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Method
Rel. frost
Last spring frost (0°C) 24 May Normal year · 20 years of data
Frost-free season 121 days 24 May – 22 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)
5 – 19 Apr
18 Jun
5-7 wk
24 May
23 Jul
0 wk
17 May
13 Jul
1 wk before
Broccoli
Brassica oleracea (Italica-gruppen)
12 – 26 Apr
30 Jun
4-6 wk
24 May
28 Jul
0 wk
17 May
18 Jul
1 wk before
Chili pepper
Capsicum annuum
Greenhouse
7 Mar – 4 Apr
2 Apr
8-12 wk
30 May
1 wk after
Curly Kale
Brassica oleracea (Curly Kale-gruppen)
5 – 19 Apr
13 Jun
5-7 wk
24 May
18 Jul
0 wk
12 May
8 Jul
2 wk before
Garden cucumber
Cucumis sativus
Fleece
9 – 16 May
27 May
3-4 wk
6 Jun
17 Jun
2 wk after
Florence Fennel
Foeniculum vulgare
Fleece
2 – 9 May
8 Jun
4-5 wk
6 Jun
6 Jul
2 wk after
14 Jun
26 Jun
3 wk after
Butter bean
Phaseolus lunatus
Season too short
4 – 11 Jun
3-4 wk
2 Jul
6 wk after
Onion
Allium cepa (Cepa-gruppen)
Fleece
1 – 29 Mar
20 Mar
8-12 wk
24 May
0 wk
23 May
0 wk
Onion (sets)
Allium cepa (Cepa-gruppen)
Fleece
6 May
4 Jun
3 wk before
6 May
25 May
3 wk before
Maize
Zea mays
Fleece
2 – 9 May
17 May
3-4 wk
30 May
7 Jun
1 wk after
Swiss Chard
Beta vulgaris (Flavescens-gruppen)
28 Apr – 5 May
5 Jul
3-4 wk
26 May
26 Jul
0 wk
3 Jun
16 Jul
1 wk after
Carrot
Daucus carota subsp. sativus var. sativus
24 May
8 Jul
0 wk
12 May
28 Jun
2 wk before
Palm Kale
Brassica oleracea (Palm Kale-gruppen)
5 – 19 Apr
13 Jun
5-7 wk
24 May
18 Jul
0 wk
12 May
8 Jul
2 wk before
Potato
Solanum tuberosum
Fleece
5 – 19 Apr
15 May
4-6 wk
17 May
12 Jun
1 wk before
17 May
2 Jun
1 wk before
Ornamental Kale
Brassica oleracea (Ornamental-gruppen)
5 – 19 Apr
23 Jun
5-7 wk
24 May
28 Jul
0 wk
17 May
18 Jul
1 wk before
Pumpkin
Cucurbita pepo
Fleece
9 – 16 May
14 Jun
3-4 wk
6 Jun
5 Jul
2 wk after
Beetroot
Beta vulgaris (Conditiva-gruppen)
28 Apr – 5 May
28 Apr
3-4 wk
26 May
0 wk
3 Jun
1 wk after
Red Cabbage
Brassica oleracea (Red Cabbage-gruppen)
12 – 26 Apr
25 Jun
4-6 wk
24 May
23 Jul
0 wk
Lettuce
Lactuca sativa
26 Apr – 3 May
12 Jul
3-4 wk
24 May
2 Aug
0 wk
17 May
23 Jul
1 wk before
Savoy Cabbage
Brassica oleracea (Savoy Cabbage-gruppen)
12 – 26 Apr
25 Jun
4-6 wk
24 May
23 Jul
0 wk
Shallot (bulbs)
Allium cepa (Aggregatum-gruppen)
14 – 28 Apr
19 May
2-4 wk
12 May
2 Jun
2 wk before
12 May
23 May
2 wk before
Shallot (sets)
Allium cepa (Aggregatum-gruppen)
Fleece
6 May
4 Jun
3 wk before
6 May
25 May
3 wk before
Spinach
Spinacia oleracea
26 Apr – 3 May
27 Jul
3-4 wk
24 May
17 Aug
0 wk
6 May
7 Aug
3 wk before
Sweet potato
Ipomoea batatas
20 Jun – 4 Jul
4-6 wk
1 Aug
10 wk after
Garden tomato
Solanum lycopersicum
Fleece
4 – 18 Apr
26 Apr
6-8 wk
30 May
7 Jun
1 wk after
Tomatillo
Physalis ixocarpa
Common Bean
Phaseolus vulgaris
9 – 23 May
3 Jun
2-4 wk
6 Jun
17 Jun
2 wk after
29 Jun
5 wk after
White Cabbage
Brassica oleracea (White Cabbage-gruppen)
12 – 26 Apr
25 Jun
4-6 wk
24 May
23 Jul
0 wk
Garden pea
Pisum sativum
26 Apr – 3 May
27 Jun
3-4 wk
24 May
18 Jul
0 wk
17 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
25 Apr – 9 May
23 May
4-6 wk
6 Jun
20 Jun
2 wk after
Lemon balm
Melissa officinalis
15 – 29 Mar
23 May
8-10 wk
24 May
18 Jul
0 wk
14 Jun
8 Jul
3 wk after
Dill
Anethum graveolens
17 May
26 Jul
1 wk before
Wild chives
Allium schoenoprasum
29 Mar – 12 Apr
6 Jun
6-8 wk
24 May
18 Jul
0 wk
17 May
8 Jul
1 wk before
Spearmint
Mentha spicata
1 – 29 Mar
23 May
8-12 wk
24 May
18 Jul
0 wk
14 Jun
8 Jul
3 wk after
Coriander
Coriandrum sativum
24 May
15 Aug
0 wk
3 Jun
5 Aug
1 wk after
Garden sage
Salvia officinalis
17 – 31 Mar
8 May
8-10 wk
26 May
3 Jul
0 wk
Common thyme
Thymus vulgaris
15 – 29 Mar
13 May
8-10 wk
24 May
8 Jul
0 wk
Oregano
Origanum vulgare
29 Mar – 12 Apr
27 May
6-8 wk
24 May
8 Jul
0 wk
14 Jun
28 Jun
3 wk after
Parsley
Petroselinum crispum
29 Mar – 12 Apr
27 May
6-8 wk
24 May
8 Jul
0 wk
17 May
28 Jun
1 wk before
Rosemary
Salvia rosmarinus
17 Feb – 17 Mar
30 Mar
10-14 wk
26 May
8 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
9 – 16 May
30 May
3-4 wk
6 Jun
20 Jun
2 wk after
Cornflower
Centaurea cyanus
24 May
18 Jul
0 wk
17 May
8 Jul
1 wk before
Statice
Limonium sinuatum
28 Mar – 11 Apr
22 Apr
8-10 wk
6 Jun
17 Jun
2 wk after
Sweet William
Dianthus barbatus
29 Mar – 12 Apr
6-8 wk
24 May
0 wk
29 May
1 wk after
Snow-on-the-mountain
Euphorbia marginata
11 – 25 Apr
6 May
6-8 wk
6 Jun
17 Jun
2 wk after
1 Aug
10 wk after
Pinnate dahlia
Dahlia × pinnata
9 – 23 Apr
14 May
6-8 wk
4 Jun
25 Jun
2 wk after
Pinnate dahlia (tubers)
Dahlia × pinnata
Fleece
8 Apr – 6 May
8 Jun
4-8 wk
3 Jun
6 Jul
1 wk after
3 Jun
26 Jun
1 wk after
Foxglove
Digitalis purpurea
15 – 29 Mar
8-10 wk
24 May
0 wk
3 Jun
1 wk after
Busy lizzie
Impatiens walleriana
2 – 30 Apr
10 Jun
8-12 wk
25 Jun
5 Aug
5 wk after
Creeping zinnia
Sanvitalia procumbens
11 – 25 Apr
16 May
6-8 wk
6 Jun
27 Jun
2 wk after
Hyacinth bean
Dolichos lablab
Season too short
25 Apr – 9 May
4-6 wk
6 Jun
2 wk after
Chinese lantern
Physalis alkekengi
17 – 31 Mar
21 Apr
8-10 wk
26 May
16 Jun
0 wk
Love in a mist
Nigella damascena
24 May
3 Jul
0 wk
17 May
23 Jun
1 wk before
Strawflower
Xerochrysum bracteatum
Fleece
4 – 18 Apr
10 May
6-8 wk
30 May
21 Jun
1 wk after
9 Jul
7 wk after
Purple-top vervain
Verbena bonariensis
3 – 31 Mar
21 Apr
8-12 wk
26 May
16 Jun
0 wk
Cardoon
Cynara cardunculus
Fleece
7 Mar – 4 Apr
24 Mar
8-12 wk
30 May
1 wk after
Regal-foxtail
Ptilotus nobilis
Greenhouse
7 Mar – 4 Apr
30 Apr
8-12 wk
30 May
25 Jun
1 wk after
Globe amaranth
Gomphrena globosa
Greenhouse
4 – 18 Apr
14 May
6-8 wk
30 May
25 Jun
1 wk after
Corn poppy
Papaver rhoeas
24 May
18 Jul
0 wk
17 May
8 Jul
1 wk before
Snapdragon
Antirrhinum majus
1 – 29 Mar
13 May
8-12 wk
24 May
8 Jul
0 wk
29 May
28 Jun
1 wk after
Flossflower
Ageratum houstonianum
Fleece
28 Mar – 11 Apr
16 May
8-10 wk
6 Jun
11 Jul
2 wk after
Sweet pea
Lathyrus odoratus
29 Mar – 19 Apr
3 Jun
5-8 wk
24 May
8 Jul
0 wk
Stock
Matthiola incana
29 Mar – 12 Apr
6 Jun
6-8 wk
24 May
18 Jul
0 wk
3 Jun
8 Jul
1 wk after
Wormwood
Artemisia absinthium
29 Mar – 12 Apr
7 May
6-8 wk
24 May
18 Jun
0 wk
3 Jun
8 Jun
1 wk after
Mexican sunflower
Tithonia rotundifolia
Greenhouse
18 Apr – 2 May
23 May
4-6 wk
30 May
20 Jun
1 wk after
Garden pansy
Viola × wittrockiana
15 – 29 Mar
23 May
8-10 wk
24 May
18 Jul
0 wk
29 May
8 Jul
1 wk after
Petunia
Petunia
14 Mar – 11 Apr
22 Apr
8-12 wk
6 Jun
17 Jun
2 wk after
Sweet Scabious
Scabiosa atropurpurea
31 Mar – 14 Apr
5 May
6-8 wk
26 May
16 Jun
0 wk
29 Jun
5 wk after
Common zinnia
Zinnia elegans
25 Apr – 9 May
23 May
4-6 wk
6 Jun
20 Jun
2 wk after
Common morning glory
Ipomoea purpurea
Fleece
2 – 16 May
30 May
3-5 wk
6 Jun
20 Jun
2 wk after
Garden cosmos
Cosmos bipinnatus
25 Apr – 9 May
28 May
4-6 wk
6 Jun
25 Jun
2 wk after
29 Jun
5 wk after
Scarlet milkweed
Asclepias curassavica
Greenhouse
14 Mar – 11 Apr
30 May
8-12 wk
6 Jun
25 Jul
2 wk after
Bee balm
Monarda didyma
1 – 29 Mar
23 Apr
8-12 wk
24 May
18 Jun
0 wk
14 Jun
3 wk after
Yarrow
Achillea millefolium
29 Mar – 12 Apr
7 Apr
6-8 wk
24 May
0 wk
3 Jun
1 wk after
Safflower
Carthamus tinctorius
24 May
18 Jun
0 wk
17 May
8 Jun
1 wk before
Iceland poppy
Papaver nudicaule
Season too short
29 Mar – 12 Apr
27 May
6-8 wk
24 May
8 Jul
0 wk
15 Apr
28 Jun
6 wk before
Bishop's flower
Ammi majus
12 – 26 Apr
10 Jun
4-6 wk
24 May
8 Jul
0 wk
3 Jun
28 Jun
1 wk after
Drumsticks
Pycnosorus globosus
Greenhouse
7 – 21 Mar
7 Apr
10-12 wk
30 May
16 Jun
1 wk after
Sunflower
Helianthus annuus
9 – 16 May
7 Jun
3-4 wk
6 Jun
28 Jun
2 wk after
14 Jun
18 Jun
3 wk after
China aster
Callistephus chinensis
11 – 25 Apr
27 May
6-8 wk
6 Jun
8 Jul
2 wk after
29 Jun
5 wk after
Annual phlox
Phlox drummondii
4 – 18 Apr
16 May
6-8 wk
30 May
27 Jun
1 wk after
29 Jun
5 wk after
Hollyhock
Alcea rosea
29 Mar – 12 Apr
6-8 wk
24 May
0 wk
3 Jun
1 wk after
Alpine delphinium
Delphinium elatum
1 – 29 Mar
23 Apr
8-12 wk
24 May
18 Jun
0 wk
14 Jun
3 wk after
African marigold
Tagetes erecta
11 – 25 Apr
16 May
6-8 wk
6 Jun
27 Jun
2 wk after
Black-eyed Susan
Rudbeckia hirta
31 Mar – 14 Apr
17 May
6-8 wk
26 May
28 Jun
0 wk
29 Jun
5 wk after
Wood sage
Salvia nemorosa
15 – 29 Mar
13 Apr
8-10 wk
24 May
8 Jun
0 wk
14 Jun
3 wk after
Black-eyed susan vine
Thunbergia alata
Fleece
28 Mar – 25 Apr
9 May
6-10 wk
6 Jun
20 Jun
2 wk after
California goldenpoppy
Eschscholzia californica
24 May
18 Jul
0 wk
17 May
8 Jul
1 wk before
Painted tongue
Salpiglossis sinuata
28 Mar – 11 Apr
24 Apr
8-10 wk
6 Jun
19 Jun
2 wk after
Water forget-me-not
Myosotis scorpioides
29 Mar – 12 Apr
7 May
6-8 wk
24 May
18 Jun
0 wk
3 Jun
8 Jun
1 wk after