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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 105 days 12 May – 25 Aug
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
Greenhouse
17 – 24 Apr
26 May
4-5 wk
22 May
23 Jun
1 wk after
25 May
13 Jun
2 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
4 Mar
8-12 wk
12 May
0 wk
25 May
2 wk after
Onion (sets)
Allium cepa (Cepa-gruppen)
13 May
19 May
0 wk
13 May
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
7 Jun
3-4 wk
17 May
28 Jun
1 wk after
25 May
18 Jun
2 wk after
Carrot
Daucus carota subsp. sativus var. sativus
12 May
23 Jun
0 wk
12 May
13 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
10 – 24 Apr
23 Apr
4-6 wk
22 May
1 wk after
22 May
1 wk after
Ornamental Kale
Brassica oleracea (Ornamental-gruppen)
24 Mar – 7 Apr
8 Jun
5-7 wk
12 May
13 Jul
0 wk
13 May
3 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
30 Apr
3-4 wk
17 May
21 May
1 wk after
25 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
27 Jun
3-4 wk
12 May
18 Jul
0 wk
13 May
8 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
6 May
2-4 wk
12 May
20 May
0 wk
12 May
0 wk
Shallot (sets)
Allium cepa (Aggregatum-gruppen)
13 May
19 May
0 wk
13 May
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
12 Jun
3-4 wk
12 May
3 Jul
0 wk
13 May
23 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
10 – 24 Apr
4-6 wk
22 May
1 wk after
Lemon balm
Melissa officinalis
3 – 17 Mar
8 May
8-10 wk
12 May
3 Jul
0 wk
6 Jun
23 Jun
4 wk after
Dill
Anethum graveolens
13 May
28 Jun
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
18 Jul
0 wk
25 May
8 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
8 Feb – 8 Mar
9 Mar
10-14 wk
17 May
18 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
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
8-10 wk
14 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
6-8 wk
14 May
0 wk
13 Jun
5 wk after
Pinnate dahlia
Dahlia × pinnata
Greenhouse
17 – 31 Mar
7 Apr
6-8 wk
12 May
19 May
0 wk
Pinnate dahlia (tubers)
Dahlia × pinnata
Greenhouse
23 Mar – 20 Apr
21 Apr
4-8 wk
18 May
19 May
1 wk after
18 May
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
2 Apr
8-12 wk
22 May
28 May
1 wk after
Creeping zinnia
Sanvitalia procumbens
Season too short
19 Mar – 2 Apr
20 Mar
6-8 wk
14 May
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
24 Mar
8-10 wk
17 May
19 May
1 wk after
Love in a mist
Nigella damascena
12 May
18 Jun
0 wk
13 May
8 Jun
0 wk
Strawflower
Xerochrysum bracteatum
Season too short
19 Mar – 2 Apr
6-8 wk
14 May
0 wk
13 Jun
5 wk after
Purple-top vervain
Verbena bonariensis
22 Feb – 22 Mar
24 Mar
8-12 wk
17 May
19 May
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
3 Jul
0 wk
13 May
23 Jun
0 wk
Snapdragon
Antirrhinum majus
17 Feb – 17 Mar
28 Apr
8-12 wk
12 May
23 Jun
0 wk
22 May
13 Jun
1 wk after
Flossflower
Ageratum houstonianum
Season too short
13 – 27 Mar
8-10 wk
22 May
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
22 May
6-8 wk
12 May
3 Jul
0 wk
25 May
23 Jun
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
24 Feb
8-12 wk
14 May
0 wk
Sweet Scabious
Scabiosa atropurpurea
22 Mar – 5 Apr
7 Apr
6-8 wk
17 May
19 May
1 wk after
24 Jun
6 wk after
Common zinnia
Zinnia elegans
Season too short
2 – 16 Apr
4-6 wk
14 May
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
21 Apr
4-6 wk
14 May
19 May
0 wk
25 May
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
8 Apr
8-12 wk
12 May
3 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
26 May
4-6 wk
12 May
23 Jun
0 wk
25 May
13 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
Fleece
24 Apr – 1 May
31 May
3-4 wk
22 May
21 Jun
1 wk after
25 May
11 Jun
2 wk after
China aster
Callistephus chinensis
6 – 20 Apr
6 May
6-8 wk
1 Jun
17 Jun
3 wk after
24 Jun
6 wk after
Annual phlox
Phlox drummondii
Season too short
17 – 31 Mar
20 Mar
6-8 wk
12 May
0 wk
25 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
8 Apr
8-12 wk
12 May
3 Jun
0 wk
6 Jun
4 wk after
African marigold
Tagetes erecta
Season too short
19 Mar – 2 Apr
20 Mar
6-8 wk
14 May
0 wk
Black-eyed Susan
Rudbeckia hirta
22 Mar – 5 Apr
26 Apr
6-8 wk
17 May
7 Jun
1 wk after
24 Jun
6 wk after
Wood sage
Salvia nemorosa
3 – 17 Mar
29 Mar
8-10 wk
12 May
24 May
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
1 Jul
0 wk
13 May
21 Jun
0 wk
Painted tongue
Salpiglossis sinuata
Fleece
13 – 27 Mar
13 Apr
8-10 wk
22 May
8 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