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Method
Rel. frost
Last spring frost (0°C) 10 May Frost 9 of 10 years · 20 years of data
Frost-free season 116 days 10 May – 3 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)
22 Mar – 5 Apr
15 Jun
5-7 wk
10 May
20 Jul
0 wk
14 May
10 Jul
1 wk after
Broccoli
Brassica oleracea (Italica-gruppen)
29 Mar – 12 Apr
27 Jun
4-6 wk
10 May
25 Jul
0 wk
14 May
15 Jul
1 wk after
Chili pepper
Capsicum annuum
Season too short
25 Feb – 25 Mar
8-12 wk
20 May
1 wk after
Curly Kale
Brassica oleracea (Curly Kale-gruppen)
22 Mar – 5 Apr
10 Jun
5-7 wk
10 May
15 Jul
0 wk
10 May
5 Jul
0 wk
Garden cucumber
Cucumis sativus
Season too short
22 – 29 Apr
3-4 wk
20 May
1 wk after
Florence Fennel
Foeniculum vulgare
11 – 18 May
16 May
4-5 wk
15 Jun
5 wk after
28 Jun
7 wk after
Butter bean
Phaseolus lunatus
Season too short
23 – 30 May
3-4 wk
20 Jun
6 wk after
Onion
Allium cepa (Cepa-gruppen)
15 Feb – 15 Mar
16 Mar
8-12 wk
10 May
11 May
0 wk
31 May
3 wk after
Onion (sets)
Allium cepa (Cepa-gruppen)
14 May
31 May
1 wk after
14 May
21 May
1 wk after
Maize
Zea mays
Season too short
14 – 21 Apr
3-4 wk
12 May
0 wk
Swiss Chard
Beta vulgaris (Flavescens-gruppen)
17 – 24 Apr
26 Jun
3-4 wk
15 May
17 Jul
1 wk after
31 May
7 Jul
3 wk after
Carrot
Daucus carota subsp. sativus var. sativus
10 May
5 Jul
0 wk
10 May
25 Jun
0 wk
Palm Kale
Brassica oleracea (Palm Kale-gruppen)
22 Mar – 5 Apr
10 Jun
5-7 wk
10 May
15 Jul
0 wk
10 May
5 Jul
0 wk
Potato
Solanum tuberosum
14 – 28 Apr
14 May
4-6 wk
26 May
11 Jun
2 wk after
26 May
1 Jun
2 wk after
Ornamental Kale
Brassica oleracea (Ornamental-gruppen)
22 Mar – 5 Apr
20 Jun
5-7 wk
10 May
25 Jul
0 wk
14 May
15 Jul
1 wk after
Pumpkin
Cucurbita pepo
Season too short
22 – 29 Apr
3-4 wk
20 May
1 wk after
Beetroot
Beta vulgaris (Conditiva-gruppen)
17 – 24 Apr
21 May
3-4 wk
15 May
11 Jun
1 wk after
31 May
1 Jun
3 wk after
Red Cabbage
Brassica oleracea (Red Cabbage-gruppen)
29 Mar – 12 Apr
22 Jun
4-6 wk
10 May
20 Jul
0 wk
Lettuce
Lactuca sativa
12 – 19 Apr
9 Jul
3-4 wk
10 May
30 Jul
0 wk
14 May
20 Jul
1 wk after
Savoy Cabbage
Brassica oleracea (Savoy Cabbage-gruppen)
29 Mar – 12 Apr
22 Jun
4-6 wk
10 May
20 Jul
0 wk
Shallot (bulbs)
Allium cepa (Aggregatum-gruppen)
12 – 26 Apr
23 May
2-4 wk
10 May
6 Jun
0 wk
10 May
27 May
0 wk
Shallot (sets)
Allium cepa (Aggregatum-gruppen)
14 May
31 May
1 wk after
14 May
21 May
1 wk after
Spinach
Spinacia oleracea
12 – 19 Apr
24 Jul
3-4 wk
10 May
14 Aug
0 wk
6 May
4 Aug
1 wk before
Sweet potato
Ipomoea batatas
11 – 25 Jun
4-6 wk
23 Jul
11 wk after
Garden tomato
Solanum lycopersicum
Season too short
17 – 31 Mar
6-8 wk
12 May
0 wk
Tomatillo
Physalis ixocarpa
Common Bean
Phaseolus vulgaris
Season too short
14 – 28 Apr
2-4 wk
12 May
0 wk
31 May
3 wk after
White Cabbage
Brassica oleracea (White Cabbage-gruppen)
29 Mar – 12 Apr
22 Jun
4-6 wk
10 May
20 Jul
0 wk
Garden pea
Pisum sativum
12 – 19 Apr
24 Jun
3-4 wk
10 May
15 Jul
0 wk
14 May
5 Jul
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
8 – 22 Apr
4-6 wk
20 May
1 wk after
Lemon balm
Melissa officinalis
1 – 15 Mar
20 May
8-10 wk
10 May
15 Jul
0 wk
14 Jun
5 Jul
5 wk after
Dill
Anethum graveolens
14 May
17 Jul
1 wk after
Wild chives
Allium schoenoprasum
15 – 29 Mar
3 Jun
6-8 wk
10 May
15 Jul
0 wk
14 May
5 Jul
1 wk after
Spearmint
Mentha spicata
15 Feb – 15 Mar
20 May
8-12 wk
10 May
15 Jul
0 wk
14 Jun
5 Jul
5 wk after
Coriander
Coriandrum sativum
10 May
6 Aug
0 wk
31 May
27 Jul
3 wk after
Garden sage
Salvia officinalis
6 – 20 Mar
5 May
8-10 wk
15 May
30 Jun
1 wk after
Common thyme
Thymus vulgaris
1 – 15 Mar
10 May
8-10 wk
10 May
5 Jul
0 wk
Oregano
Origanum vulgare
15 – 29 Mar
24 May
6-8 wk
10 May
5 Jul
0 wk
14 Jun
25 Jun
5 wk after
Parsley
Petroselinum crispum
15 – 29 Mar
24 May
6-8 wk
10 May
5 Jul
0 wk
14 May
25 Jun
1 wk after
Rosemary
Salvia rosmarinus
6 Feb – 6 Mar
23 Mar
10-14 wk
15 May
1 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
22 – 29 Apr
3-4 wk
20 May
1 wk after
Cornflower
Centaurea cyanus
10 May
15 Jul
0 wk
14 May
5 Jul
1 wk after
Statice
Limonium sinuatum
Greenhouse
3 – 17 Mar
30 Mar
8-10 wk
12 May
25 May
0 wk
Sweet William
Dianthus barbatus
15 – 29 Mar
6-8 wk
10 May
0 wk
26 May
2 wk after
Snow-on-the-mountain
Euphorbia marginata
Greenhouse
17 – 31 Mar
13 Apr
6-8 wk
12 May
25 May
0 wk
20 Jun
6 wk after
Pinnate dahlia
Dahlia × pinnata
Fleece
20 Mar – 3 Apr
13 Apr
6-8 wk
15 May
25 May
1 wk after
Pinnate dahlia (tubers)
Dahlia × pinnata
Fleece
5 Apr – 3 May
27 Apr
4-8 wk
31 May
3 wk after
31 May
3 wk after
Foxglove
Digitalis purpurea
1 – 15 Mar
8-10 wk
10 May
0 wk
31 May
3 wk after
Busy lizzie
Impatiens walleriana
Greenhouse
25 Feb – 25 Mar
25 May
8-12 wk
20 May
20 Jul
1 wk after
Creeping zinnia
Sanvitalia procumbens
Fleece
25 Mar – 8 Apr
7 Apr
6-8 wk
20 May
1 wk after
Hyacinth bean
Dolichos lablab
Season too short
18 Apr – 2 May
4-6 wk
30 May
3 wk after
Chinese lantern
Physalis alkekengi
6 – 20 Mar
12 Apr
8-10 wk
15 May
7 Jun
1 wk after
Love in a mist
Nigella damascena
10 May
30 Jun
0 wk
14 May
20 Jun
1 wk after
Strawflower
Xerochrysum bracteatum
Greenhouse
17 – 31 Mar
3 Apr
6-8 wk
12 May
15 May
0 wk
20 Jun
6 wk after
Purple-top vervain
Verbena bonariensis
20 Feb – 20 Mar
12 Apr
8-12 wk
15 May
7 Jun
1 wk after
Cardoon
Cynara cardunculus
Fleece
25 Feb – 25 Mar
21 Mar
8-12 wk
20 May
1 wk after
Regal-foxtail
Ptilotus nobilis
Season too short
25 Feb – 25 Mar
8-12 wk
20 May
1 wk after
Globe amaranth
Gomphrena globosa
Season too short
25 Mar – 8 Apr
6-8 wk
20 May
1 wk after
Corn poppy
Papaver rhoeas
10 May
15 Jul
0 wk
14 May
5 Jul
1 wk after
Snapdragon
Antirrhinum majus
15 Feb – 15 Mar
10 May
8-12 wk
10 May
5 Jul
0 wk
26 May
25 Jun
2 wk after
Flossflower
Ageratum houstonianum
Greenhouse
11 – 25 Mar
9 Apr
8-10 wk
20 May
4 Jun
1 wk after
Sweet pea
Lathyrus odoratus
15 Mar – 5 Apr
31 May
5-8 wk
10 May
5 Jul
0 wk
Stock
Matthiola incana
15 – 29 Mar
3 Jun
6-8 wk
10 May
15 Jul
0 wk
31 May
5 Jul
3 wk after
Wormwood
Artemisia absinthium
15 – 29 Mar
4 May
6-8 wk
10 May
15 Jun
0 wk
31 May
5 Jun
3 wk after
Mexican sunflower
Tithonia rotundifolia
Season too short
8 – 22 Apr
4-6 wk
20 May
1 wk after
Garden pansy
Viola × wittrockiana
1 – 15 Mar
20 May
8-10 wk
10 May
15 Jul
0 wk
26 May
5 Jul
2 wk after
Petunia
Petunia
Greenhouse
17 Feb – 17 Mar
30 Mar
8-12 wk
12 May
25 May
0 wk
Sweet Scabious
Scabiosa atropurpurea
20 Mar – 3 Apr
26 Apr
6-8 wk
15 May
7 Jun
1 wk after
28 Jun
7 wk after
Common zinnia
Zinnia elegans
Greenhouse
31 Mar – 14 Apr
7 May
4-6 wk
12 May
4 Jun
0 wk
Common morning glory
Ipomoea purpurea
Season too short
15 – 29 Apr
3-5 wk
20 May
1 wk after
Garden cosmos
Cosmos bipinnatus
Fleece
8 – 22 Apr
27 Apr
4-6 wk
20 May
25 May
1 wk after
14 Jun
5 wk after
Scarlet milkweed
Asclepias curassavica
Season too short
7 Mar – 4 Apr
8-12 wk
30 May
3 wk after
Bee balm
Monarda didyma
15 Feb – 15 Mar
20 Apr
8-12 wk
10 May
15 Jun
0 wk
14 Jun
5 wk after
Yarrow
Achillea millefolium
15 – 29 Mar
4 Apr
6-8 wk
10 May
16 May
0 wk
31 May
3 wk after
Safflower
Carthamus tinctorius
10 May
15 Jun
0 wk
14 May
5 Jun
1 wk after
Iceland poppy
Papaver nudicaule
Season too short
15 – 29 Mar
24 May
6-8 wk
10 May
5 Jul
0 wk
22 Apr
25 Jun
3 wk before
Bishop's flower
Ammi majus
29 Mar – 12 Apr
7 Jun
4-6 wk
10 May
5 Jul
0 wk
31 May
25 Jun
3 wk after
Drumsticks
Pycnosorus globosus
Season too short
25 Feb – 11 Mar
10-12 wk
20 May
1 wk after
Sunflower
Helianthus annuus
2 – 9 May
31 May
3-4 wk
30 May
21 Jun
3 wk after
14 Jun
5 wk after
China aster
Callistephus chinensis
4 – 18 Apr
20 May
6-8 wk
30 May
1 Jul
3 wk after
28 Jun
7 wk after
Annual phlox
Phlox drummondii
Fleece
17 – 31 Mar
7 Apr
6-8 wk
12 May
19 May
0 wk
14 Jun
5 wk after
Hollyhock
Alcea rosea
15 – 29 Mar
6-8 wk
10 May
0 wk
31 May
3 wk after
Alpine delphinium
Delphinium elatum
15 Feb – 15 Mar
20 Apr
8-12 wk
10 May
15 Jun
0 wk
14 Jun
5 wk after
African marigold
Tagetes erecta
Fleece
25 Mar – 8 Apr
7 Apr
6-8 wk
20 May
1 wk after
Black-eyed Susan
Rudbeckia hirta
20 Mar – 3 Apr
10 May
6-8 wk
15 May
21 Jun
1 wk after
28 Jun
7 wk after
Wood sage
Salvia nemorosa
1 – 15 Mar
10 Apr
8-10 wk
10 May
5 Jun
0 wk
14 Jun
5 wk after
Black-eyed susan vine
Thunbergia alata
Season too short
11 Mar – 8 Apr
6-10 wk
20 May
1 wk after
California goldenpoppy
Eschscholzia californica
10 May
10 Jul
0 wk
14 May
30 Jun
1 wk after
Painted tongue
Salpiglossis sinuata
21 Mar – 4 Apr
18 Apr
8-10 wk
30 May
13 Jun
3 wk after
Water forget-me-not
Myosotis scorpioides
15 – 29 Mar
4 May
6-8 wk
10 May
15 Jun
0 wk
31 May
5 Jun
3 wk after