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Method
Rel. frost
Last spring frost (0°C) 8 May Frost 9 of 10 years · 20 years of data
Frost-free season 115 days 8 May – 31 Aug
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)
20 Mar – 3 Apr
10 Jun
5-7 wk
8 May
15 Jul
0 wk
9 May
5 Jul
0 wk
Broccoli
Brassica oleracea (Italica-gruppen)
27 Mar – 10 Apr
22 Jun
4-6 wk
8 May
20 Jul
0 wk
9 May
10 Jul
0 wk
Chili pepper
Capsicum annuum
Season too short
23 Feb – 23 Mar
8-12 wk
18 May
1 wk after
Curly Kale
Brassica oleracea (Curly Kale-gruppen)
20 Mar – 3 Apr
5 Jun
5-7 wk
8 May
10 Jul
0 wk
8 May
30 Jun
0 wk
Garden cucumber
Cucumis sativus
Season too short
20 – 27 Apr
3-4 wk
18 May
1 wk after
Florence Fennel
Foeniculum vulgare
Fleece
23 – 30 Apr
19 May
4-5 wk
28 May
16 Jun
3 wk after
2 Jun
6 Jun
4 wk after
Butter bean
Phaseolus lunatus
Season too short
21 – 28 May
3-4 wk
18 Jun
6 wk after
Onion
Allium cepa (Cepa-gruppen)
Fleece
13 Feb – 13 Mar
1 Mar
8-12 wk
8 May
0 wk
14 May
1 wk after
Onion (sets)
Allium cepa (Cepa-gruppen)
Greenhouse
29 Apr
25 May
1 wk before
29 Apr
15 May
1 wk before
Maize
Zea mays
Season too short
12 – 19 Apr
3-4 wk
10 May
0 wk
Swiss Chard
Beta vulgaris (Flavescens-gruppen)
15 – 22 Apr
15 Jun
3-4 wk
13 May
6 Jul
1 wk after
21 May
26 Jun
2 wk after
Carrot
Daucus carota subsp. sativus var. sativus
8 May
27 Jun
0 wk
8 May
17 Jun
0 wk
Palm Kale
Brassica oleracea (Palm Kale-gruppen)
20 Mar – 3 Apr
5 Jun
5-7 wk
8 May
10 Jul
0 wk
8 May
30 Jun
0 wk
Potato
Solanum tuberosum
Greenhouse
24 Mar – 7 Apr
8 May
4-6 wk
5 May
5 Jun
0 wk
5 May
26 May
0 wk
Ornamental Kale
Brassica oleracea (Ornamental-gruppen)
20 Mar – 3 Apr
12 Jun
5-7 wk
8 May
17 Jul
0 wk
9 May
7 Jul
0 wk
Pumpkin
Cucurbita pepo
Season too short
20 – 27 Apr
3-4 wk
18 May
1 wk after
Beetroot
Beta vulgaris (Conditiva-gruppen)
Fleece
10 – 17 Apr
4 May
3-4 wk
8 May
25 May
0 wk
14 May
15 May
1 wk after
Red Cabbage
Brassica oleracea (Red Cabbage-gruppen)
27 Mar – 10 Apr
17 Jun
4-6 wk
8 May
15 Jul
0 wk
Lettuce
Lactuca sativa
10 – 17 Apr
1 Jul
3-4 wk
8 May
22 Jul
0 wk
9 May
12 Jul
0 wk
Savoy Cabbage
Brassica oleracea (Savoy Cabbage-gruppen)
27 Mar – 10 Apr
17 Jun
4-6 wk
8 May
15 Jul
0 wk
Shallot (bulbs)
Allium cepa (Aggregatum-gruppen)
Fleece
4 – 18 Apr
11 May
2-4 wk
2 May
25 May
1 wk before
2 May
15 May
1 wk before
Shallot (sets)
Allium cepa (Aggregatum-gruppen)
Greenhouse
29 Apr
25 May
1 wk before
29 Apr
15 May
1 wk before
Spinach
Spinacia oleracea
10 – 17 Apr
19 Jul
3-4 wk
8 May
9 Aug
0 wk
5 May
30 Jul
0 wk
Sweet potato
Ipomoea batatas
2 – 16 Jun
4-6 wk
14 Jul
10 wk after
Garden tomato
Solanum lycopersicum
Season too short
15 – 29 Mar
6-8 wk
10 May
0 wk
Tomatillo
Physalis ixocarpa
Common Bean
Phaseolus vulgaris
Season too short
12 – 26 Apr
2-4 wk
10 May
0 wk
21 May
2 wk after
White Cabbage
Brassica oleracea (White Cabbage-gruppen)
27 Mar – 10 Apr
17 Jun
4-6 wk
8 May
15 Jul
0 wk
Garden pea
Pisum sativum
10 – 17 Apr
16 Jun
3-4 wk
8 May
7 Jul
0 wk
9 May
27 Jun
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
4-6 wk
18 May
1 wk after
Lemon balm
Melissa officinalis
27 Feb – 13 Mar
12 May
8-10 wk
8 May
7 Jul
0 wk
2 Jun
27 Jun
4 wk after
Dill
Anethum graveolens
9 May
6 Jul
0 wk
Wild chives
Allium schoenoprasum
13 – 27 Mar
29 May
6-8 wk
8 May
10 Jul
0 wk
9 May
30 Jun
0 wk
Spearmint
Mentha spicata
13 Feb – 13 Mar
15 May
8-12 wk
8 May
10 Jul
0 wk
2 Jun
30 Jun
4 wk after
Coriander
Coriandrum sativum
8 May
26 Jul
0 wk
21 May
16 Jul
2 wk after
Garden sage
Salvia officinalis
4 – 18 Mar
30 Apr
8-10 wk
13 May
25 Jun
1 wk after
Common thyme
Thymus vulgaris
27 Feb – 13 Mar
5 May
8-10 wk
8 May
30 Jun
0 wk
Oregano
Origanum vulgare
13 – 27 Mar
19 May
6-8 wk
8 May
30 Jun
0 wk
2 Jun
20 Jun
4 wk after
Parsley
Petroselinum crispum
13 – 27 Mar
19 May
6-8 wk
8 May
30 Jun
0 wk
9 May
20 Jun
0 wk
Rosemary
Salvia rosmarinus
Fleece
30 Jan – 27 Feb
22 Mar
10-14 wk
8 May
31 May
0 wk

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
3-4 wk
18 May
1 wk after
Cornflower
Centaurea cyanus
8 May
10 Jul
0 wk
9 May
30 Jun
0 wk
Statice
Limonium sinuatum
Season too short
1 – 15 Mar
19 Mar
8-10 wk
10 May
14 May
0 wk
Sweet William
Dianthus barbatus
13 – 27 Mar
6-8 wk
8 May
0 wk
18 May
1 wk after
Snow-on-the-mountain
Euphorbia marginata
Season too short
15 – 29 Mar
2 Apr
6-8 wk
10 May
14 May
0 wk
9 Jun
5 wk after
Pinnate dahlia
Dahlia × pinnata
Greenhouse
13 – 27 Mar
13 Apr
6-8 wk
8 May
25 May
0 wk
Pinnate dahlia (tubers)
Dahlia × pinnata
Greenhouse
19 Mar – 16 Apr
27 Apr
4-8 wk
14 May
25 May
1 wk after
14 May
15 May
1 wk after
Foxglove
Digitalis purpurea
27 Feb – 13 Mar
8-10 wk
8 May
0 wk
21 May
2 wk after
Busy lizzie
Impatiens walleriana
Greenhouse
23 Feb – 23 Mar
9 May
8-12 wk
18 May
4 Jul
1 wk after
Creeping zinnia
Sanvitalia procumbens
Greenhouse
15 – 29 Mar
12 Apr
6-8 wk
10 May
24 May
0 wk
Hyacinth bean
Dolichos lablab
Season too short
16 – 30 Apr
4-6 wk
28 May
3 wk after
Chinese lantern
Physalis alkekengi
4 – 18 Mar
1 Apr
8-10 wk
13 May
27 May
1 wk after
Love in a mist
Nigella damascena
8 May
22 Jun
0 wk
9 May
12 Jun
0 wk
Strawflower
Xerochrysum bracteatum
Season too short
15 – 29 Mar
23 Mar
6-8 wk
10 May
0 wk
9 Jun
5 wk after
Purple-top vervain
Verbena bonariensis
18 Feb – 18 Mar
1 Apr
8-12 wk
13 May
27 May
1 wk after
Cardoon
Cynara cardunculus
Season too short
15 Feb – 15 Mar
16 Mar
8-12 wk
10 May
11 May
0 wk
Regal-foxtail
Ptilotus nobilis
Season too short
23 Feb – 23 Mar
8-12 wk
18 May
1 wk after
Globe amaranth
Gomphrena globosa
Season too short
23 Mar – 6 Apr
6-8 wk
18 May
1 wk after
Corn poppy
Papaver rhoeas
8 May
7 Jul
0 wk
9 May
27 Jun
0 wk
Snapdragon
Antirrhinum majus
13 Feb – 13 Mar
2 May
8-12 wk
8 May
27 Jun
0 wk
18 May
17 Jun
1 wk after
Flossflower
Ageratum houstonianum
Season too short
9 – 23 Mar
29 Mar
8-10 wk
18 May
24 May
1 wk after
Sweet pea
Lathyrus odoratus
13 Mar – 3 Apr
26 May
5-8 wk
8 May
30 Jun
0 wk
Stock
Matthiola incana
13 – 27 Mar
26 May
6-8 wk
8 May
7 Jul
0 wk
21 May
27 Jun
2 wk after
Wormwood
Artemisia absinthium
13 – 27 Mar
29 Apr
6-8 wk
8 May
10 Jun
0 wk
21 May
31 May
2 wk after
Mexican sunflower
Tithonia rotundifolia
Season too short
6 – 20 Apr
4-6 wk
18 May
1 wk after
Garden pansy
Viola × wittrockiana
27 Feb – 13 Mar
15 May
8-10 wk
8 May
10 Jul
0 wk
18 May
30 Jun
1 wk after
Petunia
Petunia
Season too short
15 Feb – 15 Mar
19 Mar
8-12 wk
10 May
14 May
0 wk
Sweet Scabious
Scabiosa atropurpurea
18 Mar – 1 Apr
15 Apr
6-8 wk
13 May
27 May
1 wk after
20 Jun
6 wk after
Common zinnia
Zinnia elegans
Greenhouse
29 Mar – 12 Apr
21 Apr
4-6 wk
10 May
19 May
0 wk
Common morning glory
Ipomoea purpurea
Season too short
13 – 27 Apr
3-5 wk
18 May
1 wk after
Garden cosmos
Cosmos bipinnatus
Greenhouse
29 Mar – 12 Apr
27 Apr
4-6 wk
10 May
25 May
0 wk
21 May
2 wk after
Scarlet milkweed
Asclepias curassavica
Season too short
5 Mar – 2 Apr
8-12 wk
28 May
3 wk after
Bee balm
Monarda didyma
13 Feb – 13 Mar
12 Apr
8-12 wk
8 May
7 Jun
0 wk
2 Jun
4 wk after
Yarrow
Achillea millefolium
13 – 27 Mar
30 Mar
6-8 wk
8 May
11 May
0 wk
21 May
2 wk after
Safflower
Carthamus tinctorius
8 May
10 Jun
0 wk
9 May
31 May
0 wk
Iceland poppy
Papaver nudicaule
Season too short
13 – 27 Mar
19 May
6-8 wk
8 May
30 Jun
0 wk
22 Apr
20 Jun
2 wk before
Bishop's flower
Ammi majus
27 Mar – 10 Apr
30 May
4-6 wk
8 May
27 Jun
0 wk
21 May
17 Jun
2 wk after
Drumsticks
Pycnosorus globosus
Season too short
23 Feb – 9 Mar
10-12 wk
18 May
1 wk after
Sunflower
Helianthus annuus
Fleece
20 – 27 Apr
30 May
3-4 wk
18 May
20 Jun
1 wk after
21 May
10 Jun
2 wk after
China aster
Callistephus chinensis
2 – 16 Apr
4 May
6-8 wk
28 May
15 Jun
3 wk after
20 Jun
6 wk after
Annual phlox
Phlox drummondii
Greenhouse
13 – 27 Mar
12 Apr
6-8 wk
8 May
24 May
0 wk
21 May
2 wk after
Hollyhock
Alcea rosea
13 – 27 Mar
6-8 wk
8 May
0 wk
21 May
2 wk after
Alpine delphinium
Delphinium elatum
13 Feb – 13 Mar
12 Apr
8-12 wk
8 May
7 Jun
0 wk
2 Jun
4 wk after
African marigold
Tagetes erecta
Greenhouse
15 – 29 Mar
12 Apr
6-8 wk
10 May
24 May
0 wk
Black-eyed Susan
Rudbeckia hirta
18 Mar – 1 Apr
24 Apr
6-8 wk
13 May
5 Jun
1 wk after
20 Jun
6 wk after
Wood sage
Salvia nemorosa
27 Feb – 13 Mar
2 Apr
8-10 wk
8 May
28 May
0 wk
2 Jun
4 wk after
Black-eyed susan vine
Thunbergia alata
Season too short
9 Mar – 6 Apr
6-10 wk
18 May
1 wk after
California goldenpoppy
Eschscholzia californica
8 May
30 Jun
0 wk
9 May
20 Jun
0 wk
Painted tongue
Salpiglossis sinuata
Fleece
9 – 23 Mar
21 Apr
8-10 wk
18 May
16 Jun
1 wk after
Water forget-me-not
Myosotis scorpioides
13 – 27 Mar
29 Apr
6-8 wk
8 May
10 Jun
0 wk
21 May
31 May
2 wk after