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Method
Rel. frost
Last spring frost (0°C) 20 Jun Frost 1 of 10 years · 20 years of data
Frost-free season 97 days 20 Jun – 25 Sep
Probability that frost is over

90% = 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)
2 – 16 May
13 Jun
5-7 wk
20 Jun
18 Jul
0 wk
21 Jun
8 Jul
0 wk
Broccoli
Brassica oleracea (Italica-gruppen)
9 – 23 May
25 Jun
4-6 wk
20 Jun
23 Jul
0 wk
21 Jun
13 Jul
0 wk
Chili pepper
Capsicum annuum
Season too short
3 Apr – 1 May
8-12 wk
26 Jun
1 wk after
Curly Kale
Brassica oleracea (Curly Kale-gruppen)
2 – 16 May
8 Jun
5-7 wk
20 Jun
13 Jul
0 wk
20 Jun
3 Jul
0 wk
Garden cucumber
Cucumis sativus
Season too short
29 May – 5 Jun
3-4 wk
26 Jun
1 wk after
Florence Fennel
Foeniculum vulgare
Fleece
29 May – 5 Jun
5 Jun
4-5 wk
3 Jul
3 Jul
2 wk after
15 Jul
4 wk after
Butter bean
Phaseolus lunatus
Season too short
1 – 8 Jul
3-4 wk
29 Jul
6 wk after
Onion
Allium cepa (Cepa-gruppen)
Season too short
28 Mar – 25 Apr
29 Mar
8-12 wk
20 Jun
0 wk
20 Jun
0 wk
Onion (sets)
Allium cepa (Cepa-gruppen)
Fleece
17 Jun
0 wk
17 Jun
0 wk
Maize
Zea mays
Season too short
23 – 30 May
3-4 wk
20 Jun
0 wk
Swiss Chard
Beta vulgaris (Flavescens-gruppen)
25 May – 1 Jun
2 Jul
3-4 wk
22 Jun
23 Jul
0 wk
3 Jul
13 Jul
2 wk after
Carrot
Daucus carota subsp. sativus var. sativus
20 Jun
3 Jul
0 wk
20 Jun
23 Jun
0 wk
Palm Kale
Brassica oleracea (Palm Kale-gruppen)
2 – 16 May
8 Jun
5-7 wk
20 Jun
13 Jul
0 wk
20 Jun
3 Jul
0 wk
Potato
Solanum tuberosum
Fleece
10 – 24 May
22 May
4-6 wk
21 Jun
0 wk
21 Jun
0 wk
Ornamental Kale
Brassica oleracea (Ornamental-gruppen)
2 – 16 May
18 Jun
5-7 wk
20 Jun
23 Jul
0 wk
21 Jun
13 Jul
0 wk
Pumpkin
Cucurbita pepo
Season too short
29 May – 5 Jun
3-4 wk
26 Jun
1 wk after
Beetroot
Beta vulgaris (Conditiva-gruppen)
25 May – 1 Jun
3-4 wk
22 Jun
0 wk
3 Jul
2 wk after
Red Cabbage
Brassica oleracea (Red Cabbage-gruppen)
9 – 23 May
20 Jun
4-6 wk
20 Jun
18 Jul
0 wk
Lettuce
Lactuca sativa
23 – 30 May
7 Jul
3-4 wk
20 Jun
28 Jul
0 wk
21 Jun
18 Jul
0 wk
Savoy Cabbage
Brassica oleracea (Savoy Cabbage-gruppen)
9 – 23 May
20 Jun
4-6 wk
20 Jun
18 Jul
0 wk
Shallot (bulbs)
Allium cepa (Aggregatum-gruppen)
23 May – 6 Jun
23 May
2-4 wk
20 Jun
0 wk
20 Jun
0 wk
Shallot (sets)
Allium cepa (Aggregatum-gruppen)
Fleece
17 Jun
0 wk
17 Jun
0 wk
Spinach
Spinacia oleracea
23 – 30 May
22 Jul
3-4 wk
20 Jun
12 Aug
0 wk
17 Jun
2 Aug
0 wk
Sweet potato
Ipomoea batatas
15 – 29 Jul
4-6 wk
26 Aug
10 wk after
Garden tomato
Solanum lycopersicum
Season too short
25 Apr – 9 May
6-8 wk
20 Jun
0 wk
Tomatillo
Physalis ixocarpa
Common Bean
Phaseolus vulgaris
Season too short
23 May – 6 Jun
2-4 wk
20 Jun
0 wk
3 Jul
2 wk after
White Cabbage
Brassica oleracea (White Cabbage-gruppen)
9 – 23 May
20 Jun
4-6 wk
20 Jun
18 Jul
0 wk
Garden pea
Pisum sativum
23 – 30 May
22 Jun
3-4 wk
20 Jun
13 Jul
0 wk
21 Jun
3 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
15 – 29 May
4-6 wk
26 Jun
1 wk after
Lemon balm
Melissa officinalis
11 – 25 Apr
18 May
8-10 wk
20 Jun
13 Jul
0 wk
15 Jul
4 wk after
Dill
Anethum graveolens
21 Jun
23 Jul
0 wk
Wild chives
Allium schoenoprasum
25 Apr – 9 May
1 Jun
6-8 wk
20 Jun
13 Jul
0 wk
21 Jun
3 Jul
0 wk
Spearmint
Mentha spicata
28 Mar – 25 Apr
18 May
8-12 wk
20 Jun
13 Jul
0 wk
15 Jul
4 wk after
Coriander
Coriandrum sativum
20 Jun
12 Aug
0 wk
3 Jul
2 Aug
2 wk after
Garden sage
Salvia officinalis
13 – 27 Apr
3 May
8-10 wk
22 Jun
28 Jun
0 wk
Common thyme
Thymus vulgaris
11 – 25 Apr
8 May
8-10 wk
20 Jun
3 Jul
0 wk
Oregano
Origanum vulgare
25 Apr – 9 May
22 May
6-8 wk
20 Jun
3 Jul
0 wk
15 Jul
4 wk after
Parsley
Petroselinum crispum
25 Apr – 9 May
22 May
6-8 wk
20 Jun
3 Jul
0 wk
21 Jun
23 Jun
0 wk
Rosemary
Salvia rosmarinus
16 Mar – 13 Apr
4 Apr
10-14 wk
22 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
29 May – 5 Jun
3-4 wk
26 Jun
1 wk after
Cornflower
Centaurea cyanus
20 Jun
13 Jul
0 wk
21 Jun
3 Jul
0 wk
Statice
Limonium sinuatum
Greenhouse
11 – 25 Apr
14 Apr
8-10 wk
20 Jun
0 wk
Sweet William
Dianthus barbatus
25 Apr – 9 May
6-8 wk
20 Jun
0 wk
30 Jun
1 wk after
Snow-on-the-mountain
Euphorbia marginata
Greenhouse
25 Apr – 9 May
28 Apr
6-8 wk
20 Jun
0 wk
22 Jul
5 wk after
Pinnate dahlia
Dahlia × pinnata
Greenhouse
25 Apr – 9 May
8 May
6-8 wk
20 Jun
0 wk
Pinnate dahlia (tubers)
Dahlia × pinnata
Greenhouse
1 – 29 May
22 May
4-8 wk
26 Jun
1 wk after
26 Jun
1 wk after
Foxglove
Digitalis purpurea
11 – 25 Apr
8-10 wk
20 Jun
0 wk
3 Jul
2 wk after
Busy lizzie
Impatiens walleriana
Greenhouse
3 Apr – 1 May
26 May
8-12 wk
26 Jun
21 Jul
1 wk after
Creeping zinnia
Sanvitalia procumbens
Greenhouse
25 Apr – 9 May
8 May
6-8 wk
20 Jun
0 wk
Hyacinth bean
Dolichos lablab
Season too short
22 May – 5 Jun
4-6 wk
3 Jul
2 wk after
Chinese lantern
Physalis alkekengi
13 – 27 Apr
18 Apr
8-10 wk
22 Jun
0 wk
Love in a mist
Nigella damascena
20 Jun
28 Jun
0 wk
21 Jun
0 wk
Strawflower
Xerochrysum bracteatum
Season too short
25 Apr – 9 May
6-8 wk
20 Jun
0 wk
22 Jul
5 wk after
Purple-top vervain
Verbena bonariensis
30 Mar – 27 Apr
18 Apr
8-12 wk
22 Jun
0 wk
Cardoon
Cynara cardunculus
Greenhouse
28 Mar – 25 Apr
8-12 wk
20 Jun
0 wk
Regal-foxtail
Ptilotus nobilis
Season too short
3 Apr – 1 May
8-12 wk
26 Jun
1 wk after
Globe amaranth
Gomphrena globosa
Season too short
1 – 15 May
6-8 wk
26 Jun
1 wk after
Corn poppy
Papaver rhoeas
20 Jun
13 Jul
0 wk
21 Jun
3 Jul
0 wk
Snapdragon
Antirrhinum majus
28 Mar – 25 Apr
8 May
8-12 wk
20 Jun
3 Jul
0 wk
30 Jun
1 wk after
Flossflower
Ageratum houstonianum
Greenhouse
17 Apr – 1 May
24 Apr
8-10 wk
26 Jun
1 wk after
Sweet pea
Lathyrus odoratus
25 Apr – 16 May
29 May
5-8 wk
20 Jun
3 Jul
0 wk
Stock
Matthiola incana
25 Apr – 9 May
1 Jun
6-8 wk
20 Jun
13 Jul
0 wk
3 Jul
3 Jul
2 wk after
Wormwood
Artemisia absinthium
25 Apr – 9 May
2 May
6-8 wk
20 Jun
0 wk
3 Jul
2 wk after
Mexican sunflower
Tithonia rotundifolia
Season too short
15 – 29 May
4-6 wk
26 Jun
1 wk after
Garden pansy
Viola × wittrockiana
11 – 25 Apr
18 May
8-10 wk
20 Jun
13 Jul
0 wk
30 Jun
3 Jul
1 wk after
Petunia
Petunia
Greenhouse
28 Mar – 25 Apr
14 Apr
8-12 wk
20 Jun
0 wk
Sweet Scabious
Scabiosa atropurpurea
27 Apr – 11 May
2 May
6-8 wk
22 Jun
0 wk
2 Aug
6 wk after
Common zinnia
Zinnia elegans
Season too short
9 – 23 May
4-6 wk
20 Jun
0 wk
Common morning glory
Ipomoea purpurea
Season too short
22 May – 5 Jun
3-5 wk
26 Jun
1 wk after
Garden cosmos
Cosmos bipinnatus
Greenhouse
9 – 23 May
22 May
4-6 wk
20 Jun
0 wk
3 Jul
2 wk after
Scarlet milkweed
Asclepias curassavica
Season too short
10 Apr – 8 May
8-12 wk
3 Jul
2 wk after
Bee balm
Monarda didyma
28 Mar – 25 Apr
18 Apr
8-12 wk
20 Jun
0 wk
15 Jul
4 wk after
Yarrow
Achillea millefolium
25 Apr – 9 May
6-8 wk
20 Jun
0 wk
3 Jul
2 wk after
Safflower
Carthamus tinctorius
20 Jun
0 wk
21 Jun
0 wk
Iceland poppy
Papaver nudicaule
Season too short
25 Apr – 9 May
22 May
6-8 wk
20 Jun
3 Jul
0 wk
4 Jun
23 Jun
2 wk before
Bishop's flower
Ammi majus
9 – 23 May
5 Jun
4-6 wk
20 Jun
3 Jul
0 wk
3 Jul
2 wk after
Drumsticks
Pycnosorus globosus
Season too short
3 – 17 Apr
10-12 wk
26 Jun
1 wk after
Sunflower
Helianthus annuus
5 – 12 Jun
12 Jun
3-4 wk
3 Jul
3 Jul
2 wk after
15 Jul
4 wk after
China aster
Callistephus chinensis
8 – 22 May
1 Jun
6-8 wk
3 Jul
13 Jul
2 wk after
2 Aug
6 wk after
Annual phlox
Phlox drummondii
Greenhouse
25 Apr – 9 May
8 May
6-8 wk
20 Jun
0 wk
3 Jul
2 wk after
Hollyhock
Alcea rosea
25 Apr – 9 May
6-8 wk
20 Jun
0 wk
3 Jul
2 wk after
Alpine delphinium
Delphinium elatum
28 Mar – 25 Apr
18 Apr
8-12 wk
20 Jun
0 wk
15 Jul
4 wk after
African marigold
Tagetes erecta
Greenhouse
25 Apr – 9 May
8 May
6-8 wk
20 Jun
0 wk
Black-eyed Susan
Rudbeckia hirta
27 Apr – 11 May
22 May
6-8 wk
22 Jun
3 Jul
0 wk
2 Aug
6 wk after
Wood sage
Salvia nemorosa
11 – 25 Apr
8-10 wk
20 Jun
0 wk
15 Jul
4 wk after
Black-eyed susan vine
Thunbergia alata
Season too short
17 Apr – 15 May
6-10 wk
26 Jun
1 wk after
California goldenpoppy
Eschscholzia californica
20 Jun
13 Jul
0 wk
21 Jun
3 Jul
0 wk
Painted tongue
Salpiglossis sinuata
Fleece
17 Apr – 1 May
8 May
8-10 wk
26 Jun
3 Jul
1 wk after
Water forget-me-not
Myosotis scorpioides
25 Apr – 9 May
2 May
6-8 wk
20 Jun
0 wk
3 Jul
2 wk after