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Method
Rel. frost
Last spring frost (0°C) 21 May Frost 1 of 4 years · 20 years of data
Frost-free season 136 days 21 May – 4 Oct
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)
2 – 16 Apr
12 Jun
5-7 wk
21 May
17 Jul
0 wk
22 May
7 Jul
0 wk
Broccoli
Brassica oleracea (Italica-gruppen)
9 – 23 Apr
24 Jun
4-6 wk
21 May
22 Jul
0 wk
22 May
12 Jul
0 wk
Chili pepper
Capsicum annuum
Fleece
11 Mar – 8 Apr
12 Apr
8-12 wk
3 Jun
7 Jun
2 wk after
Curly Kale
Brassica oleracea (Curly Kale-gruppen)
2 – 16 Apr
7 Jun
5-7 wk
21 May
12 Jul
0 wk
21 May
2 Jul
0 wk
Garden cucumber
Cucumis sativus
25 May – 1 Jun
6 Jun
3-4 wk
22 Jun
27 Jun
5 wk after
Florence Fennel
Foeniculum vulgare
18 – 25 May
4 Jun
4-5 wk
22 Jun
2 Jul
5 wk after
3 Jul
6 wk after
Butter bean
Phaseolus lunatus
Greenhouse
1 – 8 Jun
3-4 wk
29 Jun
6 wk after
Onion
Allium cepa (Cepa-gruppen)
26 Feb – 26 Mar
28 Mar
8-12 wk
21 May
23 May
0 wk
3 Jun
2 wk after
Onion (sets)
Allium cepa (Cepa-gruppen)
22 May
12 Jun
0 wk
22 May
2 Jun
0 wk
Maize
Zea mays
6 – 13 May
27 May
3-4 wk
3 Jun
17 Jun
2 wk after
Swiss Chard
Beta vulgaris (Flavescens-gruppen)
25 Apr – 2 May
1 Jul
3-4 wk
23 May
22 Jul
0 wk
3 Jun
12 Jul
2 wk after
Carrot
Daucus carota subsp. sativus var. sativus
21 May
2 Jul
0 wk
21 May
22 Jun
0 wk
Palm Kale
Brassica oleracea (Palm Kale-gruppen)
2 – 16 Apr
7 Jun
5-7 wk
21 May
12 Jul
0 wk
21 May
2 Jul
0 wk
Potato
Solanum tuberosum
19 Apr – 3 May
28 May
4-6 wk
31 May
25 Jun
1 wk after
31 May
15 Jun
1 wk after
Ornamental Kale
Brassica oleracea (Ornamental-gruppen)
2 – 16 Apr
17 Jun
5-7 wk
21 May
22 Jul
0 wk
22 May
12 Jul
0 wk
Pumpkin
Cucurbita pepo
25 May – 1 Jun
19 Jun
3-4 wk
22 Jun
10 Jul
5 wk after
Beetroot
Beta vulgaris (Conditiva-gruppen)
25 Apr – 2 May
11 Jun
3-4 wk
23 May
2 Jul
0 wk
3 Jun
22 Jun
2 wk after
Red Cabbage
Brassica oleracea (Red Cabbage-gruppen)
9 – 23 Apr
19 Jun
4-6 wk
21 May
17 Jul
0 wk
Lettuce
Lactuca sativa
23 – 30 Apr
6 Jul
3-4 wk
21 May
27 Jul
0 wk
22 May
17 Jul
0 wk
Savoy Cabbage
Brassica oleracea (Savoy Cabbage-gruppen)
9 – 23 Apr
19 Jun
4-6 wk
21 May
17 Jul
0 wk
Shallot (bulbs)
Allium cepa (Aggregatum-gruppen)
23 Apr – 7 May
29 May
2-4 wk
21 May
12 Jun
0 wk
21 May
2 Jun
0 wk
Shallot (sets)
Allium cepa (Aggregatum-gruppen)
22 May
12 Jun
0 wk
22 May
2 Jun
0 wk
Spinach
Spinacia oleracea
23 – 30 Apr
21 Jul
3-4 wk
21 May
11 Aug
0 wk
18 May
1 Aug
0 wk
Sweet potato
Ipomoea batatas
15 – 29 Jun
4-6 wk
27 Jul
10 wk after
Garden tomato
Solanum lycopersicum
8 – 22 Apr
6 May
6-8 wk
3 Jun
17 Jun
2 wk after
Tomatillo
Physalis ixocarpa
Common Bean
Phaseolus vulgaris
6 – 20 May
21 Jun
2-4 wk
3 Jun
5 Jul
2 wk after
3 Jul
6 wk after
White Cabbage
Brassica oleracea (White Cabbage-gruppen)
9 – 23 Apr
19 Jun
4-6 wk
21 May
17 Jul
0 wk
Garden pea
Pisum sativum
23 – 30 Apr
21 Jun
3-4 wk
21 May
12 Jul
0 wk
22 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
11 – 25 May
28 May
4-6 wk
22 Jun
25 Jun
5 wk after
Lemon balm
Melissa officinalis
12 – 26 Mar
17 May
8-10 wk
21 May
12 Jul
0 wk
15 Jun
2 Jul
4 wk after
Dill
Anethum graveolens
22 May
22 Jul
0 wk
Wild chives
Allium schoenoprasum
26 Mar – 9 Apr
31 May
6-8 wk
21 May
12 Jul
0 wk
22 May
2 Jul
0 wk
Spearmint
Mentha spicata
26 Feb – 26 Mar
17 May
8-12 wk
21 May
12 Jul
0 wk
15 Jun
2 Jul
4 wk after
Coriander
Coriandrum sativum
21 May
11 Aug
0 wk
3 Jun
1 Aug
2 wk after
Garden sage
Salvia officinalis
14 – 28 Mar
2 May
8-10 wk
23 May
27 Jun
0 wk
Common thyme
Thymus vulgaris
12 – 26 Mar
7 May
8-10 wk
21 May
2 Jul
0 wk
Oregano
Origanum vulgare
26 Mar – 9 Apr
21 May
6-8 wk
21 May
2 Jul
0 wk
15 Jun
22 Jun
4 wk after
Parsley
Petroselinum crispum
26 Mar – 9 Apr
21 May
6-8 wk
21 May
2 Jul
0 wk
22 May
22 Jun
0 wk
Rosemary
Salvia rosmarinus
14 Feb – 14 Mar
3 Apr
10-14 wk
23 May
12 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
25 May – 1 Jun
4 Jun
3-4 wk
22 Jun
25 Jun
5 wk after
Cornflower
Centaurea cyanus
21 May
12 Jul
0 wk
22 May
2 Jul
0 wk
Statice
Limonium sinuatum
25 Mar – 8 Apr
4 May
8-10 wk
3 Jun
29 Jun
2 wk after
Sweet William
Dianthus barbatus
26 Mar – 9 Apr
6-8 wk
21 May
0 wk
31 May
1 wk after
Snow-on-the-mountain
Euphorbia marginata
8 – 22 Apr
18 May
6-8 wk
3 Jun
29 Jun
2 wk after
27 Jul
10 wk after
Pinnate dahlia
Dahlia × pinnata
6 – 20 Apr
21 May
6-8 wk
1 Jun
2 Jul
2 wk after
Pinnate dahlia (tubers)
Dahlia × pinnata
20 Apr – 18 May
4 Jun
4-8 wk
15 Jun
2 Jul
4 wk after
15 Jun
22 Jun
4 wk after
Foxglove
Digitalis purpurea
12 – 26 Mar
8-10 wk
21 May
0 wk
3 Jun
2 wk after
Busy lizzie
Impatiens walleriana
30 Mar – 27 Apr
24 Jun
8-12 wk
22 Jun
19 Aug
5 wk after
Creeping zinnia
Sanvitalia procumbens
8 – 22 Apr
28 May
6-8 wk
3 Jun
9 Jul
2 wk after
Hyacinth bean
Dolichos lablab
Greenhouse
22 Apr – 6 May
7 May
4-6 wk
3 Jun
4 Jun
2 wk after
Chinese lantern
Physalis alkekengi
14 – 28 Mar
17 Apr
8-10 wk
23 May
12 Jun
0 wk
Love in a mist
Nigella damascena
21 May
27 Jun
0 wk
22 May
17 Jun
0 wk
Strawflower
Xerochrysum bracteatum
8 – 22 Apr
8 May
6-8 wk
3 Jun
19 Jun
2 wk after
27 Jul
10 wk after
Purple-top vervain
Verbena bonariensis
28 Feb – 28 Mar
17 Apr
8-12 wk
23 May
12 Jun
0 wk
Cardoon
Cynara cardunculus
Fleece
4 Mar – 1 Apr
18 Mar
8-12 wk
27 May
1 wk after
Regal-foxtail
Ptilotus nobilis
30 Mar – 27 Apr
20 Apr
8-12 wk
22 Jun
5 wk after
Globe amaranth
Gomphrena globosa
27 Apr – 11 May
4 May
6-8 wk
22 Jun
5 wk after
Corn poppy
Papaver rhoeas
21 May
12 Jul
0 wk
22 May
2 Jul
0 wk
Snapdragon
Antirrhinum majus
26 Feb – 26 Mar
7 May
8-12 wk
21 May
2 Jul
0 wk
31 May
22 Jun
1 wk after
Flossflower
Ageratum houstonianum
13 – 27 Apr
14 May
8-10 wk
22 Jun
9 Jul
5 wk after
Sweet pea
Lathyrus odoratus
26 Mar – 16 Apr
28 May
5-8 wk
21 May
2 Jul
0 wk
Stock
Matthiola incana
26 Mar – 9 Apr
31 May
6-8 wk
21 May
12 Jul
0 wk
3 Jun
2 Jul
2 wk after
Wormwood
Artemisia absinthium
26 Mar – 9 Apr
1 May
6-8 wk
21 May
12 Jun
0 wk
3 Jun
2 wk after
Mexican sunflower
Tithonia rotundifolia
11 – 25 May
13 May
4-6 wk
22 Jun
5 wk after
Garden pansy
Viola × wittrockiana
12 – 26 Mar
17 May
8-10 wk
21 May
12 Jul
0 wk
31 May
2 Jul
1 wk after
Petunia
Petunia
11 Mar – 8 Apr
4 May
8-12 wk
3 Jun
29 Jun
2 wk after
Sweet Scabious
Scabiosa atropurpurea
28 Mar – 11 Apr
1 May
6-8 wk
23 May
12 Jun
0 wk
3 Jul
6 wk after
Common zinnia
Zinnia elegans
22 Apr – 6 May
6 Jun
4-6 wk
3 Jun
4 Jul
2 wk after
Common morning glory
Ipomoea purpurea
18 May – 1 Jun
4 Jun
3-5 wk
22 Jun
25 Jun
5 wk after
Garden cosmos
Cosmos bipinnatus
22 Apr – 6 May
4 Jun
4-6 wk
3 Jun
2 Jul
2 wk after
3 Jul
6 wk after
Scarlet milkweed
Asclepias curassavica
20 Apr – 18 May
20 May
8-12 wk
13 Jul
15 Jul
8 wk after
Bee balm
Monarda didyma
26 Feb – 26 Mar
17 Apr
8-12 wk
21 May
12 Jun
0 wk
15 Jun
4 wk after
Yarrow
Achillea millefolium
26 Mar – 9 Apr
1 Apr
6-8 wk
21 May
0 wk
3 Jun
2 wk after
Safflower
Carthamus tinctorius
21 May
12 Jun
0 wk
22 May
2 Jun
0 wk
Iceland poppy
Papaver nudicaule
Season too short
26 Mar – 9 Apr
21 May
6-8 wk
21 May
2 Jul
0 wk
5 May
22 Jun
2 wk before
Bishop's flower
Ammi majus
9 – 23 Apr
4 Jun
4-6 wk
21 May
2 Jul
0 wk
3 Jun
22 Jun
2 wk after
Drumsticks
Pycnosorus globosus
Fleece
11 – 25 Mar
3 Apr
10-12 wk
3 Jun
12 Jun
2 wk after
Sunflower
Helianthus annuus
6 – 13 May
11 Jun
3-4 wk
3 Jun
2 Jul
2 wk after
15 Jun
22 Jun
4 wk after
China aster
Callistephus chinensis
8 – 22 Apr
31 May
6-8 wk
3 Jun
12 Jul
2 wk after
3 Jul
6 wk after
Annual phlox
Phlox drummondii
1 – 15 Apr
28 May
6-8 wk
27 May
9 Jul
1 wk after
3 Jul
6 wk after
Hollyhock
Alcea rosea
26 Mar – 9 Apr
6-8 wk
21 May
0 wk
3 Jun
2 wk after
Alpine delphinium
Delphinium elatum
26 Feb – 26 Mar
17 Apr
8-12 wk
21 May
12 Jun
0 wk
15 Jun
4 wk after
African marigold
Tagetes erecta
8 – 22 Apr
28 May
6-8 wk
3 Jun
9 Jul
2 wk after
Black-eyed Susan
Rudbeckia hirta
28 Mar – 11 Apr
21 May
6-8 wk
23 May
2 Jul
0 wk
3 Jul
6 wk after
Wood sage
Salvia nemorosa
12 – 26 Mar
7 Apr
8-10 wk
21 May
2 Jun
0 wk
15 Jun
4 wk after
Black-eyed susan vine
Thunbergia alata
13 Apr – 11 May
14 May
6-10 wk
22 Jun
25 Jun
5 wk after
California goldenpoppy
Eschscholzia californica
21 May
12 Jul
0 wk
22 May
2 Jul
0 wk
Painted tongue
Salpiglossis sinuata
25 Mar – 8 Apr
7 May
8-10 wk
3 Jun
2 Jul
2 wk after
Water forget-me-not
Myosotis scorpioides
26 Mar – 9 Apr
1 May
6-8 wk
21 May
12 Jun
0 wk
3 Jun
2 wk after