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Method
Rel. frost
Last spring frost (0°C) 12 May Normal year · 20 years of data
Frost-free season 138 days 12 May – 27 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)
24 Mar – 7 Apr
17 Jun
5-7 wk
12 May
22 Jul
0 wk
5 May
12 Jul
1 wk before
Broccoli
Brassica oleracea (Italica-gruppen)
31 Mar – 14 Apr
29 Jun
4-6 wk
12 May
27 Jul
0 wk
5 May
17 Jul
1 wk before
Chili pepper
Capsicum annuum
Greenhouse
27 Feb – 27 Mar
10 Apr
8-12 wk
22 May
5 Jun
1 wk after
Curly Kale
Brassica oleracea (Curly Kale-gruppen)
24 Mar – 7 Apr
12 Jun
5-7 wk
12 May
17 Jul
0 wk
30 Apr
7 Jul
2 wk before
Garden cucumber
Cucumis sativus
20 – 27 May
3-4 wk
17 Jun
5 wk after
Florence Fennel
Foeniculum vulgare
13 – 20 May
28 May
4-5 wk
17 Jun
25 Jun
5 wk after
17 Jun
5 wk after
Butter bean
Phaseolus lunatus
Season too short
25 May – 1 Jun
3-4 wk
22 Jun
6 wk after
Onion
Allium cepa (Cepa-gruppen)
17 Feb – 17 Mar
31 Mar
8-12 wk
12 May
26 May
0 wk
22 May
1 wk after
Onion (sets)
Allium cepa (Cepa-gruppen)
5 May
15 Jun
1 wk before
5 May
5 Jun
1 wk before
Maize
Zea mays
4 – 11 May
9 May
3-4 wk
1 Jun
3 wk after
Swiss Chard
Beta vulgaris (Flavescens-gruppen)
19 – 26 Apr
6 Jul
3-4 wk
17 May
27 Jul
1 wk after
22 May
17 Jul
1 wk after
Carrot
Daucus carota subsp. sativus var. sativus
12 May
7 Jul
0 wk
30 Apr
27 Jun
2 wk before
Palm Kale
Brassica oleracea (Palm Kale-gruppen)
24 Mar – 7 Apr
12 Jun
5-7 wk
12 May
17 Jul
0 wk
30 Apr
7 Jul
2 wk before
Potato
Solanum tuberosum
5 – 19 Apr
29 May
4-6 wk
17 May
26 Jun
1 wk after
17 May
16 Jun
1 wk after
Ornamental Kale
Brassica oleracea (Ornamental-gruppen)
24 Mar – 7 Apr
22 Jun
5-7 wk
12 May
27 Jul
0 wk
5 May
17 Jul
1 wk before
Pumpkin
Cucurbita pepo
20 – 27 May
9 Jun
3-4 wk
17 Jun
30 Jun
5 wk after
Beetroot
Beta vulgaris (Conditiva-gruppen)
19 – 26 Apr
10 Jun
3-4 wk
17 May
1 Jul
1 wk after
22 May
21 Jun
1 wk after
Red Cabbage
Brassica oleracea (Red Cabbage-gruppen)
31 Mar – 14 Apr
24 Jun
4-6 wk
12 May
22 Jul
0 wk
Lettuce
Lactuca sativa
14 – 21 Apr
11 Jul
3-4 wk
12 May
1 Aug
0 wk
5 May
22 Jul
1 wk before
Savoy Cabbage
Brassica oleracea (Savoy Cabbage-gruppen)
31 Mar – 14 Apr
24 Jun
4-6 wk
12 May
22 Jul
0 wk
Shallot (bulbs)
Allium cepa (Aggregatum-gruppen)
2 – 16 Apr
3 Jun
2-4 wk
30 Apr
17 Jun
2 wk before
30 Apr
7 Jun
2 wk before
Shallot (sets)
Allium cepa (Aggregatum-gruppen)
5 May
15 Jun
1 wk before
5 May
5 Jun
1 wk before
Spinach
Spinacia oleracea
14 – 21 Apr
26 Jul
3-4 wk
12 May
16 Aug
0 wk
24 Apr
6 Aug
3 wk before
Sweet potato
Ipomoea batatas
8 – 22 Jun
4-6 wk
20 Jul
10 wk after
Garden tomato
Solanum lycopersicum
6 – 20 Apr
18 Apr
6-8 wk
1 Jun
3 wk after
Tomatillo
Physalis ixocarpa
Common Bean
Phaseolus vulgaris
4 – 18 May
11 Jun
2-4 wk
1 Jun
25 Jun
3 wk after
17 Jun
5 wk after
White Cabbage
Brassica oleracea (White Cabbage-gruppen)
31 Mar – 14 Apr
24 Jun
4-6 wk
12 May
22 Jul
0 wk
Garden pea
Pisum sativum
14 – 21 Apr
26 Jun
3-4 wk
12 May
17 Jul
0 wk
5 May
7 Jul
1 wk before

Herbs

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