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Method
Rel. frost
Last spring frost (0°C) 22 May Normal year · 20 years of data
Frost-free season 127 days 22 May – 26 Sep
Probability that frost is over

50% = Half of years are frost-free by this date. More about frost & season →

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