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Method
Rel. frost
Last spring frost (0°C) 4 Jun Normal year · 20 years of data
Frost-free season 91 days 4 Jun – 3 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)
16 – 30 Apr
12 Jun
5-7 wk
4 Jun
17 Jul
0 wk
5 Jun
7 Jul
0 wk
Broccoli
Brassica oleracea (Italica-gruppen)
23 Apr – 7 May
24 Jun
4-6 wk
4 Jun
22 Jul
0 wk
5 Jun
12 Jul
0 wk
Chili pepper
Capsicum annuum
Season too short
18 Mar – 15 Apr
8-12 wk
10 Jun
1 wk after
Curly Kale
Brassica oleracea (Curly Kale-gruppen)
16 – 30 Apr
7 Jun
5-7 wk
4 Jun
12 Jul
0 wk
4 Jun
2 Jul
0 wk
Garden cucumber
Cucumis sativus
Greenhouse
13 – 20 May
30 May
3-4 wk
10 Jun
20 Jun
1 wk after
Florence Fennel
Foeniculum vulgare
Greenhouse
6 – 13 May
4 Jun
4-5 wk
10 Jun
2 Jul
1 wk after
17 Jun
22 Jun
2 wk after
Butter bean
Phaseolus lunatus
Season too short
15 – 22 Jun
3-4 wk
13 Jul
6 wk after
Onion
Allium cepa (Cepa-gruppen)
Season too short
12 Mar – 9 Apr
25 Mar
8-12 wk
4 Jun
0 wk
4 Jun
0 wk
Onion (sets)
Allium cepa (Cepa-gruppen)
Fleece
1 Jun
0 wk
1 Jun
0 wk
Maize
Zea mays
Greenhouse
7 – 14 May
20 May
3-4 wk
4 Jun
10 Jun
0 wk
Swiss Chard
Beta vulgaris (Flavescens-gruppen)
9 – 16 May
26 Jun
3-4 wk
6 Jun
17 Jul
0 wk
17 Jun
7 Jul
2 wk after
Carrot
Daucus carota subsp. sativus var. sativus
4 Jun
2 Jul
0 wk
4 Jun
22 Jun
0 wk
Palm Kale
Brassica oleracea (Palm Kale-gruppen)
16 – 30 Apr
7 Jun
5-7 wk
4 Jun
12 Jul
0 wk
4 Jun
2 Jul
0 wk
Potato
Solanum tuberosum
Fleece
24 Apr – 8 May
11 May
4-6 wk
5 Jun
8 Jun
0 wk
5 Jun
0 wk
Ornamental Kale
Brassica oleracea (Ornamental-gruppen)
16 – 30 Apr
17 Jun
5-7 wk
4 Jun
22 Jul
0 wk
5 Jun
12 Jul
0 wk
Pumpkin
Cucurbita pepo
Greenhouse
13 – 20 May
20 Jun
3-4 wk
10 Jun
11 Jul
1 wk after
Beetroot
Beta vulgaris (Conditiva-gruppen)
Fleece
7 – 14 May
18 May
3-4 wk
4 Jun
8 Jun
0 wk
10 Jun
1 wk after
Red Cabbage
Brassica oleracea (Red Cabbage-gruppen)
23 Apr – 7 May
19 Jun
4-6 wk
4 Jun
17 Jul
0 wk
Lettuce
Lactuca sativa
7 – 14 May
6 Jul
3-4 wk
4 Jun
27 Jul
0 wk
5 Jun
17 Jul
0 wk
Savoy Cabbage
Brassica oleracea (Savoy Cabbage-gruppen)
23 Apr – 7 May
19 Jun
4-6 wk
4 Jun
17 Jul
0 wk
Shallot (bulbs)
Allium cepa (Aggregatum-gruppen)
7 – 21 May
11 May
2-4 wk
4 Jun
0 wk
4 Jun
0 wk
Shallot (sets)
Allium cepa (Aggregatum-gruppen)
Fleece
1 Jun
0 wk
1 Jun
0 wk
Spinach
Spinacia oleracea
7 – 14 May
21 Jul
3-4 wk
4 Jun
11 Aug
0 wk
1 Jun
1 Aug
0 wk
Sweet potato
Ipomoea batatas
29 Jun – 13 Jul
4-6 wk
10 Aug
10 wk after
Garden tomato
Solanum lycopersicum
Greenhouse
9 – 23 Apr
29 Apr
6-8 wk
4 Jun
10 Jun
0 wk
Tomatillo
Physalis ixocarpa
Common Bean
Phaseolus vulgaris
Fleece
13 – 27 May
6 Jun
2-4 wk
10 Jun
20 Jun
1 wk after
29 Jun
4 wk after
White Cabbage
Brassica oleracea (White Cabbage-gruppen)
23 Apr – 7 May
19 Jun
4-6 wk
4 Jun
17 Jul
0 wk
Garden pea
Pisum sativum
7 – 14 May
21 Jun
3-4 wk
4 Jun
12 Jul
0 wk
5 Jun
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
29 Apr – 13 May
29 May
4-6 wk
10 Jun
26 Jun
1 wk after
Lemon balm
Melissa officinalis
26 Mar – 9 Apr
17 May
8-10 wk
4 Jun
12 Jul
0 wk
29 Jun
2 Jul
4 wk after
Dill
Anethum graveolens
5 Jun
17 Jul
0 wk
Wild chives
Allium schoenoprasum
9 – 23 Apr
31 May
6-8 wk
4 Jun
12 Jul
0 wk
5 Jun
2 Jul
0 wk
Spearmint
Mentha spicata
12 Mar – 9 Apr
17 May
8-12 wk
4 Jun
12 Jul
0 wk
29 Jun
2 Jul
4 wk after
Coriander
Coriandrum sativum
4 Jun
6 Aug
0 wk
17 Jun
27 Jul
2 wk after
Garden sage
Salvia officinalis
28 Mar – 11 Apr
2 May
8-10 wk
6 Jun
27 Jun
0 wk
Common thyme
Thymus vulgaris
26 Mar – 9 Apr
7 May
8-10 wk
4 Jun
2 Jul
0 wk
Oregano
Origanum vulgare
9 – 23 Apr
21 May
6-8 wk
4 Jun
2 Jul
0 wk
29 Jun
4 wk after
Parsley
Petroselinum crispum
9 – 23 Apr
21 May
6-8 wk
4 Jun
2 Jul
0 wk
5 Jun
22 Jun
0 wk
Rosemary
Salvia rosmarinus
28 Feb – 28 Mar
24 Mar
10-14 wk
6 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
13 – 20 May
5 Jun
3-4 wk
10 Jun
26 Jun
1 wk after
Cornflower
Centaurea cyanus
4 Jun
12 Jul
0 wk
5 Jun
2 Jul
0 wk
Statice
Limonium sinuatum
Fleece
1 – 15 Apr
22 Apr
8-10 wk
10 Jun
17 Jun
1 wk after
Sweet William
Dianthus barbatus
9 – 23 Apr
6-8 wk
4 Jun
0 wk
14 Jun
1 wk after
Snow-on-the-mountain
Euphorbia marginata
Fleece
15 – 29 Apr
6 May
6-8 wk
10 Jun
17 Jun
1 wk after
24 Jul
7 wk after
Pinnate dahlia
Dahlia × pinnata
20 Apr – 4 May
5 May
6-8 wk
15 Jun
16 Jun
2 wk after
Pinnate dahlia (tubers)
Dahlia × pinnata
Fleece
22 Apr – 20 May
28 May
4-8 wk
17 Jun
25 Jun
2 wk after
17 Jun
2 wk after
Foxglove
Digitalis purpurea
26 Mar – 9 Apr
8-10 wk
4 Jun
0 wk
17 Jun
2 wk after
Busy lizzie
Impatiens walleriana
Fleece
25 Mar – 22 Apr
16 Jun
8-12 wk
17 Jun
11 Aug
2 wk after
Creeping zinnia
Sanvitalia procumbens
Fleece
15 – 29 Apr
16 May
6-8 wk
10 Jun
27 Jun
1 wk after
Hyacinth bean
Dolichos lablab
Season too short
6 – 20 May
4-6 wk
17 Jun
2 wk after
Chinese lantern
Physalis alkekengi
28 Mar – 11 Apr
12 Apr
8-10 wk
6 Jun
7 Jun
0 wk
Love in a mist
Nigella damascena
4 Jun
27 Jun
0 wk
5 Jun
17 Jun
0 wk
Strawflower
Xerochrysum bracteatum
Fleece
15 – 29 Apr
26 Apr
6-8 wk
10 Jun
1 wk after
24 Jul
7 wk after
Purple-top vervain
Verbena bonariensis
14 Mar – 11 Apr
12 Apr
8-12 wk
6 Jun
7 Jun
0 wk
Cardoon
Cynara cardunculus
Greenhouse
12 Mar – 9 Apr
18 Mar
8-12 wk
4 Jun
0 wk
Regal-foxtail
Ptilotus nobilis
Greenhouse
18 Mar – 15 Apr
21 Apr
8-12 wk
10 Jun
16 Jun
1 wk after
Globe amaranth
Gomphrena globosa
Greenhouse
15 – 29 Apr
5 May
6-8 wk
10 Jun
16 Jun
1 wk after
Corn poppy
Papaver rhoeas
4 Jun
12 Jul
0 wk
5 Jun
2 Jul
0 wk
Snapdragon
Antirrhinum majus
12 Mar – 9 Apr
7 May
8-12 wk
4 Jun
2 Jul
0 wk
14 Jun
22 Jun
1 wk after
Flossflower
Ageratum houstonianum
Greenhouse
1 – 15 Apr
17 May
8-10 wk
10 Jun
12 Jul
1 wk after
Sweet pea
Lathyrus odoratus
9 – 30 Apr
28 May
5-8 wk
4 Jun
2 Jul
0 wk
Stock
Matthiola incana
9 – 23 Apr
31 May
6-8 wk
4 Jun
12 Jul
0 wk
17 Jun
2 Jul
2 wk after
Wormwood
Artemisia absinthium
9 – 23 Apr
1 May
6-8 wk
4 Jun
12 Jun
0 wk
17 Jun
2 wk after
Mexican sunflower
Tithonia rotundifolia
Greenhouse
29 Apr – 13 May
14 May
4-6 wk
10 Jun
11 Jun
1 wk after
Garden pansy
Viola × wittrockiana
26 Mar – 9 Apr
17 May
8-10 wk
4 Jun
12 Jul
0 wk
14 Jun
2 Jul
1 wk after
Petunia
Petunia
Fleece
18 Mar – 15 Apr
22 Apr
8-12 wk
10 Jun
17 Jun
1 wk after
Sweet Scabious
Scabiosa atropurpurea
11 – 25 Apr
26 Apr
6-8 wk
6 Jun
7 Jun
0 wk
17 Jul
6 wk after
Common zinnia
Zinnia elegans
Fleece
29 Apr – 13 May
29 May
4-6 wk
10 Jun
26 Jun
1 wk after
Common morning glory
Ipomoea purpurea
Greenhouse
6 – 20 May
5 Jun
3-5 wk
10 Jun
26 Jun
1 wk after
Garden cosmos
Cosmos bipinnatus
Fleece
29 Apr – 13 May
28 May
4-6 wk
10 Jun
25 Jun
1 wk after
29 Jun
4 wk after
Scarlet milkweed
Asclepias curassavica
Greenhouse
25 Mar – 22 Apr
21 May
8-12 wk
17 Jun
16 Jul
2 wk after
Bee balm
Monarda didyma
12 Mar – 9 Apr
17 Apr
8-12 wk
4 Jun
12 Jun
0 wk
29 Jun
4 wk after
Yarrow
Achillea millefolium
9 – 23 Apr
6-8 wk
4 Jun
0 wk
17 Jun
2 wk after
Safflower
Carthamus tinctorius
4 Jun
12 Jun
0 wk
5 Jun
0 wk
Iceland poppy
Papaver nudicaule
Season too short
9 – 23 Apr
21 May
6-8 wk
4 Jun
2 Jul
0 wk
19 May
22 Jun
2 wk before
Bishop's flower
Ammi majus
23 Apr – 7 May
4 Jun
4-6 wk
4 Jun
2 Jul
0 wk
17 Jun
22 Jun
2 wk after
Drumsticks
Pycnosorus globosus
Greenhouse
18 Mar – 1 Apr
27 Mar
10-12 wk
10 Jun
1 wk after
Sunflower
Helianthus annuus
Fleece
13 – 20 May
11 Jun
3-4 wk
10 Jun
2 Jul
1 wk after
17 Jun
22 Jun
2 wk after
China aster
Callistephus chinensis
22 Apr – 6 May
21 May
6-8 wk
17 Jun
2 Jul
2 wk after
17 Jul
6 wk after
Annual phlox
Phlox drummondii
15 – 29 Apr
10 May
6-8 wk
10 Jun
21 Jun
1 wk after
17 Jul
6 wk after
Hollyhock
Alcea rosea
9 – 23 Apr
6-8 wk
4 Jun
0 wk
17 Jun
2 wk after
Alpine delphinium
Delphinium elatum
12 Mar – 9 Apr
17 Apr
8-12 wk
4 Jun
12 Jun
0 wk
29 Jun
4 wk after
African marigold
Tagetes erecta
Fleece
15 – 29 Apr
16 May
6-8 wk
10 Jun
27 Jun
1 wk after
Black-eyed Susan
Rudbeckia hirta
11 – 25 Apr
11 May
6-8 wk
6 Jun
22 Jun
0 wk
17 Jul
6 wk after
Wood sage
Salvia nemorosa
26 Mar – 9 Apr
7 Apr
8-10 wk
4 Jun
0 wk
29 Jun
4 wk after
Black-eyed susan vine
Thunbergia alata
Greenhouse
1 – 29 Apr
15 May
6-10 wk
10 Jun
26 Jun
1 wk after
California goldenpoppy
Eschscholzia californica
4 Jun
12 Jul
0 wk
5 Jun
2 Jul
0 wk
Painted tongue
Salpiglossis sinuata
Fleece
1 – 15 Apr
2 May
8-10 wk
10 Jun
27 Jun
1 wk after
Water forget-me-not
Myosotis scorpioides
9 – 23 Apr
1 May
6-8 wk
4 Jun
12 Jun
0 wk
17 Jun
2 wk after