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Method
Rel. frost
Last spring frost (0°C) 11 May Frost 9 of 10 years · 20 years of data
Frost-free season 125 days 11 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)
23 Mar – 6 Apr
13 Jun
5-7 wk
11 May
18 Jul
0 wk
12 May
8 Jul
0 wk
Broccoli
Brassica oleracea (Italica-gruppen)
30 Mar – 13 Apr
25 Jun
4-6 wk
11 May
23 Jul
0 wk
12 May
13 Jul
0 wk
Chili pepper
Capsicum annuum
Season too short
26 Feb – 26 Mar
8-12 wk
21 May
1 wk after
Curly Kale
Brassica oleracea (Curly Kale-gruppen)
23 Mar – 6 Apr
8 Jun
5-7 wk
11 May
13 Jul
0 wk
11 May
3 Jul
0 wk
Garden cucumber
Cucumis sativus
Season too short
23 – 30 Apr
3-4 wk
21 May
1 wk after
Florence Fennel
Foeniculum vulgare
Fleece
26 Apr – 3 May
27 May
4-5 wk
31 May
24 Jun
3 wk after
5 Jun
14 Jun
4 wk after
Butter bean
Phaseolus lunatus
Season too short
24 – 31 May
3-4 wk
21 Jun
6 wk after
Onion
Allium cepa (Cepa-gruppen)
16 Feb – 16 Mar
9 Mar
8-12 wk
11 May
0 wk
24 May
2 wk after
Onion (sets)
Allium cepa (Cepa-gruppen)
12 May
24 May
0 wk
12 May
14 May
0 wk
Maize
Zea mays
Season too short
15 – 22 Apr
3-4 wk
13 May
0 wk
Swiss Chard
Beta vulgaris (Flavescens-gruppen)
18 – 25 Apr
23 Jun
3-4 wk
16 May
14 Jul
1 wk after
24 May
4 Jul
2 wk after
Carrot
Daucus carota subsp. sativus var. sativus
11 May
3 Jul
0 wk
11 May
23 Jun
0 wk
Palm Kale
Brassica oleracea (Palm Kale-gruppen)
23 Mar – 6 Apr
8 Jun
5-7 wk
11 May
13 Jul
0 wk
11 May
3 Jul
0 wk
Potato
Solanum tuberosum
9 – 23 Apr
7 May
4-6 wk
21 May
4 Jun
1 wk after
21 May
25 May
1 wk after
Ornamental Kale
Brassica oleracea (Ornamental-gruppen)
23 Mar – 6 Apr
18 Jun
5-7 wk
11 May
23 Jul
0 wk
12 May
13 Jul
0 wk
Pumpkin
Cucurbita pepo
Season too short
23 – 30 Apr
3-4 wk
21 May
1 wk after
Beetroot
Beta vulgaris (Conditiva-gruppen)
18 – 25 Apr
14 May
3-4 wk
16 May
4 Jun
1 wk after
24 May
25 May
2 wk after
Red Cabbage
Brassica oleracea (Red Cabbage-gruppen)
30 Mar – 13 Apr
20 Jun
4-6 wk
11 May
18 Jul
0 wk
Lettuce
Lactuca sativa
13 – 20 Apr
7 Jul
3-4 wk
11 May
28 Jul
0 wk
12 May
18 Jul
0 wk
Savoy Cabbage
Brassica oleracea (Savoy Cabbage-gruppen)
30 Mar – 13 Apr
20 Jun
4-6 wk
11 May
18 Jul
0 wk
Shallot (bulbs)
Allium cepa (Aggregatum-gruppen)
13 – 27 Apr
15 May
2-4 wk
11 May
29 May
0 wk
11 May
19 May
0 wk
Shallot (sets)
Allium cepa (Aggregatum-gruppen)
12 May
24 May
0 wk
12 May
14 May
0 wk
Spinach
Spinacia oleracea
13 – 20 Apr
22 Jul
3-4 wk
11 May
12 Aug
0 wk
8 May
2 Aug
0 wk
Sweet potato
Ipomoea batatas
5 – 19 Jun
4-6 wk
17 Jul
10 wk after
Garden tomato
Solanum lycopersicum
Season too short
18 Mar – 1 Apr
6-8 wk
13 May
0 wk
Tomatillo
Physalis ixocarpa
Common Bean
Phaseolus vulgaris
Season too short
15 – 29 Apr
2-4 wk
13 May
0 wk
24 May
2 wk after
White Cabbage
Brassica oleracea (White Cabbage-gruppen)
30 Mar – 13 Apr
20 Jun
4-6 wk
11 May
18 Jul
0 wk
Garden pea
Pisum sativum
13 – 20 Apr
22 Jun
3-4 wk
11 May
13 Jul
0 wk
12 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
Season too short
9 – 23 Apr
4-6 wk
21 May
1 wk after
Lemon balm
Melissa officinalis
2 – 16 Mar
18 May
8-10 wk
11 May
13 Jul
0 wk
5 Jun
3 Jul
4 wk after
Dill
Anethum graveolens
12 May
14 Jul
0 wk
Wild chives
Allium schoenoprasum
16 – 30 Mar
1 Jun
6-8 wk
11 May
13 Jul
0 wk
12 May
3 Jul
0 wk
Spearmint
Mentha spicata
16 Feb – 16 Mar
18 May
8-12 wk
11 May
13 Jul
0 wk
5 Jun
3 Jul
4 wk after
Coriander
Coriandrum sativum
11 May
3 Aug
0 wk
24 May
24 Jul
2 wk after
Garden sage
Salvia officinalis
7 – 21 Mar
3 May
8-10 wk
16 May
28 Jun
1 wk after
Common thyme
Thymus vulgaris
2 – 16 Mar
8 May
8-10 wk
11 May
3 Jul
0 wk
Oregano
Origanum vulgare
16 – 30 Mar
22 May
6-8 wk
11 May
3 Jul
0 wk
5 Jun
23 Jun
4 wk after
Parsley
Petroselinum crispum
16 – 30 Mar
22 May
6-8 wk
11 May
3 Jul
0 wk
12 May
23 Jun
0 wk
Rosemary
Salvia rosmarinus
7 Feb – 7 Mar
22 Mar
10-14 wk
16 May
31 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
23 – 30 Apr
3-4 wk
21 May
1 wk after
Cornflower
Centaurea cyanus
11 May
13 Jul
0 wk
12 May
3 Jul
0 wk
Statice
Limonium sinuatum
Greenhouse
4 – 18 Mar
31 Mar
8-10 wk
13 May
26 May
0 wk
Sweet William
Dianthus barbatus
16 – 30 Mar
6-8 wk
11 May
0 wk
21 May
1 wk after
Snow-on-the-mountain
Euphorbia marginata
Greenhouse
18 Mar – 1 Apr
14 Apr
6-8 wk
13 May
26 May
0 wk
12 Jun
5 wk after
Pinnate dahlia
Dahlia × pinnata
Fleece
21 Mar – 4 Apr
5 Apr
6-8 wk
16 May
17 May
1 wk after
Pinnate dahlia (tubers)
Dahlia × pinnata
Fleece
29 Mar – 26 Apr
19 Apr
4-8 wk
24 May
2 wk after
24 May
2 wk after
Foxglove
Digitalis purpurea
2 – 16 Mar
8-10 wk
11 May
0 wk
24 May
2 wk after
Busy lizzie
Impatiens walleriana
Greenhouse
26 Feb – 26 Mar
17 May
8-12 wk
21 May
12 Jul
1 wk after
Creeping zinnia
Sanvitalia procumbens
Greenhouse
18 Mar – 1 Apr
24 Apr
6-8 wk
13 May
5 Jun
0 wk
Hyacinth bean
Dolichos lablab
Season too short
19 Apr – 3 May
4-6 wk
31 May
3 wk after
Chinese lantern
Physalis alkekengi
7 – 21 Mar
9 Apr
8-10 wk
16 May
4 Jun
1 wk after
Love in a mist
Nigella damascena
11 May
28 Jun
0 wk
12 May
18 Jun
0 wk
Strawflower
Xerochrysum bracteatum
Greenhouse
18 Mar – 1 Apr
4 Apr
6-8 wk
13 May
16 May
0 wk
12 Jun
5 wk after
Purple-top vervain
Verbena bonariensis
21 Feb – 21 Mar
9 Apr
8-12 wk
16 May
4 Jun
1 wk after
Cardoon
Cynara cardunculus
Greenhouse
18 Feb – 18 Mar
19 Mar
8-12 wk
13 May
14 May
0 wk
Regal-foxtail
Ptilotus nobilis
Season too short
26 Feb – 26 Mar
8-12 wk
21 May
1 wk after
Globe amaranth
Gomphrena globosa
Season too short
26 Mar – 9 Apr
6-8 wk
21 May
1 wk after
Corn poppy
Papaver rhoeas
11 May
13 Jul
0 wk
12 May
3 Jul
0 wk
Snapdragon
Antirrhinum majus
16 Feb – 16 Mar
8 May
8-12 wk
11 May
3 Jul
0 wk
21 May
23 Jun
1 wk after
Flossflower
Ageratum houstonianum
Greenhouse
12 – 26 Mar
10 Apr
8-10 wk
21 May
5 Jun
1 wk after
Sweet pea
Lathyrus odoratus
16 Mar – 6 Apr
29 May
5-8 wk
11 May
3 Jul
0 wk
Stock
Matthiola incana
16 – 30 Mar
1 Jun
6-8 wk
11 May
13 Jul
0 wk
24 May
3 Jul
2 wk after
Wormwood
Artemisia absinthium
16 – 30 Mar
2 May
6-8 wk
11 May
13 Jun
0 wk
24 May
3 Jun
2 wk after
Mexican sunflower
Tithonia rotundifolia
Season too short
9 – 23 Apr
4-6 wk
21 May
1 wk after
Garden pansy
Viola × wittrockiana
2 – 16 Mar
18 May
8-10 wk
11 May
13 Jul
0 wk
21 May
3 Jul
1 wk after
Petunia
Petunia
Greenhouse
18 Feb – 18 Mar
31 Mar
8-12 wk
13 May
26 May
0 wk
Sweet Scabious
Scabiosa atropurpurea
21 Mar – 4 Apr
23 Apr
6-8 wk
16 May
4 Jun
1 wk after
23 Jun
6 wk after
Common zinnia
Zinnia elegans
Greenhouse
1 – 15 Apr
29 Apr
4-6 wk
13 May
27 May
0 wk
Common morning glory
Ipomoea purpurea
Season too short
16 – 30 Apr
3-5 wk
21 May
1 wk after
Garden cosmos
Cosmos bipinnatus
Fleece
9 – 23 Apr
19 Apr
4-6 wk
21 May
1 wk after
5 Jun
4 wk after
Scarlet milkweed
Asclepias curassavica
Season too short
8 Mar – 5 Apr
8-12 wk
31 May
3 wk after
Bee balm
Monarda didyma
16 Feb – 16 Mar
18 Apr
8-12 wk
11 May
13 Jun
0 wk
5 Jun
4 wk after
Yarrow
Achillea millefolium
16 – 30 Mar
2 Apr
6-8 wk
11 May
14 May
0 wk
24 May
2 wk after
Safflower
Carthamus tinctorius
11 May
13 Jun
0 wk
12 May
3 Jun
0 wk
Iceland poppy
Papaver nudicaule
Season too short
16 – 30 Mar
22 May
6-8 wk
11 May
3 Jul
0 wk
25 Apr
23 Jun
2 wk before
Bishop's flower
Ammi majus
30 Mar – 13 Apr
5 Jun
4-6 wk
11 May
3 Jul
0 wk
24 May
23 Jun
2 wk after
Drumsticks
Pycnosorus globosus
Season too short
26 Feb – 12 Mar
10-12 wk
21 May
1 wk after
Sunflower
Helianthus annuus
3 – 10 May
30 May
3-4 wk
31 May
20 Jun
3 wk after
5 Jun
10 Jun
4 wk after
China aster
Callistephus chinensis
5 – 19 Apr
19 May
6-8 wk
31 May
30 Jun
3 wk after
23 Jun
6 wk after
Annual phlox
Phlox drummondii
Greenhouse
16 – 30 Mar
24 Apr
6-8 wk
11 May
5 Jun
0 wk
24 May
26 May
2 wk after
Hollyhock
Alcea rosea
16 – 30 Mar
6-8 wk
11 May
0 wk
24 May
2 wk after
Alpine delphinium
Delphinium elatum
16 Feb – 16 Mar
18 Apr
8-12 wk
11 May
13 Jun
0 wk
5 Jun
4 wk after
African marigold
Tagetes erecta
Greenhouse
18 Mar – 1 Apr
24 Apr
6-8 wk
13 May
5 Jun
0 wk
Black-eyed Susan
Rudbeckia hirta
21 Mar – 4 Apr
9 May
6-8 wk
16 May
20 Jun
1 wk after
23 Jun
6 wk after
Wood sage
Salvia nemorosa
2 – 16 Mar
8 Apr
8-10 wk
11 May
3 Jun
0 wk
5 Jun
4 wk after
Black-eyed susan vine
Thunbergia alata
Season too short
12 Mar – 9 Apr
6-10 wk
21 May
1 wk after
California goldenpoppy
Eschscholzia californica
11 May
7 Jul
0 wk
12 May
27 Jun
0 wk
Painted tongue
Salpiglossis sinuata
22 Mar – 5 Apr
20 Apr
8-10 wk
31 May
15 Jun
3 wk after
Water forget-me-not
Myosotis scorpioides
16 – 30 Mar
2 May
6-8 wk
11 May
13 Jun
0 wk
24 May
3 Jun
2 wk after