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Method
Rel. frost
Last spring frost (0°C) 16 May Frost 9 of 10 years · 20 years of data
Frost-free season 103 days 16 May – 27 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)
28 Mar – 11 Apr
12 Jun
5-7 wk
16 May
17 Jul
0 wk
17 May
7 Jul
0 wk
Broccoli
Brassica oleracea (Italica-gruppen)
4 – 18 Apr
24 Jun
4-6 wk
16 May
22 Jul
0 wk
17 May
12 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)
28 Mar – 11 Apr
7 Jun
5-7 wk
16 May
12 Jul
0 wk
16 May
2 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
1 Jun
4-5 wk
22 May
29 Jun
1 wk after
29 May
19 Jun
2 wk after
Butter bean
Phaseolus lunatus
Season too short
27 May – 3 Jun
3-4 wk
24 Jun
6 wk after
Onion
Allium cepa (Cepa-gruppen)
Fleece
21 Feb – 21 Mar
8 Mar
8-12 wk
16 May
0 wk
22 May
1 wk after
Onion (sets)
Allium cepa (Cepa-gruppen)
Fleece
13 May
23 May
0 wk
13 May
13 May
0 wk
Maize
Zea mays
Season too short
18 – 25 Apr
3-4 wk
16 May
0 wk
Swiss Chard
Beta vulgaris (Flavescens-gruppen)
20 – 27 Apr
22 Jun
3-4 wk
18 May
13 Jul
0 wk
29 May
3 Jul
2 wk after
Carrot
Daucus carota subsp. sativus var. sativus
16 May
29 Jun
0 wk
16 May
19 Jun
0 wk
Palm Kale
Brassica oleracea (Palm Kale-gruppen)
28 Mar – 11 Apr
7 Jun
5-7 wk
16 May
12 Jul
0 wk
16 May
2 Jul
0 wk
Potato
Solanum tuberosum
Fleece
5 – 19 Apr
27 Apr
4-6 wk
17 May
25 May
0 wk
17 May
0 wk
Ornamental Kale
Brassica oleracea (Ornamental-gruppen)
28 Mar – 11 Apr
14 Jun
5-7 wk
16 May
19 Jul
0 wk
17 May
9 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)
Fleece
18 – 25 Apr
3 May
3-4 wk
16 May
24 May
0 wk
22 May
1 wk after
Red Cabbage
Brassica oleracea (Red Cabbage-gruppen)
4 – 18 Apr
19 Jun
4-6 wk
16 May
17 Jul
0 wk
Lettuce
Lactuca sativa
18 – 25 Apr
3 Jul
3-4 wk
16 May
24 Jul
0 wk
17 May
14 Jul
0 wk
Savoy Cabbage
Brassica oleracea (Savoy Cabbage-gruppen)
4 – 18 Apr
19 Jun
4-6 wk
16 May
17 Jul
0 wk
Shallot (bulbs)
Allium cepa (Aggregatum-gruppen)
Fleece
12 – 26 Apr
10 May
2-4 wk
10 May
24 May
1 wk before
10 May
14 May
1 wk before
Shallot (sets)
Allium cepa (Aggregatum-gruppen)
Fleece
13 May
23 May
0 wk
13 May
13 May
0 wk
Spinach
Spinacia oleracea
18 – 25 Apr
21 Jul
3-4 wk
16 May
11 Aug
0 wk
13 May
1 Aug
0 wk
Sweet potato
Ipomoea batatas
10 – 24 Jun
4-6 wk
22 Jul
10 wk after
Garden tomato
Solanum lycopersicum
Season too short
21 Mar – 4 Apr
6-8 wk
16 May
0 wk
Tomatillo
Physalis ixocarpa
Common Bean
Phaseolus vulgaris
Season too short
18 Apr – 2 May
2-4 wk
16 May
0 wk
29 May
2 wk after
White Cabbage
Brassica oleracea (White Cabbage-gruppen)
4 – 18 Apr
19 Jun
4-6 wk
16 May
17 Jul
0 wk
Garden pea
Pisum sativum
18 – 25 Apr
18 Jun
3-4 wk
16 May
9 Jul
0 wk
17 May
29 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
7 – 21 Mar
14 May
8-10 wk
16 May
9 Jul
0 wk
10 Jun
29 Jun
4 wk after
Dill
Anethum graveolens
17 May
13 Jul
0 wk
Wild chives
Allium schoenoprasum
21 Mar – 4 Apr
31 May
6-8 wk
16 May
12 Jul
0 wk
17 May
2 Jul
0 wk
Spearmint
Mentha spicata
21 Feb – 21 Mar
17 May
8-12 wk
16 May
12 Jul
0 wk
10 Jun
2 Jul
4 wk after
Coriander
Coriandrum sativum
16 May
2 Aug
0 wk
29 May
23 Jul
2 wk after
Garden sage
Salvia officinalis
9 – 23 Mar
2 May
8-10 wk
18 May
27 Jun
0 wk
Common thyme
Thymus vulgaris
7 – 21 Mar
7 May
8-10 wk
16 May
2 Jul
0 wk
Oregano
Origanum vulgare
21 Mar – 4 Apr
21 May
6-8 wk
16 May
2 Jul
0 wk
10 Jun
22 Jun
4 wk after
Parsley
Petroselinum crispum
21 Mar – 4 Apr
21 May
6-8 wk
16 May
2 Jul
0 wk
17 May
22 Jun
0 wk
Rosemary
Salvia rosmarinus
9 Feb – 9 Mar
16 Mar
10-14 wk
18 May
25 May
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
16 May
12 Jul
0 wk
17 May
2 Jul
0 wk
Statice
Limonium sinuatum
Season too short
7 – 21 Mar
8-10 wk
16 May
0 wk
Sweet William
Dianthus barbatus
21 Mar – 4 Apr
6-8 wk
16 May
0 wk
26 May
1 wk after
Snow-on-the-mountain
Euphorbia marginata
Season too short
21 Mar – 4 Apr
6-8 wk
16 May
0 wk
17 Jun
5 wk after
Pinnate dahlia
Dahlia × pinnata
Greenhouse
21 Mar – 4 Apr
9 Apr
6-8 wk
16 May
21 May
0 wk
Pinnate dahlia (tubers)
Dahlia × pinnata
Greenhouse
27 Mar – 24 Apr
23 Apr
4-8 wk
22 May
1 wk after
22 May
1 wk after
Foxglove
Digitalis purpurea
7 – 21 Mar
8-10 wk
16 May
0 wk
29 May
2 wk after
Busy lizzie
Impatiens walleriana
Season too short
27 Feb – 27 Mar
28 Mar
8-12 wk
22 May
23 May
1 wk after
Creeping zinnia
Sanvitalia procumbens
Season too short
21 Mar – 4 Apr
6-8 wk
16 May
0 wk
Hyacinth bean
Dolichos lablab
Season too short
17 Apr – 1 May
4-6 wk
29 May
2 wk after
Chinese lantern
Physalis alkekengi
9 – 23 Mar
8 Apr
8-10 wk
18 May
3 Jun
0 wk
Love in a mist
Nigella damascena
16 May
24 Jun
0 wk
17 May
14 Jun
0 wk
Strawflower
Xerochrysum bracteatum
Season too short
21 Mar – 4 Apr
6-8 wk
16 May
0 wk
17 Jun
5 wk after
Purple-top vervain
Verbena bonariensis
23 Feb – 23 Mar
8 Apr
8-12 wk
18 May
3 Jun
0 wk
Cardoon
Cynara cardunculus
Season too short
21 Feb – 21 Mar
18 Mar
8-12 wk
16 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
16 May
9 Jul
0 wk
17 May
29 Jun
0 wk
Snapdragon
Antirrhinum majus
21 Feb – 21 Mar
4 May
8-12 wk
16 May
29 Jun
0 wk
26 May
19 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
21 Mar – 11 Apr
28 May
5-8 wk
16 May
2 Jul
0 wk
Stock
Matthiola incana
21 Mar – 4 Apr
28 May
6-8 wk
16 May
9 Jul
0 wk
29 May
29 Jun
2 wk after
Wormwood
Artemisia absinthium
21 Mar – 4 Apr
1 May
6-8 wk
16 May
12 Jun
0 wk
29 May
2 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
7 – 21 Mar
17 May
8-10 wk
16 May
12 Jul
0 wk
26 May
2 Jul
1 wk after
Petunia
Petunia
Season too short
21 Feb – 21 Mar
8-12 wk
16 May
0 wk
Sweet Scabious
Scabiosa atropurpurea
23 Mar – 6 Apr
22 Apr
6-8 wk
18 May
3 Jun
0 wk
28 Jun
6 wk after
Common zinnia
Zinnia elegans
Season too short
4 – 18 Apr
4-6 wk
16 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
Season too short
4 – 18 Apr
23 Apr
4-6 wk
16 May
21 May
0 wk
29 May
2 wk after
Scarlet milkweed
Asclepias curassavica
Season too short
6 Mar – 3 Apr
8-12 wk
29 May
2 wk after
Bee balm
Monarda didyma
21 Feb – 21 Mar
14 Apr
8-12 wk
16 May
9 Jun
0 wk
10 Jun
4 wk after
Yarrow
Achillea millefolium
21 Mar – 4 Apr
1 Apr
6-8 wk
16 May
0 wk
29 May
2 wk after
Safflower
Carthamus tinctorius
16 May
12 Jun
0 wk
17 May
2 Jun
0 wk
Iceland poppy
Papaver nudicaule
Season too short
21 Mar – 4 Apr
21 May
6-8 wk
16 May
2 Jul
0 wk
30 Apr
22 Jun
2 wk before
Bishop's flower
Ammi majus
4 – 18 Apr
1 Jun
4-6 wk
16 May
29 Jun
0 wk
29 May
19 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
3 Jun
3-4 wk
22 May
24 Jun
1 wk after
29 May
14 Jun
2 wk after
China aster
Callistephus chinensis
Fleece
27 Mar – 10 Apr
23 May
6-8 wk
22 May
4 Jul
1 wk after
10 Jun
24 Jun
4 wk after
Annual phlox
Phlox drummondii
Season too short
21 Mar – 4 Apr
6-8 wk
16 May
0 wk
29 May
2 wk after
Hollyhock
Alcea rosea
21 Mar – 4 Apr
6-8 wk
16 May
0 wk
29 May
2 wk after
Alpine delphinium
Delphinium elatum
21 Feb – 21 Mar
14 Apr
8-12 wk
16 May
9 Jun
0 wk
10 Jun
4 wk after
African marigold
Tagetes erecta
Season too short
21 Mar – 4 Apr
6-8 wk
16 May
0 wk
Black-eyed Susan
Rudbeckia hirta
23 Mar – 6 Apr
3 May
6-8 wk
18 May
14 Jun
0 wk
28 Jun
6 wk after
Wood sage
Salvia nemorosa
7 – 21 Mar
4 Apr
8-10 wk
16 May
30 May
0 wk
10 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
16 May
4 Jul
0 wk
17 May
24 Jun
0 wk
Painted tongue
Salpiglossis sinuata
Fleece
13 – 27 Mar
28 Apr
8-10 wk
22 May
23 Jun
1 wk after
Water forget-me-not
Myosotis scorpioides
21 Mar – 4 Apr
1 May
6-8 wk
16 May
12 Jun
0 wk
29 May
2 Jun
2 wk after