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Method
Rel. frost
Last spring frost (0°C) 28 May Normal year · 20 years of data
Frost-free season 117 days 28 May – 22 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)
9 – 23 Apr
11 Jun
5-7 wk
28 May
16 Jul
0 wk
29 May
6 Jul
0 wk
Broccoli
Brassica oleracea (Italica-gruppen)
16 – 30 Apr
23 Jun
4-6 wk
28 May
21 Jul
0 wk
29 May
11 Jul
0 wk
Chili pepper
Capsicum annuum
Season too short
11 Mar – 8 Apr
8-12 wk
3 Jun
1 wk after
Curly Kale
Brassica oleracea (Curly Kale-gruppen)
9 – 23 Apr
6 Jun
5-7 wk
28 May
11 Jul
0 wk
28 May
1 Jul
0 wk
Garden cucumber
Cucumis sativus
Greenhouse
6 – 13 May
6 Jun
3-4 wk
3 Jun
27 Jun
1 wk after
Florence Fennel
Foeniculum vulgare
Fleece
6 – 13 May
3 Jun
4-5 wk
10 Jun
1 Jul
2 wk after
22 Jun
4 wk after
Butter bean
Phaseolus lunatus
Season too short
8 – 15 Jun
3-4 wk
6 Jul
6 wk after
Onion
Allium cepa (Cepa-gruppen)
Season too short
5 Mar – 2 Apr
15 Mar
8-12 wk
28 May
0 wk
28 May
0 wk
Onion (sets)
Allium cepa (Cepa-gruppen)
Season too short
19 May
30 May
1 wk before
19 May
20 May
1 wk before
Maize
Zea mays
Greenhouse
30 Apr – 7 May
27 May
3-4 wk
28 May
17 Jun
0 wk
Swiss Chard
Beta vulgaris (Flavescens-gruppen)
2 – 9 May
30 Jun
3-4 wk
30 May
21 Jul
0 wk
10 Jun
11 Jul
2 wk after
Carrot
Daucus carota subsp. sativus var. sativus
28 May
1 Jul
0 wk
28 May
21 Jun
0 wk
Palm Kale
Brassica oleracea (Palm Kale-gruppen)
9 – 23 Apr
6 Jun
5-7 wk
28 May
11 Jul
0 wk
28 May
1 Jul
0 wk
Potato
Solanum tuberosum
Greenhouse
13 – 27 Apr
15 May
4-6 wk
25 May
12 Jun
0 wk
25 May
2 Jun
0 wk
Ornamental Kale
Brassica oleracea (Ornamental-gruppen)
9 – 23 Apr
16 Jun
5-7 wk
28 May
21 Jul
0 wk
29 May
11 Jul
0 wk
Pumpkin
Cucurbita pepo
Fleece
13 – 20 May
11 Jun
3-4 wk
10 Jun
2 Jul
2 wk after
Beetroot
Beta vulgaris (Conditiva-gruppen)
Fleece
30 Apr – 7 May
15 May
3-4 wk
28 May
5 Jun
0 wk
3 Jun
1 wk after
Red Cabbage
Brassica oleracea (Red Cabbage-gruppen)
16 – 30 Apr
18 Jun
4-6 wk
28 May
16 Jul
0 wk
Lettuce
Lactuca sativa
30 Apr – 7 May
5 Jul
3-4 wk
28 May
26 Jul
0 wk
29 May
16 Jul
0 wk
Savoy Cabbage
Brassica oleracea (Savoy Cabbage-gruppen)
16 – 30 Apr
18 Jun
4-6 wk
28 May
16 Jul
0 wk
Shallot (bulbs)
Allium cepa (Aggregatum-gruppen)
Greenhouse
14 – 28 Apr
28 May
2-4 wk
12 May
11 Jun
2 wk before
12 May
1 Jun
2 wk before
Shallot (sets)
Allium cepa (Aggregatum-gruppen)
Season too short
19 May
30 May
1 wk before
19 May
20 May
1 wk before
Spinach
Spinacia oleracea
30 Apr – 7 May
20 Jul
3-4 wk
28 May
10 Aug
0 wk
25 May
31 Jul
0 wk
Sweet potato
Ipomoea batatas
22 Jun – 6 Jul
4-6 wk
3 Aug
10 wk after
Garden tomato
Solanum lycopersicum
Greenhouse
2 – 16 Apr
6 May
6-8 wk
28 May
17 Jun
0 wk
Tomatillo
Physalis ixocarpa
Common Bean
Phaseolus vulgaris
Fleece
6 – 20 May
13 Jun
2-4 wk
3 Jun
27 Jun
1 wk after
22 Jun
4 wk after
White Cabbage
Brassica oleracea (White Cabbage-gruppen)
16 – 30 Apr
18 Jun
4-6 wk
28 May
16 Jul
0 wk
Garden pea
Pisum sativum
30 Apr – 7 May
20 Jun
3-4 wk
28 May
11 Jul
0 wk
29 May
1 Jul
0 wk

Herbs

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