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