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Method
Rel. frost
Last spring frost (0°C) 5 May Frost 9 of 10 years · 20 years of data
Frost-free season 129 days 5 May – 11 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)
17 – 31 Mar
8 Jun
5-7 wk
5 May
13 Jul
0 wk
6 May
3 Jul
0 wk
Broccoli
Brassica oleracea (Italica-gruppen)
24 Mar – 7 Apr
20 Jun
4-6 wk
5 May
18 Jul
0 wk
6 May
8 Jul
0 wk
Chili pepper
Capsicum annuum
Season too short
20 Feb – 20 Mar
8-12 wk
15 May
1 wk after
Curly Kale
Brassica oleracea (Curly Kale-gruppen)
17 – 31 Mar
3 Jun
5-7 wk
5 May
8 Jul
0 wk
5 May
28 Jun
0 wk
Garden cucumber
Cucumis sativus
Season too short
17 – 24 Apr
3-4 wk
15 May
1 wk after
Florence Fennel
Foeniculum vulgare
Fleece
20 – 27 Apr
31 May
4-5 wk
25 May
28 Jun
3 wk after
30 May
18 Jun
4 wk after
Butter bean
Phaseolus lunatus
Season too short
18 – 25 May
3-4 wk
15 Jun
6 wk after
Onion
Allium cepa (Cepa-gruppen)
Fleece
10 Feb – 10 Mar
7 Mar
8-12 wk
5 May
0 wk
11 May
1 wk after
Onion (sets)
Allium cepa (Cepa-gruppen)
Fleece
2 May
22 May
0 wk
2 May
12 May
0 wk
Maize
Zea mays
Season too short
9 – 16 Apr
3-4 wk
7 May
0 wk
Swiss Chard
Beta vulgaris (Flavescens-gruppen)
12 – 19 Apr
27 Jun
3-4 wk
10 May
18 Jul
1 wk after
18 May
8 Jul
2 wk after
Carrot
Daucus carota subsp. sativus var. sativus
5 May
28 Jun
0 wk
5 May
18 Jun
0 wk
Palm Kale
Brassica oleracea (Palm Kale-gruppen)
17 – 31 Mar
3 Jun
5-7 wk
5 May
8 Jul
0 wk
5 May
28 Jun
0 wk
Potato
Solanum tuberosum
Fleece
25 Mar – 8 Apr
30 Apr
4-6 wk
6 May
28 May
0 wk
6 May
18 May
0 wk
Ornamental Kale
Brassica oleracea (Ornamental-gruppen)
17 – 31 Mar
13 Jun
5-7 wk
5 May
18 Jul
0 wk
6 May
8 Jul
0 wk
Pumpkin
Cucurbita pepo
Season too short
17 – 24 Apr
30 Apr
3-4 wk
15 May
21 May
1 wk after
Beetroot
Beta vulgaris (Conditiva-gruppen)
Fleece
7 – 14 Apr
25 Apr
3-4 wk
5 May
16 May
0 wk
11 May
1 wk after
Red Cabbage
Brassica oleracea (Red Cabbage-gruppen)
24 Mar – 7 Apr
15 Jun
4-6 wk
5 May
13 Jul
0 wk
Lettuce
Lactuca sativa
7 – 14 Apr
2 Jul
3-4 wk
5 May
23 Jul
0 wk
6 May
13 Jul
0 wk
Savoy Cabbage
Brassica oleracea (Savoy Cabbage-gruppen)
24 Mar – 7 Apr
15 Jun
4-6 wk
5 May
13 Jul
0 wk
Shallot (bulbs)
Allium cepa (Aggregatum-gruppen)
7 – 21 Apr
30 Apr
2-4 wk
5 May
14 May
0 wk
5 May
0 wk
Shallot (sets)
Allium cepa (Aggregatum-gruppen)
Fleece
2 May
22 May
0 wk
2 May
12 May
0 wk
Spinach
Spinacia oleracea
7 – 14 Apr
17 Jul
3-4 wk
5 May
7 Aug
0 wk
2 May
28 Jul
0 wk
Sweet potato
Ipomoea batatas
30 May – 13 Jun
4-6 wk
11 Jul
10 wk after
Garden tomato
Solanum lycopersicum
Season too short
12 – 26 Mar
6-8 wk
7 May
0 wk
Tomatillo
Physalis ixocarpa
Common Bean
Phaseolus vulgaris
Greenhouse
9 – 23 Apr
2 May
2-4 wk
7 May
16 May
0 wk
18 May
2 wk after
White Cabbage
Brassica oleracea (White Cabbage-gruppen)
24 Mar – 7 Apr
15 Jun
4-6 wk
5 May
13 Jul
0 wk
Garden pea
Pisum sativum
7 – 14 Apr
17 Jun
3-4 wk
5 May
8 Jul
0 wk
6 May
28 Jun
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
3 – 17 Apr
8 Apr
4-6 wk
15 May
1 wk after
Lemon balm
Melissa officinalis
24 Feb – 10 Mar
13 May
8-10 wk
5 May
8 Jul
0 wk
30 May
28 Jun
4 wk after
Dill
Anethum graveolens
6 May
18 Jul
0 wk
Wild chives
Allium schoenoprasum
10 – 24 Mar
27 May
6-8 wk
5 May
8 Jul
0 wk
6 May
28 Jun
0 wk
Spearmint
Mentha spicata
10 Feb – 10 Mar
13 May
8-12 wk
5 May
8 Jul
0 wk
30 May
28 Jun
4 wk after
Coriander
Coriandrum sativum
5 May
7 Aug
0 wk
18 May
28 Jul
2 wk after
Garden sage
Salvia officinalis
1 – 15 Mar
28 Apr
8-10 wk
10 May
23 Jun
1 wk after
Common thyme
Thymus vulgaris
24 Feb – 10 Mar
3 May
8-10 wk
5 May
28 Jun
0 wk
Oregano
Origanum vulgare
10 – 24 Mar
17 May
6-8 wk
5 May
28 Jun
0 wk
30 May
18 Jun
4 wk after
Parsley
Petroselinum crispum
10 – 24 Mar
17 May
6-8 wk
5 May
28 Jun
0 wk
6 May
18 Jun
0 wk
Rosemary
Salvia rosmarinus
1 Feb – 1 Mar
30 Mar
10-14 wk
10 May
8 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
17 – 24 Apr
3-4 wk
15 May
1 wk after
Cornflower
Centaurea cyanus
5 May
8 Jul
0 wk
6 May
28 Jun
0 wk
Statice
Limonium sinuatum
Greenhouse
26 Feb – 12 Mar
8 Apr
8-10 wk
7 May
3 Jun
0 wk
Sweet William
Dianthus barbatus
10 – 24 Mar
6-8 wk
5 May
0 wk
15 May
1 wk after
Snow-on-the-mountain
Euphorbia marginata
Greenhouse
12 – 26 Mar
22 Apr
6-8 wk
7 May
3 Jun
0 wk
6 Jun
5 wk after
Pinnate dahlia
Dahlia × pinnata
Fleece
15 – 29 Mar
10 Apr
6-8 wk
10 May
22 May
1 wk after
Pinnate dahlia (tubers)
Dahlia × pinnata
Greenhouse
16 Mar – 13 Apr
8 May
4-8 wk
11 May
5 Jun
1 wk after
11 May
26 May
1 wk after
Foxglove
Digitalis purpurea
24 Feb – 10 Mar
8-10 wk
5 May
0 wk
18 May
2 wk after
Busy lizzie
Impatiens walleriana
Fleece
2 – 30 Mar
26 Apr
8-12 wk
25 May
21 Jun
3 wk after
Creeping zinnia
Sanvitalia procumbens
Greenhouse
12 – 26 Mar
2 May
6-8 wk
7 May
13 Jun
0 wk
Hyacinth bean
Dolichos lablab
Season too short
13 – 27 Apr
4-6 wk
25 May
3 wk after
Chinese lantern
Physalis alkekengi
1 – 15 Mar
13 Apr
8-10 wk
10 May
8 Jun
1 wk after
Love in a mist
Nigella damascena
5 May
23 Jun
0 wk
6 May
13 Jun
0 wk
Strawflower
Xerochrysum bracteatum
Greenhouse
12 – 26 Mar
12 Apr
6-8 wk
7 May
24 May
0 wk
6 Jun
5 wk after
Purple-top vervain
Verbena bonariensis
15 Feb – 15 Mar
13 Apr
8-12 wk
10 May
8 Jun
1 wk after
Cardoon
Cynara cardunculus
Greenhouse
12 Feb – 12 Mar
14 Mar
8-12 wk
7 May
9 May
0 wk
Regal-foxtail
Ptilotus nobilis
Season too short
20 Feb – 20 Mar
1 Mar
8-12 wk
15 May
1 wk after
Globe amaranth
Gomphrena globosa
Season too short
20 Mar – 3 Apr
6-8 wk
15 May
1 wk after
Corn poppy
Papaver rhoeas
5 May
8 Jul
0 wk
6 May
28 Jun
0 wk
Snapdragon
Antirrhinum majus
10 Feb – 10 Mar
3 May
8-12 wk
5 May
28 Jun
0 wk
15 May
18 Jun
1 wk after
Flossflower
Ageratum houstonianum
Greenhouse
6 – 20 Mar
18 Apr
8-10 wk
15 May
13 Jun
1 wk after
Sweet pea
Lathyrus odoratus
10 – 31 Mar
24 May
5-8 wk
5 May
28 Jun
0 wk
Stock
Matthiola incana
10 – 24 Mar
27 May
6-8 wk
5 May
8 Jul
0 wk
18 May
28 Jun
2 wk after
Wormwood
Artemisia absinthium
10 – 24 Mar
27 Apr
6-8 wk
5 May
8 Jun
0 wk
18 May
29 May
2 wk after
Mexican sunflower
Tithonia rotundifolia
Season too short
3 – 17 Apr
4-6 wk
15 May
1 wk after
Garden pansy
Viola × wittrockiana
24 Feb – 10 Mar
13 May
8-10 wk
5 May
8 Jul
0 wk
15 May
28 Jun
1 wk after
Petunia
Petunia
Greenhouse
12 Feb – 12 Mar
8 Apr
8-12 wk
7 May
3 Jun
0 wk
Sweet Scabious
Scabiosa atropurpurea
15 – 29 Mar
27 Apr
6-8 wk
10 May
8 Jun
1 wk after
17 Jun
6 wk after
Common zinnia
Zinnia elegans
Greenhouse
26 Mar – 9 Apr
4 May
4-6 wk
7 May
1 Jun
0 wk
Common morning glory
Ipomoea purpurea
Season too short
10 – 24 Apr
15 Apr
3-5 wk
15 May
1 wk after
Garden cosmos
Cosmos bipinnatus
Greenhouse
26 Mar – 9 Apr
8 May
4-6 wk
7 May
5 Jun
0 wk
18 May
26 May
2 wk after
Scarlet milkweed
Asclepias curassavica
Season too short
2 – 30 Mar
31 Mar
8-12 wk
25 May
26 May
3 wk after
Bee balm
Monarda didyma
10 Feb – 10 Mar
13 Apr
8-12 wk
5 May
8 Jun
0 wk
30 May
4 wk after
Yarrow
Achillea millefolium
10 – 24 Mar
28 Mar
6-8 wk
5 May
9 May
0 wk
18 May
2 wk after
Safflower
Carthamus tinctorius
5 May
8 Jun
0 wk
6 May
29 May
0 wk
Iceland poppy
Papaver nudicaule
Season too short
10 – 24 Mar
17 May
6-8 wk
5 May
28 Jun
0 wk
19 Apr
18 Jun
2 wk before
Bishop's flower
Ammi majus
24 Mar – 7 Apr
31 May
4-6 wk
5 May
28 Jun
0 wk
18 May
18 Jun
2 wk after
Drumsticks
Pycnosorus globosus
Season too short
20 Feb – 6 Mar
21 Feb
10-12 wk
15 May
1 wk after
Sunflower
Helianthus annuus
27 Apr – 4 May
7 Jun
3-4 wk
25 May
28 Jun
3 wk after
30 May
18 Jun
4 wk after
China aster
Callistephus chinensis
30 Mar – 13 Apr
27 May
6-8 wk
25 May
8 Jul
3 wk after
17 Jun
28 Jun
6 wk after
Annual phlox
Phlox drummondii
Fleece
12 – 26 Mar
11 Apr
6-8 wk
7 May
23 May
0 wk
30 May
4 wk after
Hollyhock
Alcea rosea
10 – 24 Mar
6-8 wk
5 May
0 wk
18 May
2 wk after
Alpine delphinium
Delphinium elatum
10 Feb – 10 Mar
13 Apr
8-12 wk
5 May
8 Jun
0 wk
30 May
4 wk after
African marigold
Tagetes erecta
Greenhouse
12 – 26 Mar
2 May
6-8 wk
7 May
13 Jun
0 wk
Black-eyed Susan
Rudbeckia hirta
15 – 29 Mar
17 May
6-8 wk
10 May
28 Jun
1 wk after
17 Jun
18 Jun
6 wk after
Wood sage
Salvia nemorosa
24 Feb – 10 Mar
3 Apr
8-10 wk
5 May
29 May
0 wk
30 May
4 wk after
Black-eyed susan vine
Thunbergia alata
Season too short
6 Mar – 3 Apr
25 Mar
6-10 wk
15 May
1 wk after
California goldenpoppy
Eschscholzia californica
5 May
8 Jul
0 wk
6 May
28 Jun
0 wk
Painted tongue
Salpiglossis sinuata
16 – 30 Mar
2 May
8-10 wk
25 May
27 Jun
3 wk after
Water forget-me-not
Myosotis scorpioides
10 – 24 Mar
27 Apr
6-8 wk
5 May
8 Jun
0 wk
18 May
29 May
2 wk after