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

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