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Method
Rel. frost
Last spring frost (0°C) 26 May Normal year · 20 years of data
Frost-free season 121 days 26 May – 24 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)
7 – 21 Apr
10 Jun
5-7 wk
26 May
15 Jul
0 wk
27 May
5 Jul
0 wk
Broccoli
Brassica oleracea (Italica-gruppen)
14 – 28 Apr
22 Jun
4-6 wk
26 May
20 Jul
0 wk
27 May
10 Jul
0 wk
Chili pepper
Capsicum annuum
Season too short
9 Mar – 6 Apr
8-12 wk
1 Jun
1 wk after
Curly Kale
Brassica oleracea (Curly Kale-gruppen)
7 – 21 Apr
5 Jun
5-7 wk
26 May
10 Jul
0 wk
26 May
30 Jun
0 wk
Garden cucumber
Cucumis sativus
Greenhouse
4 – 11 May
25 May
3-4 wk
1 Jun
15 Jun
1 wk after
Florence Fennel
Foeniculum vulgare
Fleece
4 – 11 May
2 Jun
4-5 wk
8 Jun
30 Jun
2 wk after
20 Jun
20 Jun
4 wk after
Butter bean
Phaseolus lunatus
Season too short
6 – 13 Jun
3-4 wk
4 Jul
6 wk after
Onion
Allium cepa (Cepa-gruppen)
Season too short
3 – 31 Mar
12 Mar
8-12 wk
26 May
0 wk
26 May
0 wk
Onion (sets)
Allium cepa (Cepa-gruppen)
Season too short
17 May
27 May
1 wk before
17 May
17 May
1 wk before
Maize
Zea mays
Greenhouse
28 Apr – 5 May
15 May
3-4 wk
26 May
5 Jun
0 wk
Swiss Chard
Beta vulgaris (Flavescens-gruppen)
30 Apr – 7 May
29 Jun
3-4 wk
28 May
20 Jul
0 wk
8 Jun
10 Jul
2 wk after
Carrot
Daucus carota subsp. sativus var. sativus
26 May
30 Jun
0 wk
26 May
20 Jun
0 wk
Palm Kale
Brassica oleracea (Palm Kale-gruppen)
7 – 21 Apr
5 Jun
5-7 wk
26 May
10 Jul
0 wk
26 May
30 Jun
0 wk
Potato
Solanum tuberosum
Season too short
11 – 25 Apr
8 May
4-6 wk
23 May
5 Jun
0 wk
23 May
26 May
0 wk
Ornamental Kale
Brassica oleracea (Ornamental-gruppen)
7 – 21 Apr
15 Jun
5-7 wk
26 May
20 Jul
0 wk
27 May
10 Jul
0 wk
Pumpkin
Cucurbita pepo
Fleece
11 – 18 May
30 May
3-4 wk
8 Jun
20 Jun
2 wk after
Beetroot
Beta vulgaris (Conditiva-gruppen)
Fleece
28 Apr – 5 May
6 May
3-4 wk
26 May
27 May
0 wk
1 Jun
1 wk after
Red Cabbage
Brassica oleracea (Red Cabbage-gruppen)
14 – 28 Apr
17 Jun
4-6 wk
26 May
15 Jul
0 wk
Lettuce
Lactuca sativa
28 Apr – 5 May
4 Jul
3-4 wk
26 May
25 Jul
0 wk
27 May
15 Jul
0 wk
Savoy Cabbage
Brassica oleracea (Savoy Cabbage-gruppen)
14 – 28 Apr
17 Jun
4-6 wk
26 May
15 Jul
0 wk
Shallot (bulbs)
Allium cepa (Aggregatum-gruppen)
Greenhouse
12 – 26 Apr
25 May
2-4 wk
10 May
8 Jun
2 wk before
10 May
29 May
2 wk before
Shallot (sets)
Allium cepa (Aggregatum-gruppen)
Season too short
17 May
27 May
1 wk before
17 May
17 May
1 wk before
Spinach
Spinacia oleracea
28 Apr – 5 May
19 Jul
3-4 wk
26 May
9 Aug
0 wk
23 May
30 Jul
0 wk
Sweet potato
Ipomoea batatas
20 Jun – 4 Jul
4-6 wk
1 Aug
10 wk after
Garden tomato
Solanum lycopersicum
Greenhouse
31 Mar – 14 Apr
24 Apr
6-8 wk
26 May
5 Jun
0 wk
Tomatillo
Physalis ixocarpa
Common Bean
Phaseolus vulgaris
Fleece
4 – 18 May
1 Jun
2-4 wk
1 Jun
15 Jun
1 wk after
20 Jun
4 wk after
White Cabbage
Brassica oleracea (White Cabbage-gruppen)
14 – 28 Apr
17 Jun
4-6 wk
26 May
15 Jul
0 wk
Garden pea
Pisum sativum
28 Apr – 5 May
19 Jun
3-4 wk
26 May
10 Jul
0 wk
27 May
30 Jun
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
20 Apr – 4 May
27 May
4-6 wk
1 Jun
24 Jun
1 wk after
Lemon balm
Melissa officinalis
17 – 31 Mar
15 May
8-10 wk
26 May
10 Jul
0 wk
20 Jun
30 Jun
4 wk after
Dill
Anethum graveolens
27 May
20 Jul
0 wk
Wild chives
Allium schoenoprasum
31 Mar – 14 Apr
29 May
6-8 wk
26 May
10 Jul
0 wk
27 May
30 Jun
0 wk
Spearmint
Mentha spicata
3 – 31 Mar
15 May
8-12 wk
26 May
10 Jul
0 wk
20 Jun
30 Jun
4 wk after
Coriander
Coriandrum sativum
26 May
9 Aug
0 wk
8 Jun
30 Jul
2 wk after
Garden sage
Salvia officinalis
19 Mar – 2 Apr
30 Apr
8-10 wk
28 May
25 Jun
0 wk
Common thyme
Thymus vulgaris
17 – 31 Mar
5 May
8-10 wk
26 May
30 Jun
0 wk
Oregano
Origanum vulgare
31 Mar – 14 Apr
19 May
6-8 wk
26 May
30 Jun
0 wk
20 Jun
20 Jun
4 wk after
Parsley
Petroselinum crispum
31 Mar – 14 Apr
19 May
6-8 wk
26 May
30 Jun
0 wk
27 May
20 Jun
0 wk
Rosemary
Salvia rosmarinus
19 Feb – 19 Mar
30 Mar
10-14 wk
28 May
8 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
4 – 11 May
3 Jun
3-4 wk
1 Jun
24 Jun
1 wk after
Cornflower
Centaurea cyanus
26 May
10 Jul
0 wk
27 May
30 Jun
0 wk
Statice
Limonium sinuatum
Fleece
23 Mar – 6 Apr
23 Apr
8-10 wk
1 Jun
18 Jun
1 wk after
Sweet William
Dianthus barbatus
31 Mar – 14 Apr
6-8 wk
26 May
0 wk
5 Jun
1 wk after
Snow-on-the-mountain
Euphorbia marginata
Fleece
6 – 20 Apr
7 May
6-8 wk
1 Jun
18 Jun
1 wk after
15 Jul
7 wk after
Pinnate dahlia
Dahlia × pinnata
11 – 25 Apr
3 May
6-8 wk
6 Jun
14 Jun
2 wk after
Pinnate dahlia (tubers)
Dahlia × pinnata
Greenhouse
6 Apr – 4 May
2 Jun
4-8 wk
1 Jun
30 Jun
1 wk after
1 Jun
20 Jun
1 wk after
Foxglove
Digitalis purpurea
17 – 31 Mar
8-10 wk
26 May
0 wk
8 Jun
2 wk after
Busy lizzie
Impatiens walleriana
4 Apr – 2 May
26 May
8-12 wk
27 Jun
21 Jul
5 wk after
Creeping zinnia
Sanvitalia procumbens
13 – 27 Apr
10 May
6-8 wk
8 Jun
21 Jun
2 wk after
Hyacinth bean
Dolichos lablab
Season too short
27 Apr – 11 May
4-6 wk
8 Jun
2 wk after
Chinese lantern
Physalis alkekengi
19 Mar – 2 Apr
15 Apr
8-10 wk
28 May
10 Jun
0 wk
Love in a mist
Nigella damascena
26 May
25 Jun
0 wk
27 May
15 Jun
0 wk
Strawflower
Xerochrysum bracteatum
Fleece
6 – 20 Apr
27 Apr
6-8 wk
1 Jun
8 Jun
1 wk after
15 Jul
7 wk after
Purple-top vervain
Verbena bonariensis
5 Mar – 2 Apr
15 Apr
8-12 wk
28 May
10 Jun
0 wk
Cardoon
Cynara cardunculus
Greenhouse
3 – 31 Mar
16 Mar
8-12 wk
26 May
0 wk
Regal-foxtail
Ptilotus nobilis
Greenhouse
9 Mar – 6 Apr
19 Apr
8-12 wk
1 Jun
14 Jun
1 wk after
Globe amaranth
Gomphrena globosa
Greenhouse
6 – 20 Apr
3 May
6-8 wk
1 Jun
14 Jun
1 wk after
Corn poppy
Papaver rhoeas
26 May
10 Jul
0 wk
27 May
30 Jun
0 wk
Snapdragon
Antirrhinum majus
3 – 31 Mar
5 May
8-12 wk
26 May
30 Jun
0 wk
5 Jun
20 Jun
1 wk after
Flossflower
Ageratum houstonianum
Fleece
30 Mar – 13 Apr
3 May
8-10 wk
8 Jun
28 Jun
2 wk after
Sweet pea
Lathyrus odoratus
31 Mar – 21 Apr
26 May
5-8 wk
26 May
30 Jun
0 wk
Stock
Matthiola incana
31 Mar – 14 Apr
29 May
6-8 wk
26 May
10 Jul
0 wk
8 Jun
30 Jun
2 wk after
Wormwood
Artemisia absinthium
31 Mar – 14 Apr
29 Apr
6-8 wk
26 May
10 Jun
0 wk
8 Jun
2 wk after
Mexican sunflower
Tithonia rotundifolia
Greenhouse
20 Apr – 4 May
12 May
4-6 wk
1 Jun
9 Jun
1 wk after
Garden pansy
Viola × wittrockiana
17 – 31 Mar
15 May
8-10 wk
26 May
10 Jul
0 wk
5 Jun
30 Jun
1 wk after
Petunia
Petunia
Fleece
9 Mar – 6 Apr
23 Apr
8-12 wk
1 Jun
18 Jun
1 wk after
Sweet Scabious
Scabiosa atropurpurea
2 – 16 Apr
29 Apr
6-8 wk
28 May
10 Jun
0 wk
8 Jul
6 wk after
Common zinnia
Zinnia elegans
Fleece
20 Apr – 4 May
27 May
4-6 wk
1 Jun
24 Jun
1 wk after
Common morning glory
Ipomoea purpurea
Greenhouse
27 Apr – 11 May
3 Jun
3-5 wk
1 Jun
24 Jun
1 wk after
Garden cosmos
Cosmos bipinnatus
Fleece
20 Apr – 4 May
28 May
4-6 wk
1 Jun
25 Jun
1 wk after
20 Jun
4 wk after
Scarlet milkweed
Asclepias curassavica
Greenhouse
16 Mar – 13 Apr
19 May
8-12 wk
8 Jun
14 Jul
2 wk after
Bee balm
Monarda didyma
3 – 31 Mar
15 Apr
8-12 wk
26 May
10 Jun
0 wk
20 Jun
4 wk after
Yarrow
Achillea millefolium
31 Mar – 14 Apr
6-8 wk
26 May
0 wk
8 Jun
2 wk after
Safflower
Carthamus tinctorius
26 May
10 Jun
0 wk
27 May
31 May
0 wk
Iceland poppy
Papaver nudicaule
Season too short
31 Mar – 14 Apr
19 May
6-8 wk
26 May
30 Jun
0 wk
10 May
20 Jun
2 wk before
Bishop's flower
Ammi majus
14 – 28 Apr
2 Jun
4-6 wk
26 May
30 Jun
0 wk
8 Jun
20 Jun
2 wk after
Drumsticks
Pycnosorus globosus
Greenhouse
9 – 23 Mar
27 Mar
10-12 wk
1 Jun
5 Jun
1 wk after
Sunflower
Helianthus annuus
11 – 18 May
7 Jun
3-4 wk
8 Jun
28 Jun
2 wk after
20 Jun
4 wk after
China aster
Callistephus chinensis
13 – 27 Apr
27 May
6-8 wk
8 Jun
8 Jul
2 wk after
8 Jul
6 wk after
Annual phlox
Phlox drummondii
6 – 20 Apr
10 May
6-8 wk
1 Jun
21 Jun
1 wk after
8 Jul
6 wk after
Hollyhock
Alcea rosea
31 Mar – 14 Apr
6-8 wk
26 May
0 wk
8 Jun
2 wk after
Alpine delphinium
Delphinium elatum
3 – 31 Mar
15 Apr
8-12 wk
26 May
10 Jun
0 wk
20 Jun
4 wk after
African marigold
Tagetes erecta
13 – 27 Apr
10 May
6-8 wk
8 Jun
21 Jun
2 wk after
Black-eyed Susan
Rudbeckia hirta
2 – 16 Apr
17 May
6-8 wk
28 May
28 Jun
0 wk
8 Jul
6 wk after
Wood sage
Salvia nemorosa
17 – 31 Mar
5 Apr
8-10 wk
26 May
31 May
0 wk
20 Jun
4 wk after
Black-eyed susan vine
Thunbergia alata
Greenhouse
23 Mar – 20 Apr
13 May
6-10 wk
1 Jun
24 Jun
1 wk after
California goldenpoppy
Eschscholzia californica
26 May
10 Jul
0 wk
27 May
30 Jun
0 wk
Painted tongue
Salpiglossis sinuata
30 Mar – 13 Apr
1 May
8-10 wk
8 Jun
26 Jun
2 wk after
Water forget-me-not
Myosotis scorpioides
31 Mar – 14 Apr
29 Apr
6-8 wk
26 May
10 Jun
0 wk
8 Jun
2 wk after