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