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Method
Rel. frost
Last spring frost (0°C) 15 May Normal year · 20 years of data
Frost-free season 134 days 15 May – 26 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)
28 Apr – 12 May
13 Jun
5-7 wk
16 Jun
18 Jul
5 wk after
16 May
8 Jul
Vid frost
Broccoli
Brassica oleracea (Italica-gruppen)
22 Apr – 6 May
25 Jun
4-6 wk
3 Jun
23 Jul
3 wk after
16 May
13 Jul
Vid frost
Chili pepper
Capsicum annuum
Greenhouse
26 Mar – 23 Apr
16 Apr
8-12 wk
18 Jun
5 wk after
Curly Kale
Brassica oleracea (Curly Kale-gruppen)
14 – 28 Mar
8 Jun
5-7 wk
2 May
13 Jul
2 wk before
15 May
3 Jul
Vid frost
Garden cucumber
Cucumis sativus
3 – 10 Jun
3-4 wk
1 Jul
7 wk after
Florence Fennel
Foeniculum vulgare
27 May – 3 Jun
29 May
4-5 wk
1 Jul
7 wk after
27 Jun
6 wk after
Butter bean
Phaseolus lunatus
Season too short
4 – 11 Jun
3-4 wk
2 Jul
7 wk after
Onion
Allium cepa (Cepa-gruppen)
20 Feb – 20 Mar
29 Mar
8-12 wk
15 May
24 May
Vid frost
28 May
2 wk after
Onion (sets)
Allium cepa (Cepa-gruppen)
16 May
13 Jun
Vid frost
16 May
3 Jun
Vid frost
Maize
Zea mays
Fleece
21 – 28 May
31 May
3-4 wk
18 Jun
21 Jun
5 wk after
Swiss Chard
Beta vulgaris (Flavescens-gruppen)
19 – 26 May
2 Jul
3-4 wk
16 Jun
23 Jul
5 wk after
28 May
13 Jul
2 wk after
Carrot
Daucus carota subsp. sativus var. sativus
15 May
23 Jun
Vid frost
Palm Kale
Brassica oleracea (Palm Kale-gruppen)
14 – 28 Mar
8 Jun
5-7 wk
2 May
13 Jul
2 wk before
15 May
3 Jul
Vid frost
Potato
Solanum tuberosum
13 – 27 Apr
27 May
4-6 wk
25 May
24 Jun
1 wk after
25 May
14 Jun
1 wk after
Ornamental Kale
Brassica oleracea (Ornamental-gruppen)
14 – 28 Mar
18 Jun
5-7 wk
2 May
23 Jul
2 wk before
16 May
13 Jul
Vid frost
Pumpkin
Cucurbita pepo
3 – 10 Jun
15 Jun
3-4 wk
1 Jul
6 Jul
7 wk after
Beetroot
Beta vulgaris (Conditiva-gruppen)
19 – 26 May
10 Jun
3-4 wk
16 Jun
1 Jul
5 wk after
28 May
21 Jun
2 wk after
Red Cabbage
Brassica oleracea (Red Cabbage-gruppen)
22 Apr – 6 May
20 Jun
4-6 wk
3 Jun
18 Jul
3 wk after
Lettuce
Lactuca sativa
12 – 19 Apr
7 Jul
3-4 wk
10 May
28 Jul
1 wk before
16 May
18 Jul
Vid frost
Savoy Cabbage
Brassica oleracea (Savoy Cabbage-gruppen)
29 Mar – 12 Apr
20 Jun
4-6 wk
10 May
18 Jul
1 wk before
Shallot (bulbs)
Allium cepa (Aggregatum-gruppen)
17 Apr – 1 May
30 May
2-4 wk
15 May
13 Jun
Vid frost
15 May
3 Jun
Vid frost
Shallot (sets)
Allium cepa (Aggregatum-gruppen)
16 May
13 Jun
Vid frost
16 May
3 Jun
Vid frost
Spinach
Spinacia oleracea
7 – 14 Apr
22 Jul
3-4 wk
5 May
12 Aug
1 wk before
12 May
2 Aug
Vid frost
Sweet potato
Ipomoea batatas
9 – 23 Jun
4-6 wk
21 Jul
10 wk after
Garden tomato
Solanum lycopersicum
Fleece
23 Apr – 7 May
10 May
6-8 wk
18 Jun
21 Jun
5 wk after
Tomatillo
Physalis ixocarpa
Common Bean
Phaseolus vulgaris
28 May – 11 Jun
17 Jun
2-4 wk
25 Jun
1 Jul
6 wk after
27 Jun
6 wk after
White Cabbage
Brassica oleracea (White Cabbage-gruppen)
22 Apr – 6 May
20 Jun
4-6 wk
3 Jun
18 Jul
3 wk after
Garden pea
Pisum sativum
7 – 14 Apr
22 Jun
3-4 wk
5 May
13 Jul
1 wk before
16 May
3 Jul
Vid frost

Herbs

Plant Sow indoors Transplant Direct sow
Earliest Latest Growing time Earliest Latest Rel. frost Earliest Latest Rel. frost
Basil
Ocimum basilicum
20 May – 3 Jun
24 May
4-6 wk
1 Jul
7 wk after
Lemon balm
Melissa officinalis
6 – 20 Mar
18 May
8-10 wk
15 May
13 Jul
Vid frost
9 Jun
3 Jul
4 wk after
Dill
Anethum graveolens
16 May
23 Jul
Vid frost
Wild chives
Allium schoenoprasum
7 – 21 Mar
1 Jun
6-8 wk
2 May
13 Jul
2 wk before
16 May
3 Jul
Vid frost
Spearmint
Mentha spicata
10 Feb – 10 Mar
18 May
8-12 wk
5 May
13 Jul
1 wk before
9 Jun
3 Jul
4 wk after
Coriander
Coriandrum sativum
28 May
2 Aug
2 wk after
Garden sage
Salvia officinalis
7 – 21 Apr
3 May
8-10 wk
16 Jun
28 Jun
5 wk after
Common thyme
Thymus vulgaris
25 Mar – 8 Apr
8 May
8-10 wk
3 Jun
3 Jul
3 wk after
Oregano
Origanum vulgare
25 Mar – 8 Apr
22 May
6-8 wk
20 May
3 Jul
1 wk after
9 Jun
23 Jun
4 wk after
Parsley
Petroselinum crispum
10 – 24 Mar
22 May
6-8 wk
5 May
3 Jul
1 wk before
16 May
23 Jun
Vid frost
Rosemary
Salvia rosmarinus
10 Mar – 7 Apr
1 Apr
10-14 wk
16 Jun
5 wk after

Annual flowers

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