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Method
Rel. frost
Last spring frost (0°C) 28 May Normal year · 20 years of data
Frost-free season 120 days 28 May – 25 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)
9 – 23 Apr
16 Jun
5-7 wk
28 May
21 Jul
0 wk
21 May
11 Jul
1 wk before
Broccoli
Brassica oleracea (Italica-gruppen)
16 – 30 Apr
28 Jun
4-6 wk
28 May
26 Jul
0 wk
21 May
16 Jul
1 wk before
Chili pepper
Capsicum annuum
Greenhouse
16 Mar – 13 Apr
13 Apr
8-12 wk
8 Jun
8 Jun
2 wk after
Curly Kale
Brassica oleracea (Curly Kale-gruppen)
9 – 23 Apr
11 Jun
5-7 wk
28 May
16 Jul
0 wk
16 May
6 Jul
2 wk before
Garden cucumber
Cucumis sativus
5 – 12 Jun
3-4 wk
3 Jul
5 wk after
Florence Fennel
Foeniculum vulgare
29 May – 5 Jun
4-5 wk
3 Jul
5 wk after
3 Jul
5 wk after
Butter bean
Phaseolus lunatus
Season too short
12 – 19 Jun
3-4 wk
10 Jul
6 wk after
Onion
Allium cepa (Cepa-gruppen)
5 Mar – 2 Apr
28 Mar
8-12 wk
28 May
0 wk
7 Jun
1 wk after
Onion (sets)
Allium cepa (Cepa-gruppen)
21 May
12 Jun
1 wk before
21 May
2 Jun
1 wk before
Maize
Zea mays
19 – 26 May
3-4 wk
16 Jun
3 wk after
Swiss Chard
Beta vulgaris (Flavescens-gruppen)
6 – 13 May
5 Jul
3-4 wk
3 Jun
26 Jul
1 wk after
7 Jun
16 Jul
1 wk after
Carrot
Daucus carota subsp. sativus var. sativus
28 May
6 Jul
0 wk
16 May
26 Jun
2 wk before
Palm Kale
Brassica oleracea (Palm Kale-gruppen)
9 – 23 Apr
11 Jun
5-7 wk
28 May
16 Jul
0 wk
16 May
6 Jul
2 wk before
Potato
Solanum tuberosum
21 Apr – 5 May
26 May
4-6 wk
2 Jun
23 Jun
1 wk after
2 Jun
13 Jun
1 wk after
Ornamental Kale
Brassica oleracea (Ornamental-gruppen)
9 – 23 Apr
21 Jun
5-7 wk
28 May
26 Jul
0 wk
21 May
16 Jul
1 wk before
Pumpkin
Cucurbita pepo
5 – 12 Jun
12 Jun
3-4 wk
3 Jul
3 Jul
5 wk after
Beetroot
Beta vulgaris (Conditiva-gruppen)
6 – 13 May
4 Jun
3-4 wk
3 Jun
25 Jun
1 wk after
7 Jun
15 Jun
1 wk after
Red Cabbage
Brassica oleracea (Red Cabbage-gruppen)
16 – 30 Apr
23 Jun
4-6 wk
28 May
21 Jul
0 wk
Lettuce
Lactuca sativa
30 Apr – 7 May
10 Jul
3-4 wk
28 May
31 Jul
0 wk
21 May
21 Jul
1 wk before
Savoy Cabbage
Brassica oleracea (Savoy Cabbage-gruppen)
16 – 30 Apr
23 Jun
4-6 wk
28 May
21 Jul
0 wk
Shallot (bulbs)
Allium cepa (Aggregatum-gruppen)
18 Apr – 2 May
30 May
2-4 wk
16 May
13 Jun
2 wk before
16 May
3 Jun
2 wk before
Shallot (sets)
Allium cepa (Aggregatum-gruppen)
21 May
12 Jun
1 wk before
21 May
2 Jun
1 wk before
Spinach
Spinacia oleracea
30 Apr – 7 May
25 Jul
3-4 wk
28 May
15 Aug
0 wk
10 May
5 Aug
3 wk before
Sweet potato
Ipomoea batatas
24 Jun – 8 Jul
4-6 wk
5 Aug
10 wk after
Garden tomato
Solanum lycopersicum
21 Apr – 5 May
6-8 wk
16 Jun
3 wk after
Tomatillo
Physalis ixocarpa
Common Bean
Phaseolus vulgaris
19 May – 2 Jun
14 Jun
2-4 wk
16 Jun
28 Jun
3 wk after
3 Jul
5 wk after
White Cabbage
Brassica oleracea (White Cabbage-gruppen)
16 – 30 Apr
23 Jun
4-6 wk
28 May
21 Jul
0 wk
Garden pea
Pisum sativum
30 Apr – 7 May
25 Jun
3-4 wk
28 May
16 Jul
0 wk
21 May
6 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
22 May – 5 Jun
4-6 wk
3 Jul
5 wk after
Lemon balm
Melissa officinalis
19 Mar – 2 Apr
21 May
8-10 wk
28 May
16 Jul
0 wk
18 Jun
6 Jul
3 wk after
Dill
Anethum graveolens
21 May
26 Jul
1 wk before
Wild chives
Allium schoenoprasum
2 – 16 Apr
4 Jun
6-8 wk
28 May
16 Jul
0 wk
21 May
6 Jul
1 wk before
Spearmint
Mentha spicata
5 Mar – 2 Apr
21 May
8-12 wk
28 May
16 Jul
0 wk
18 Jun
6 Jul
3 wk after
Coriander
Coriandrum sativum
28 May
15 Aug
0 wk
7 Jun
5 Aug
1 wk after
Garden sage
Salvia officinalis
25 Mar – 8 Apr
6 May
8-10 wk
3 Jun
1 Jul
1 wk after
Common thyme
Thymus vulgaris
19 Mar – 2 Apr
11 May
8-10 wk
28 May
6 Jul
0 wk
Oregano
Origanum vulgare
2 – 16 Apr
25 May
6-8 wk
28 May
6 Jul
0 wk
18 Jun
26 Jun
3 wk after
Parsley
Petroselinum crispum
2 – 16 Apr
25 May
6-8 wk
28 May
6 Jul
0 wk
21 May
26 Jun
1 wk before
Rosemary
Salvia rosmarinus
25 Feb – 25 Mar
31 Mar
10-14 wk
3 Jun
9 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
5 – 12 Jun
3-4 wk
3 Jul
5 wk after
Cornflower
Centaurea cyanus
28 May
16 Jul
0 wk
21 May
6 Jul
1 wk before
Statice
Limonium sinuatum
7 – 21 Apr
28 Apr
8-10 wk
16 Jun
23 Jun
3 wk after
Sweet William
Dianthus barbatus
2 – 16 Apr
6-8 wk
28 May
0 wk
2 Jun
1 wk after
Snow-on-the-mountain
Euphorbia marginata
21 Apr – 5 May
12 May
6-8 wk
16 Jun
23 Jun
3 wk after
5 Aug
10 wk after
Pinnate dahlia
Dahlia × pinnata
16 – 30 Apr
13 May
6-8 wk
11 Jun
24 Jun
2 wk after
Pinnate dahlia (tubers)
Dahlia × pinnata
23 Apr – 21 May
27 May
4-8 wk
18 Jun
24 Jun
3 wk after
18 Jun
3 wk after
Foxglove
Digitalis purpurea
19 Mar – 2 Apr
8-10 wk
28 May
0 wk
7 Jun
1 wk after
Busy lizzie
Impatiens walleriana
10 Apr – 8 May
17 Jun
8-12 wk
3 Jul
12 Aug
5 wk after
Creeping zinnia
Sanvitalia procumbens
21 Apr – 5 May
22 May
6-8 wk
16 Jun
3 Jul
3 wk after
Hyacinth bean
Dolichos lablab
Season too short
5 – 19 May
4-6 wk
16 Jun
3 wk after
Chinese lantern
Physalis alkekengi
25 Mar – 8 Apr
21 Apr
8-10 wk
3 Jun
16 Jun
1 wk after
Love in a mist
Nigella damascena
28 May
1 Jul
0 wk
21 May
21 Jun
1 wk before
Strawflower
Xerochrysum bracteatum
21 Apr – 5 May
2 May
6-8 wk
16 Jun
3 wk after
5 Aug
10 wk after
Purple-top vervain
Verbena bonariensis
11 Mar – 8 Apr
21 Apr
8-12 wk
3 Jun
16 Jun
1 wk after
Cardoon
Cynara cardunculus
Fleece
16 Mar – 13 Apr
22 Mar
8-12 wk
8 Jun
2 wk after
Regal-foxtail
Ptilotus nobilis
10 Apr – 8 May
13 Apr
8-12 wk
3 Jul
5 wk after
Globe amaranth
Gomphrena globosa
8 – 22 May
6-8 wk
3 Jul
5 wk after
Corn poppy
Papaver rhoeas
28 May
16 Jul
0 wk
21 May
6 Jul
1 wk before
Snapdragon
Antirrhinum majus
5 Mar – 2 Apr
11 May
8-12 wk
28 May
6 Jul
0 wk
2 Jun
26 Jun
1 wk after
Flossflower
Ageratum houstonianum
24 Apr – 8 May
8 May
8-10 wk
3 Jul
3 Jul
5 wk after
Sweet pea
Lathyrus odoratus
2 – 23 Apr
1 Jun
5-8 wk
28 May
6 Jul
0 wk
Stock
Matthiola incana
2 – 16 Apr
4 Jun
6-8 wk
28 May
16 Jul
0 wk
7 Jun
6 Jul
1 wk after
Wormwood
Artemisia absinthium
2 – 16 Apr
5 May
6-8 wk
28 May
16 Jun
0 wk
7 Jun
1 wk after
Mexican sunflower
Tithonia rotundifolia
Fleece
5 – 19 May
15 May
4-6 wk
16 Jun
3 wk after
Garden pansy
Viola × wittrockiana
19 Mar – 2 Apr
21 May
8-10 wk
28 May
16 Jul
0 wk
2 Jun
6 Jul
1 wk after
Petunia
Petunia
24 Mar – 21 Apr
28 Apr
8-12 wk
16 Jun
23 Jun
3 wk after
Sweet Scabious
Scabiosa atropurpurea
8 – 22 Apr
5 May
6-8 wk
3 Jun
16 Jun
1 wk after
3 Jul
5 wk after
Common zinnia
Zinnia elegans
5 – 19 May
30 May
4-6 wk
16 Jun
27 Jun
3 wk after
Common morning glory
Ipomoea purpurea
29 May – 12 Jun
3-5 wk
3 Jul
5 wk after
Garden cosmos
Cosmos bipinnatus
5 – 19 May
27 May
4-6 wk
16 Jun
24 Jun
3 wk after
3 Jul
5 wk after
Scarlet milkweed
Asclepias curassavica
Fleece
10 Apr – 8 May
22 May
8-12 wk
3 Jul
17 Jul
5 wk after
Bee balm
Monarda didyma
5 Mar – 2 Apr
21 Apr
8-12 wk
28 May
16 Jun
0 wk
18 Jun
3 wk after
Yarrow
Achillea millefolium
2 – 16 Apr
5 Apr
6-8 wk
28 May
0 wk
7 Jun
1 wk after
Safflower
Carthamus tinctorius
28 May
16 Jun
0 wk
21 May
6 Jun
1 wk before
Iceland poppy
Papaver nudicaule
Season too short
2 – 16 Apr
25 May
6-8 wk
28 May
6 Jul
0 wk
19 Apr
26 Jun
6 wk before
Bishop's flower
Ammi majus
16 – 30 Apr
8 Jun
4-6 wk
28 May
6 Jul
0 wk
7 Jun
26 Jun
1 wk after
Drumsticks
Pycnosorus globosus
Fleece
24 Mar – 7 Apr
26 Mar
10-12 wk
16 Jun
3 wk after
Sunflower
Helianthus annuus
19 – 26 May
8 Jun
3-4 wk
16 Jun
29 Jun
3 wk after
18 Jun
19 Jun
3 wk after
China aster
Callistephus chinensis
21 Apr – 5 May
28 May
6-8 wk
16 Jun
9 Jul
3 wk after
3 Jul
5 wk after
Annual phlox
Phlox drummondii
13 – 27 Apr
22 May
6-8 wk
8 Jun
3 Jul
2 wk after
3 Jul
5 wk after
Hollyhock
Alcea rosea
2 – 16 Apr
6-8 wk
28 May
0 wk
7 Jun
1 wk after
Alpine delphinium
Delphinium elatum
5 Mar – 2 Apr
21 Apr
8-12 wk
28 May
16 Jun
0 wk
18 Jun
3 wk after
African marigold
Tagetes erecta
21 Apr – 5 May
22 May
6-8 wk
16 Jun
3 Jul
3 wk after
Black-eyed Susan
Rudbeckia hirta
8 – 22 Apr
18 May
6-8 wk
3 Jun
29 Jun
1 wk after
3 Jul
5 wk after
Wood sage
Salvia nemorosa
19 Mar – 2 Apr
11 Apr
8-10 wk
28 May
6 Jun
0 wk
18 Jun
3 wk after
Black-eyed susan vine
Thunbergia alata
24 Apr – 22 May
7 May
6-10 wk
3 Jul
5 wk after
California goldenpoppy
Eschscholzia californica
28 May
16 Jul
0 wk
21 May
6 Jul
1 wk before
Painted tongue
Salpiglossis sinuata
7 – 21 Apr
29 Apr
8-10 wk
16 Jun
24 Jun
3 wk after
Water forget-me-not
Myosotis scorpioides
2 – 16 Apr
5 May
6-8 wk
28 May
16 Jun
0 wk
7 Jun
1 wk after