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Method
Rel. frost
Last spring frost (0°C) 16 May Frost 3 of 4 years · 20 years of data
Frost-free season 112 days 16 May – 5 Sep
Probability that frost is over

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