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Method
Rel. frost
Last spring frost (0°C) 23 May Frost 3 of 4 years · 20 years of data
Frost-free season 101 days 23 May – 1 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)
4 – 18 Apr
13 Jun
5-7 wk
23 May
18 Jul
0 wk
24 May
8 Jul
0 wk
Broccoli
Brassica oleracea (Italica-gruppen)
11 – 25 Apr
25 Jun
4-6 wk
23 May
23 Jul
0 wk
24 May
13 Jul
0 wk
Chili pepper
Capsicum annuum
Season too short
6 Mar – 3 Apr
26 Mar
8-12 wk
29 May
1 wk after
Curly Kale
Brassica oleracea (Curly Kale-gruppen)
4 – 18 Apr
8 Jun
5-7 wk
23 May
13 Jul
0 wk
23 May
3 Jul
0 wk
Garden cucumber
Cucumis sativus
Fleece
8 – 15 May
20 May
3-4 wk
5 Jun
10 Jun
2 wk after
Florence Fennel
Foeniculum vulgare
Fleece
1 – 8 May
24 May
4-5 wk
5 Jun
21 Jun
2 wk after
17 Jun
4 wk after
Butter bean
Phaseolus lunatus
Season too short
3 – 10 Jun
3-4 wk
1 Jul
6 wk after
Onion
Allium cepa (Cepa-gruppen)
28 Feb – 28 Mar
17 Mar
8-12 wk
23 May
0 wk
5 Jun
2 wk after
Onion (sets)
Allium cepa (Cepa-gruppen)
24 May
1 Jun
0 wk
24 May
0 wk
Maize
Zea mays
Fleece
1 – 8 May
10 May
3-4 wk
29 May
31 May
1 wk after
Swiss Chard
Beta vulgaris (Flavescens-gruppen)
27 Apr – 4 May
20 Jun
3-4 wk
25 May
11 Jul
0 wk
5 Jun
1 Jul
2 wk after
Carrot
Daucus carota subsp. sativus var. sativus
23 May
29 Jun
0 wk
23 May
19 Jun
0 wk
Palm Kale
Brassica oleracea (Palm Kale-gruppen)
4 – 18 Apr
8 Jun
5-7 wk
23 May
13 Jul
0 wk
23 May
3 Jul
0 wk
Potato
Solanum tuberosum
21 Apr – 5 May
13 May
4-6 wk
2 Jun
10 Jun
1 wk after
2 Jun
1 wk after
Ornamental Kale
Brassica oleracea (Ornamental-gruppen)
4 – 18 Apr
14 Jun
5-7 wk
23 May
19 Jul
0 wk
24 May
9 Jul
0 wk
Pumpkin
Cucurbita pepo
Fleece
8 – 15 May
4 Jun
3-4 wk
5 Jun
25 Jun
2 wk after
Beetroot
Beta vulgaris (Conditiva-gruppen)
27 Apr – 4 May
21 May
3-4 wk
25 May
11 Jun
0 wk
5 Jun
2 wk after
Red Cabbage
Brassica oleracea (Red Cabbage-gruppen)
11 – 25 Apr
20 Jun
4-6 wk
23 May
18 Jul
0 wk
Lettuce
Lactuca sativa
25 Apr – 2 May
3 Jul
3-4 wk
23 May
24 Jul
0 wk
24 May
14 Jul
0 wk
Savoy Cabbage
Brassica oleracea (Savoy Cabbage-gruppen)
11 – 25 Apr
20 Jun
4-6 wk
23 May
18 Jul
0 wk
Shallot (bulbs)
Allium cepa (Aggregatum-gruppen)
25 Apr – 9 May
23 May
2-4 wk
23 May
6 Jun
0 wk
23 May
27 May
0 wk
Shallot (sets)
Allium cepa (Aggregatum-gruppen)
24 May
1 Jun
0 wk
24 May
0 wk
Spinach
Spinacia oleracea
25 Apr – 2 May
22 Jul
3-4 wk
23 May
12 Aug
0 wk
20 May
2 Aug
0 wk
Sweet potato
Ipomoea batatas
17 Jun – 1 Jul
4-6 wk
29 Jul
10 wk after
Garden tomato
Solanum lycopersicum
Fleece
3 – 17 Apr
19 Apr
6-8 wk
29 May
31 May
1 wk after
Tomatillo
Physalis ixocarpa
Common Bean
Phaseolus vulgaris
8 – 22 May
27 May
2-4 wk
5 Jun
10 Jun
2 wk after
5 Jul
6 wk after
White Cabbage
Brassica oleracea (White Cabbage-gruppen)
11 – 25 Apr
20 Jun
4-6 wk
23 May
18 Jul
0 wk
Garden pea
Pisum sativum
25 Apr – 2 May
18 Jun
3-4 wk
23 May
9 Jul
0 wk
24 May
29 Jun
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
13 May
4-6 wk
5 Jun
10 Jun
2 wk after
Lemon balm
Melissa officinalis
14 – 28 Mar
14 May
8-10 wk
23 May
9 Jul
0 wk
17 Jun
29 Jun
4 wk after
Dill
Anethum graveolens
24 May
11 Jul
0 wk
Wild chives
Allium schoenoprasum
28 Mar – 11 Apr
1 Jun
6-8 wk
23 May
13 Jul
0 wk
24 May
3 Jul
0 wk
Spearmint
Mentha spicata
28 Feb – 28 Mar
18 May
8-12 wk
23 May
13 Jul
0 wk
17 Jun
3 Jul
4 wk after
Coriander
Coriandrum sativum
23 May
31 Jul
0 wk
5 Jun
21 Jul
2 wk after
Garden sage
Salvia officinalis
16 – 30 Mar
3 May
8-10 wk
25 May
28 Jun
0 wk
Common thyme
Thymus vulgaris
14 – 28 Mar
8 May
8-10 wk
23 May
3 Jul
0 wk
Oregano
Origanum vulgare
28 Mar – 11 Apr
22 May
6-8 wk
23 May
3 Jul
0 wk
17 Jun
23 Jun
4 wk after
Parsley
Petroselinum crispum
28 Mar – 11 Apr
22 May
6-8 wk
23 May
3 Jul
0 wk
24 May
23 Jun
0 wk
Rosemary
Salvia rosmarinus
16 Feb – 16 Mar
13 Mar
10-14 wk
25 May
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
8 – 15 May
20 May
3-4 wk
5 Jun
10 Jun
2 wk after
Cornflower
Centaurea cyanus
23 May
13 Jul
0 wk
24 May
3 Jul
0 wk
Statice
Limonium sinuatum
27 Mar – 10 Apr
15 Apr
8-10 wk
5 Jun
10 Jun
2 wk after
Sweet William
Dianthus barbatus
28 Mar – 11 Apr
6-8 wk
23 May
0 wk
2 Jun
1 wk after
Snow-on-the-mountain
Euphorbia marginata
10 – 24 Apr
29 Apr
6-8 wk
5 Jun
10 Jun
2 wk after
29 Jul
10 wk after
Pinnate dahlia
Dahlia × pinnata
8 – 22 Apr
6 May
6-8 wk
3 Jun
17 Jun
2 wk after
Pinnate dahlia (tubers)
Dahlia × pinnata
22 Apr – 20 May
20 May
4-8 wk
17 Jun
17 Jun
4 wk after
17 Jun
4 wk after
Foxglove
Digitalis purpurea
14 – 28 Mar
8-10 wk
23 May
0 wk
5 Jun
2 wk after
Busy lizzie
Impatiens walleriana
1 – 29 Apr
31 May
8-12 wk
24 Jun
26 Jul
5 wk after
Creeping zinnia
Sanvitalia procumbens
10 – 24 Apr
9 May
6-8 wk
5 Jun
20 Jun
2 wk after
Hyacinth bean
Dolichos lablab
Season too short
24 Apr – 8 May
4-6 wk
5 Jun
2 wk after
Chinese lantern
Physalis alkekengi
16 – 30 Mar
6 Apr
8-10 wk
25 May
1 Jun
0 wk
Love in a mist
Nigella damascena
23 May
24 Jun
0 wk
24 May
14 Jun
0 wk
Strawflower
Xerochrysum bracteatum
Fleece
3 – 17 Apr
1 May
6-8 wk
29 May
12 Jun
1 wk after
12 Jul
7 wk after
Purple-top vervain
Verbena bonariensis
2 – 30 Mar
6 Apr
8-12 wk
25 May
1 Jun
0 wk
Cardoon
Cynara cardunculus
Season too short
28 Feb – 28 Mar
19 Mar
8-12 wk
23 May
0 wk
Regal-foxtail
Ptilotus nobilis
Greenhouse
6 Mar – 3 Apr
22 Apr
8-12 wk
29 May
17 Jun
1 wk after
Globe amaranth
Gomphrena globosa
Greenhouse
3 – 17 Apr
6 May
6-8 wk
29 May
17 Jun
1 wk after
Corn poppy
Papaver rhoeas
23 May
9 Jul
0 wk
24 May
29 Jun
0 wk
Snapdragon
Antirrhinum majus
28 Feb – 28 Mar
4 May
8-12 wk
23 May
29 Jun
0 wk
2 Jun
19 Jun
1 wk after
Flossflower
Ageratum houstonianum
15 – 29 Apr
25 Apr
8-10 wk
24 Jun
5 wk after
Sweet pea
Lathyrus odoratus
28 Mar – 18 Apr
29 May
5-8 wk
23 May
3 Jul
0 wk
Stock
Matthiola incana
28 Mar – 11 Apr
28 May
6-8 wk
23 May
9 Jul
0 wk
5 Jun
29 Jun
2 wk after
Wormwood
Artemisia absinthium
28 Mar – 11 Apr
2 May
6-8 wk
23 May
13 Jun
0 wk
5 Jun
2 wk after
Mexican sunflower
Tithonia rotundifolia
Greenhouse
17 Apr – 1 May
15 May
4-6 wk
29 May
12 Jun
1 wk after
Garden pansy
Viola × wittrockiana
14 – 28 Mar
18 May
8-10 wk
23 May
13 Jul
0 wk
2 Jun
3 Jul
1 wk after
Petunia
Petunia
13 Mar – 10 Apr
15 Apr
8-12 wk
5 Jun
10 Jun
2 wk after
Sweet Scabious
Scabiosa atropurpurea
30 Mar – 13 Apr
20 Apr
6-8 wk
25 May
1 Jun
0 wk
5 Jul
6 wk after
Common zinnia
Zinnia elegans
24 Apr – 8 May
13 May
4-6 wk
5 Jun
10 Jun
2 wk after
Common morning glory
Ipomoea purpurea
Fleece
1 – 15 May
20 May
3-5 wk
5 Jun
10 Jun
2 wk after
Garden cosmos
Cosmos bipinnatus
24 Apr – 8 May
20 May
4-6 wk
5 Jun
17 Jun
2 wk after
5 Jul
6 wk after
Scarlet milkweed
Asclepias curassavica
Fleece
1 – 29 Apr
5 May
8-12 wk
24 Jun
30 Jun
5 wk after
Bee balm
Monarda didyma
28 Feb – 28 Mar
14 Apr
8-12 wk
23 May
9 Jun
0 wk
17 Jun
4 wk after
Yarrow
Achillea millefolium
28 Mar – 11 Apr
2 Apr
6-8 wk
23 May
0 wk
5 Jun
2 wk after
Safflower
Carthamus tinctorius
23 May
13 Jun
0 wk
24 May
3 Jun
0 wk
Iceland poppy
Papaver nudicaule
Season too short
28 Mar – 11 Apr
22 May
6-8 wk
23 May
3 Jul
0 wk
7 May
23 Jun
2 wk before
Bishop's flower
Ammi majus
11 – 25 Apr
1 Jun
4-6 wk
23 May
29 Jun
0 wk
5 Jun
19 Jun
2 wk after
Drumsticks
Pycnosorus globosus
Greenhouse
6 – 20 Mar
25 Mar
10-12 wk
29 May
3 Jun
1 wk after
Sunflower
Helianthus annuus
8 – 15 May
21 May
3-4 wk
5 Jun
11 Jun
2 wk after
17 Jun
4 wk after
China aster
Callistephus chinensis
10 – 24 Apr
10 May
6-8 wk
5 Jun
21 Jun
2 wk after
5 Jul
6 wk after
Annual phlox
Phlox drummondii
3 – 17 Apr
9 May
6-8 wk
29 May
20 Jun
1 wk after
5 Jul
6 wk after
Hollyhock
Alcea rosea
28 Mar – 11 Apr
6-8 wk
23 May
0 wk
5 Jun
2 wk after
Alpine delphinium
Delphinium elatum
28 Feb – 28 Mar
14 Apr
8-12 wk
23 May
9 Jun
0 wk
17 Jun
4 wk after
African marigold
Tagetes erecta
10 – 24 Apr
9 May
6-8 wk
5 Jun
20 Jun
2 wk after
Black-eyed Susan
Rudbeckia hirta
30 Mar – 13 Apr
30 Apr
6-8 wk
25 May
11 Jun
0 wk
5 Jul
6 wk after
Wood sage
Salvia nemorosa
14 – 28 Mar
4 Apr
8-10 wk
23 May
30 May
0 wk
17 Jun
4 wk after
Black-eyed susan vine
Thunbergia alata
Fleece
27 Mar – 24 Apr
29 Apr
6-10 wk
5 Jun
10 Jun
2 wk after
California goldenpoppy
Eschscholzia californica
23 May
5 Jul
0 wk
24 May
25 Jun
0 wk
Painted tongue
Salpiglossis sinuata
Fleece
20 Mar – 3 Apr
26 Apr
8-10 wk
29 May
21 Jun
1 wk after
Water forget-me-not
Myosotis scorpioides
28 Mar – 11 Apr
2 May
6-8 wk
23 May
13 Jun
0 wk
5 Jun
2 wk after