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Method
Rel. frost
Last spring frost (0°C) 8 May Frost 9 of 10 years · 20 years of data
Frost-free season 115 days 8 May – 31 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)
20 Mar – 3 Apr
14 Jun
5-7 wk
8 May
19 Jul
0 wk
12 May
9 Jul
1 wk after
Broccoli
Brassica oleracea (Italica-gruppen)
27 Mar – 10 Apr
26 Jun
4-6 wk
8 May
24 Jul
0 wk
12 May
14 Jul
1 wk after
Chili pepper
Capsicum annuum
Season too short
28 Feb – 28 Mar
8-12 wk
23 May
2 wk after
Curly Kale
Brassica oleracea (Curly Kale-gruppen)
20 Mar – 3 Apr
9 Jun
5-7 wk
8 May
14 Jul
0 wk
8 May
4 Jul
0 wk
Garden cucumber
Cucumis sativus
Season too short
25 Apr – 2 May
3-4 wk
23 May
2 wk after
Florence Fennel
Foeniculum vulgare
Fleece
30 Apr – 7 May
23 May
4-5 wk
4 Jun
20 Jun
4 wk after
12 Jun
5 wk after
Butter bean
Phaseolus lunatus
Season too short
28 May – 4 Jun
3-4 wk
25 Jun
7 wk after
Onion
Allium cepa (Cepa-gruppen)
13 Feb – 13 Mar
14 Mar
8-12 wk
8 May
9 May
0 wk
29 May
3 wk after
Onion (sets)
Allium cepa (Cepa-gruppen)
12 May
29 May
1 wk after
12 May
19 May
1 wk after
Maize
Zea mays
Season too short
11 – 18 Apr
3-4 wk
9 May
0 wk
Swiss Chard
Beta vulgaris (Flavescens-gruppen)
18 – 25 Apr
19 Jun
3-4 wk
16 May
10 Jul
1 wk after
29 May
30 Jun
3 wk after
Carrot
Daucus carota subsp. sativus var. sativus
8 May
25 Jun
0 wk
8 May
15 Jun
0 wk
Palm Kale
Brassica oleracea (Palm Kale-gruppen)
20 Mar – 3 Apr
9 Jun
5-7 wk
8 May
14 Jul
0 wk
8 May
4 Jul
0 wk
Potato
Solanum tuberosum
12 – 26 Apr
13 May
4-6 wk
24 May
10 Jun
2 wk after
24 May
31 May
2 wk after
Ornamental Kale
Brassica oleracea (Ornamental-gruppen)
20 Mar – 3 Apr
10 Jun
5-7 wk
8 May
15 Jul
0 wk
12 May
5 Jul
1 wk after
Pumpkin
Cucurbita pepo
Season too short
25 Apr – 2 May
3-4 wk
23 May
2 wk after
Beetroot
Beta vulgaris (Conditiva-gruppen)
18 – 25 Apr
17 May
3-4 wk
16 May
7 Jun
1 wk after
29 May
3 wk after
Red Cabbage
Brassica oleracea (Red Cabbage-gruppen)
27 Mar – 10 Apr
21 Jun
4-6 wk
8 May
19 Jul
0 wk
Lettuce
Lactuca sativa
10 – 17 Apr
29 Jun
3-4 wk
8 May
20 Jul
0 wk
12 May
10 Jul
1 wk after
Savoy Cabbage
Brassica oleracea (Savoy Cabbage-gruppen)
27 Mar – 10 Apr
21 Jun
4-6 wk
8 May
19 Jul
0 wk
Shallot (bulbs)
Allium cepa (Aggregatum-gruppen)
10 – 24 Apr
17 May
2-4 wk
8 May
31 May
0 wk
8 May
21 May
0 wk
Shallot (sets)
Allium cepa (Aggregatum-gruppen)
12 May
29 May
1 wk after
12 May
19 May
1 wk after
Spinach
Spinacia oleracea
10 – 17 Apr
23 Jul
3-4 wk
8 May
13 Aug
0 wk
4 May
3 Aug
1 wk before
Sweet potato
Ipomoea batatas
9 – 23 Jun
4-6 wk
21 Jul
11 wk after
Garden tomato
Solanum lycopersicum
Season too short
14 – 28 Mar
6-8 wk
9 May
0 wk
Tomatillo
Physalis ixocarpa
Common Bean
Phaseolus vulgaris
Season too short
11 – 25 Apr
2-4 wk
9 May
0 wk
29 May
3 wk after
White Cabbage
Brassica oleracea (White Cabbage-gruppen)
27 Mar – 10 Apr
21 Jun
4-6 wk
8 May
19 Jul
0 wk
Garden pea
Pisum sativum
10 – 17 Apr
14 Jun
3-4 wk
8 May
5 Jul
0 wk
12 May
25 Jun
1 wk after

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
11 – 25 Apr
4-6 wk
23 May
2 wk after
Lemon balm
Melissa officinalis
27 Feb – 13 Mar
10 May
8-10 wk
8 May
5 Jul
0 wk
12 Jun
25 Jun
5 wk after
Dill
Anethum graveolens
12 May
10 Jul
1 wk after
Wild chives
Allium schoenoprasum
13 – 27 Mar
2 Jun
6-8 wk
8 May
14 Jul
0 wk
12 May
4 Jul
1 wk after
Spearmint
Mentha spicata
13 Feb – 13 Mar
19 May
8-12 wk
8 May
14 Jul
0 wk
12 Jun
4 Jul
5 wk after
Coriander
Coriandrum sativum
8 May
30 Jul
0 wk
29 May
20 Jul
3 wk after
Garden sage
Salvia officinalis
7 – 21 Mar
4 May
8-10 wk
16 May
29 Jun
1 wk after
Common thyme
Thymus vulgaris
27 Feb – 13 Mar
9 May
8-10 wk
8 May
4 Jul
0 wk
Oregano
Origanum vulgare
13 – 27 Mar
23 May
6-8 wk
8 May
4 Jul
0 wk
12 Jun
24 Jun
5 wk after
Parsley
Petroselinum crispum
13 – 27 Mar
23 May
6-8 wk
8 May
4 Jul
0 wk
12 May
24 Jun
1 wk after
Rosemary
Salvia rosmarinus
7 Feb – 7 Mar
14 Mar
10-14 wk
16 May
23 May
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
Season too short
25 Apr – 2 May
3-4 wk
23 May
2 wk after
Cornflower
Centaurea cyanus
8 May
14 Jul
0 wk
12 May
4 Jul
1 wk after
Statice
Limonium sinuatum
Greenhouse
28 Feb – 14 Mar
22 Mar
8-10 wk
9 May
17 May
0 wk
Sweet William
Dianthus barbatus
13 – 27 Mar
6-8 wk
8 May
0 wk
24 May
2 wk after
Snow-on-the-mountain
Euphorbia marginata
Greenhouse
14 – 28 Mar
5 Apr
6-8 wk
9 May
17 May
0 wk
18 Jun
6 wk after
Pinnate dahlia
Dahlia × pinnata
Greenhouse
13 – 27 Mar
13 Apr
6-8 wk
8 May
25 May
0 wk
Pinnate dahlia (tubers)
Dahlia × pinnata
Fleece
3 Apr – 1 May
10 Apr
4-8 wk
29 May
3 wk after
29 May
3 wk after
Foxglove
Digitalis purpurea
27 Feb – 13 Mar
8-10 wk
8 May
0 wk
29 May
3 wk after
Busy lizzie
Impatiens walleriana
Greenhouse
28 Feb – 28 Mar
8 May
8-12 wk
23 May
3 Jul
2 wk after
Creeping zinnia
Sanvitalia procumbens
Greenhouse
14 – 28 Mar
15 Apr
6-8 wk
9 May
27 May
0 wk
Hyacinth bean
Dolichos lablab
Season too short
23 Apr – 7 May
4-6 wk
4 Jun
4 wk after
Chinese lantern
Physalis alkekengi
7 – 21 Mar
5 Apr
8-10 wk
16 May
31 May
1 wk after
Love in a mist
Nigella damascena
8 May
20 Jun
0 wk
12 May
10 Jun
1 wk after
Strawflower
Xerochrysum bracteatum
Season too short
14 – 28 Mar
26 Mar
6-8 wk
9 May
0 wk
18 Jun
6 wk after
Purple-top vervain
Verbena bonariensis
21 Feb – 21 Mar
5 Apr
8-12 wk
16 May
31 May
1 wk after
Cardoon
Cynara cardunculus
Greenhouse
14 Feb – 14 Mar
20 Mar
8-12 wk
9 May
15 May
0 wk
Regal-foxtail
Ptilotus nobilis
Season too short
28 Feb – 28 Mar
8-12 wk
23 May
2 wk after
Globe amaranth
Gomphrena globosa
Season too short
28 Mar – 11 Apr
6-8 wk
23 May
2 wk after
Corn poppy
Papaver rhoeas
8 May
5 Jul
0 wk
12 May
25 Jun
1 wk after
Snapdragon
Antirrhinum majus
13 Feb – 13 Mar
30 Apr
8-12 wk
8 May
25 Jun
0 wk
24 May
15 Jun
2 wk after
Flossflower
Ageratum houstonianum
Greenhouse
14 – 28 Mar
1 Apr
8-10 wk
23 May
27 May
2 wk after
Sweet pea
Lathyrus odoratus
13 Mar – 3 Apr
30 May
5-8 wk
8 May
4 Jul
0 wk
Stock
Matthiola incana
13 – 27 Mar
24 May
6-8 wk
8 May
5 Jul
0 wk
29 May
25 Jun
3 wk after
Wormwood
Artemisia absinthium
13 – 27 Mar
3 May
6-8 wk
8 May
14 Jun
0 wk
29 May
4 Jun
3 wk after
Mexican sunflower
Tithonia rotundifolia
Season too short
11 – 25 Apr
4-6 wk
23 May
2 wk after
Garden pansy
Viola × wittrockiana
27 Feb – 13 Mar
19 May
8-10 wk
8 May
14 Jul
0 wk
24 May
4 Jul
2 wk after
Petunia
Petunia
Greenhouse
14 Feb – 14 Mar
22 Mar
8-12 wk
9 May
17 May
0 wk
Sweet Scabious
Scabiosa atropurpurea
21 Mar – 4 Apr
19 Apr
6-8 wk
16 May
31 May
1 wk after
26 Jun
7 wk after
Common zinnia
Zinnia elegans
Greenhouse
28 Mar – 11 Apr
20 Apr
4-6 wk
9 May
18 May
0 wk
Common morning glory
Ipomoea purpurea
Season too short
18 Apr – 2 May
3-5 wk
23 May
2 wk after
Garden cosmos
Cosmos bipinnatus
Greenhouse
28 Mar – 11 Apr
27 Apr
4-6 wk
9 May
25 May
0 wk
29 May
3 wk after
Scarlet milkweed
Asclepias curassavica
Season too short
12 Mar – 9 Apr
8-12 wk
4 Jun
4 wk after
Bee balm
Monarda didyma
13 Feb – 13 Mar
10 Apr
8-12 wk
8 May
5 Jun
0 wk
12 Jun
5 wk after
Yarrow
Achillea millefolium
13 – 27 Mar
3 Apr
6-8 wk
8 May
15 May
0 wk
29 May
3 wk after
Safflower
Carthamus tinctorius
8 May
14 Jun
0 wk
12 May
4 Jun
1 wk after
Iceland poppy
Papaver nudicaule
Season too short
13 – 27 Mar
23 May
6-8 wk
8 May
4 Jul
0 wk
20 Apr
24 Jun
3 wk before
Bishop's flower
Ammi majus
27 Mar – 10 Apr
28 May
4-6 wk
8 May
25 Jun
0 wk
29 May
15 Jun
3 wk after
Drumsticks
Pycnosorus globosus
Season too short
28 Feb – 14 Mar
10-12 wk
23 May
2 wk after
Sunflower
Helianthus annuus
7 – 14 May
22 May
3-4 wk
4 Jun
12 Jun
4 wk after
12 Jun
5 wk after
China aster
Callistephus chinensis
9 – 23 Apr
11 May
6-8 wk
4 Jun
22 Jun
4 wk after
26 Jun
7 wk after
Annual phlox
Phlox drummondii
Greenhouse
13 – 27 Mar
15 Apr
6-8 wk
8 May
27 May
0 wk
29 May
3 wk after
Hollyhock
Alcea rosea
13 – 27 Mar
6-8 wk
8 May
0 wk
29 May
3 wk after
Alpine delphinium
Delphinium elatum
13 Feb – 13 Mar
10 Apr
8-12 wk
8 May
5 Jun
0 wk
12 Jun
5 wk after
African marigold
Tagetes erecta
Greenhouse
14 – 28 Mar
15 Apr
6-8 wk
9 May
27 May
0 wk
Black-eyed Susan
Rudbeckia hirta
21 Mar – 4 Apr
1 May
6-8 wk
16 May
12 Jun
1 wk after
26 Jun
7 wk after
Wood sage
Salvia nemorosa
27 Feb – 13 Mar
31 Mar
8-10 wk
8 May
26 May
0 wk
12 Jun
5 wk after
Black-eyed susan vine
Thunbergia alata
Season too short
14 Mar – 11 Apr
6-10 wk
23 May
2 wk after
California goldenpoppy
Eschscholzia californica
8 May
4 Jul
0 wk
12 May
24 Jun
1 wk after
Painted tongue
Salpiglossis sinuata
26 Mar – 9 Apr
10 Apr
8-10 wk
4 Jun
5 Jun
4 wk after
Water forget-me-not
Myosotis scorpioides
13 – 27 Mar
3 May
6-8 wk
8 May
14 Jun
0 wk
29 May
4 Jun
3 wk after