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Method
Rel. frost
Last spring frost (0°C) 27 May Normal year · 20 years of data
Frost-free season 109 days 27 May – 13 Sep
Probability that frost is over

50% = 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
12 Jun
5-7 wk
27 May
17 Jul
0 wk
28 May
7 Jul
0 wk
Broccoli
Brassica oleracea (Italica-gruppen)
15 – 29 Apr
24 Jun
4-6 wk
27 May
22 Jul
0 wk
28 May
12 Jul
0 wk
Chili pepper
Capsicum annuum
Season too short
15 Mar – 12 Apr
24 Mar
8-12 wk
7 Jun
2 wk after
Curly Kale
Brassica oleracea (Curly Kale-gruppen)
8 – 22 Apr
7 Jun
5-7 wk
27 May
12 Jul
0 wk
27 May
2 Jul
0 wk
Garden cucumber
Cucumis sativus
Greenhouse
10 – 17 May
31 May
3-4 wk
7 Jun
21 Jun
2 wk after
Florence Fennel
Foeniculum vulgare
Fleece
12 – 19 May
4 Jun
4-5 wk
16 Jun
2 Jul
3 wk after
21 Jun
22 Jun
4 wk after
Butter bean
Phaseolus lunatus
Season too short
9 – 16 Jun
3-4 wk
7 Jul
6 wk after
Onion
Allium cepa (Cepa-gruppen)
4 Mar – 1 Apr
28 Mar
8-12 wk
27 May
0 wk
9 Jun
2 wk after
Onion (sets)
Allium cepa (Cepa-gruppen)
28 May
12 Jun
0 wk
28 May
2 Jun
0 wk
Maize
Zea mays
Greenhouse
3 – 10 May
21 May
3-4 wk
31 May
11 Jun
1 wk after
Swiss Chard
Beta vulgaris (Flavescens-gruppen)
5 – 12 May
1 Jul
3-4 wk
2 Jun
22 Jul
1 wk after
9 Jun
12 Jul
2 wk after
Carrot
Daucus carota subsp. sativus var. sativus
27 May
2 Jul
0 wk
27 May
22 Jun
0 wk
Palm Kale
Brassica oleracea (Palm Kale-gruppen)
8 – 22 Apr
7 Jun
5-7 wk
27 May
12 Jul
0 wk
27 May
2 Jul
0 wk
Potato
Solanum tuberosum
25 Apr – 9 May
24 May
4-6 wk
6 Jun
21 Jun
1 wk after
6 Jun
11 Jun
1 wk after
Ornamental Kale
Brassica oleracea (Ornamental-gruppen)
8 – 22 Apr
17 Jun
5-7 wk
27 May
22 Jul
0 wk
28 May
12 Jul
0 wk
Pumpkin
Cucurbita pepo
Fleece
19 – 26 May
5 Jun
3-4 wk
16 Jun
26 Jun
3 wk after
Beetroot
Beta vulgaris (Conditiva-gruppen)
5 – 12 May
6 Jun
3-4 wk
2 Jun
27 Jun
1 wk after
9 Jun
17 Jun
2 wk after
Red Cabbage
Brassica oleracea (Red Cabbage-gruppen)
15 – 29 Apr
19 Jun
4-6 wk
27 May
17 Jul
0 wk
Lettuce
Lactuca sativa
29 Apr – 6 May
6 Jul
3-4 wk
27 May
27 Jul
0 wk
28 May
17 Jul
0 wk
Savoy Cabbage
Brassica oleracea (Savoy Cabbage-gruppen)
15 – 29 Apr
19 Jun
4-6 wk
27 May
17 Jul
0 wk
Shallot (bulbs)
Allium cepa (Aggregatum-gruppen)
29 Apr – 13 May
29 May
2-4 wk
27 May
12 Jun
0 wk
27 May
2 Jun
0 wk
Shallot (sets)
Allium cepa (Aggregatum-gruppen)
28 May
12 Jun
0 wk
28 May
2 Jun
0 wk
Spinach
Spinacia oleracea
29 Apr – 6 May
21 Jul
3-4 wk
27 May
11 Aug
0 wk
24 May
1 Aug
0 wk
Sweet potato
Ipomoea batatas
21 Jun – 5 Jul
4-6 wk
2 Aug
10 wk after
Garden tomato
Solanum lycopersicum
Greenhouse
5 – 19 Apr
30 Apr
6-8 wk
31 May
11 Jun
1 wk after
Tomatillo
Physalis ixocarpa
Common Bean
Phaseolus vulgaris
Fleece
10 – 24 May
7 Jun
2-4 wk
7 Jun
21 Jun
2 wk after
21 Jun
4 wk after
White Cabbage
Brassica oleracea (White Cabbage-gruppen)
15 – 29 Apr
19 Jun
4-6 wk
27 May
17 Jul
0 wk
Garden pea
Pisum sativum
29 Apr – 6 May
21 Jun
3-4 wk
27 May
12 Jul
0 wk
28 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
Fleece
5 – 19 May
14 May
4-6 wk
16 Jun
3 wk after
Lemon balm
Melissa officinalis
18 Mar – 1 Apr
17 May
8-10 wk
27 May
12 Jul
0 wk
21 Jun
2 Jul
4 wk after
Dill
Anethum graveolens
28 May
22 Jul
0 wk
Wild chives
Allium schoenoprasum
1 – 15 Apr
31 May
6-8 wk
27 May
12 Jul
0 wk
28 May
2 Jul
0 wk
Spearmint
Mentha spicata
4 Mar – 1 Apr
17 May
8-12 wk
27 May
12 Jul
0 wk
21 Jun
2 Jul
4 wk after
Coriander
Coriandrum sativum
27 May
11 Aug
0 wk
9 Jun
1 Aug
2 wk after
Garden sage
Salvia officinalis
24 Mar – 7 Apr
2 May
8-10 wk
2 Jun
27 Jun
1 wk after
Common thyme
Thymus vulgaris
18 Mar – 1 Apr
7 May
8-10 wk
27 May
2 Jul
0 wk
Oregano
Origanum vulgare
1 – 15 Apr
21 May
6-8 wk
27 May
2 Jul
0 wk
21 Jun
22 Jun
4 wk after
Parsley
Petroselinum crispum
1 – 15 Apr
21 May
6-8 wk
27 May
2 Jul
0 wk
28 May
22 Jun
0 wk
Rosemary
Salvia rosmarinus
24 Feb – 24 Mar
31 Mar
10-14 wk
2 Jun
9 Jun
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
Fleece
19 – 26 May
21 May
3-4 wk
16 Jun
3 wk after
Cornflower
Centaurea cyanus
27 May
12 Jul
0 wk
28 May
2 Jul
0 wk
Statice
Limonium sinuatum
7 – 21 Apr
18 Apr
8-10 wk
16 Jun
3 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
21 Apr – 5 May
2 May
6-8 wk
16 Jun
3 wk after
2 Aug
10 wk after
Pinnate dahlia
Dahlia × pinnata
16 – 30 Apr
6 May
6-8 wk
11 Jun
17 Jun
2 wk after
Pinnate dahlia (tubers)
Dahlia × pinnata
Fleece
14 Apr – 12 May
4 Jun
4-8 wk
9 Jun
2 Jul
2 wk after
9 Jun
22 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
7 Apr – 5 May
1 Jun
8-12 wk
30 Jun
27 Jul
5 wk after
Creeping zinnia
Sanvitalia procumbens
21 Apr – 5 May
12 May
6-8 wk
16 Jun
23 Jun
3 wk after
Hyacinth bean
Dolichos lablab
Season too short
5 – 19 May
4-6 wk
16 Jun
3 wk after
Chinese lantern
Physalis alkekengi
24 Mar – 7 Apr
17 Apr
8-10 wk
2 Jun
12 Jun
1 wk after
Love in a mist
Nigella damascena
27 May
27 Jun
0 wk
28 May
17 Jun
0 wk
Strawflower
Xerochrysum bracteatum
Fleece
12 – 26 Apr
29 Apr
6-8 wk
7 Jun
10 Jun
2 wk after
16 Jul
7 wk after
Purple-top vervain
Verbena bonariensis
10 Mar – 7 Apr
17 Apr
8-12 wk
2 Jun
12 Jun
1 wk after
Cardoon
Cynara cardunculus
Greenhouse
8 Mar – 5 Apr
18 Mar
8-12 wk
31 May
1 wk after
Regal-foxtail
Ptilotus nobilis
Greenhouse
15 Mar – 12 Apr
22 Apr
8-12 wk
7 Jun
17 Jun
2 wk after
Globe amaranth
Gomphrena globosa
Greenhouse
12 – 26 Apr
6 May
6-8 wk
7 Jun
17 Jun
2 wk after
Corn poppy
Papaver rhoeas
27 May
12 Jul
0 wk
28 May
2 Jul
0 wk
Snapdragon
Antirrhinum majus
4 Mar – 1 Apr
7 May
8-12 wk
27 May
2 Jul
0 wk
6 Jun
22 Jun
1 wk after
Flossflower
Ageratum houstonianum
Fleece
7 – 21 Apr
5 May
8-10 wk
16 Jun
30 Jun
3 wk after
Sweet pea
Lathyrus odoratus
1 – 22 Apr
28 May
5-8 wk
27 May
2 Jul
0 wk
Stock
Matthiola incana
1 – 15 Apr
31 May
6-8 wk
27 May
12 Jul
0 wk
9 Jun
2 Jul
2 wk after
Wormwood
Artemisia absinthium
1 – 15 Apr
1 May
6-8 wk
27 May
12 Jun
0 wk
9 Jun
2 wk after
Mexican sunflower
Tithonia rotundifolia
Greenhouse
26 Apr – 10 May
15 May
4-6 wk
7 Jun
12 Jun
2 wk after
Garden pansy
Viola × wittrockiana
18 Mar – 1 Apr
17 May
8-10 wk
27 May
12 Jul
0 wk
6 Jun
2 Jul
1 wk after
Petunia
Petunia
24 Mar – 21 Apr
18 Apr
8-12 wk
16 Jun
3 wk after
Sweet Scabious
Scabiosa atropurpurea
7 – 21 Apr
1 May
6-8 wk
2 Jun
12 Jun
1 wk after
9 Jul
6 wk after
Common zinnia
Zinnia elegans
5 – 19 May
14 May
4-6 wk
16 Jun
3 wk after
Common morning glory
Ipomoea purpurea
Fleece
12 – 26 May
21 May
3-5 wk
16 Jun
3 wk after
Garden cosmos
Cosmos bipinnatus
5 – 19 May
20 May
4-6 wk
16 Jun
17 Jun
3 wk after
9 Jul
6 wk after
Scarlet milkweed
Asclepias curassavica
Greenhouse
24 Mar – 21 Apr
22 May
8-12 wk
16 Jun
17 Jul
3 wk after
Bee balm
Monarda didyma
4 Mar – 1 Apr
17 Apr
8-12 wk
27 May
12 Jun
0 wk
21 Jun
4 wk after
Yarrow
Achillea millefolium
1 – 15 Apr
1 Apr
6-8 wk
27 May
0 wk
9 Jun
2 wk after
Safflower
Carthamus tinctorius
27 May
12 Jun
0 wk
28 May
2 Jun
0 wk
Iceland poppy
Papaver nudicaule
Season too short
1 – 15 Apr
21 May
6-8 wk
27 May
2 Jul
0 wk
11 May
22 Jun
2 wk before
Bishop's flower
Ammi majus
15 – 29 Apr
4 Jun
4-6 wk
27 May
2 Jul
0 wk
9 Jun
22 Jun
2 wk after
Drumsticks
Pycnosorus globosus
Greenhouse
15 – 29 Mar
3 Apr
10-12 wk
7 Jun
12 Jun
2 wk after
Sunflower
Helianthus annuus
19 – 26 May
8 Jun
3-4 wk
16 Jun
29 Jun
3 wk after
21 Jun
4 wk after
China aster
Callistephus chinensis
21 Apr – 5 May
28 May
6-8 wk
16 Jun
9 Jul
3 wk after
9 Jul
6 wk after
Annual phlox
Phlox drummondii
12 – 26 Apr
12 May
6-8 wk
7 Jun
23 Jun
2 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
17 Apr
8-12 wk
27 May
12 Jun
0 wk
21 Jun
4 wk after
African marigold
Tagetes erecta
21 Apr – 5 May
12 May
6-8 wk
16 Jun
23 Jun
3 wk after
Black-eyed Susan
Rudbeckia hirta
7 – 21 Apr
18 May
6-8 wk
2 Jun
29 Jun
1 wk after
9 Jul
6 wk after
Wood sage
Salvia nemorosa
18 Mar – 1 Apr
7 Apr
8-10 wk
27 May
2 Jun
0 wk
21 Jun
4 wk after
Black-eyed susan vine
Thunbergia alata
Fleece
7 Apr – 5 May
30 Apr
6-10 wk
16 Jun
3 wk after
California goldenpoppy
Eschscholzia californica
27 May
12 Jul
0 wk
28 May
2 Jul
0 wk
Painted tongue
Salpiglossis sinuata
7 – 21 Apr
22 Apr
8-10 wk
16 Jun
17 Jun
3 wk after
Water forget-me-not
Myosotis scorpioides
1 – 15 Apr
1 May
6-8 wk
27 May
12 Jun
0 wk
9 Jun
2 wk after