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Method
Rel. frost
Last spring frost (0°C) 15 May Normal year · 20 years of data
Frost-free season 136 days 15 May – 28 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
14 Jun
5-7 wk
15 May
19 Jul
0 wk
19 May
9 Jul
1 wk after
Broccoli
Brassica oleracea (Italica-gruppen)
3 – 17 Apr
26 Jun
4-6 wk
15 May
24 Jul
0 wk
19 May
14 Jul
1 wk after
Chili pepper
Capsicum annuum
Greenhouse
26 Feb – 26 Mar
16 Apr
8-12 wk
21 May
11 Jun
1 wk after
Curly Kale
Brassica oleracea (Curly Kale-gruppen)
27 Mar – 10 Apr
9 Jun
5-7 wk
15 May
14 Jul
0 wk
15 May
4 Jul
0 wk
Garden cucumber
Cucumis sativus
19 – 26 May
25 May
3-4 wk
16 Jun
5 wk after
Florence Fennel
Foeniculum vulgare
12 – 19 May
27 May
4-5 wk
16 Jun
24 Jun
5 wk after
3 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)
20 Feb – 20 Mar
30 Mar
8-12 wk
15 May
25 May
0 wk
5 Jun
3 wk after
Onion (sets)
Allium cepa (Cepa-gruppen)
19 May
14 Jun
1 wk after
19 May
4 Jun
1 wk after
Maize
Zea mays
30 Apr – 7 May
15 May
3-4 wk
28 May
5 Jun
2 wk after
Swiss Chard
Beta vulgaris (Flavescens-gruppen)
19 – 26 Apr
3 Jul
3-4 wk
17 May
24 Jul
0 wk
5 Jun
14 Jul
3 wk after
Carrot
Daucus carota subsp. sativus var. sativus
15 May
4 Jul
0 wk
15 May
24 Jun
0 wk
Palm Kale
Brassica oleracea (Palm Kale-gruppen)
27 Mar – 10 Apr
9 Jun
5-7 wk
15 May
14 Jul
0 wk
15 May
4 Jul
0 wk
Potato
Solanum tuberosum
19 Apr – 3 May
29 May
4-6 wk
31 May
26 Jun
2 wk after
31 May
16 Jun
2 wk after
Ornamental Kale
Brassica oleracea (Ornamental-gruppen)
27 Mar – 10 Apr
19 Jun
5-7 wk
15 May
24 Jul
0 wk
19 May
14 Jul
1 wk after
Pumpkin
Cucurbita pepo
19 – 26 May
15 Jun
3-4 wk
16 Jun
6 Jul
5 wk after
Beetroot
Beta vulgaris (Conditiva-gruppen)
19 – 26 Apr
12 Jun
3-4 wk
17 May
3 Jul
0 wk
5 Jun
23 Jun
3 wk after
Red Cabbage
Brassica oleracea (Red Cabbage-gruppen)
3 – 17 Apr
21 Jun
4-6 wk
15 May
19 Jul
0 wk
Lettuce
Lactuca sativa
17 – 24 Apr
8 Jul
3-4 wk
15 May
29 Jul
0 wk
19 May
19 Jul
1 wk after
Savoy Cabbage
Brassica oleracea (Savoy Cabbage-gruppen)
3 – 17 Apr
21 Jun
4-6 wk
15 May
19 Jul
0 wk
Shallot (bulbs)
Allium cepa (Aggregatum-gruppen)
17 Apr – 1 May
31 May
2-4 wk
15 May
14 Jun
0 wk
15 May
4 Jun
0 wk
Shallot (sets)
Allium cepa (Aggregatum-gruppen)
19 May
14 Jun
1 wk after
19 May
4 Jun
1 wk after
Spinach
Spinacia oleracea
17 – 24 Apr
23 Jul
3-4 wk
15 May
13 Aug
0 wk
11 May
3 Aug
1 wk before
Sweet potato
Ipomoea batatas
16 – 30 Jun
4-6 wk
28 Jul
11 wk after
Garden tomato
Solanum lycopersicum
2 – 16 Apr
24 Apr
6-8 wk
28 May
5 Jun
2 wk after
Tomatillo
Physalis ixocarpa
Common Bean
Phaseolus vulgaris
30 Apr – 14 May
17 Jun
2-4 wk
28 May
1 Jul
2 wk after
3 Jul
7 wk after
White Cabbage
Brassica oleracea (White Cabbage-gruppen)
3 – 17 Apr
21 Jun
4-6 wk
15 May
19 Jul
0 wk
Garden pea
Pisum sativum
17 – 24 Apr
23 Jun
3-4 wk
15 May
14 Jul
0 wk
19 May
4 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
5 – 19 May
24 May
4-6 wk
16 Jun
21 Jun
5 wk after
Lemon balm
Melissa officinalis
6 – 20 Mar
19 May
8-10 wk
15 May
14 Jul
0 wk
19 Jun
4 Jul
5 wk after
Dill
Anethum graveolens
19 May
24 Jul
1 wk after
Wild chives
Allium schoenoprasum
20 Mar – 3 Apr
2 Jun
6-8 wk
15 May
14 Jul
0 wk
19 May
4 Jul
1 wk after
Spearmint
Mentha spicata
20 Feb – 20 Mar
19 May
8-12 wk
15 May
14 Jul
0 wk
19 Jun
4 Jul
5 wk after
Coriander
Coriandrum sativum
15 May
13 Aug
0 wk
5 Jun
3 Aug
3 wk after
Garden sage
Salvia officinalis
8 – 22 Mar
4 May
8-10 wk
17 May
29 Jun
0 wk
Common thyme
Thymus vulgaris
6 – 20 Mar
9 May
8-10 wk
15 May
4 Jul
0 wk
Oregano
Origanum vulgare
20 Mar – 3 Apr
23 May
6-8 wk
15 May
4 Jul
0 wk
19 Jun
24 Jun
5 wk after
Parsley
Petroselinum crispum
20 Mar – 3 Apr
23 May
6-8 wk
15 May
4 Jul
0 wk
19 May
24 Jun
1 wk after
Rosemary
Salvia rosmarinus
8 Feb – 8 Mar
1 Apr
10-14 wk
17 May
10 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
19 – 26 May
31 May
3-4 wk
16 Jun
21 Jun
5 wk after
Cornflower
Centaurea cyanus
15 May
14 Jul
0 wk
19 May
4 Jul
1 wk after
Statice
Limonium sinuatum
19 Mar – 2 Apr
28 Apr
8-10 wk
28 May
23 Jun
2 wk after
Sweet William
Dianthus barbatus
20 Mar – 3 Apr
6-8 wk
15 May
0 wk
31 May
2 wk after
Snow-on-the-mountain
Euphorbia marginata
2 – 16 Apr
12 May
6-8 wk
28 May
23 Jun
2 wk after
28 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
24 Apr – 22 May
1 Jun
4-8 wk
19 Jun
29 Jun
5 wk after
19 Jun
19 Jun
5 wk after
Foxglove
Digitalis purpurea
6 – 20 Mar
8-10 wk
15 May
0 wk
5 Jun
3 wk after
Busy lizzie
Impatiens walleriana
24 Mar – 21 Apr
19 Jun
8-12 wk
16 Jun
14 Aug
5 wk after
Creeping zinnia
Sanvitalia procumbens
2 – 16 Apr
22 May
6-8 wk
28 May
3 Jul
2 wk after
Hyacinth bean
Dolichos lablab
Season too short
16 – 30 Apr
2 May
4-6 wk
28 May
30 May
2 wk after
Chinese lantern
Physalis alkekengi
8 – 22 Mar
19 Apr
8-10 wk
17 May
14 Jun
0 wk
Love in a mist
Nigella damascena
15 May
29 Jun
0 wk
19 May
19 Jun
1 wk after
Strawflower
Xerochrysum bracteatum
2 – 16 Apr
2 May
6-8 wk
28 May
13 Jun
2 wk after
28 Jul
11 wk after
Purple-top vervain
Verbena bonariensis
22 Feb – 22 Mar
19 Apr
8-12 wk
17 May
14 Jun
0 wk
Cardoon
Cynara cardunculus
Fleece
26 Feb – 26 Mar
20 Mar
8-12 wk
21 May
1 wk after
Regal-foxtail
Ptilotus nobilis
24 Mar – 21 Apr
16 Apr
8-12 wk
16 Jun
5 wk after
Globe amaranth
Gomphrena globosa
21 Apr – 5 May
30 Apr
6-8 wk
16 Jun
5 wk after
Corn poppy
Papaver rhoeas
15 May
14 Jul
0 wk
19 May
4 Jul
1 wk after
Snapdragon
Antirrhinum majus
20 Feb – 20 Mar
9 May
8-12 wk
15 May
4 Jul
0 wk
31 May
24 Jun
2 wk after
Flossflower
Ageratum houstonianum
7 – 21 Apr
8 May
8-10 wk
16 Jun
3 Jul
5 wk after
Sweet pea
Lathyrus odoratus
20 Mar – 10 Apr
30 May
5-8 wk
15 May
4 Jul
0 wk
Stock
Matthiola incana
20 Mar – 3 Apr
2 Jun
6-8 wk
15 May
14 Jul
0 wk
5 Jun
4 Jul
3 wk after
Wormwood
Artemisia absinthium
20 Mar – 3 Apr
3 May
6-8 wk
15 May
14 Jun
0 wk
5 Jun
3 wk after
Mexican sunflower
Tithonia rotundifolia
5 – 19 May
9 May
4-6 wk
16 Jun
5 wk after
Garden pansy
Viola × wittrockiana
6 – 20 Mar
19 May
8-10 wk
15 May
14 Jul
0 wk
31 May
4 Jul
2 wk after
Petunia
Petunia
5 Mar – 2 Apr
28 Apr
8-12 wk
28 May
23 Jun
2 wk after
Sweet Scabious
Scabiosa atropurpurea
22 Mar – 5 Apr
3 May
6-8 wk
17 May
14 Jun
0 wk
3 Jul
7 wk after
Common zinnia
Zinnia elegans
16 – 30 Apr
1 Jun
4-6 wk
28 May
29 Jun
2 wk after
Common morning glory
Ipomoea purpurea
12 – 26 May
31 May
3-5 wk
16 Jun
21 Jun
5 wk after
Garden cosmos
Cosmos bipinnatus
16 – 30 Apr
1 Jun
4-6 wk
28 May
29 Jun
2 wk after
3 Jul
7 wk after
Scarlet milkweed
Asclepias curassavica
14 Apr – 12 May
16 May
8-12 wk
7 Jul
11 Jul
8 wk after
Bee balm
Monarda didyma
20 Feb – 20 Mar
19 Apr
8-12 wk
15 May
14 Jun
0 wk
19 Jun
5 wk after
Yarrow
Achillea millefolium
20 Mar – 3 Apr
3 Apr
6-8 wk
15 May
15 May
0 wk
5 Jun
3 wk after
Safflower
Carthamus tinctorius
15 May
14 Jun
0 wk
19 May
4 Jun
1 wk after
Iceland poppy
Papaver nudicaule
Season too short
20 Mar – 3 Apr
23 May
6-8 wk
15 May
4 Jul
0 wk
27 Apr
24 Jun
3 wk before
Bishop's flower
Ammi majus
3 – 17 Apr
6 Jun
4-6 wk
15 May
4 Jul
0 wk
5 Jun
24 Jun
3 wk after
Drumsticks
Pycnosorus globosus
Fleece
5 – 19 Mar
31 Mar
10-12 wk
28 May
9 Jun
2 wk after
Sunflower
Helianthus annuus
30 Apr – 7 May
9 Jun
3-4 wk
28 May
30 Jun
2 wk after
19 Jun
20 Jun
5 wk after
China aster
Callistephus chinensis
2 – 16 Apr
29 May
6-8 wk
28 May
10 Jul
2 wk after
3 Jul
7 wk after
Annual phlox
Phlox drummondii
26 Mar – 9 Apr
22 May
6-8 wk
21 May
3 Jul
1 wk after
3 Jul
7 wk after
Hollyhock
Alcea rosea
20 Mar – 3 Apr
6-8 wk
15 May
0 wk
5 Jun
3 wk after
Alpine delphinium
Delphinium elatum
20 Feb – 20 Mar
19 Apr
8-12 wk
15 May
14 Jun
0 wk
19 Jun
5 wk after
African marigold
Tagetes erecta
2 – 16 Apr
22 May
6-8 wk
28 May
3 Jul
2 wk after
Black-eyed Susan
Rudbeckia hirta
22 Mar – 5 Apr
19 May
6-8 wk
17 May
30 Jun
0 wk
3 Jul
7 wk after
Wood sage
Salvia nemorosa
6 – 20 Mar
9 Apr
8-10 wk
15 May
4 Jun
0 wk
19 Jun
5 wk after
Black-eyed susan vine
Thunbergia alata
7 Apr – 5 May
10 May
6-10 wk
16 Jun
21 Jun
5 wk after
California goldenpoppy
Eschscholzia californica
15 May
14 Jul
0 wk
19 May
4 Jul
1 wk after
Painted tongue
Salpiglossis sinuata
19 Mar – 2 Apr
29 Apr
8-10 wk
28 May
24 Jun
2 wk after
Water forget-me-not
Myosotis scorpioides
20 Mar – 3 Apr
3 May
6-8 wk
15 May
14 Jun
0 wk
5 Jun
3 wk after