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Rel. frost
Last spring frost (0°C) 7 May Frost 9 of 10 years · 20 years of data
Frost-free season 128 days 7 May – 12 Sep
Probability that frost is over

10% = 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)
19 Mar – 2 Apr
14 Jun
5-7 wk
7 May
19 Jul
0 wk
11 May
9 Jul
1 wk after
Broccoli
Brassica oleracea (Italica-gruppen)
26 Mar – 9 Apr
26 Jun
4-6 wk
7 May
24 Jul
0 wk
11 May
14 Jul
1 wk after
Chili pepper
Capsicum annuum
Season too short
22 Feb – 22 Mar
8-12 wk
17 May
1 wk after
Curly Kale
Brassica oleracea (Curly Kale-gruppen)
19 Mar – 2 Apr
9 Jun
5-7 wk
7 May
14 Jul
0 wk
7 May
4 Jul
0 wk
Garden cucumber
Cucumis sativus
Season too short
19 – 26 Apr
3-4 wk
17 May
1 wk after
Florence Fennel
Foeniculum vulgare
8 – 15 May
15 May
4-5 wk
12 Jun
12 Jun
5 wk after
25 Jun
7 wk after
Butter bean
Phaseolus lunatus
Season too short
20 – 27 May
3-4 wk
17 Jun
6 wk after
Onion
Allium cepa (Cepa-gruppen)
12 Feb – 12 Mar
13 Mar
8-12 wk
7 May
8 May
0 wk
28 May
3 wk after
Onion (sets)
Allium cepa (Cepa-gruppen)
11 May
28 May
1 wk after
11 May
18 May
1 wk after
Maize
Zea mays
Season too short
11 – 18 Apr
3-4 wk
9 May
0 wk
Swiss Chard
Beta vulgaris (Flavescens-gruppen)
14 – 21 Apr
25 Jun
3-4 wk
12 May
16 Jul
1 wk after
28 May
6 Jul
3 wk after
Carrot
Daucus carota subsp. sativus var. sativus
7 May
4 Jul
0 wk
7 May
24 Jun
0 wk
Palm Kale
Brassica oleracea (Palm Kale-gruppen)
19 Mar – 2 Apr
9 Jun
5-7 wk
7 May
14 Jul
0 wk
7 May
4 Jul
0 wk
Potato
Solanum tuberosum
11 – 25 Apr
11 May
4-6 wk
23 May
8 Jun
2 wk after
23 May
29 May
2 wk after
Ornamental Kale
Brassica oleracea (Ornamental-gruppen)
19 Mar – 2 Apr
19 Jun
5-7 wk
7 May
24 Jul
0 wk
11 May
14 Jul
1 wk after
Pumpkin
Cucurbita pepo
Season too short
19 – 26 Apr
24 Apr
3-4 wk
17 May
1 wk after
Beetroot
Beta vulgaris (Conditiva-gruppen)
14 – 21 Apr
15 May
3-4 wk
12 May
5 Jun
1 wk after
28 May
3 wk after
Red Cabbage
Brassica oleracea (Red Cabbage-gruppen)
26 Mar – 9 Apr
21 Jun
4-6 wk
7 May
19 Jul
0 wk
Lettuce
Lactuca sativa
9 – 16 Apr
8 Jul
3-4 wk
7 May
29 Jul
0 wk
11 May
19 Jul
1 wk after
Savoy Cabbage
Brassica oleracea (Savoy Cabbage-gruppen)
26 Mar – 9 Apr
21 Jun
4-6 wk
7 May
19 Jul
0 wk
Shallot (bulbs)
Allium cepa (Aggregatum-gruppen)
9 – 23 Apr
17 May
2-4 wk
7 May
31 May
0 wk
7 May
21 May
0 wk
Shallot (sets)
Allium cepa (Aggregatum-gruppen)
11 May
28 May
1 wk after
11 May
18 May
1 wk after
Spinach
Spinacia oleracea
9 – 16 Apr
23 Jul
3-4 wk
7 May
13 Aug
0 wk
3 May
3 Aug
1 wk before
Sweet potato
Ipomoea batatas
8 – 22 Jun
4-6 wk
20 Jul
11 wk after
Garden tomato
Solanum lycopersicum
Season too short
14 – 28 Mar
6-8 wk
9 May
0 wk
Tomatillo
Physalis ixocarpa
Common Bean
Phaseolus vulgaris
Greenhouse
11 – 25 Apr
26 Apr
2-4 wk
9 May
10 May
0 wk
28 May
3 wk after
White Cabbage
Brassica oleracea (White Cabbage-gruppen)
26 Mar – 9 Apr
21 Jun
4-6 wk
7 May
19 Jul
0 wk
Garden pea
Pisum sativum
9 – 16 Apr
23 Jun
3-4 wk
7 May
14 Jul
0 wk
11 May
4 Jul
1 wk after

Herbs

Plant Sow indoors Transplant Direct sow
Earliest Latest Growing time Earliest Latest Rel. frost Earliest Latest Rel. frost
Basil
Ocimum basilicum
Season too short
5 – 19 Apr
4-6 wk
17 May
1 wk after
Lemon balm
Melissa officinalis
26 Feb – 12 Mar
19 May
8-10 wk
7 May
14 Jul
0 wk
11 Jun
4 Jul
5 wk after
Dill
Anethum graveolens
11 May
16 Jul
1 wk after
Wild chives
Allium schoenoprasum
12 – 26 Mar
2 Jun
6-8 wk
7 May
14 Jul
0 wk
11 May
4 Jul
1 wk after
Spearmint
Mentha spicata
12 Feb – 12 Mar
19 May
8-12 wk
7 May
14 Jul
0 wk
11 Jun
4 Jul
5 wk after
Coriander
Coriandrum sativum
7 May
5 Aug
0 wk
28 May
26 Jul
3 wk after
Garden sage
Salvia officinalis
3 – 17 Mar
4 May
8-10 wk
12 May
29 Jun
1 wk after
Common thyme
Thymus vulgaris
26 Feb – 12 Mar
9 May
8-10 wk
7 May
4 Jul
0 wk
Oregano
Origanum vulgare
12 – 26 Mar
23 May
6-8 wk
7 May
4 Jul
0 wk
11 Jun
24 Jun
5 wk after
Parsley
Petroselinum crispum
12 – 26 Mar
23 May
6-8 wk
7 May
4 Jul
0 wk
11 May
24 Jun
1 wk after
Rosemary
Salvia rosmarinus
3 Feb – 3 Mar
27 Mar
10-14 wk
12 May
5 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
Season too short
19 – 26 Apr
3-4 wk
17 May
1 wk after
Cornflower
Centaurea cyanus
7 May
14 Jul
0 wk
11 May
4 Jul
1 wk after
Statice
Limonium sinuatum
Greenhouse
28 Feb – 14 Mar
31 Mar
8-10 wk
9 May
26 May
0 wk
Sweet William
Dianthus barbatus
12 – 26 Mar
6-8 wk
7 May
0 wk
23 May
2 wk after
Snow-on-the-mountain
Euphorbia marginata
Greenhouse
14 – 28 Mar
14 Apr
6-8 wk
9 May
26 May
0 wk
17 Jun
6 wk after
Pinnate dahlia
Dahlia × pinnata
Fleece
17 – 31 Mar
6 Apr
6-8 wk
12 May
18 May
1 wk after
Pinnate dahlia (tubers)
Dahlia × pinnata
Fleece
2 – 30 Apr
20 Apr
4-8 wk
28 May
3 wk after
28 May
3 wk after
Foxglove
Digitalis purpurea
26 Feb – 12 Mar
8-10 wk
7 May
0 wk
28 May
3 wk after
Busy lizzie
Impatiens walleriana
Fleece
4 Mar – 1 Apr
20 Apr
8-12 wk
27 May
15 Jun
3 wk after
Creeping zinnia
Sanvitalia procumbens
Greenhouse
14 – 28 Mar
24 Apr
6-8 wk
9 May
5 Jun
0 wk
Hyacinth bean
Dolichos lablab
Season too short
15 – 29 Apr
4-6 wk
27 May
3 wk after
Chinese lantern
Physalis alkekengi
3 – 17 Mar
11 Apr
8-10 wk
12 May
6 Jun
1 wk after
Love in a mist
Nigella damascena
7 May
29 Jun
0 wk
11 May
19 Jun
1 wk after
Strawflower
Xerochrysum bracteatum
Greenhouse
14 – 28 Mar
4 Apr
6-8 wk
9 May
16 May
0 wk
17 Jun
6 wk after
Purple-top vervain
Verbena bonariensis
17 Feb – 17 Mar
11 Apr
8-12 wk
12 May
6 Jun
1 wk after
Cardoon
Cynara cardunculus
Fleece
22 Feb – 22 Mar
20 Mar
8-12 wk
17 May
1 wk after
Regal-foxtail
Ptilotus nobilis
Season too short
22 Feb – 22 Mar
23 Feb
8-12 wk
17 May
1 wk after
Globe amaranth
Gomphrena globosa
Season too short
22 Mar – 5 Apr
6-8 wk
17 May
1 wk after
Corn poppy
Papaver rhoeas
7 May
14 Jul
0 wk
11 May
4 Jul
1 wk after
Snapdragon
Antirrhinum majus
12 Feb – 12 Mar
9 May
8-12 wk
7 May
4 Jul
0 wk
23 May
24 Jun
2 wk after
Flossflower
Ageratum houstonianum
Greenhouse
8 – 22 Mar
10 Apr
8-10 wk
17 May
5 Jun
1 wk after
Sweet pea
Lathyrus odoratus
12 Mar – 2 Apr
30 May
5-8 wk
7 May
4 Jul
0 wk
Stock
Matthiola incana
12 – 26 Mar
2 Jun
6-8 wk
7 May
14 Jul
0 wk
28 May
4 Jul
3 wk after
Wormwood
Artemisia absinthium
12 – 26 Mar
3 May
6-8 wk
7 May
14 Jun
0 wk
28 May
4 Jun
3 wk after
Mexican sunflower
Tithonia rotundifolia
Season too short
5 – 19 Apr
4-6 wk
17 May
1 wk after
Garden pansy
Viola × wittrockiana
26 Feb – 12 Mar
19 May
8-10 wk
7 May
14 Jul
0 wk
23 May
4 Jul
2 wk after
Petunia
Petunia
Greenhouse
14 Feb – 14 Mar
31 Mar
8-12 wk
9 May
26 May
0 wk
Sweet Scabious
Scabiosa atropurpurea
17 – 31 Mar
25 Apr
6-8 wk
12 May
6 Jun
1 wk after
25 Jun
7 wk after
Common zinnia
Zinnia elegans
Greenhouse
28 Mar – 11 Apr
30 Apr
4-6 wk
9 May
28 May
0 wk
Common morning glory
Ipomoea purpurea
Season too short
12 – 26 Apr
3-5 wk
17 May
1 wk after
Garden cosmos
Cosmos bipinnatus
Fleece
5 – 19 Apr
20 Apr
4-6 wk
17 May
18 May
1 wk after
11 Jun
5 wk after
Scarlet milkweed
Asclepias curassavica
Greenhouse
4 Mar – 1 Apr
25 Mar
8-12 wk
27 May
3 wk after
Bee balm
Monarda didyma
12 Feb – 12 Mar
19 Apr
8-12 wk
7 May
14 Jun
0 wk
11 Jun
5 wk after
Yarrow
Achillea millefolium
12 – 26 Mar
3 Apr
6-8 wk
7 May
15 May
0 wk
28 May
3 wk after
Safflower
Carthamus tinctorius
7 May
14 Jun
0 wk
11 May
4 Jun
1 wk after
Iceland poppy
Papaver nudicaule
Season too short
12 – 26 Mar
23 May
6-8 wk
7 May
4 Jul
0 wk
19 Apr
24 Jun
3 wk before
Bishop's flower
Ammi majus
26 Mar – 9 Apr
6 Jun
4-6 wk
7 May
4 Jul
0 wk
28 May
24 Jun
3 wk after
Drumsticks
Pycnosorus globosus
Season too short
22 Feb – 8 Mar
10-12 wk
17 May
1 wk after
Sunflower
Helianthus annuus
29 Apr – 6 May
4 Jun
3-4 wk
27 May
25 Jun
3 wk after
11 Jun
15 Jun
5 wk after
China aster
Callistephus chinensis
1 – 15 Apr
24 May
6-8 wk
27 May
5 Jul
3 wk after
25 Jun
25 Jun
7 wk after
Annual phlox
Phlox drummondii
Fleece
14 – 28 Mar
4 Apr
6-8 wk
9 May
16 May
0 wk
11 Jun
5 wk after
Hollyhock
Alcea rosea
12 – 26 Mar
6-8 wk
7 May
0 wk
28 May
3 wk after
Alpine delphinium
Delphinium elatum
12 Feb – 12 Mar
19 Apr
8-12 wk
7 May
14 Jun
0 wk
11 Jun
5 wk after
African marigold
Tagetes erecta
Greenhouse
14 – 28 Mar
24 Apr
6-8 wk
9 May
5 Jun
0 wk
Black-eyed Susan
Rudbeckia hirta
17 – 31 Mar
14 May
6-8 wk
12 May
25 Jun
1 wk after
25 Jun
7 wk after
Wood sage
Salvia nemorosa
26 Feb – 12 Mar
9 Apr
8-10 wk
7 May
4 Jun
0 wk
11 Jun
5 wk after
Black-eyed susan vine
Thunbergia alata
Season too short
8 Mar – 5 Apr
19 Mar
6-10 wk
17 May
1 wk after
California goldenpoppy
Eschscholzia californica
7 May
14 Jul
0 wk
11 May
4 Jul
1 wk after
Painted tongue
Salpiglossis sinuata
18 Mar – 1 Apr
17 Apr
8-10 wk
27 May
12 Jun
3 wk after
Water forget-me-not
Myosotis scorpioides
12 – 26 Mar
3 May
6-8 wk
7 May
14 Jun
0 wk
28 May
4 Jun
3 wk after