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Method
Rel. frost
Last spring frost (0°C) 5 May Frost 9 of 10 years · 20 years of data
Frost-free season 137 days 5 May – 19 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)
17 – 31 Mar
21 Jun
5-7 wk
5 May
26 Jul
0 wk
29 Apr
16 Jul
1 wk before
Broccoli
Brassica oleracea (Italica-gruppen)
24 Mar – 7 Apr
3 Jul
4-6 wk
5 May
31 Jul
0 wk
29 Apr
21 Jul
1 wk before
Chili pepper
Capsicum annuum
Season too short
20 Feb – 20 Mar
8-12 wk
15 May
1 wk after
Curly Kale
Brassica oleracea (Curly Kale-gruppen)
17 – 31 Mar
16 Jun
5-7 wk
5 May
21 Jul
0 wk
22 Apr
11 Jul
2 wk before
Garden cucumber
Cucumis sativus
Season too short
17 – 24 Apr
3-4 wk
15 May
1 wk after
Florence Fennel
Foeniculum vulgare
6 – 13 May
21 May
4-5 wk
10 Jun
18 Jun
5 wk after
15 Jun
6 wk after
Butter bean
Phaseolus lunatus
Season too short
18 – 25 May
3-4 wk
15 Jun
6 wk after
Onion
Allium cepa (Cepa-gruppen)
10 Feb – 10 Mar
4 Apr
8-12 wk
5 May
30 May
0 wk
18 May
20 May
2 wk after
Onion (sets)
Allium cepa (Cepa-gruppen)
29 Apr
19 Jun
1 wk before
29 Apr
9 Jun
1 wk before
Maize
Zea mays
Season too short
9 – 16 Apr
3-4 wk
7 May
0 wk
Swiss Chard
Beta vulgaris (Flavescens-gruppen)
12 – 19 Apr
26 Jun
3-4 wk
10 May
17 Jul
1 wk after
18 May
7 Jul
2 wk after
Carrot
Daucus carota subsp. sativus var. sativus
5 May
11 Jul
0 wk
22 Apr
1 Jul
2 wk before
Palm Kale
Brassica oleracea (Palm Kale-gruppen)
17 – 31 Mar
16 Jun
5-7 wk
5 May
21 Jul
0 wk
22 Apr
11 Jul
2 wk before
Potato
Solanum tuberosum
29 Mar – 12 Apr
7 Jun
4-6 wk
10 May
5 Jul
1 wk after
10 May
25 Jun
1 wk after
Ornamental Kale
Brassica oleracea (Ornamental-gruppen)
17 – 31 Mar
26 Jun
5-7 wk
5 May
31 Jul
0 wk
29 Apr
21 Jul
1 wk before
Pumpkin
Cucurbita pepo
Greenhouse
17 – 24 Apr
19 May
3-4 wk
15 May
9 Jun
1 wk after
Beetroot
Beta vulgaris (Conditiva-gruppen)
12 – 19 Apr
17 Jun
3-4 wk
10 May
8 Jul
1 wk after
18 May
28 Jun
2 wk after
Red Cabbage
Brassica oleracea (Red Cabbage-gruppen)
24 Mar – 7 Apr
28 Jun
4-6 wk
5 May
26 Jul
0 wk
Lettuce
Lactuca sativa
7 – 14 Apr
15 Jul
3-4 wk
5 May
5 Aug
0 wk
29 Apr
26 Jul
1 wk before
Savoy Cabbage
Brassica oleracea (Savoy Cabbage-gruppen)
24 Mar – 7 Apr
28 Jun
4-6 wk
5 May
26 Jul
0 wk
Shallot (bulbs)
Allium cepa (Aggregatum-gruppen)
25 Mar – 8 Apr
7 Jun
2-4 wk
22 Apr
21 Jun
2 wk before
22 Apr
11 Jun
2 wk before
Shallot (sets)
Allium cepa (Aggregatum-gruppen)
29 Apr
19 Jun
1 wk before
29 Apr
9 Jun
1 wk before
Spinach
Spinacia oleracea
7 – 14 Apr
30 Jul
3-4 wk
5 May
20 Aug
0 wk
15 Apr
10 Aug
3 wk before
Sweet potato
Ipomoea batatas
6 – 20 Jun
4-6 wk
18 Jul
11 wk after
Garden tomato
Solanum lycopersicum
Season too short
12 – 26 Mar
6-8 wk
7 May
0 wk
Tomatillo
Physalis ixocarpa
Common Bean
Phaseolus vulgaris
Greenhouse
9 – 23 Apr
21 May
2-4 wk
7 May
4 Jun
0 wk
18 May
25 May
2 wk after
White Cabbage
Brassica oleracea (White Cabbage-gruppen)
24 Mar – 7 Apr
28 Jun
4-6 wk
5 May
26 Jul
0 wk
Garden pea
Pisum sativum
7 – 14 Apr
30 Jun
3-4 wk
5 May
21 Jul
0 wk
29 Apr
11 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
Greenhouse
3 – 17 Apr
27 Apr
4-6 wk
15 May
25 May
1 wk after
Lemon balm
Melissa officinalis
24 Feb – 10 Mar
26 May
8-10 wk
5 May
21 Jul
0 wk
31 May
11 Jul
4 wk after
Dill
Anethum graveolens
29 Apr
17 Jul
1 wk before
Wild chives
Allium schoenoprasum
10 – 24 Mar
9 Jun
6-8 wk
5 May
21 Jul
0 wk
29 Apr
11 Jul
1 wk before
Spearmint
Mentha spicata
10 Feb – 10 Mar
26 May
8-12 wk
5 May
21 Jul
0 wk
31 May
11 Jul
4 wk after
Coriander
Coriandrum sativum
5 May
6 Aug
0 wk
18 May
27 Jul
2 wk after
Garden sage
Salvia officinalis
1 – 15 Mar
11 May
8-10 wk
10 May
6 Jul
1 wk after
Common thyme
Thymus vulgaris
24 Feb – 10 Mar
16 May
8-10 wk
5 May
11 Jul
0 wk
Oregano
Origanum vulgare
10 – 24 Mar
30 May
6-8 wk
5 May
11 Jul
0 wk
31 May
1 Jul
4 wk after
Parsley
Petroselinum crispum
10 – 24 Mar
30 May
6-8 wk
5 May
11 Jul
0 wk
29 Apr
1 Jul
1 wk before
Rosemary
Salvia rosmarinus
1 Feb – 1 Mar
25 Mar
10-14 wk
10 May
3 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
Greenhouse
17 – 24 Apr
4 May
3-4 wk
15 May
25 May
1 wk after
Cornflower
Centaurea cyanus
5 May
21 Jul
0 wk
29 Apr
11 Jul
1 wk before
Statice
Limonium sinuatum
Fleece
6 – 20 Mar
26 Mar
8-10 wk
15 May
21 May
1 wk after
Sweet William
Dianthus barbatus
10 – 24 Mar
6-8 wk
5 May
0 wk
10 May
1 wk after
Snow-on-the-mountain
Euphorbia marginata
Fleece
20 Mar – 3 Apr
9 Apr
6-8 wk
15 May
21 May
1 wk after
20 Jun
7 wk after
Pinnate dahlia
Dahlia × pinnata
23 Mar – 6 Apr
3 Apr
6-8 wk
18 May
2 wk after
Pinnate dahlia (tubers)
Dahlia × pinnata
5 Apr – 3 May
17 Apr
4-8 wk
31 May
4 wk after
31 May
4 wk after
Foxglove
Digitalis purpurea
24 Feb – 10 Mar
8-10 wk
5 May
0 wk
18 May
2 wk after
Busy lizzie
Impatiens walleriana
Fleece
2 – 30 Mar
15 May
8-12 wk
25 May
10 Jul
3 wk after
Creeping zinnia
Sanvitalia procumbens
Fleece
20 Mar – 3 Apr
19 Apr
6-8 wk
15 May
31 May
1 wk after
Hyacinth bean
Dolichos lablab
Season too short
13 – 27 Apr
4-6 wk
25 May
3 wk after
Chinese lantern
Physalis alkekengi
1 – 15 Mar
12 Apr
8-10 wk
10 May
7 Jun
1 wk after
Love in a mist
Nigella damascena
5 May
6 Jul
0 wk
29 Apr
26 Jun
1 wk before
Strawflower
Xerochrysum bracteatum
Fleece
20 Mar – 3 Apr
30 Mar
6-8 wk
15 May
1 wk after
20 Jun
7 wk after
Purple-top vervain
Verbena bonariensis
15 Feb – 15 Mar
12 Apr
8-12 wk
10 May
7 Jun
1 wk after
Cardoon
Cynara cardunculus
Fleece
20 Feb – 20 Mar
27 Mar
8-12 wk
15 May
22 May
1 wk after
Regal-foxtail
Ptilotus nobilis
Greenhouse
20 Feb – 20 Mar
20 Mar
8-12 wk
15 May
15 May
1 wk after
Globe amaranth
Gomphrena globosa
Greenhouse
20 Mar – 3 Apr
3 Apr
6-8 wk
15 May
15 May
1 wk after
Corn poppy
Papaver rhoeas
5 May
21 Jul
0 wk
29 Apr
11 Jul
1 wk before
Snapdragon
Antirrhinum majus
10 Feb – 10 Mar
16 May
8-12 wk
5 May
11 Jul
0 wk
10 May
1 Jul
1 wk after
Flossflower
Ageratum houstonianum
Fleece
16 – 30 Mar
5 Apr
8-10 wk
25 May
31 May
3 wk after
Sweet pea
Lathyrus odoratus
10 – 31 Mar
6 Jun
5-8 wk
5 May
11 Jul
0 wk
Stock
Matthiola incana
10 – 24 Mar
9 Jun
6-8 wk
5 May
21 Jul
0 wk
18 May
11 Jul
2 wk after
Wormwood
Artemisia absinthium
10 – 24 Mar
10 May
6-8 wk
5 May
21 Jun
0 wk
18 May
11 Jun
2 wk after
Mexican sunflower
Tithonia rotundifolia
Greenhouse
3 – 17 Apr
12 Apr
4-6 wk
15 May
1 wk after
Garden pansy
Viola × wittrockiana
24 Feb – 10 Mar
26 May
8-10 wk
5 May
21 Jul
0 wk
10 May
11 Jul
1 wk after
Petunia
Petunia
Fleece
20 Feb – 20 Mar
26 Mar
8-12 wk
15 May
21 May
1 wk after
Sweet Scabious
Scabiosa atropurpurea
15 – 29 Mar
26 Apr
6-8 wk
10 May
7 Jun
1 wk after
15 Jun
6 wk after
Common zinnia
Zinnia elegans
Fleece
3 – 17 Apr
27 Apr
4-6 wk
15 May
25 May
1 wk after
Common morning glory
Ipomoea purpurea
Greenhouse
10 – 24 Apr
4 May
3-5 wk
15 May
25 May
1 wk after
Garden cosmos
Cosmos bipinnatus
Fleece
3 – 17 Apr
26 Apr
4-6 wk
15 May
24 May
1 wk after
31 May
4 wk after
Scarlet milkweed
Asclepias curassavica
Greenhouse
2 – 30 Mar
19 Apr
8-12 wk
25 May
14 Jun
3 wk after
Bee balm
Monarda didyma
10 Feb – 10 Mar
26 Apr
8-12 wk
5 May
21 Jun
0 wk
31 May
11 Jun
4 wk after
Yarrow
Achillea millefolium
10 – 24 Mar
10 Apr
6-8 wk
5 May
22 May
0 wk
18 May
2 wk after
Safflower
Carthamus tinctorius
5 May
21 Jun
0 wk
29 Apr
11 Jun
1 wk before
Iceland poppy
Papaver nudicaule
Season too short
10 – 24 Mar
30 May
6-8 wk
5 May
11 Jul
0 wk
20 Mar
1 Jul
7 wk before
Bishop's flower
Ammi majus
24 Mar – 7 Apr
13 Jun
4-6 wk
5 May
11 Jul
0 wk
18 May
1 Jul
2 wk after
Drumsticks
Pycnosorus globosus
Season too short
20 Feb – 6 Mar
23 Feb
10-12 wk
15 May
1 wk after
Sunflower
Helianthus annuus
27 Apr – 4 May
2 Jun
3-4 wk
25 May
23 Jun
3 wk after
31 May
13 Jun
4 wk after
China aster
Callistephus chinensis
30 Mar – 13 Apr
22 May
6-8 wk
25 May
3 Jul
3 wk after
15 Jun
23 Jun
6 wk after
Annual phlox
Phlox drummondii
Fleece
12 – 26 Mar
19 Apr
6-8 wk
7 May
31 May
0 wk
31 May
4 wk after
Hollyhock
Alcea rosea
10 – 24 Mar
6-8 wk
5 May
0 wk
18 May
2 wk after
Alpine delphinium
Delphinium elatum
10 Feb – 10 Mar
26 Apr
8-12 wk
5 May
21 Jun
0 wk
31 May
11 Jun
4 wk after
African marigold
Tagetes erecta
Fleece
20 Mar – 3 Apr
19 Apr
6-8 wk
15 May
31 May
1 wk after
Black-eyed Susan
Rudbeckia hirta
15 – 29 Mar
12 May
6-8 wk
10 May
23 Jun
1 wk after
15 Jun
6 wk after
Wood sage
Salvia nemorosa
24 Feb – 10 Mar
16 Apr
8-10 wk
5 May
11 Jun
0 wk
31 May
1 Jun
4 wk after
Black-eyed susan vine
Thunbergia alata
Greenhouse
6 Mar – 3 Apr
13 Apr
6-10 wk
15 May
25 May
1 wk after
California goldenpoppy
Eschscholzia californica
5 May
21 Jul
0 wk
29 Apr
11 Jul
1 wk before
Painted tongue
Salpiglossis sinuata
16 – 30 Mar
23 Apr
8-10 wk
25 May
18 Jun
3 wk after
Water forget-me-not
Myosotis scorpioides
10 – 24 Mar
10 May
6-8 wk
5 May
21 Jun
0 wk
18 May
11 Jun
2 wk after