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Method
Rel. frost
Last spring frost (0°C) 28 May Normal year · 20 years of data
Frost-free season 97 days 28 May – 2 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
12 Jun
5-7 wk
28 May
17 Jul
0 wk
29 May
7 Jul
0 wk
Broccoli
Brassica oleracea (Italica-gruppen)
16 – 30 Apr
24 Jun
4-6 wk
28 May
22 Jul
0 wk
29 May
12 Jul
0 wk
Chili pepper
Capsicum annuum
Season too short
11 Mar – 8 Apr
20 Mar
8-12 wk
3 Jun
1 wk after
Curly Kale
Brassica oleracea (Curly Kale-gruppen)
9 – 23 Apr
7 Jun
5-7 wk
28 May
12 Jul
0 wk
28 May
2 Jul
0 wk
Garden cucumber
Cucumis sativus
Greenhouse
6 – 13 May
27 May
3-4 wk
3 Jun
17 Jun
1 wk after
Florence Fennel
Foeniculum vulgare
Fleece
6 – 13 May
1 Jun
4-5 wk
10 Jun
29 Jun
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)
Greenhouse
5 Mar – 2 Apr
28 Mar
8-12 wk
28 May
0 wk
28 May
0 wk
Onion (sets)
Allium cepa (Cepa-gruppen)
29 May
0 wk
29 May
0 wk
Maize
Zea mays
Greenhouse
30 Apr – 7 May
17 May
3-4 wk
28 May
7 Jun
0 wk
Swiss Chard
Beta vulgaris (Flavescens-gruppen)
2 – 9 May
28 Jun
3-4 wk
30 May
19 Jul
0 wk
10 Jun
9 Jul
2 wk after
Carrot
Daucus carota subsp. sativus var. sativus
28 May
2 Jul
0 wk
28 May
22 Jun
0 wk
Palm Kale
Brassica oleracea (Palm Kale-gruppen)
9 – 23 Apr
7 Jun
5-7 wk
28 May
12 Jul
0 wk
28 May
2 Jul
0 wk
Potato
Solanum tuberosum
26 Apr – 10 May
4 May
4-6 wk
7 Jun
1 wk after
7 Jun
1 wk after
Ornamental Kale
Brassica oleracea (Ornamental-gruppen)
9 – 23 Apr
17 Jun
5-7 wk
28 May
22 Jul
0 wk
29 May
12 Jul
0 wk
Pumpkin
Cucurbita pepo
Fleece
13 – 20 May
1 Jun
3-4 wk
10 Jun
22 Jun
2 wk after
Beetroot
Beta vulgaris (Conditiva-gruppen)
2 – 9 May
8 May
3-4 wk
30 May
0 wk
10 Jun
2 wk after
Red Cabbage
Brassica oleracea (Red Cabbage-gruppen)
16 – 30 Apr
19 Jun
4-6 wk
28 May
17 Jul
0 wk
Lettuce
Lactuca sativa
30 Apr – 7 May
6 Jul
3-4 wk
28 May
27 Jul
0 wk
29 May
17 Jul
0 wk
Savoy Cabbage
Brassica oleracea (Savoy Cabbage-gruppen)
16 – 30 Apr
19 Jun
4-6 wk
28 May
17 Jul
0 wk
Shallot (bulbs)
Allium cepa (Aggregatum-gruppen)
30 Apr – 14 May
15 May
2-4 wk
28 May
29 May
0 wk
28 May
0 wk
Shallot (sets)
Allium cepa (Aggregatum-gruppen)
29 May
0 wk
29 May
0 wk
Spinach
Spinacia oleracea
30 Apr – 7 May
21 Jul
3-4 wk
28 May
11 Aug
0 wk
25 May
1 Aug
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
26 Apr
6-8 wk
28 May
7 Jun
0 wk
Tomatillo
Physalis ixocarpa
Common Bean
Phaseolus vulgaris
Fleece
6 – 20 May
3 Jun
2-4 wk
3 Jun
17 Jun
1 wk after
22 Jun
4 wk after
White Cabbage
Brassica oleracea (White Cabbage-gruppen)
16 – 30 Apr
19 Jun
4-6 wk
28 May
17 Jul
0 wk
Garden pea
Pisum sativum
30 Apr – 7 May
21 Jun
3-4 wk
28 May
12 Jul
0 wk
29 May
2 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
28 May
4-6 wk
3 Jun
25 Jun
1 wk after
Lemon balm
Melissa officinalis
19 Mar – 2 Apr
17 May
8-10 wk
28 May
12 Jul
0 wk
22 Jun
2 Jul
4 wk after
Dill
Anethum graveolens
29 May
19 Jul
0 wk
Wild chives
Allium schoenoprasum
2 – 16 Apr
31 May
6-8 wk
28 May
12 Jul
0 wk
29 May
2 Jul
0 wk
Spearmint
Mentha spicata
5 Mar – 2 Apr
17 May
8-12 wk
28 May
12 Jul
0 wk
22 Jun
2 Jul
4 wk after
Coriander
Coriandrum sativum
28 May
8 Aug
0 wk
10 Jun
29 Jul
2 wk after
Garden sage
Salvia officinalis
21 Mar – 4 Apr
2 May
8-10 wk
30 May
27 Jun
0 wk
Common thyme
Thymus vulgaris
19 Mar – 2 Apr
7 May
8-10 wk
28 May
2 Jul
0 wk
Oregano
Origanum vulgare
2 – 16 Apr
21 May
6-8 wk
28 May
2 Jul
0 wk
22 Jun
22 Jun
4 wk after
Parsley
Petroselinum crispum
2 – 16 Apr
21 May
6-8 wk
28 May
2 Jul
0 wk
29 May
22 Jun
0 wk
Rosemary
Salvia rosmarinus
21 Feb – 21 Mar
22 Mar
10-14 wk
30 May
31 May
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
4 Jun
3-4 wk
3 Jun
25 Jun
1 wk after
Cornflower
Centaurea cyanus
28 May
12 Jul
0 wk
29 May
2 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
4 May
6-8 wk
8 Jun
15 Jun
2 wk after
Pinnate dahlia (tubers)
Dahlia × pinnata
Fleece
15 Apr – 13 May
31 May
4-8 wk
10 Jun
28 Jun
2 wk after
10 Jun
18 Jun
2 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
28 May
8-12 wk
29 Jun
23 Jul
5 wk after
Creeping zinnia
Sanvitalia procumbens
15 – 29 Apr
10 May
6-8 wk
10 Jun
21 Jun
2 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
14 Apr
8-10 wk
30 May
9 Jun
0 wk
Love in a mist
Nigella damascena
28 May
27 Jun
0 wk
29 May
17 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
14 Apr
8-12 wk
30 May
9 Jun
0 wk
Cardoon
Cynara cardunculus
Greenhouse
5 Mar – 2 Apr
18 Mar
8-12 wk
28 May
0 wk
Regal-foxtail
Ptilotus nobilis
Greenhouse
11 Mar – 8 Apr
20 Apr
8-12 wk
3 Jun
15 Jun
1 wk after
Globe amaranth
Gomphrena globosa
Greenhouse
8 – 22 Apr
4 May
6-8 wk
3 Jun
15 Jun
1 wk after
Corn poppy
Papaver rhoeas
28 May
12 Jul
0 wk
29 May
2 Jul
0 wk
Snapdragon
Antirrhinum majus
5 Mar – 2 Apr
7 May
8-12 wk
28 May
2 Jul
0 wk
7 Jun
22 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
28 May
5-8 wk
28 May
2 Jul
0 wk
Stock
Matthiola incana
2 – 16 Apr
31 May
6-8 wk
28 May
12 Jul
0 wk
10 Jun
2 Jul
2 wk after
Wormwood
Artemisia absinthium
2 – 16 Apr
1 May
6-8 wk
28 May
12 Jun
0 wk
10 Jun
2 wk after
Mexican sunflower
Tithonia rotundifolia
Greenhouse
22 Apr – 6 May
13 May
4-6 wk
3 Jun
10 Jun
1 wk after
Garden pansy
Viola × wittrockiana
19 Mar – 2 Apr
17 May
8-10 wk
28 May
12 Jul
0 wk
7 Jun
2 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
28 Apr
6-8 wk
30 May
9 Jun
0 wk
10 Jul
6 wk after
Common zinnia
Zinnia elegans
Fleece
22 Apr – 6 May
28 May
4-6 wk
3 Jun
25 Jun
1 wk after
Common morning glory
Ipomoea purpurea
Greenhouse
29 Apr – 13 May
4 Jun
3-5 wk
3 Jun
25 Jun
1 wk after
Garden cosmos
Cosmos bipinnatus
Fleece
22 Apr – 6 May
31 May
4-6 wk
3 Jun
28 Jun
1 wk after
22 Jun
4 wk after
Scarlet milkweed
Asclepias curassavica
Greenhouse
18 Mar – 15 Apr
20 May
8-12 wk
10 Jun
15 Jul
2 wk after
Bee balm
Monarda didyma
5 Mar – 2 Apr
17 Apr
8-12 wk
28 May
12 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
12 Jun
0 wk
29 May
2 Jun
0 wk
Iceland poppy
Papaver nudicaule
Season too short
2 – 16 Apr
21 May
6-8 wk
28 May
2 Jul
0 wk
12 May
22 Jun
2 wk before
Bishop's flower
Ammi majus
16 – 30 Apr
4 Jun
4-6 wk
28 May
2 Jul
0 wk
10 Jun
22 Jun
2 wk after
Drumsticks
Pycnosorus globosus
Greenhouse
11 – 25 Mar
30 Mar
10-12 wk
3 Jun
8 Jun
1 wk after
Sunflower
Helianthus annuus
13 – 20 May
30 May
3-4 wk
10 Jun
20 Jun
2 wk after
22 Jun
4 wk after
China aster
Callistephus chinensis
15 – 29 Apr
19 May
6-8 wk
10 Jun
30 Jun
2 wk after
10 Jul
6 wk after
Annual phlox
Phlox drummondii
8 – 22 Apr
10 May
6-8 wk
3 Jun
21 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
17 Apr
8-12 wk
28 May
12 Jun
0 wk
22 Jun
4 wk after
African marigold
Tagetes erecta
15 – 29 Apr
10 May
6-8 wk
10 Jun
21 Jun
2 wk after
Black-eyed Susan
Rudbeckia hirta
4 – 18 Apr
9 May
6-8 wk
30 May
20 Jun
0 wk
10 Jul
6 wk after
Wood sage
Salvia nemorosa
19 Mar – 2 Apr
7 Apr
8-10 wk
28 May
2 Jun
0 wk
22 Jun
4 wk after
Black-eyed susan vine
Thunbergia alata
Greenhouse
25 Mar – 22 Apr
14 May
6-10 wk
3 Jun
25 Jun
1 wk after
California goldenpoppy
Eschscholzia californica
28 May
9 Jul
0 wk
29 May
29 Jun
0 wk
Painted tongue
Salpiglossis sinuata
Fleece
25 Mar – 8 Apr
4 May
8-10 wk
3 Jun
29 Jun
1 wk after
Water forget-me-not
Myosotis scorpioides
2 – 16 Apr
1 May
6-8 wk
28 May
12 Jun
0 wk
10 Jun
2 wk after