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Method
Rel. frost
Last spring frost (0°C) 27 May Frost 1 of 4 years · 20 years of data
Frost-free season 116 days 27 May – 20 Sep
Probability that frost is over

75% = 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)
8 – 22 Apr
9 Jun
5-7 wk
27 May
14 Jul
0 wk
28 May
4 Jul
0 wk
Broccoli
Brassica oleracea (Italica-gruppen)
15 – 29 Apr
21 Jun
4-6 wk
27 May
19 Jul
0 wk
28 May
9 Jul
0 wk
Chili pepper
Capsicum annuum
Season too short
10 Mar – 7 Apr
13 Mar
8-12 wk
2 Jun
1 wk after
Curly Kale
Brassica oleracea (Curly Kale-gruppen)
8 – 22 Apr
4 Jun
5-7 wk
27 May
9 Jul
0 wk
27 May
29 Jun
0 wk
Garden cucumber
Cucumis sativus
Greenhouse
5 – 12 May
12 Jun
3-4 wk
2 Jun
3 Jul
1 wk after
Florence Fennel
Foeniculum vulgare
Fleece
5 – 12 May
1 Jun
4-5 wk
9 Jun
29 Jun
2 wk after
21 Jun
4 wk after
Butter bean
Phaseolus lunatus
Season too short
7 – 14 Jun
3-4 wk
5 Jul
6 wk after
Onion
Allium cepa (Cepa-gruppen)
Fleece
4 Mar – 1 Apr
25 Mar
8-12 wk
27 May
0 wk
2 Jun
1 wk after
Onion (sets)
Allium cepa (Cepa-gruppen)
28 May
30 May
0 wk
28 May
0 wk
Maize
Zea mays
Greenhouse
29 Apr – 6 May
2 Jun
3-4 wk
27 May
23 Jun
0 wk
Swiss Chard
Beta vulgaris (Flavescens-gruppen)
1 – 8 May
28 Jun
3-4 wk
29 May
19 Jul
0 wk
9 Jun
9 Jul
2 wk after
Carrot
Daucus carota subsp. sativus var. sativus
27 May
29 Jun
0 wk
27 May
19 Jun
0 wk
Palm Kale
Brassica oleracea (Palm Kale-gruppen)
8 – 22 Apr
4 Jun
5-7 wk
27 May
9 Jul
0 wk
27 May
29 Jun
0 wk
Potato
Solanum tuberosum
Fleece
16 – 30 Apr
22 May
4-6 wk
28 May
19 Jun
0 wk
28 May
9 Jun
0 wk
Ornamental Kale
Brassica oleracea (Ornamental-gruppen)
8 – 22 Apr
14 Jun
5-7 wk
27 May
19 Jul
0 wk
28 May
9 Jul
0 wk
Pumpkin
Cucurbita pepo
Fleece
12 – 19 May
17 Jun
3-4 wk
9 Jun
8 Jul
2 wk after
Beetroot
Beta vulgaris (Conditiva-gruppen)
1 – 8 May
13 May
3-4 wk
29 May
3 Jun
0 wk
9 Jun
2 wk after
Red Cabbage
Brassica oleracea (Red Cabbage-gruppen)
15 – 29 Apr
16 Jun
4-6 wk
27 May
14 Jul
0 wk
Lettuce
Lactuca sativa
29 Apr – 6 May
3 Jul
3-4 wk
27 May
24 Jul
0 wk
28 May
14 Jul
0 wk
Savoy Cabbage
Brassica oleracea (Savoy Cabbage-gruppen)
15 – 29 Apr
16 Jun
4-6 wk
27 May
14 Jul
0 wk
Shallot (bulbs)
Allium cepa (Aggregatum-gruppen)
29 Apr – 13 May
24 May
2-4 wk
27 May
7 Jun
0 wk
27 May
28 May
0 wk
Shallot (sets)
Allium cepa (Aggregatum-gruppen)
28 May
30 May
0 wk
28 May
0 wk
Spinach
Spinacia oleracea
29 Apr – 6 May
18 Jul
3-4 wk
27 May
8 Aug
0 wk
24 May
29 Jul
0 wk
Sweet potato
Ipomoea batatas
21 Jun – 5 Jul
4-6 wk
2 Aug
10 wk after
Garden tomato
Solanum lycopersicum
Greenhouse
1 – 15 Apr
12 May
6-8 wk
27 May
23 Jun
0 wk
Tomatillo
Physalis ixocarpa
Common Bean
Phaseolus vulgaris
Fleece
5 – 19 May
19 Jun
2-4 wk
2 Jun
3 Jul
1 wk after
21 Jun
23 Jun
4 wk after
White Cabbage
Brassica oleracea (White Cabbage-gruppen)
15 – 29 Apr
16 Jun
4-6 wk
27 May
14 Jul
0 wk
Garden pea
Pisum sativum
29 Apr – 6 May
18 Jun
3-4 wk
27 May
9 Jul
0 wk
28 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
Fleece
28 Apr – 12 May
26 May
4-6 wk
9 Jun
23 Jun
2 wk after
Lemon balm
Melissa officinalis
18 Mar – 1 Apr
14 May
8-10 wk
27 May
9 Jul
0 wk
21 Jun
29 Jun
4 wk after
Dill
Anethum graveolens
28 May
19 Jul
0 wk
Wild chives
Allium schoenoprasum
1 – 15 Apr
28 May
6-8 wk
27 May
9 Jul
0 wk
28 May
29 Jun
0 wk
Spearmint
Mentha spicata
4 Mar – 1 Apr
14 May
8-12 wk
27 May
9 Jul
0 wk
21 Jun
29 Jun
4 wk after
Coriander
Coriandrum sativum
27 May
8 Aug
0 wk
9 Jun
29 Jul
2 wk after
Garden sage
Salvia officinalis
20 Mar – 3 Apr
29 Apr
8-10 wk
29 May
24 Jun
0 wk
Common thyme
Thymus vulgaris
18 Mar – 1 Apr
4 May
8-10 wk
27 May
29 Jun
0 wk
Oregano
Origanum vulgare
1 – 15 Apr
18 May
6-8 wk
27 May
29 Jun
0 wk
21 Jun
4 wk after
Parsley
Petroselinum crispum
1 – 15 Apr
18 May
6-8 wk
27 May
29 Jun
0 wk
28 May
19 Jun
0 wk
Rosemary
Salvia rosmarinus
20 Feb – 20 Mar
31 Mar
10-14 wk
29 May
9 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
Fleece
12 – 19 May
2 Jun
3-4 wk
9 Jun
23 Jun
2 wk after
Cornflower
Centaurea cyanus
27 May
9 Jul
0 wk
28 May
29 Jun
0 wk
Statice
Limonium sinuatum
31 Mar – 14 Apr
21 Apr
8-10 wk
9 Jun
16 Jun
2 wk after
Sweet William
Dianthus barbatus
1 – 15 Apr
6-8 wk
27 May
0 wk
6 Jun
1 wk after
Snow-on-the-mountain
Euphorbia marginata
14 – 28 Apr
5 May
6-8 wk
9 Jun
16 Jun
2 wk after
2 Aug
10 wk after
Pinnate dahlia
Dahlia × pinnata
12 – 26 Apr
9 May
6-8 wk
7 Jun
20 Jun
2 wk after
Pinnate dahlia (tubers)
Dahlia × pinnata
Fleece
14 Apr – 12 May
1 Jun
4-8 wk
9 Jun
29 Jun
2 wk after
9 Jun
19 Jun
2 wk after
Foxglove
Digitalis purpurea
18 Mar – 1 Apr
8-10 wk
27 May
0 wk
9 Jun
2 wk after
Busy lizzie
Impatiens walleriana
5 Apr – 3 May
13 Jun
8-12 wk
28 Jun
8 Aug
5 wk after
Creeping zinnia
Sanvitalia procumbens
14 – 28 Apr
15 May
6-8 wk
9 Jun
26 Jun
2 wk after
Hyacinth bean
Dolichos lablab
Season too short
28 Apr – 12 May
4-6 wk
9 Jun
2 wk after
Chinese lantern
Physalis alkekengi
20 Mar – 3 Apr
14 Apr
8-10 wk
29 May
9 Jun
0 wk
Love in a mist
Nigella damascena
27 May
24 Jun
0 wk
28 May
14 Jun
0 wk
Strawflower
Xerochrysum bracteatum
Fleece
7 – 21 Apr
8 May
6-8 wk
2 Jun
19 Jun
1 wk after
16 Jul
7 wk after
Purple-top vervain
Verbena bonariensis
6 Mar – 3 Apr
14 Apr
8-12 wk
29 May
9 Jun
0 wk
Cardoon
Cynara cardunculus
Greenhouse
4 Mar – 1 Apr
15 Mar
8-12 wk
27 May
0 wk
Regal-foxtail
Ptilotus nobilis
Fleece
17 Mar – 14 Apr
18 Apr
8-12 wk
9 Jun
13 Jun
2 wk after
Globe amaranth
Gomphrena globosa
Fleece
14 – 28 Apr
2 May
6-8 wk
9 Jun
13 Jun
2 wk after
Corn poppy
Papaver rhoeas
27 May
9 Jul
0 wk
28 May
29 Jun
0 wk
Snapdragon
Antirrhinum majus
4 Mar – 1 Apr
4 May
8-12 wk
27 May
29 Jun
0 wk
6 Jun
19 Jun
1 wk after
Flossflower
Ageratum houstonianum
Fleece
31 Mar – 14 Apr
14 May
8-10 wk
9 Jun
9 Jul
2 wk after
Sweet pea
Lathyrus odoratus
1 – 22 Apr
25 May
5-8 wk
27 May
29 Jun
0 wk
Stock
Matthiola incana
1 – 15 Apr
28 May
6-8 wk
27 May
9 Jul
0 wk
9 Jun
29 Jun
2 wk after
Wormwood
Artemisia absinthium
1 – 15 Apr
28 Apr
6-8 wk
27 May
9 Jun
0 wk
9 Jun
2 wk after
Mexican sunflower
Tithonia rotundifolia
Greenhouse
21 Apr – 5 May
18 May
4-6 wk
2 Jun
15 Jun
1 wk after
Garden pansy
Viola × wittrockiana
18 Mar – 1 Apr
14 May
8-10 wk
27 May
9 Jul
0 wk
6 Jun
29 Jun
1 wk after
Petunia
Petunia
17 Mar – 14 Apr
21 Apr
8-12 wk
9 Jun
16 Jun
2 wk after
Sweet Scabious
Scabiosa atropurpurea
3 – 17 Apr
28 Apr
6-8 wk
29 May
9 Jun
0 wk
9 Jul
6 wk after
Common zinnia
Zinnia elegans
28 Apr – 12 May
26 May
4-6 wk
9 Jun
23 Jun
2 wk after
Common morning glory
Ipomoea purpurea
Fleece
5 – 19 May
2 Jun
3-5 wk
9 Jun
23 Jun
2 wk after
Garden cosmos
Cosmos bipinnatus
28 Apr – 12 May
23 May
4-6 wk
9 Jun
20 Jun
2 wk after
9 Jul
6 wk after
Scarlet milkweed
Asclepias curassavica
Fleece
5 Apr – 3 May
18 May
8-12 wk
28 Jun
13 Jul
5 wk after
Bee balm
Monarda didyma
4 Mar – 1 Apr
14 Apr
8-12 wk
27 May
9 Jun
0 wk
21 Jun
4 wk after
Yarrow
Achillea millefolium
1 – 15 Apr
6-8 wk
27 May
0 wk
9 Jun
2 wk after
Safflower
Carthamus tinctorius
27 May
9 Jun
0 wk
28 May
30 May
0 wk
Iceland poppy
Papaver nudicaule
Season too short
1 – 15 Apr
18 May
6-8 wk
27 May
29 Jun
0 wk
11 May
19 Jun
2 wk before
Bishop's flower
Ammi majus
15 – 29 Apr
1 Jun
4-6 wk
27 May
29 Jun
0 wk
9 Jun
19 Jun
2 wk after
Drumsticks
Pycnosorus globosus
Greenhouse
10 – 24 Mar
31 Mar
10-12 wk
2 Jun
9 Jun
1 wk after
Sunflower
Helianthus annuus
12 – 19 May
8 Jun
3-4 wk
9 Jun
29 Jun
2 wk after
21 Jun
4 wk after
China aster
Callistephus chinensis
14 – 28 Apr
28 May
6-8 wk
9 Jun
9 Jul
2 wk after
9 Jul
6 wk after
Annual phlox
Phlox drummondii
7 – 21 Apr
15 May
6-8 wk
2 Jun
26 Jun
1 wk after
9 Jul
6 wk after
Hollyhock
Alcea rosea
1 – 15 Apr
6-8 wk
27 May
0 wk
9 Jun
2 wk after
Alpine delphinium
Delphinium elatum
4 Mar – 1 Apr
14 Apr
8-12 wk
27 May
9 Jun
0 wk
21 Jun
4 wk after
African marigold
Tagetes erecta
14 – 28 Apr
15 May
6-8 wk
9 Jun
26 Jun
2 wk after
Black-eyed Susan
Rudbeckia hirta
3 – 17 Apr
18 May
6-8 wk
29 May
29 Jun
0 wk
9 Jul
6 wk after
Wood sage
Salvia nemorosa
18 Mar – 1 Apr
4 Apr
8-10 wk
27 May
30 May
0 wk
21 Jun
4 wk after
Black-eyed susan vine
Thunbergia alata
Fleece
31 Mar – 28 Apr
12 May
6-10 wk
9 Jun
23 Jun
2 wk after
California goldenpoppy
Eschscholzia californica
27 May
9 Jul
0 wk
28 May
29 Jun
0 wk
Painted tongue
Salpiglossis sinuata
31 Mar – 14 Apr
27 Apr
8-10 wk
9 Jun
22 Jun
2 wk after
Water forget-me-not
Myosotis scorpioides
1 – 15 Apr
28 Apr
6-8 wk
27 May
9 Jun
0 wk
9 Jun
2 wk after