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Method
Rel. frost
Last spring frost (0°C) 3 May Frost 9 of 10 years · 20 years of data
Frost-free season 139 days 3 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)
15 – 29 Mar
13 Jun
5-7 wk
3 May
18 Jul
0 wk
4 May
8 Jul
0 wk
Broccoli
Brassica oleracea (Italica-gruppen)
22 Mar – 5 Apr
25 Jun
4-6 wk
3 May
23 Jul
0 wk
4 May
13 Jul
0 wk
Chili pepper
Capsicum annuum
Season too short
19 Feb – 19 Mar
8-12 wk
14 May
2 wk after
Curly Kale
Brassica oleracea (Curly Kale-gruppen)
15 – 29 Mar
8 Jun
5-7 wk
3 May
13 Jul
0 wk
3 May
3 Jul
0 wk
Garden cucumber
Cucumis sativus
Greenhouse
16 – 23 Apr
25 Apr
3-4 wk
14 May
16 May
2 wk after
Florence Fennel
Foeniculum vulgare
2 – 9 May
23 May
4-5 wk
6 Jun
20 Jun
5 wk after
15 Jun
6 wk after
Butter bean
Phaseolus lunatus
Season too short
16 – 23 May
3-4 wk
13 Jun
6 wk after
Onion
Allium cepa (Cepa-gruppen)
8 Feb – 8 Mar
21 Mar
8-12 wk
3 May
16 May
0 wk
16 May
2 wk after
Onion (sets)
Allium cepa (Cepa-gruppen)
4 May
5 Jun
0 wk
4 May
26 May
0 wk
Maize
Zea mays
Greenhouse
9 – 16 Apr
15 Apr
3-4 wk
7 May
1 wk after
Swiss Chard
Beta vulgaris (Flavescens-gruppen)
11 – 18 Apr
2 Jul
3-4 wk
9 May
23 Jul
1 wk after
16 May
13 Jul
2 wk after
Carrot
Daucus carota subsp. sativus var. sativus
3 May
3 Jul
0 wk
3 May
23 Jun
0 wk
Palm Kale
Brassica oleracea (Palm Kale-gruppen)
15 – 29 Mar
8 Jun
5-7 wk
3 May
13 Jul
0 wk
3 May
3 Jul
0 wk
Potato
Solanum tuberosum
1 – 15 Apr
19 May
4-6 wk
13 May
16 Jun
1 wk after
13 May
6 Jun
1 wk after
Ornamental Kale
Brassica oleracea (Ornamental-gruppen)
15 – 29 Mar
18 Jun
5-7 wk
3 May
23 Jul
0 wk
4 May
13 Jul
0 wk
Pumpkin
Cucurbita pepo
Greenhouse
16 – 23 Apr
7 May
3-4 wk
14 May
28 May
2 wk after
Beetroot
Beta vulgaris (Conditiva-gruppen)
11 – 18 Apr
22 May
3-4 wk
9 May
12 Jun
1 wk after
16 May
2 Jun
2 wk after
Red Cabbage
Brassica oleracea (Red Cabbage-gruppen)
22 Mar – 5 Apr
20 Jun
4-6 wk
3 May
18 Jul
0 wk
Lettuce
Lactuca sativa
5 – 12 Apr
7 Jul
3-4 wk
3 May
28 Jul
0 wk
4 May
18 Jul
0 wk
Savoy Cabbage
Brassica oleracea (Savoy Cabbage-gruppen)
22 Mar – 5 Apr
20 Jun
4-6 wk
3 May
18 Jul
0 wk
Shallot (bulbs)
Allium cepa (Aggregatum-gruppen)
5 – 19 Apr
25 May
2-4 wk
3 May
8 Jun
0 wk
3 May
29 May
0 wk
Shallot (sets)
Allium cepa (Aggregatum-gruppen)
4 May
5 Jun
0 wk
4 May
26 May
0 wk
Spinach
Spinacia oleracea
5 – 12 Apr
22 Jul
3-4 wk
3 May
12 Aug
0 wk
30 Apr
2 Aug
0 wk
Sweet potato
Ipomoea batatas
28 May – 11 Jun
4-6 wk
9 Jul
10 wk after
Garden tomato
Solanum lycopersicum
Greenhouse
12 – 26 Mar
25 Mar
6-8 wk
7 May
1 wk after
Tomatillo
Physalis ixocarpa
Common Bean
Phaseolus vulgaris
Fleece
16 – 30 Apr
2 May
2-4 wk
14 May
16 May
2 wk after
28 May
4 wk after
White Cabbage
Brassica oleracea (White Cabbage-gruppen)
22 Mar – 5 Apr
20 Jun
4-6 wk
3 May
18 Jul
0 wk
Garden pea
Pisum sativum
5 – 12 Apr
22 Jun
3-4 wk
3 May
13 Jul
0 wk
4 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
Greenhouse
2 – 16 Apr
15 Apr
4-6 wk
14 May
2 wk after
Lemon balm
Melissa officinalis
22 Feb – 8 Mar
18 May
8-10 wk
3 May
13 Jul
0 wk
28 May
3 Jul
4 wk after
Dill
Anethum graveolens
4 May
23 Jul
0 wk
Wild chives
Allium schoenoprasum
8 – 22 Mar
1 Jun
6-8 wk
3 May
13 Jul
0 wk
4 May
3 Jul
0 wk
Spearmint
Mentha spicata
8 Feb – 8 Mar
18 May
8-12 wk
3 May
13 Jul
0 wk
28 May
3 Jul
4 wk after
Coriander
Coriandrum sativum
3 May
12 Aug
0 wk
16 May
2 Aug
2 wk after
Garden sage
Salvia officinalis
28 Feb – 14 Mar
3 May
8-10 wk
9 May
28 Jun
1 wk after
Common thyme
Thymus vulgaris
22 Feb – 8 Mar
8 May
8-10 wk
3 May
3 Jul
0 wk
Oregano
Origanum vulgare
8 – 22 Mar
22 May
6-8 wk
3 May
3 Jul
0 wk
28 May
23 Jun
4 wk after
Parsley
Petroselinum crispum
8 – 22 Mar
22 May
6-8 wk
3 May
3 Jul
0 wk
4 May
23 Jun
0 wk
Rosemary
Salvia rosmarinus
31 Jan – 28 Feb
31 Mar
10-14 wk
9 May
9 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
16 – 23 Apr
22 Apr
3-4 wk
14 May
2 wk after
Cornflower
Centaurea cyanus
3 May
13 Jul
0 wk
4 May
3 Jul
0 wk
Statice
Limonium sinuatum
Fleece
5 – 19 Mar
31 Mar
8-10 wk
14 May
26 May
2 wk after
Sweet William
Dianthus barbatus
8 – 22 Mar
6-8 wk
3 May
0 wk
13 May
1 wk after
Snow-on-the-mountain
Euphorbia marginata
Fleece
19 Mar – 2 Apr
14 Apr
6-8 wk
14 May
26 May
2 wk after
22 Jun
7 wk after
Pinnate dahlia
Dahlia × pinnata
Fleece
14 – 28 Mar
17 Apr
6-8 wk
9 May
29 May
1 wk after
Pinnate dahlia (tubers)
Dahlia × pinnata
Fleece
21 Mar – 18 Apr
1 May
4-8 wk
16 May
29 May
2 wk after
16 May
19 May
2 wk after
Foxglove
Digitalis purpurea
22 Feb – 8 Mar
8-10 wk
3 May
0 wk
16 May
2 wk after
Busy lizzie
Impatiens walleriana
14 Mar – 11 Apr
26 Apr
8-12 wk
6 Jun
21 Jun
5 wk after
Creeping zinnia
Sanvitalia procumbens
Fleece
19 Mar – 2 Apr
24 Apr
6-8 wk
14 May
5 Jun
2 wk after
Hyacinth bean
Dolichos lablab
Season too short
11 – 25 Apr
4-6 wk
23 May
3 wk after
Chinese lantern
Physalis alkekengi
28 Feb – 14 Mar
18 Apr
8-10 wk
9 May
13 Jun
1 wk after
Love in a mist
Nigella damascena
3 May
28 Jun
0 wk
4 May
18 Jun
0 wk
Strawflower
Xerochrysum bracteatum
Fleece
19 Mar – 2 Apr
4 Apr
6-8 wk
14 May
16 May
2 wk after
22 Jun
7 wk after
Purple-top vervain
Verbena bonariensis
14 Feb – 14 Mar
18 Apr
8-12 wk
9 May
13 Jun
1 wk after
Cardoon
Cynara cardunculus
Fleece
19 Feb – 19 Mar
19 Mar
8-12 wk
14 May
14 May
2 wk after
Regal-foxtail
Ptilotus nobilis
Season too short
19 Feb – 19 Mar
8 Mar
8-12 wk
14 May
2 wk after
Globe amaranth
Gomphrena globosa
Season too short
19 Mar – 2 Apr
22 Mar
6-8 wk
14 May
2 wk after
Corn poppy
Papaver rhoeas
3 May
13 Jul
0 wk
4 May
3 Jul
0 wk
Snapdragon
Antirrhinum majus
8 Feb – 8 Mar
8 May
8-12 wk
3 May
3 Jul
0 wk
13 May
23 Jun
1 wk after
Flossflower
Ageratum houstonianum
Fleece
14 – 28 Mar
10 Apr
8-10 wk
23 May
5 Jun
3 wk after
Sweet pea
Lathyrus odoratus
8 – 29 Mar
29 May
5-8 wk
3 May
3 Jul
0 wk
Stock
Matthiola incana
8 – 22 Mar
1 Jun
6-8 wk
3 May
13 Jul
0 wk
16 May
3 Jul
2 wk after
Wormwood
Artemisia absinthium
8 – 22 Mar
2 May
6-8 wk
3 May
13 Jun
0 wk
16 May
3 Jun
2 wk after
Mexican sunflower
Tithonia rotundifolia
Season too short
2 – 16 Apr
4-6 wk
14 May
2 wk after
Garden pansy
Viola × wittrockiana
22 Feb – 8 Mar
18 May
8-10 wk
3 May
13 Jul
0 wk
13 May
3 Jul
1 wk after
Petunia
Petunia
Fleece
19 Feb – 19 Mar
31 Mar
8-12 wk
14 May
26 May
2 wk after
Sweet Scabious
Scabiosa atropurpurea
14 – 28 Mar
2 May
6-8 wk
9 May
13 Jun
1 wk after
15 Jun
6 wk after
Common zinnia
Zinnia elegans
Fleece
2 – 16 Apr
15 Apr
4-6 wk
14 May
2 wk after
Common morning glory
Ipomoea purpurea
Greenhouse
9 – 23 Apr
22 Apr
3-5 wk
14 May
2 wk after
Garden cosmos
Cosmos bipinnatus
Fleece
2 – 16 Apr
1 May
4-6 wk
14 May
29 May
2 wk after
28 May
4 wk after
Scarlet milkweed
Asclepias curassavica
Greenhouse
28 Feb – 28 Mar
7 Apr
8-12 wk
23 May
2 Jun
3 wk after
Bee balm
Monarda didyma
8 Feb – 8 Mar
18 Apr
8-12 wk
3 May
13 Jun
0 wk
28 May
3 Jun
4 wk after
Yarrow
Achillea millefolium
8 – 22 Mar
2 Apr
6-8 wk
3 May
14 May
0 wk
16 May
2 wk after
Safflower
Carthamus tinctorius
3 May
13 Jun
0 wk
4 May
3 Jun
0 wk
Iceland poppy
Papaver nudicaule
Season too short
8 – 22 Mar
22 May
6-8 wk
3 May
3 Jul
0 wk
17 Apr
23 Jun
2 wk before
Bishop's flower
Ammi majus
22 Mar – 5 Apr
5 Jun
4-6 wk
3 May
3 Jul
0 wk
16 May
23 Jun
2 wk after
Drumsticks
Pycnosorus globosus
Season too short
19 Feb – 5 Mar
28 Feb
10-12 wk
14 May
2 wk after
Sunflower
Helianthus annuus
25 Apr – 2 May
8 Jun
3-4 wk
23 May
29 Jun
3 wk after
28 May
19 Jun
4 wk after
China aster
Callistephus chinensis
28 Mar – 11 Apr
28 May
6-8 wk
23 May
9 Jul
3 wk after
15 Jun
29 Jun
6 wk after
Annual phlox
Phlox drummondii
19 Mar – 2 Apr
1 Apr
6-8 wk
14 May
2 wk after
15 Jun
6 wk after
Hollyhock
Alcea rosea
8 – 22 Mar
6-8 wk
3 May
0 wk
16 May
2 wk after
Alpine delphinium
Delphinium elatum
8 Feb – 8 Mar
18 Apr
8-12 wk
3 May
13 Jun
0 wk
28 May
3 Jun
4 wk after
African marigold
Tagetes erecta
Fleece
19 Mar – 2 Apr
24 Apr
6-8 wk
14 May
5 Jun
2 wk after
Black-eyed Susan
Rudbeckia hirta
14 – 28 Mar
18 May
6-8 wk
9 May
29 Jun
1 wk after
15 Jun
19 Jun
6 wk after
Wood sage
Salvia nemorosa
22 Feb – 8 Mar
8 Apr
8-10 wk
3 May
3 Jun
0 wk
28 May
4 wk after
Black-eyed susan vine
Thunbergia alata
Greenhouse
5 Mar – 2 Apr
1 Apr
6-10 wk
14 May
2 wk after
California goldenpoppy
Eschscholzia californica
3 May
13 Jul
0 wk
4 May
3 Jul
0 wk
Painted tongue
Salpiglossis sinuata
14 – 28 Mar
25 Apr
8-10 wk
23 May
20 Jun
3 wk after
Water forget-me-not
Myosotis scorpioides
8 – 22 Mar
2 May
6-8 wk
3 May
13 Jun
0 wk
16 May
3 Jun
2 wk after