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Method
Rel. frost
Last spring frost (0°C) 15 May Normal year · 20 years of data
Frost-free season 137 days 15 May – 29 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
16 Jun
5-7 wk
15 May
21 Jul
0 wk
19 May
11 Jul
1 wk after
Broccoli
Brassica oleracea (Italica-gruppen)
3 – 17 Apr
28 Jun
4-6 wk
15 May
26 Jul
0 wk
19 May
16 Jul
1 wk after
Chili pepper
Capsicum annuum
Fleece
5 Mar – 2 Apr
25 Mar
8-12 wk
28 May
2 wk after
Curly Kale
Brassica oleracea (Curly Kale-gruppen)
27 Mar – 10 Apr
11 Jun
5-7 wk
15 May
16 Jul
0 wk
15 May
6 Jul
0 wk
Garden cucumber
Cucumis sativus
19 – 26 May
19 May
3-4 wk
16 Jun
5 wk after
Florence Fennel
Foeniculum vulgare
12 – 19 May
1 Jun
4-5 wk
16 Jun
29 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
1 Apr
8-12 wk
15 May
27 May
0 wk
5 Jun
3 wk after
Onion (sets)
Allium cepa (Cepa-gruppen)
19 May
16 Jun
1 wk after
19 May
6 Jun
1 wk after
Maize
Zea mays
30 Apr – 7 May
9 May
3-4 wk
28 May
30 May
2 wk after
Swiss Chard
Beta vulgaris (Flavescens-gruppen)
19 – 26 Apr
5 Jul
3-4 wk
17 May
26 Jul
0 wk
5 Jun
16 Jul
3 wk after
Carrot
Daucus carota subsp. sativus var. sativus
15 May
6 Jul
0 wk
15 May
26 Jun
0 wk
Palm Kale
Brassica oleracea (Palm Kale-gruppen)
27 Mar – 10 Apr
11 Jun
5-7 wk
15 May
16 Jul
0 wk
15 May
6 Jul
0 wk
Potato
Solanum tuberosum
19 Apr – 3 May
27 May
4-6 wk
31 May
24 Jun
2 wk after
31 May
14 Jun
2 wk after
Ornamental Kale
Brassica oleracea (Ornamental-gruppen)
27 Mar – 10 Apr
21 Jun
5-7 wk
15 May
26 Jul
0 wk
19 May
16 Jul
1 wk after
Pumpkin
Cucurbita pepo
19 – 26 May
16 Jun
3-4 wk
16 Jun
7 Jul
5 wk after
Beetroot
Beta vulgaris (Conditiva-gruppen)
19 – 26 Apr
9 Jun
3-4 wk
17 May
30 Jun
0 wk
5 Jun
20 Jun
3 wk after
Red Cabbage
Brassica oleracea (Red Cabbage-gruppen)
3 – 17 Apr
23 Jun
4-6 wk
15 May
21 Jul
0 wk
Lettuce
Lactuca sativa
17 – 24 Apr
10 Jul
3-4 wk
15 May
31 Jul
0 wk
19 May
21 Jul
1 wk after
Savoy Cabbage
Brassica oleracea (Savoy Cabbage-gruppen)
3 – 17 Apr
23 Jun
4-6 wk
15 May
21 Jul
0 wk
Shallot (bulbs)
Allium cepa (Aggregatum-gruppen)
17 Apr – 1 May
2 Jun
2-4 wk
15 May
16 Jun
0 wk
15 May
6 Jun
0 wk
Shallot (sets)
Allium cepa (Aggregatum-gruppen)
19 May
16 Jun
1 wk after
19 May
6 Jun
1 wk after
Spinach
Spinacia oleracea
17 – 24 Apr
25 Jul
3-4 wk
15 May
15 Aug
0 wk
11 May
5 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
18 Apr
6-8 wk
28 May
30 May
2 wk after
Tomatillo
Physalis ixocarpa
Common Bean
Phaseolus vulgaris
30 Apr – 14 May
18 Jun
2-4 wk
28 May
2 Jul
2 wk after
3 Jul
7 wk after
White Cabbage
Brassica oleracea (White Cabbage-gruppen)
3 – 17 Apr
23 Jun
4-6 wk
15 May
21 Jul
0 wk
Garden pea
Pisum sativum
17 – 24 Apr
25 Jun
3-4 wk
15 May
16 Jul
0 wk
19 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
5 – 19 May
25 May
4-6 wk
16 Jun
22 Jun
5 wk after
Lemon balm
Melissa officinalis
6 – 20 Mar
21 May
8-10 wk
15 May
16 Jul
0 wk
19 Jun
6 Jul
5 wk after
Dill
Anethum graveolens
19 May
26 Jul
1 wk after
Wild chives
Allium schoenoprasum
20 Mar – 3 Apr
4 Jun
6-8 wk
15 May
16 Jul
0 wk
19 May
6 Jul
1 wk after
Spearmint
Mentha spicata
20 Feb – 20 Mar
21 May
8-12 wk
15 May
16 Jul
0 wk
19 Jun
6 Jul
5 wk after
Coriander
Coriandrum sativum
15 May
15 Aug
0 wk
5 Jun
5 Aug
3 wk after
Garden sage
Salvia officinalis
8 – 22 Mar
6 May
8-10 wk
17 May
1 Jul
0 wk
Common thyme
Thymus vulgaris
6 – 20 Mar
11 May
8-10 wk
15 May
6 Jul
0 wk
Oregano
Origanum vulgare
20 Mar – 3 Apr
25 May
6-8 wk
15 May
6 Jul
0 wk
19 Jun
26 Jun
5 wk after
Parsley
Petroselinum crispum
20 Mar – 3 Apr
25 May
6-8 wk
15 May
6 Jul
0 wk
19 May
26 Jun
1 wk after
Rosemary
Salvia rosmarinus
8 Feb – 8 Mar
4 Apr
10-14 wk
17 May
13 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
1 Jun
3-4 wk
16 Jun
22 Jun
5 wk after
Cornflower
Centaurea cyanus
15 May
16 Jul
0 wk
19 May
6 Jul
1 wk after
Statice
Limonium sinuatum
19 Mar – 2 Apr
30 Apr
8-10 wk
28 May
25 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
14 May
6-8 wk
28 May
25 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
22 Jun
8-12 wk
16 Jun
17 Aug
5 wk after
Creeping zinnia
Sanvitalia procumbens
2 – 16 Apr
24 May
6-8 wk
28 May
5 Jul
2 wk after
Hyacinth bean
Dolichos lablab
Greenhouse
16 – 30 Apr
5 May
4-6 wk
28 May
2 Jun
2 wk after
Chinese lantern
Physalis alkekengi
8 – 22 Mar
21 Apr
8-10 wk
17 May
16 Jun
0 wk
Love in a mist
Nigella damascena
15 May
1 Jul
0 wk
19 May
21 Jun
1 wk after
Strawflower
Xerochrysum bracteatum
2 – 16 Apr
4 May
6-8 wk
28 May
15 Jun
2 wk after
28 Jul
11 wk after
Purple-top vervain
Verbena bonariensis
22 Feb – 22 Mar
21 Apr
8-12 wk
17 May
16 Jun
0 wk
Cardoon
Cynara cardunculus
5 Mar – 2 Apr
22 Mar
8-12 wk
28 May
2 wk after
Regal-foxtail
Ptilotus nobilis
24 Mar – 21 Apr
17 Apr
8-12 wk
16 Jun
5 wk after
Globe amaranth
Gomphrena globosa
21 Apr – 5 May
1 May
6-8 wk
16 Jun
5 wk after
Corn poppy
Papaver rhoeas
15 May
16 Jul
0 wk
19 May
6 Jul
1 wk after
Snapdragon
Antirrhinum majus
20 Feb – 20 Mar
11 May
8-12 wk
15 May
6 Jul
0 wk
31 May
26 Jun
2 wk after
Flossflower
Ageratum houstonianum
7 – 21 Apr
10 May
8-10 wk
16 Jun
5 Jul
5 wk after
Sweet pea
Lathyrus odoratus
20 Mar – 10 Apr
1 Jun
5-8 wk
15 May
6 Jul
0 wk
Stock
Matthiola incana
20 Mar – 3 Apr
4 Jun
6-8 wk
15 May
16 Jul
0 wk
5 Jun
6 Jul
3 wk after
Wormwood
Artemisia absinthium
20 Mar – 3 Apr
5 May
6-8 wk
15 May
16 Jun
0 wk
5 Jun
6 Jun
3 wk after
Mexican sunflower
Tithonia rotundifolia
5 – 19 May
10 May
4-6 wk
16 Jun
5 wk after
Garden pansy
Viola × wittrockiana
6 – 20 Mar
21 May
8-10 wk
15 May
16 Jul
0 wk
31 May
6 Jul
2 wk after
Petunia
Petunia
5 Mar – 2 Apr
30 Apr
8-12 wk
28 May
25 Jun
2 wk after
Sweet Scabious
Scabiosa atropurpurea
22 Mar – 5 Apr
5 May
6-8 wk
17 May
16 Jun
0 wk
3 Jul
7 wk after
Common zinnia
Zinnia elegans
16 – 30 Apr
4 Jun
4-6 wk
28 May
2 Jul
2 wk after
Common morning glory
Ipomoea purpurea
12 – 26 May
1 Jun
3-5 wk
16 Jun
22 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
17 May
8-12 wk
7 Jul
12 Jul
8 wk after
Bee balm
Monarda didyma
20 Feb – 20 Mar
21 Apr
8-12 wk
15 May
16 Jun
0 wk
19 Jun
5 wk after
Yarrow
Achillea millefolium
20 Mar – 3 Apr
5 Apr
6-8 wk
15 May
17 May
0 wk
5 Jun
3 wk after
Safflower
Carthamus tinctorius
15 May
16 Jun
0 wk
19 May
6 Jun
1 wk after
Iceland poppy
Papaver nudicaule
Season too short
20 Mar – 3 Apr
25 May
6-8 wk
15 May
6 Jul
0 wk
27 Apr
26 Jun
3 wk before
Bishop's flower
Ammi majus
3 – 17 Apr
8 Jun
4-6 wk
15 May
6 Jul
0 wk
5 Jun
26 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
12 Jun
3-4 wk
28 May
3 Jul
2 wk after
19 Jun
23 Jun
5 wk after
China aster
Callistephus chinensis
2 – 16 Apr
1 Jun
6-8 wk
28 May
13 Jul
2 wk after
3 Jul
3 Jul
7 wk after
Annual phlox
Phlox drummondii
26 Mar – 9 Apr
24 May
6-8 wk
21 May
5 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
21 Apr
8-12 wk
15 May
16 Jun
0 wk
19 Jun
5 wk after
African marigold
Tagetes erecta
2 – 16 Apr
24 May
6-8 wk
28 May
5 Jul
2 wk after
Black-eyed Susan
Rudbeckia hirta
22 Mar – 5 Apr
22 May
6-8 wk
17 May
3 Jul
0 wk
3 Jul
7 wk after
Wood sage
Salvia nemorosa
6 – 20 Mar
11 Apr
8-10 wk
15 May
6 Jun
0 wk
19 Jun
5 wk after
Black-eyed susan vine
Thunbergia alata
7 Apr – 5 May
11 May
6-10 wk
16 Jun
22 Jun
5 wk after
California goldenpoppy
Eschscholzia californica
15 May
16 Jul
0 wk
19 May
6 Jul
1 wk after
Painted tongue
Salpiglossis sinuata
19 Mar – 2 Apr
4 May
8-10 wk
28 May
29 Jun
2 wk after
Water forget-me-not
Myosotis scorpioides
20 Mar – 3 Apr
5 May
6-8 wk
15 May
16 Jun
0 wk
5 Jun
6 Jun
3 wk after