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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 134 days 7 May – 18 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
27 Feb – 27 Mar
8-12 wk
22 May
2 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
24 Apr – 1 May
3-4 wk
22 May
2 wk after
Florence Fennel
Foeniculum vulgare
15 – 22 May
19 May
4-5 wk
19 Jun
6 wk after
25 Jun
7 wk after
Butter bean
Phaseolus lunatus
Season too short
27 May – 3 Jun
3-4 wk
24 Jun
7 wk after
Onion
Allium cepa (Cepa-gruppen)
12 Feb – 12 Mar
22 Mar
8-12 wk
7 May
17 May
0 wk
28 May
3 wk after
Onion (sets)
Allium cepa (Cepa-gruppen)
11 May
6 Jun
1 wk after
11 May
27 May
1 wk after
Maize
Zea mays
Season too short
10 – 17 Apr
3-4 wk
8 May
0 wk
Swiss Chard
Beta vulgaris (Flavescens-gruppen)
17 – 24 Apr
26 Jun
3-4 wk
15 May
17 Jul
1 wk after
28 May
7 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
21 May
4-6 wk
23 May
18 Jun
2 wk after
23 May
8 Jun
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
24 Apr – 1 May
3-4 wk
22 May
2 wk after
Beetroot
Beta vulgaris (Conditiva-gruppen)
17 – 24 Apr
27 May
3-4 wk
15 May
17 Jun
1 wk after
28 May
7 Jun
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
29 May
2-4 wk
7 May
12 Jun
0 wk
7 May
2 Jun
0 wk
Shallot (sets)
Allium cepa (Aggregatum-gruppen)
11 May
6 Jun
1 wk after
11 May
27 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
13 – 27 Mar
6-8 wk
8 May
0 wk
Tomatillo
Physalis ixocarpa
Common Bean
Phaseolus vulgaris
Greenhouse
10 – 24 Apr
19 Apr
2-4 wk
8 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
10 – 24 Apr
4-6 wk
22 May
2 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
17 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
6 Aug
0 wk
28 May
27 Jul
3 wk after
Garden sage
Salvia officinalis
6 – 20 Mar
4 May
8-10 wk
15 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
6 Feb – 6 Mar
23 Mar
10-14 wk
15 May
1 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
24 Apr – 1 May
3-4 wk
22 May
2 wk after
Cornflower
Centaurea cyanus
7 May
14 Jul
0 wk
11 May
4 Jul
1 wk after
Statice
Limonium sinuatum
Fleece
13 – 27 Mar
23 Mar
8-10 wk
22 May
2 wk after
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
Fleece
27 Mar – 10 Apr
6 Apr
6-8 wk
22 May
2 wk after
5 Jul
8 wk after
Pinnate dahlia
Dahlia × pinnata
Fleece
20 Mar – 3 Apr
12 Apr
6-8 wk
15 May
24 May
1 wk after
Pinnate dahlia (tubers)
Dahlia × pinnata
Fleece
2 – 30 Apr
26 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
11 Mar – 8 Apr
13 Apr
8-12 wk
3 Jun
8 Jun
4 wk after
Creeping zinnia
Sanvitalia procumbens
Fleece
27 Mar – 10 Apr
16 Apr
6-8 wk
22 May
28 May
2 wk after
Hyacinth bean
Dolichos lablab
Season too short
22 Apr – 6 May
4-6 wk
3 Jun
4 wk after
Chinese lantern
Physalis alkekengi
6 – 20 Mar
12 Apr
8-10 wk
15 May
7 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
13 – 27 Mar
7 Apr
6-8 wk
8 May
19 May
0 wk
17 Jun
6 wk after
Purple-top vervain
Verbena bonariensis
20 Feb – 20 Mar
12 Apr
8-12 wk
15 May
7 Jun
1 wk after
Cardoon
Cynara cardunculus
Fleece
27 Feb – 27 Mar
20 Mar
8-12 wk
22 May
2 wk after
Regal-foxtail
Ptilotus nobilis
Season too short
27 Feb – 27 Mar
8-12 wk
22 May
2 wk after
Globe amaranth
Gomphrena globosa
Season too short
27 Mar – 10 Apr
6-8 wk
22 May
2 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
13 – 27 Mar
13 Apr
8-10 wk
22 May
8 Jun
2 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
10 – 24 Apr
4-6 wk
22 May
2 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
Fleece
27 Feb – 27 Mar
23 Mar
8-12 wk
22 May
2 wk after
Sweet Scabious
Scabiosa atropurpurea
20 Mar – 3 Apr
26 Apr
6-8 wk
15 May
7 Jun
1 wk after
25 Jun
7 wk after
Common zinnia
Zinnia elegans
Greenhouse
27 Mar – 10 Apr
6 May
4-6 wk
8 May
3 Jun
0 wk
Common morning glory
Ipomoea purpurea
Season too short
17 Apr – 1 May
3-5 wk
22 May
2 wk after
Garden cosmos
Cosmos bipinnatus
Fleece
10 – 24 Apr
26 Apr
4-6 wk
22 May
24 May
2 wk after
11 Jun
5 wk after
Scarlet milkweed
Asclepias curassavica
Season too short
11 Mar – 8 Apr
18 Mar
8-12 wk
3 Jun
4 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
27 Feb – 13 Mar
10-12 wk
22 May
2 wk after
Sunflower
Helianthus annuus
6 – 13 May
31 May
3-4 wk
3 Jun
21 Jun
4 wk after
11 Jun
11 Jun
5 wk after
China aster
Callistephus chinensis
8 – 22 Apr
20 May
6-8 wk
3 Jun
1 Jul
4 wk after
25 Jun
7 wk after
Annual phlox
Phlox drummondii
Fleece
13 – 27 Mar
16 Apr
6-8 wk
8 May
28 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
Fleece
27 Mar – 10 Apr
16 Apr
6-8 wk
22 May
28 May
2 wk after
Black-eyed Susan
Rudbeckia hirta
20 Mar – 3 Apr
10 May
6-8 wk
15 May
21 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
13 Mar – 10 Apr
6-10 wk
22 May
2 wk after
California goldenpoppy
Eschscholzia californica
7 May
12 Jul
0 wk
11 May
2 Jul
1 wk after
Painted tongue
Salpiglossis sinuata
25 Mar – 8 Apr
21 Apr
8-10 wk
3 Jun
16 Jun
4 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