 Jul
1 wk after
Snapdragon
Antirrhinum majus
18 Feb – 18 Mar
11 May
8-12 wk
13 May
6 Jul
0 wk
29 May
26 Jun
2 wk after
Flossflower
Ageratum houstonianum
9 – 23 Apr
12 May
8-10 wk
18 Jun
7 Jul
5 wk after
Sweet pea
Lathyrus odoratus
18 Mar – 8 Apr
1 Jun
5-8 wk
13 May
6 Jul
0 wk
Stock
Matthiola incana
18 Mar – 1 Apr
4 Jun
6-8 wk
13 May
16 Jul
0 wk
3 Jun
6 Jul
3 wk after
Wormwood
Artemisia absinthium
18 Mar – 1 Apr
5 May
6-8 wk
13 May
16 Jun
0 wk
3 Jun
6 Jun
3 wk after
Mexican sunflower
Tithonia rotundifolia
7 – 21 May
11 May
4-6 wk
18 Jun
5 wk after
Garden pansy
Viola × wittrockiana
4 – 18 Mar
21 May
8-10 wk
13 May
16 Jul
0 wk
29 May
6 Jul
2 wk after
Petunia
Petunia
10 Mar – 7 Apr
2 May
8-12 wk
2 Jun
27 Jun
3 wk after
Sweet Scabious
Scabiosa atropurpurea
23 Mar – 6 Apr
5 May
6-8 wk
18 May
16 Jun
1 wk after
1 Jul
7 wk after
Common zinnia
Zinnia elegans
21 Apr – 5 May
31 May
4-6 wk
2 Jun
28 Jun
3 wk after
Common morning glory
Ipomoea purpurea
14 – 28 May
2 Jun
3-5 wk
18 Jun
23 Jun
5 wk after
Garden cosmos
Cosmos bipinnatus
21 Apr – 5 May
1 Jun
4-6 wk
2 Jun
29 Jun
3 wk after
1 Jul
7 wk after
Scarlet milkweed
Asclepias curassavica
2 – 30 Apr
18 May
8-12 wk
25 Jun
13 Jul
6 wk after
Bee balm
Monarda didyma
18 Feb – 18 Mar
21 Apr
8-12 wk
13 May
16 Jun
0 wk
17 Jun
5 wk after
Yarrow
Achillea millefolium
18 Mar – 1 Apr
5 Apr
6-8 wk
13 May
17 May
0 wk
3 Jun
3 wk after
Safflower
Carthamus tinctorius
13 May
16 Jun
0 wk
17 May
6 Jun
1 wk after
Iceland poppy
Papaver nudicaule
Season too short
18 Mar – 1 Apr
25 May
6-8 wk
13 May
6 Jul
0 wk
25 Apr
26 Jun
3 wk before
Bishop's flower
Ammi majus
1 – 15 Apr
8 Jun
4-6 wk
13 May
6 Jul
0 wk
3 Jun
26 Jun
3 wk after
Drumsticks
Pycnosorus globosus
Fleece
10 – 24 Mar
31 Mar
10-12 wk
2 Jun
9 Jun
3 wk after
Sunflower
Helianthus annuus
5 – 12 May
12 Jun
3-4 wk
2 Jun
3 Jul
3 wk after
17 Jun
23 Jun
5 wk after
China aster
Callistephus chinensis
7 – 21 Apr
1 Jun
6-8 wk
2 Jun
13 Jul
3 wk after
1 Jul
3 Jul
7 wk after
Annual phlox
Phlox drummondii
28 Mar – 11 Apr
26 May
6-8 wk
23 May
7 Jul
1 wk after
1 Jul
7 wk after
Hollyhock
Alcea rosea
18 Mar – 1 Apr
6-8 wk
13 May
0 wk
3 Jun
3 wk after
Alpine delphinium
Delphinium elatum
18 Feb – 18 Mar
21 Apr
8-12 wk
13 May
16 Jun
0 wk
17 Jun
5 wk after
African marigold
Tagetes erecta
7 – 21 Apr
26 May
6-8 wk
2 Jun
7 Jul
3 wk after
Black-eyed Susan
Rudbeckia hirta
23 Mar – 6 Apr
22 May
6-8 wk
18 May
3 Jul
1 wk after
1 Jul
7 wk after
Wood sage
Salvia nemorosa
4 – 18 Mar
11 Apr
8-10 wk
13 May
6 Jun
0 wk
17 Jun
5 wk after
Black-eyed susan vine
Thunbergia alata
9 Apr – 7 May
12 May
6-10 wk
18 Jun
23 Jun
5 wk after
California goldenpoppy
Eschscholzia californica
13 May
16 Jul
0 wk
17 May
6 Jul
1 wk after
Painted tongue
Salpiglossis sinuata
24 Mar – 7 Apr
1 May
8-10 wk
2 Jun
26 Jun
3 wk after
Water forget-me-not
Myosotis scorpioides
18 Mar – 1 Apr
5 May
6-8 wk
13 May
16 Jun
0 wk
3 Jun
6 Jun
3 wk after