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Method
Rel. frost
Last spring frost (0°C) 25 May Normal year · 20 years of data
Frost-free season 112 days 25 May – 14 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)
6 – 20 Apr
13 Jun
5-7 wk
25 May
18 Jul
0 wk
26 May
8 Jul
0 wk
Broccoli
Brassica oleracea (Italica-gruppen)
13 – 27 Apr
25 Jun
4-6 wk
25 May
23 Jul
0 wk
26 May
13 Jul
0 wk
Chili pepper
Capsicum annuum
Greenhouse
13 Mar – 10 Apr
30 Mar
8-12 wk
5 Jun
2 wk after
Curly Kale
Brassica oleracea (Curly Kale-gruppen)
6 – 20 Apr
8 Jun
5-7 wk
25 May
13 Jul
0 wk
25 May
3 Jul
0 wk
Garden cucumber
Cucumis sativus
Fleece
17 – 24 May
24 May
3-4 wk
14 Jun
14 Jun
3 wk after
Florence Fennel
Foeniculum vulgare
24 – 31 May
4-5 wk
28 Jun
5 wk after
7 Jul
6 wk after
Butter bean
Phaseolus lunatus
Season too short
7 – 14 Jun
3-4 wk
5 Jul
6 wk after
Onion
Allium cepa (Cepa-gruppen)
2 – 30 Mar
20 Mar
8-12 wk
25 May
0 wk
7 Jun
2 wk after
Onion (sets)
Allium cepa (Cepa-gruppen)
26 May
4 Jun
0 wk
26 May
0 wk
Maize
Zea mays
Fleece
8 – 15 May
14 May
3-4 wk
5 Jun
2 wk after
Swiss Chard
Beta vulgaris (Flavescens-gruppen)
3 – 10 May
2 Jul
3-4 wk
31 May
23 Jul
1 wk after
7 Jun
13 Jul
2 wk after
Carrot
Daucus carota subsp. sativus var. sativus
25 May
3 Jul
0 wk
25 May
23 Jun
0 wk
Palm Kale
Brassica oleracea (Palm Kale-gruppen)
6 – 20 Apr
8 Jun
5-7 wk
25 May
13 Jul
0 wk
25 May
3 Jul
0 wk
Potato
Solanum tuberosum
23 Apr – 7 May
19 May
4-6 wk
4 Jun
16 Jun
1 wk after
4 Jun
6 Jun
1 wk after
Ornamental Kale
Brassica oleracea (Ornamental-gruppen)
6 – 20 Apr
18 Jun
5-7 wk
25 May
23 Jul
0 wk
26 May
13 Jul
0 wk
Pumpkin
Cucurbita pepo
31 May – 7 Jun
3-4 wk
28 Jun
5 wk after
Beetroot
Beta vulgaris (Conditiva-gruppen)
3 – 10 May
1 Jun
3-4 wk
31 May
22 Jun
1 wk after
7 Jun
12 Jun
2 wk after
Red Cabbage
Brassica oleracea (Red Cabbage-gruppen)
13 – 27 Apr
20 Jun
4-6 wk
25 May
18 Jul
0 wk
Lettuce
Lactuca sativa
27 Apr – 4 May
7 Jul
3-4 wk
25 May
28 Jul
0 wk
26 May
18 Jul
0 wk
Savoy Cabbage
Brassica oleracea (Savoy Cabbage-gruppen)
13 – 27 Apr
20 Jun
4-6 wk
25 May
18 Jul
0 wk
Shallot (bulbs)
Allium cepa (Aggregatum-gruppen)
27 Apr – 11 May
25 May
2-4 wk
25 May
8 Jun
0 wk
25 May
29 May
0 wk
Shallot (sets)
Allium cepa (Aggregatum-gruppen)
26 May
4 Jun
0 wk
26 May
0 wk
Spinach
Spinacia oleracea
27 Apr – 4 May
22 Jul
3-4 wk
25 May
12 Aug
0 wk
22 May
2 Aug
0 wk
Sweet potato
Ipomoea batatas
19 Jun – 3 Jul
4-6 wk
31 Jul
10 wk after
Garden tomato
Solanum lycopersicum
Fleece
10 – 24 Apr
23 Apr
6-8 wk
5 Jun
2 wk after
Tomatillo
Physalis ixocarpa
Common Bean
Phaseolus vulgaris
17 – 31 May
31 May
2-4 wk
14 Jun
14 Jun
3 wk after
7 Jul
6 wk after
White Cabbage
Brassica oleracea (White Cabbage-gruppen)
13 – 27 Apr
20 Jun
4-6 wk
25 May
18 Jul
0 wk
Garden pea
Pisum sativum
27 Apr – 4 May
22 Jun
3-4 wk
25 May
13 Jul
0 wk
26 May
3 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
3 – 17 May
23 May
4-6 wk
14 Jun
20 Jun
3 wk after
Lemon balm
Melissa officinalis
16 – 30 Mar
18 May
8-10 wk
25 May
13 Jul
0 wk
19 Jun
3 Jul
4 wk after
Dill
Anethum graveolens
26 May
23 Jul
0 wk
Wild chives
Allium schoenoprasum
30 Mar – 13 Apr
1 Jun
6-8 wk
25 May
13 Jul
0 wk
26 May
3 Jul
0 wk
Spearmint
Mentha spicata
2 – 30 Mar
18 May
8-12 wk
25 May
13 Jul
0 wk
19 Jun
3 Jul
4 wk after
Coriander
Coriandrum sativum
25 May
12 Aug
0 wk
7 Jun
2 Aug
2 wk after
Garden sage
Salvia officinalis
22 Mar – 5 Apr
3 May
8-10 wk
31 May
28 Jun
1 wk after
Common thyme
Thymus vulgaris
16 – 30 Mar
8 May
8-10 wk
25 May
3 Jul
0 wk
Oregano
Origanum vulgare
30 Mar – 13 Apr
22 May
6-8 wk
25 May
3 Jul
0 wk
19 Jun
23 Jun
4 wk after
Parsley
Petroselinum crispum
30 Mar – 13 Apr
22 May
6-8 wk
25 May
3 Jul
0 wk
26 May
23 Jun
0 wk
Rosemary
Salvia rosmarinus
22 Feb – 22 Mar
28 Mar
10-14 wk
31 May
6 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
Fleece
17 – 24 May
30 May
3-4 wk
14 Jun
20 Jun
3 wk after
Cornflower
Centaurea cyanus
25 May
13 Jul
0 wk
26 May
3 Jul
0 wk
Statice
Limonium sinuatum
5 – 19 Apr
21 Apr
8-10 wk
14 Jun
16 Jun
3 wk after
Sweet William
Dianthus barbatus
30 Mar – 13 Apr
6-8 wk
25 May
0 wk
4 Jun
1 wk after
Snow-on-the-mountain
Euphorbia marginata
19 Apr – 3 May
5 May
6-8 wk
14 Jun
16 Jun
3 wk after
31 Jul
10 wk after
Pinnate dahlia
Dahlia × pinnata
14 – 28 Apr
10 May
6-8 wk
9 Jun
21 Jun
2 wk after
Pinnate dahlia (tubers)
Dahlia × pinnata
24 Apr – 22 May
24 May
4-8 wk
19 Jun
21 Jun
4 wk after
19 Jun
4 wk after
Foxglove
Digitalis purpurea
16 – 30 Mar
8-10 wk
25 May
0 wk
7 Jun
2 wk after
Busy lizzie
Impatiens walleriana
5 Apr – 3 May
10 Jun
8-12 wk
28 Jun
5 Aug
5 wk after
Creeping zinnia
Sanvitalia procumbens
19 Apr – 3 May
15 May
6-8 wk
14 Jun
26 Jun
3 wk after
Hyacinth bean
Dolichos lablab
Season too short
3 – 17 May
4-6 wk
14 Jun
3 wk after
Chinese lantern
Physalis alkekengi
22 Mar – 5 Apr
18 Apr
8-10 wk
31 May
13 Jun
1 wk after
Love in a mist
Nigella damascena
25 May
28 Jun
0 wk
26 May
18 Jun
0 wk
Strawflower
Xerochrysum bracteatum
19 Apr – 3 May
25 Apr
6-8 wk
14 Jun
3 wk after
31 Jul
10 wk after
Purple-top vervain
Verbena bonariensis
8 Mar – 5 Apr
18 Apr
8-12 wk
31 May
13 Jun
1 wk after
Cardoon
Cynara cardunculus
Fleece
13 Mar – 10 Apr
19 Mar
8-12 wk
5 Jun
2 wk after
Regal-foxtail
Ptilotus nobilis
Fleece
22 Mar – 19 Apr
15 Apr
8-12 wk
14 Jun
3 wk after
Globe amaranth
Gomphrena globosa
Fleece
19 Apr – 3 May
29 Apr
6-8 wk
14 Jun
3 wk after
Corn poppy
Papaver rhoeas
25 May
13 Jul
0 wk
26 May
3 Jul
0 wk
Snapdragon
Antirrhinum majus
2 – 30 Mar
8 May
8-12 wk
25 May
3 Jul
0 wk
4 Jun
23 Jun
1 wk after
Flossflower
Ageratum houstonianum
19 Apr – 3 May
1 May
8-10 wk
28 Jun
5 wk after
Sweet pea
Lathyrus odoratus
30 Mar – 20 Apr
29 May
5-8 wk
25 May
3 Jul
0 wk
Stock
Matthiola incana
30 Mar – 13 Apr
1 Jun
6-8 wk
25 May
13 Jul
0 wk
7 Jun
3 Jul
2 wk after
Wormwood
Artemisia absinthium
30 Mar – 13 Apr
2 May
6-8 wk
25 May
13 Jun
0 wk
7 Jun
2 wk after
Mexican sunflower
Tithonia rotundifolia
Fleece
3 – 17 May
8 May
4-6 wk
14 Jun
3 wk after
Garden pansy
Viola × wittrockiana
16 – 30 Mar
18 May
8-10 wk
25 May
13 Jul
0 wk
4 Jun
3 Jul
1 wk after
Petunia
Petunia
22 Mar – 19 Apr
21 Apr
8-12 wk
14 Jun
16 Jun
3 wk after
Sweet Scabious
Scabiosa atropurpurea
5 – 19 Apr
2 May
6-8 wk
31 May
13 Jun
1 wk after
7 Jul
6 wk after
Common zinnia
Zinnia elegans
3 – 17 May
23 May
4-6 wk
14 Jun
20 Jun
3 wk after
Common morning glory
Ipomoea purpurea
Fleece
10 – 24 May
30 May
3-5 wk
14 Jun
20 Jun
3 wk after
Garden cosmos
Cosmos bipinnatus
3 – 17 May
24 May
4-6 wk
14 Jun
21 Jun
3 wk after
7 Jul
6 wk after
Scarlet milkweed
Asclepias curassavica
Fleece
5 Apr – 3 May
15 May
8-12 wk
28 Jun
10 Jul
5 wk after
Bee balm
Monarda didyma
2 – 30 Mar
18 Apr
8-12 wk
25 May
13 Jun
0 wk
19 Jun
4 wk after
Yarrow
Achillea millefolium
30 Mar – 13 Apr
2 Apr
6-8 wk
25 May
0 wk
7 Jun
2 wk after
Safflower
Carthamus tinctorius
25 May
13 Jun
0 wk
26 May
3 Jun
0 wk
Iceland poppy
Papaver nudicaule
Season too short
30 Mar – 13 Apr
22 May
6-8 wk
25 May
3 Jul
0 wk
9 May
23 Jun
2 wk before
Bishop's flower
Ammi majus
13 – 27 Apr
5 Jun
4-6 wk
25 May
3 Jul
0 wk
7 Jun
23 Jun
2 wk after
Drumsticks
Pycnosorus globosus
Greenhouse
13 – 27 Mar
4 Apr
10-12 wk
5 Jun
13 Jun
2 wk after
Sunflower
Helianthus annuus
17 – 24 May
5 Jun
3-4 wk
14 Jun
26 Jun
3 wk after
19 Jun
4 wk after
China aster
Callistephus chinensis
19 Apr – 3 May
25 May
6-8 wk
14 Jun
6 Jul
3 wk after
7 Jul
6 wk after
Annual phlox
Phlox drummondii
10 – 24 Apr
15 May
6-8 wk
5 Jun
26 Jun
2 wk after
7 Jul
6 wk after
Hollyhock
Alcea rosea
30 Mar – 13 Apr
6-8 wk
25 May
0 wk
7 Jun
2 wk after
Alpine delphinium
Delphinium elatum
2 – 30 Mar
18 Apr
8-12 wk
25 May
13 Jun
0 wk
19 Jun
4 wk after
African marigold
Tagetes erecta
19 Apr – 3 May
15 May
6-8 wk
14 Jun
26 Jun
3 wk after
Black-eyed Susan
Rudbeckia hirta
5 – 19 Apr
15 May
6-8 wk
31 May
26 Jun
1 wk after
7 Jul
6 wk after
Wood sage
Salvia nemorosa
16 – 30 Mar
8 Apr
8-10 wk
25 May
3 Jun
0 wk
19 Jun
4 wk after
Black-eyed susan vine
Thunbergia alata
Fleece
5 Apr – 3 May
9 May
6-10 wk
14 Jun
20 Jun
3 wk after
California goldenpoppy
Eschscholzia californica
25 May
13 Jul
0 wk
26 May
3 Jul
0 wk
Painted tongue
Salpiglossis sinuata
5 – 19 Apr
22 Apr
8-10 wk
14 Jun
17 Jun
3 wk after
Water forget-me-not
Myosotis scorpioides
30 Mar – 13 Apr
2 May
6-8 wk
25 May
13 Jun
0 wk
7 Jun
2 wk after