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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 125 days 10 May – 12 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
12 Jun
5-7 wk
10 May
17 Jul
0 wk
11 May
7 Jul
0 wk
Broccoli
Brassica oleracea (Italica-gruppen)
29 Mar – 12 Apr
24 Jun
4-6 wk
10 May
22 Jul
0 wk
11 May
12 Jul
0 wk
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
7 Jun
5-7 wk
10 May
12 Jul
0 wk
10 May
2 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
15 May
4-5 wk
15 Jun
5 wk after
22 Jun
6 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
15 Mar
8-12 wk
10 May
10 May
0 wk
23 May
2 wk after
Onion (sets)
Allium cepa (Cepa-gruppen)
11 May
30 May
0 wk
11 May
20 May
0 wk
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
20 Jun
3-4 wk
15 May
11 Jul
1 wk after
23 May
1 Jul
2 wk after
Carrot
Daucus carota subsp. sativus var. sativus
10 May
2 Jul
0 wk
10 May
22 Jun
0 wk
Palm Kale
Brassica oleracea (Palm Kale-gruppen)
22 Mar – 5 Apr
7 Jun
5-7 wk
10 May
12 Jul
0 wk
10 May
2 Jul
0 wk
Potato
Solanum tuberosum
8 – 22 Apr
12 May
4-6 wk
20 May
9 Jun
1 wk after
20 May
30 May
1 wk after
Ornamental Kale
Brassica oleracea (Ornamental-gruppen)
22 Mar – 5 Apr
17 Jun
5-7 wk
10 May
22 Jul
0 wk
11 May
12 Jul
0 wk
Pumpkin
Cucurbita pepo
Greenhouse
22 – 29 Apr
12 May
3-4 wk
20 May
2 Jun
1 wk after
Beetroot
Beta vulgaris (Conditiva-gruppen)
17 – 24 Apr
18 May
3-4 wk
15 May
8 Jun
1 wk after
23 May
29 May
2 wk after
Red Cabbage
Brassica oleracea (Red Cabbage-gruppen)
29 Mar – 12 Apr
19 Jun
4-6 wk
10 May
17 Jul
0 wk
Lettuce
Lactuca sativa
12 – 19 Apr
6 Jul
3-4 wk
10 May
27 Jul
0 wk
11 May
17 Jul
0 wk
Savoy Cabbage
Brassica oleracea (Savoy Cabbage-gruppen)
29 Mar – 12 Apr
19 Jun
4-6 wk
10 May
17 Jul
0 wk
Shallot (bulbs)
Allium cepa (Aggregatum-gruppen)
12 – 26 Apr
18 May
2-4 wk
10 May
1 Jun
0 wk
10 May
22 May
0 wk
Shallot (sets)
Allium cepa (Aggregatum-gruppen)
11 May
30 May
0 wk
11 May
20 May
0 wk
Spinach
Spinacia oleracea
12 – 19 Apr
21 Jul
3-4 wk
10 May
11 Aug
0 wk
7 May
1 Aug
0 wk
Sweet potato
Ipomoea batatas
4 – 18 Jun
4-6 wk
16 Jul
10 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
Greenhouse
14 – 28 Apr
14 May
2-4 wk
12 May
28 May
0 wk
23 May
2 wk after
White Cabbage
Brassica oleracea (White Cabbage-gruppen)
29 Mar – 12 Apr
19 Jun
4-6 wk
10 May
17 Jul
0 wk
Garden pea
Pisum sativum
12 – 19 Apr
21 Jun
3-4 wk
10 May
12 Jul
0 wk
11 May
2 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
8 – 22 Apr
20 Apr
4-6 wk
20 May
1 wk after
Lemon balm
Melissa officinalis
1 – 15 Mar
17 May
8-10 wk
10 May
12 Jul
0 wk
4 Jun
2 Jul
4 wk after
Dill
Anethum graveolens
11 May
11 Jul
0 wk
Wild chives
Allium schoenoprasum
15 – 29 Mar
31 May
6-8 wk
10 May
12 Jul
0 wk
11 May
2 Jul
0 wk
Spearmint
Mentha spicata
15 Feb – 15 Mar
17 May
8-12 wk
10 May
12 Jul
0 wk
4 Jun
2 Jul
4 wk after
Coriander
Coriandrum sativum
10 May
31 Jul
0 wk
23 May
21 Jul
2 wk after
Garden sage
Salvia officinalis
6 – 20 Mar
2 May
8-10 wk
15 May
27 Jun
1 wk after
Common thyme
Thymus vulgaris
1 – 15 Mar
7 May
8-10 wk
10 May
2 Jul
0 wk
Oregano
Origanum vulgare
15 – 29 Mar
21 May
6-8 wk
10 May
2 Jul
0 wk
4 Jun
22 Jun
4 wk after
Parsley
Petroselinum crispum
15 – 29 Mar
21 May
6-8 wk
10 May
2 Jul
0 wk
11 May
22 Jun
0 wk
Rosemary
Salvia rosmarinus
6 Feb – 6 Mar
18 Mar
10-14 wk
15 May
27 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
22 – 29 Apr
27 Apr
3-4 wk
20 May
1 wk after
Cornflower
Centaurea cyanus
10 May
12 Jul
0 wk
11 May
2 Jul
0 wk
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
20 May
1 wk after
Snow-on-the-mountain
Euphorbia marginata
Greenhouse
17 – 31 Mar
13 Apr
6-8 wk
12 May
25 May
0 wk
11 Jun
5 wk after
Pinnate dahlia
Dahlia × pinnata
Fleece
20 Mar – 3 Apr
8 Apr
6-8 wk
15 May
20 May
1 wk after
Pinnate dahlia (tubers)
Dahlia × pinnata
Fleece
28 Mar – 25 Apr
22 Apr
4-8 wk
23 May
2 wk after
23 May
2 wk after
Foxglove
Digitalis purpurea
1 – 15 Mar
8-10 wk
10 May
0 wk
23 May
2 wk after
Busy lizzie
Impatiens walleriana
Fleece
7 Mar – 4 Apr
8 May
8-12 wk
30 May
3 Jul
3 wk after
Creeping zinnia
Sanvitalia procumbens
Fleece
25 Mar – 8 Apr
11 Apr
6-8 wk
20 May
23 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
6 Apr
8-10 wk
15 May
1 Jun
1 wk after
Love in a mist
Nigella damascena
10 May
27 Jun
0 wk
11 May
17 Jun
0 wk
Strawflower
Xerochrysum bracteatum
Greenhouse
17 – 31 Mar
3 Apr
6-8 wk
12 May
15 May
0 wk
11 Jun
5 wk after
Purple-top vervain
Verbena bonariensis
20 Feb – 20 Mar
6 Apr
8-12 wk
15 May
1 Jun
1 wk after
Cardoon
Cynara cardunculus
Greenhouse
17 Feb – 17 Mar
18 Mar
8-12 wk
12 May
13 May
0 wk
Regal-foxtail
Ptilotus nobilis
Season too short
25 Feb – 25 Mar
13 Mar
8-12 wk
20 May
1 wk after
Globe amaranth
Gomphrena globosa
Season too short
25 Mar – 8 Apr
27 Mar
6-8 wk
20 May
1 wk after
Corn poppy
Papaver rhoeas
10 May
12 Jul
0 wk
11 May
2 Jul
0 wk
Snapdragon
Antirrhinum majus
15 Feb – 15 Mar
7 May
8-12 wk
10 May
2 Jul
0 wk
20 May
22 Jun
1 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
28 May
5-8 wk
10 May
2 Jul
0 wk
Stock
Matthiola incana
15 – 29 Mar
31 May
6-8 wk
10 May
12 Jul
0 wk
23 May
2 Jul
2 wk after
Wormwood
Artemisia absinthium
15 – 29 Mar
1 May
6-8 wk
10 May
12 Jun
0 wk
23 May
2 Jun
2 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
17 May
8-10 wk
10 May
12 Jul
0 wk
20 May
2 Jul
1 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
20 Apr
6-8 wk
15 May
1 Jun
1 wk after
22 Jun
6 wk after
Common zinnia
Zinnia elegans
Greenhouse
31 Mar – 14 Apr
2 May
4-6 wk
12 May
30 May
0 wk
Common morning glory
Ipomoea purpurea
Season too short
15 – 29 Apr
27 Apr
3-5 wk
20 May
1 wk after
Garden cosmos
Cosmos bipinnatus
Fleece
8 – 22 Apr
22 Apr
4-6 wk
20 May
20 May
1 wk after
4 Jun
4 wk after
Scarlet milkweed
Asclepias curassavica
Greenhouse
7 Mar – 4 Apr
12 Apr
8-12 wk
30 May
7 Jun
3 wk after
Bee balm
Monarda didyma
15 Feb – 15 Mar
17 Apr
8-12 wk
10 May
12 Jun
0 wk
4 Jun
4 wk after
Yarrow
Achillea millefolium
15 – 29 Mar
1 Apr
6-8 wk
10 May
13 May
0 wk
23 May
2 wk after
Safflower
Carthamus tinctorius
10 May
12 Jun
0 wk
11 May
2 Jun
0 wk
Iceland poppy
Papaver nudicaule
Season too short
15 – 29 Mar
21 May
6-8 wk
10 May
2 Jul
0 wk
24 Apr
22 Jun
2 wk before
Bishop's flower
Ammi majus
29 Mar – 12 Apr
4 Jun
4-6 wk
10 May
2 Jul
0 wk
23 May
22 Jun
2 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
26 May
3-4 wk
30 May
16 Jun
3 wk after
4 Jun
6 Jun
4 wk after
China aster
Callistephus chinensis
4 – 18 Apr
15 May
6-8 wk
30 May
26 Jun
3 wk after
22 Jun
6 wk after
Annual phlox
Phlox drummondii
Fleece
17 – 31 Mar
11 Apr
6-8 wk
12 May
23 May
0 wk
4 Jun
4 wk after
Hollyhock
Alcea rosea
15 – 29 Mar
6-8 wk
10 May
0 wk
23 May
2 wk after
Alpine delphinium
Delphinium elatum
15 Feb – 15 Mar
17 Apr
8-12 wk
10 May
12 Jun
0 wk
4 Jun
4 wk after
African marigold
Tagetes erecta
Fleece
25 Mar – 8 Apr
11 Apr
6-8 wk
20 May
23 May
1 wk after
Black-eyed Susan
Rudbeckia hirta
20 Mar – 3 Apr
5 May
6-8 wk
15 May
16 Jun
1 wk after
22 Jun
6 wk after
Wood sage
Salvia nemorosa
1 – 15 Mar
7 Apr
8-10 wk
10 May
2 Jun
0 wk
4 Jun
4 wk after
Black-eyed susan vine
Thunbergia alata
Season too short
11 Mar – 8 Apr
6 Apr
6-10 wk
20 May
1 wk after
California goldenpoppy
Eschscholzia californica
10 May
4 Jul
0 wk
11 May
24 Jun
0 wk
Painted tongue
Salpiglossis sinuata
21 Mar – 4 Apr
17 Apr
8-10 wk
30 May
12 Jun
3 wk after
Water forget-me-not
Myosotis scorpioides
15 – 29 Mar
1 May
6-8 wk
10 May
12 Jun
0 wk
23 May
2 Jun
2 wk after