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Method
Rel. frost
Last spring frost (0°C) 12 May Frost 9 of 10 years · 20 years of data
Frost-free season 130 days 12 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)
24 Mar – 7 Apr
11 Jun
5-7 wk
12 May
16 Jul
0 wk
13 May
6 Jul
0 wk
Broccoli
Brassica oleracea (Italica-gruppen)
31 Mar – 14 Apr
23 Jun
4-6 wk
12 May
21 Jul
0 wk
13 May
11 Jul
0 wk
Chili pepper
Capsicum annuum
Season too short
27 Feb – 27 Mar
8-12 wk
22 May
1 wk after
Curly Kale
Brassica oleracea (Curly Kale-gruppen)
24 Mar – 7 Apr
6 Jun
5-7 wk
12 May
11 Jul
0 wk
12 May
1 Jul
0 wk
Garden cucumber
Cucumis sativus
Season too short
24 Apr – 1 May
3-4 wk
22 May
1 wk after
Florence Fennel
Foeniculum vulgare
Fleece
27 Apr – 4 May
29 May
4-5 wk
1 Jun
26 Jun
3 wk after
6 Jun
16 Jun
4 wk after
Butter bean
Phaseolus lunatus
Season too short
25 May – 1 Jun
3-4 wk
22 Jun
6 wk after
Onion
Allium cepa (Cepa-gruppen)
17 Feb – 17 Mar
27 Mar
8-12 wk
12 May
22 May
0 wk
25 May
2 wk after
Onion (sets)
Allium cepa (Cepa-gruppen)
Fleece
9 May
11 Jun
0 wk
9 May
1 Jun
0 wk
Maize
Zea mays
Season too short
16 – 23 Apr
3-4 wk
14 May
0 wk
Swiss Chard
Beta vulgaris (Flavescens-gruppen)
19 – 26 Apr
25 Jun
3-4 wk
17 May
16 Jul
1 wk after
25 May
6 Jul
2 wk after
Carrot
Daucus carota subsp. sativus var. sativus
12 May
1 Jul
0 wk
12 May
21 Jun
0 wk
Palm Kale
Brassica oleracea (Palm Kale-gruppen)
24 Mar – 7 Apr
6 Jun
5-7 wk
12 May
11 Jul
0 wk
12 May
1 Jul
0 wk
Potato
Solanum tuberosum
Fleece
1 – 15 Apr
3 Jun
4-6 wk
13 May
1 Jul
0 wk
13 May
21 Jun
0 wk
Ornamental Kale
Brassica oleracea (Ornamental-gruppen)
24 Mar – 7 Apr
16 Jun
5-7 wk
12 May
21 Jul
0 wk
13 May
11 Jul
0 wk
Pumpkin
Cucurbita pepo
Season too short
24 Apr – 1 May
3-4 wk
22 May
1 wk after
Beetroot
Beta vulgaris (Conditiva-gruppen)
19 – 26 Apr
20 May
3-4 wk
17 May
10 Jun
1 wk after
25 May
31 May
2 wk after
Red Cabbage
Brassica oleracea (Red Cabbage-gruppen)
31 Mar – 14 Apr
18 Jun
4-6 wk
12 May
16 Jul
0 wk
Lettuce
Lactuca sativa
14 – 21 Apr
5 Jul
3-4 wk
12 May
26 Jul
0 wk
13 May
16 Jul
0 wk
Savoy Cabbage
Brassica oleracea (Savoy Cabbage-gruppen)
31 Mar – 14 Apr
18 Jun
4-6 wk
12 May
16 Jul
0 wk
Shallot (bulbs)
Allium cepa (Aggregatum-gruppen)
14 – 28 Apr
28 May
2-4 wk
12 May
11 Jun
0 wk
12 May
1 Jun
0 wk
Shallot (sets)
Allium cepa (Aggregatum-gruppen)
Fleece
9 May
11 Jun
0 wk
9 May
1 Jun
0 wk
Spinach
Spinacia oleracea
14 – 21 Apr
20 Jul
3-4 wk
12 May
10 Aug
0 wk
9 May
31 Jul
0 wk
Sweet potato
Ipomoea batatas
6 – 20 Jun
4-6 wk
18 Jul
10 wk after
Garden tomato
Solanum lycopersicum
Season too short
19 Mar – 2 Apr
6-8 wk
14 May
0 wk
Tomatillo
Physalis ixocarpa
Common Bean
Phaseolus vulgaris
Season too short
16 – 30 Apr
2-4 wk
14 May
0 wk
25 May
2 wk after
White Cabbage
Brassica oleracea (White Cabbage-gruppen)
31 Mar – 14 Apr
18 Jun
4-6 wk
12 May
16 Jul
0 wk
Garden pea
Pisum sativum
14 – 21 Apr
20 Jun
3-4 wk
12 May
11 Jul
0 wk
13 May
1 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
10 – 24 Apr
4-6 wk
22 May
1 wk after
Lemon balm
Melissa officinalis
3 – 17 Mar
16 May
8-10 wk
12 May
11 Jul
0 wk
6 Jun
1 Jul
4 wk after
Dill
Anethum graveolens
13 May
16 Jul
0 wk
Wild chives
Allium schoenoprasum
17 – 31 Mar
30 May
6-8 wk
12 May
11 Jul
0 wk
13 May
1 Jul
0 wk
Spearmint
Mentha spicata
17 Feb – 17 Mar
16 May
8-12 wk
12 May
11 Jul
0 wk
6 Jun
1 Jul
4 wk after
Coriander
Coriandrum sativum
12 May
5 Aug
0 wk
25 May
26 Jul
2 wk after
Garden sage
Salvia officinalis
8 – 22 Mar
1 May
8-10 wk
17 May
26 Jun
1 wk after
Common thyme
Thymus vulgaris
3 – 17 Mar
6 May
8-10 wk
12 May
1 Jul
0 wk
Oregano
Origanum vulgare
17 – 31 Mar
20 May
6-8 wk
12 May
1 Jul
0 wk
6 Jun
21 Jun
4 wk after
Parsley
Petroselinum crispum
17 – 31 Mar
20 May
6-8 wk
12 May
1 Jul
0 wk
13 May
21 Jun
0 wk
Rosemary
Salvia rosmarinus
Fleece
3 Feb – 3 Mar
1 Apr
10-14 wk
12 May
10 Jun
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
24 Apr – 1 May
3-4 wk
22 May
1 wk after
Cornflower
Centaurea cyanus
12 May
11 Jul
0 wk
13 May
1 Jul
0 wk
Statice
Limonium sinuatum
Season too short
5 – 19 Mar
1 Apr
8-10 wk
14 May
27 May
0 wk
Sweet William
Dianthus barbatus
17 – 31 Mar
6-8 wk
12 May
0 wk
22 May
1 wk after
Snow-on-the-mountain
Euphorbia marginata
Season too short
19 Mar – 2 Apr
15 Apr
6-8 wk
14 May
27 May
0 wk
13 Jun
5 wk after
Pinnate dahlia
Dahlia × pinnata
Greenhouse
17 – 31 Mar
2 May
6-8 wk
12 May
13 Jun
0 wk
Pinnate dahlia (tubers)
Dahlia × pinnata
Season too short
23 Mar – 20 Apr
16 May
4-8 wk
18 May
13 Jun
1 wk after
18 May
3 Jun
1 wk after
Foxglove
Digitalis purpurea
3 – 17 Mar
8-10 wk
12 May
0 wk
25 May
2 wk after
Busy lizzie
Impatiens walleriana
Greenhouse
27 Feb – 27 Mar
23 May
8-12 wk
22 May
18 Jul
1 wk after
Creeping zinnia
Sanvitalia procumbens
Greenhouse
19 Mar – 2 Apr
25 Apr
6-8 wk
14 May
6 Jun
0 wk
Hyacinth bean
Dolichos lablab
Season too short
20 Apr – 4 May
4-6 wk
1 Jun
3 wk after
Chinese lantern
Physalis alkekengi
8 – 22 Mar
11 Apr
8-10 wk
17 May
6 Jun
1 wk after
Love in a mist
Nigella damascena
12 May
26 Jun
0 wk
13 May
16 Jun
0 wk
Strawflower
Xerochrysum bracteatum
Season too short
19 Mar – 2 Apr
5 Apr
6-8 wk
14 May
17 May
0 wk
13 Jun
5 wk after
Purple-top vervain
Verbena bonariensis
22 Feb – 22 Mar
11 Apr
8-12 wk
17 May
6 Jun
1 wk after
Cardoon
Cynara cardunculus
Season too short
19 Feb – 19 Mar
17 Mar
8-12 wk
14 May
0 wk
Regal-foxtail
Ptilotus nobilis
Season too short
27 Feb – 27 Mar
8-12 wk
22 May
1 wk after
Globe amaranth
Gomphrena globosa
Season too short
27 Mar – 10 Apr
6-8 wk
22 May
1 wk after
Corn poppy
Papaver rhoeas
12 May
11 Jul
0 wk
13 May
1 Jul
0 wk
Snapdragon
Antirrhinum majus
17 Feb – 17 Mar
6 May
8-12 wk
12 May
1 Jul
0 wk
22 May
21 Jun
1 wk after
Flossflower
Ageratum houstonianum
Season too short
13 – 27 Mar
11 Apr
8-10 wk
22 May
6 Jun
1 wk after
Sweet pea
Lathyrus odoratus
17 Mar – 7 Apr
27 May
5-8 wk
12 May
1 Jul
0 wk
Stock
Matthiola incana
17 – 31 Mar
30 May
6-8 wk
12 May
11 Jul
0 wk
25 May
1 Jul
2 wk after
Wormwood
Artemisia absinthium
17 – 31 Mar
30 Apr
6-8 wk
12 May
11 Jun
0 wk
25 May
1 Jun
2 wk after
Mexican sunflower
Tithonia rotundifolia
Season too short
10 – 24 Apr
4-6 wk
22 May
1 wk after
Garden pansy
Viola × wittrockiana
3 – 17 Mar
16 May
8-10 wk
12 May
11 Jul
0 wk
22 May
1 Jul
1 wk after
Petunia
Petunia
Season too short
19 Feb – 19 Mar
1 Apr
8-12 wk
14 May
27 May
0 wk
Sweet Scabious
Scabiosa atropurpurea
22 Mar – 5 Apr
25 Apr
6-8 wk
17 May
6 Jun
1 wk after
24 Jun
6 wk after
Common zinnia
Zinnia elegans
Greenhouse
2 – 16 Apr
5 May
4-6 wk
14 May
2 Jun
0 wk
Common morning glory
Ipomoea purpurea
Season too short
17 Apr – 1 May
3-5 wk
22 May
1 wk after
Garden cosmos
Cosmos bipinnatus
Greenhouse
2 – 16 Apr
16 May
4-6 wk
14 May
13 Jun
0 wk
25 May
3 Jun
2 wk after
Scarlet milkweed
Asclepias curassavica
Season too short
9 Mar – 6 Apr
8-12 wk
1 Jun
3 wk after
Bee balm
Monarda didyma
17 Feb – 17 Mar
16 Apr
8-12 wk
12 May
11 Jun
0 wk
6 Jun
4 wk after
Yarrow
Achillea millefolium
17 – 31 Mar
31 Mar
6-8 wk
12 May
12 May
0 wk
25 May
2 wk after
Safflower
Carthamus tinctorius
12 May
11 Jun
0 wk
13 May
1 Jun
0 wk
Iceland poppy
Papaver nudicaule
Season too short
17 – 31 Mar
20 May
6-8 wk
12 May
1 Jul
0 wk
26 Apr
21 Jun
2 wk before
Bishop's flower
Ammi majus
31 Mar – 14 Apr
3 Jun
4-6 wk
12 May
1 Jul
0 wk
25 May
21 Jun
2 wk after
Drumsticks
Pycnosorus globosus
Season too short
27 Feb – 13 Mar
10-12 wk
22 May
1 wk after
Sunflower
Helianthus annuus
4 – 11 May
30 May
3-4 wk
1 Jun
20 Jun
3 wk after
6 Jun
10 Jun
4 wk after
China aster
Callistephus chinensis
6 – 20 Apr
19 May
6-8 wk
1 Jun
30 Jun
3 wk after
24 Jun
6 wk after
Annual phlox
Phlox drummondii
Greenhouse
17 – 31 Mar
25 Apr
6-8 wk
12 May
6 Jun
0 wk
25 May
27 May
2 wk after
Hollyhock
Alcea rosea
17 – 31 Mar
6-8 wk
12 May
0 wk
25 May
2 wk after
Alpine delphinium
Delphinium elatum
17 Feb – 17 Mar
16 Apr
8-12 wk
12 May
11 Jun
0 wk
6 Jun
4 wk after
African marigold
Tagetes erecta
Greenhouse
19 Mar – 2 Apr
25 Apr
6-8 wk
14 May
6 Jun
0 wk
Black-eyed Susan
Rudbeckia hirta
22 Mar – 5 Apr
9 May
6-8 wk
17 May
20 Jun
1 wk after
24 Jun
6 wk after
Wood sage
Salvia nemorosa
3 – 17 Mar
6 Apr
8-10 wk
12 May
1 Jun
0 wk
6 Jun
4 wk after
Black-eyed susan vine
Thunbergia alata
Season too short
13 Mar – 10 Apr
6-10 wk
22 May
1 wk after
California goldenpoppy
Eschscholzia californica
12 May
10 Jul
0 wk
13 May
30 Jun
0 wk
Painted tongue
Salpiglossis sinuata
Fleece
13 – 27 Mar
1 May
8-10 wk
22 May
26 Jun
1 wk after
Water forget-me-not
Myosotis scorpioides
17 – 31 Mar
30 Apr
6-8 wk
12 May
11 Jun
0 wk
25 May
1 Jun
2 wk after