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