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Method
Rel. frost
Last spring frost (0°C) 13 May Frost 9 of 10 years · 20 years of data
Frost-free season 123 days 13 May – 13 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)
25 Mar – 8 Apr
14 Jun
5-7 wk
13 May
19 Jul
0 wk
17 May
9 Jul
1 wk after
Broccoli
Brassica oleracea (Italica-gruppen)
1 – 15 Apr
26 Jun
4-6 wk
13 May
24 Jul
0 wk
17 May
14 Jul
1 wk after
Chili pepper
Capsicum annuum
Season too short
28 Feb – 28 Mar
8-12 wk
23 May
1 wk after
Curly Kale
Brassica oleracea (Curly Kale-gruppen)
25 Mar – 8 Apr
9 Jun
5-7 wk
13 May
14 Jul
0 wk
13 May
4 Jul
0 wk
Garden cucumber
Cucumis sativus
Season too short
25 Apr – 2 May
3-4 wk
23 May
1 wk after
Florence Fennel
Foeniculum vulgare
14 – 21 May
18 May
4-5 wk
18 Jun
5 wk after
1 Jul
7 wk after
Butter bean
Phaseolus lunatus
Season too short
26 May – 2 Jun
3-4 wk
23 Jun
6 wk after
Onion
Allium cepa (Cepa-gruppen)
18 Feb – 18 Mar
22 Mar
8-12 wk
13 May
17 May
0 wk
3 Jun
3 wk after
Onion (sets)
Allium cepa (Cepa-gruppen)
17 May
6 Jun
1 wk after
17 May
27 May
1 wk after
Maize
Zea mays
Season too short
17 – 24 Apr
3-4 wk
15 May
0 wk
Swiss Chard
Beta vulgaris (Flavescens-gruppen)
20 – 27 Apr
20 Jun
3-4 wk
18 May
11 Jul
1 wk after
3 Jun
1 Jul
3 wk after
Carrot
Daucus carota subsp. sativus var. sativus
13 May
30 Jun
0 wk
13 May
20 Jun
0 wk
Palm Kale
Brassica oleracea (Palm Kale-gruppen)
25 Mar – 8 Apr
9 Jun
5-7 wk
13 May
14 Jul
0 wk
13 May
4 Jul
0 wk
Potato
Solanum tuberosum
17 Apr – 1 May
21 May
4-6 wk
29 May
18 Jun
2 wk after
29 May
8 Jun
2 wk after
Ornamental Kale
Brassica oleracea (Ornamental-gruppen)
25 Mar – 8 Apr
15 Jun
5-7 wk
13 May
20 Jul
0 wk
17 May
10 Jul
1 wk after
Pumpkin
Cucurbita pepo
Season too short
25 Apr – 2 May
3-4 wk
23 May
1 wk after
Beetroot
Beta vulgaris (Conditiva-gruppen)
20 – 27 Apr
27 May
3-4 wk
18 May
17 Jun
1 wk after
3 Jun
7 Jun
3 wk after
Red Cabbage
Brassica oleracea (Red Cabbage-gruppen)
1 – 15 Apr
21 Jun
4-6 wk
13 May
19 Jul
0 wk
Lettuce
Lactuca sativa
15 – 22 Apr
4 Jul
3-4 wk
13 May
25 Jul
0 wk
17 May
15 Jul
1 wk after
Savoy Cabbage
Brassica oleracea (Savoy Cabbage-gruppen)
1 – 15 Apr
21 Jun
4-6 wk
13 May
19 Jul
0 wk
Shallot (bulbs)
Allium cepa (Aggregatum-gruppen)
15 – 29 Apr
25 May
2-4 wk
13 May
8 Jun
0 wk
13 May
29 May
0 wk
Shallot (sets)
Allium cepa (Aggregatum-gruppen)
17 May
6 Jun
1 wk after
17 May
27 May
1 wk after
Spinach
Spinacia oleracea
15 – 22 Apr
23 Jul
3-4 wk
13 May
13 Aug
0 wk
9 May
3 Aug
1 wk before
Sweet potato
Ipomoea batatas
14 – 28 Jun
4-6 wk
26 Jul
11 wk after
Garden tomato
Solanum lycopersicum
Season too short
20 Mar – 3 Apr
6-8 wk
15 May
0 wk
Tomatillo
Physalis ixocarpa
Common Bean
Phaseolus vulgaris
Season too short
17 Apr – 1 May
2-4 wk
15 May
0 wk
3 Jun
3 wk after
White Cabbage
Brassica oleracea (White Cabbage-gruppen)
1 – 15 Apr
21 Jun
4-6 wk
13 May
19 Jul
0 wk
Garden pea
Pisum sativum
15 – 22 Apr
19 Jun
3-4 wk
13 May
10 Jul
0 wk
17 May
30 Jun
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
11 – 25 Apr
4-6 wk
23 May
1 wk after
Lemon balm
Melissa officinalis
4 – 18 Mar
15 May
8-10 wk
13 May
10 Jul
0 wk
17 Jun
30 Jun
5 wk after
Dill
Anethum graveolens
17 May
11 Jul
1 wk after
Wild chives
Allium schoenoprasum
18 Mar – 1 Apr
2 Jun
6-8 wk
13 May
14 Jul
0 wk
17 May
4 Jul
1 wk after
Spearmint
Mentha spicata
18 Feb – 18 Mar
19 May
8-12 wk
13 May
14 Jul
0 wk
17 Jun
4 Jul
5 wk after
Coriander
Coriandrum sativum
13 May
31 Jul
0 wk
3 Jun
21 Jul
3 wk after
Garden sage
Salvia officinalis
9 – 23 Mar
4 May
8-10 wk
18 May
29 Jun
1 wk after
Common thyme
Thymus vulgaris
4 – 18 Mar
9 May
8-10 wk
13 May
4 Jul
0 wk
Oregano
Origanum vulgare
18 Mar – 1 Apr
23 May
6-8 wk
13 May
4 Jul
0 wk
17 Jun
24 Jun
5 wk after
Parsley
Petroselinum crispum
18 Mar – 1 Apr
23 May
6-8 wk
13 May
4 Jul
0 wk
17 May
24 Jun
1 wk after
Rosemary
Salvia rosmarinus
9 Feb – 9 Mar
18 Mar
10-14 wk
18 May
27 May
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
25 Apr – 2 May
3-4 wk
23 May
1 wk after
Cornflower
Centaurea cyanus
13 May
14 Jul
0 wk
17 May
4 Jul
1 wk after
Statice
Limonium sinuatum
Greenhouse
6 – 20 Mar
29 Mar
8-10 wk
15 May
24 May
0 wk
Sweet William
Dianthus barbatus
18 Mar – 1 Apr
6-8 wk
13 May
0 wk
29 May
2 wk after
Snow-on-the-mountain
Euphorbia marginata
Greenhouse
20 Mar – 3 Apr
12 Apr
6-8 wk
15 May
24 May
0 wk
23 Jun
6 wk after
Pinnate dahlia
Dahlia × pinnata
Fleece
23 Mar – 6 Apr
12 Apr
6-8 wk
18 May
24 May
1 wk after
Pinnate dahlia (tubers)
Dahlia × pinnata
Fleece
8 Apr – 6 May
26 Apr
4-8 wk
3 Jun
3 wk after
3 Jun
3 wk after
Foxglove
Digitalis purpurea
4 – 18 Mar
8-10 wk
13 May
0 wk
3 Jun
3 wk after
Busy lizzie
Impatiens walleriana
Greenhouse
28 Feb – 28 Mar
24 May
8-12 wk
23 May
19 Jul
1 wk after
Creeping zinnia
Sanvitalia procumbens
Fleece
28 Mar – 11 Apr
13 Apr
6-8 wk
23 May
25 May
1 wk after
Hyacinth bean
Dolichos lablab
Season too short
21 Apr – 5 May
4-6 wk
2 Jun
3 wk after
Chinese lantern
Physalis alkekengi
9 – 23 Mar
6 Apr
8-10 wk
18 May
1 Jun
1 wk after
Love in a mist
Nigella damascena
13 May
25 Jun
0 wk
17 May
15 Jun
1 wk after
Strawflower
Xerochrysum bracteatum
Greenhouse
20 Mar – 3 Apr
2 Apr
6-8 wk
15 May
0 wk
23 Jun
6 wk after
Purple-top vervain
Verbena bonariensis
23 Feb – 23 Mar
6 Apr
8-12 wk
18 May
1 Jun
1 wk after
Cardoon
Cynara cardunculus
Greenhouse
20 Feb – 20 Mar
20 Mar
8-12 wk
15 May
15 May
0 wk
Regal-foxtail
Ptilotus nobilis
Season too short
28 Feb – 28 Mar
8-12 wk
23 May
1 wk after
Globe amaranth
Gomphrena globosa
Season too short
28 Mar – 11 Apr
6-8 wk
23 May
1 wk after
Corn poppy
Papaver rhoeas
13 May
10 Jul
0 wk
17 May
30 Jun
1 wk after
Snapdragon
Antirrhinum majus
18 Feb – 18 Mar
5 May
8-12 wk
13 May
30 Jun
0 wk
29 May
20 Jun
2 wk after
Flossflower
Ageratum houstonianum
Greenhouse
14 – 28 Mar
8 Apr
8-10 wk
23 May
3 Jun
1 wk after
Sweet pea
Lathyrus odoratus
18 Mar – 8 Apr
30 May
5-8 wk
13 May
4 Jul
0 wk
Stock
Matthiola incana
18 Mar – 1 Apr
29 May
6-8 wk
13 May
10 Jul
0 wk
3 Jun
30 Jun
3 wk after
Wormwood
Artemisia absinthium
18 Mar – 1 Apr
3 May
6-8 wk
13 May
14 Jun
0 wk
3 Jun
4 Jun
3 wk after
Mexican sunflower
Tithonia rotundifolia
Season too short
11 – 25 Apr
4-6 wk
23 May
1 wk after
Garden pansy
Viola × wittrockiana
4 – 18 Mar
19 May
8-10 wk
13 May
14 Jul
0 wk
29 May
4 Jul
2 wk after
Petunia
Petunia
Greenhouse
20 Feb – 20 Mar
29 Mar
8-12 wk
15 May
24 May
0 wk
Sweet Scabious
Scabiosa atropurpurea
23 Mar – 6 Apr
20 Apr
6-8 wk
18 May
1 Jun
1 wk after
1 Jul
7 wk after
Common zinnia
Zinnia elegans
Greenhouse
3 – 17 Apr
6 May
4-6 wk
15 May
3 Jun
0 wk
Common morning glory
Ipomoea purpurea
Season too short
18 Apr – 2 May
3-5 wk
23 May
1 wk after
Garden cosmos
Cosmos bipinnatus
Fleece
11 – 25 Apr
26 Apr
4-6 wk
23 May
24 May
1 wk after
17 Jun
5 wk after
Scarlet milkweed
Asclepias curassavica
Season too short
10 Mar – 7 Apr
8-12 wk
2 Jun
3 wk after
Bee balm
Monarda didyma
18 Feb – 18 Mar
15 Apr
8-12 wk
13 May
10 Jun
0 wk
17 Jun
5 wk after
Yarrow
Achillea millefolium
18 Mar – 1 Apr
3 Apr
6-8 wk
13 May
15 May
0 wk
3 Jun
3 wk after
Safflower
Carthamus tinctorius
13 May
14 Jun
0 wk
17 May
4 Jun
1 wk after
Iceland poppy
Papaver nudicaule
Season too short
18 Mar – 1 Apr
23 May
6-8 wk
13 May
4 Jul
0 wk
25 Apr
24 Jun
3 wk before
Bishop's flower
Ammi majus
1 – 15 Apr
2 Jun
4-6 wk
13 May
30 Jun
0 wk
3 Jun
20 Jun
3 wk after
Drumsticks
Pycnosorus globosus
Season too short
28 Feb – 14 Mar
10-12 wk
23 May
1 wk after
Sunflower
Helianthus annuus
5 – 12 May
26 May
3-4 wk
2 Jun
16 Jun
3 wk after
17 Jun
5 wk after
China aster
Callistephus chinensis
7 – 21 Apr
15 May
6-8 wk
2 Jun
26 Jun
3 wk after
1 Jul
7 wk after
Annual phlox
Phlox drummondii
Fleece
20 Mar – 3 Apr
13 Apr
6-8 wk
15 May
25 May
0 wk
17 Jun
5 wk after
Hollyhock
Alcea rosea
18 Mar – 1 Apr
6-8 wk
13 May
0 wk
3 Jun
3 wk after
Alpine delphinium
Delphinium elatum
18 Feb – 18 Mar
15 Apr
8-12 wk
13 May
10 Jun
0 wk
17 Jun
5 wk after
African marigold
Tagetes erecta
Fleece
28 Mar – 11 Apr
13 Apr
6-8 wk
23 May
25 May
1 wk after
Black-eyed Susan
Rudbeckia hirta
23 Mar – 6 Apr
5 May
6-8 wk
18 May
16 Jun
1 wk after
1 Jul
7 wk after
Wood sage
Salvia nemorosa
4 – 18 Mar
5 Apr
8-10 wk
13 May
31 May
0 wk
17 Jun
5 wk after
Black-eyed susan vine
Thunbergia alata
Season too short
14 Mar – 11 Apr
6-10 wk
23 May
1 wk after
California goldenpoppy
Eschscholzia californica
13 May
6 Jul
0 wk
17 May
26 Jun
1 wk after
Painted tongue
Salpiglossis sinuata
24 Mar – 7 Apr
20 Apr
8-10 wk
2 Jun
15 Jun
3 wk after
Water forget-me-not
Myosotis scorpioides
18 Mar – 1 Apr
3 May
6-8 wk
13 May
14 Jun
0 wk
3 Jun
4 Jun
3 wk after