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Method
Rel. frost
Last spring frost (0°C) 7 May Frost 9 of 10 years · 20 years of data
Frost-free season 100 days 7 May – 15 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)
19 Mar – 2 Apr
13 Jun
5-7 wk
7 May
18 Jul
0 wk
8 May
8 Jul
0 wk
Broccoli
Brassica oleracea (Italica-gruppen)
26 Mar – 9 Apr
25 Jun
4-6 wk
7 May
23 Jul
0 wk
8 May
13 Jul
0 wk
Chili pepper
Capsicum annuum
Season too short
22 Feb – 22 Mar
8-12 wk
17 May
1 wk after
Curly Kale
Brassica oleracea (Curly Kale-gruppen)
19 Mar – 2 Apr
8 Jun
5-7 wk
7 May
13 Jul
0 wk
7 May
3 Jul
0 wk
Garden cucumber
Cucumis sativus
Season too short
19 – 26 Apr
3-4 wk
17 May
1 wk after
Florence Fennel
Foeniculum vulgare
Fleece
22 – 29 Apr
27 May
4-5 wk
27 May
24 Jun
3 wk after
1 Jun
14 Jun
4 wk after
Butter bean
Phaseolus lunatus
Season too short
20 – 27 May
3-4 wk
17 Jun
6 wk after
Onion
Allium cepa (Cepa-gruppen)
12 Feb – 12 Mar
15 Mar
8-12 wk
7 May
10 May
0 wk
20 May
2 wk after
Onion (sets)
Allium cepa (Cepa-gruppen)
8 May
30 May
0 wk
8 May
20 May
0 wk
Maize
Zea mays
Season too short
11 – 18 Apr
3-4 wk
9 May
0 wk
Swiss Chard
Beta vulgaris (Flavescens-gruppen)
14 – 21 Apr
23 Jun
3-4 wk
12 May
14 Jul
1 wk after
20 May
4 Jul
2 wk after
Carrot
Daucus carota subsp. sativus var. sativus
7 May
3 Jul
0 wk
7 May
23 Jun
0 wk
Palm Kale
Brassica oleracea (Palm Kale-gruppen)
19 Mar – 2 Apr
8 Jun
5-7 wk
7 May
13 Jul
0 wk
7 May
3 Jul
0 wk
Potato
Solanum tuberosum
5 – 19 Apr
12 May
4-6 wk
17 May
9 Jun
1 wk after
17 May
30 May
1 wk after
Ornamental Kale
Brassica oleracea (Ornamental-gruppen)
19 Mar – 2 Apr
18 Jun
5-7 wk
7 May
23 Jul
0 wk
8 May
13 Jul
0 wk
Pumpkin
Cucurbita pepo
Season too short
19 – 26 Apr
3-4 wk
17 May
1 wk after
Beetroot
Beta vulgaris (Conditiva-gruppen)
14 – 21 Apr
17 May
3-4 wk
12 May
7 Jun
1 wk after
20 May
28 May
2 wk after
Red Cabbage
Brassica oleracea (Red Cabbage-gruppen)
26 Mar – 9 Apr
20 Jun
4-6 wk
7 May
18 Jul
0 wk
Lettuce
Lactuca sativa
9 – 16 Apr
7 Jul
3-4 wk
7 May
28 Jul
0 wk
8 May
18 Jul
0 wk
Savoy Cabbage
Brassica oleracea (Savoy Cabbage-gruppen)
26 Mar – 9 Apr
20 Jun
4-6 wk
7 May
18 Jul
0 wk
Shallot (bulbs)
Allium cepa (Aggregatum-gruppen)
9 – 23 Apr
19 May
2-4 wk
7 May
2 Jun
0 wk
7 May
23 May
0 wk
Shallot (sets)
Allium cepa (Aggregatum-gruppen)
8 May
30 May
0 wk
8 May
20 May
0 wk
Spinach
Spinacia oleracea
9 – 16 Apr
22 Jul
3-4 wk
7 May
12 Aug
0 wk
4 May
2 Aug
0 wk
Sweet potato
Ipomoea batatas
1 – 15 Jun
4-6 wk
13 Jul
10 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
11 Apr
2-4 wk
9 May
0 wk
20 May
2 wk after
White Cabbage
Brassica oleracea (White Cabbage-gruppen)
26 Mar – 9 Apr
20 Jun
4-6 wk
7 May
18 Jul
0 wk
Garden pea
Pisum sativum
9 – 16 Apr
22 Jun
3-4 wk
7 May
13 Jul
0 wk
8 May
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
5 – 19 Apr
4-6 wk
17 May
1 wk after
Lemon balm
Melissa officinalis
26 Feb – 12 Mar
18 May
8-10 wk
7 May
13 Jul
0 wk
1 Jun
3 Jul
4 wk after
Dill
Anethum graveolens
8 May
14 Jul
0 wk
Wild chives
Allium schoenoprasum
12 – 26 Mar
1 Jun
6-8 wk
7 May
13 Jul
0 wk
8 May
3 Jul
0 wk
Spearmint
Mentha spicata
12 Feb – 12 Mar
18 May
8-12 wk
7 May
13 Jul
0 wk
1 Jun
3 Jul
4 wk after
Coriander
Coriandrum sativum
7 May
3 Aug
0 wk
20 May
24 Jul
2 wk after
Garden sage
Salvia officinalis
3 – 17 Mar
3 May
8-10 wk
12 May
28 Jun
1 wk after
Common thyme
Thymus vulgaris
26 Feb – 12 Mar
8 May
8-10 wk
7 May
3 Jul
0 wk
Oregano
Origanum vulgare
12 – 26 Mar
22 May
6-8 wk
7 May
3 Jul
0 wk
1 Jun
23 Jun
4 wk after
Parsley
Petroselinum crispum
12 – 26 Mar
22 May
6-8 wk
7 May
3 Jul
0 wk
8 May
23 Jun
0 wk
Rosemary
Salvia rosmarinus
Fleece
29 Jan – 26 Feb
30 Mar
10-14 wk
7 May
8 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
19 – 26 Apr
3-4 wk
17 May
1 wk after
Cornflower
Centaurea cyanus
7 May
13 Jul
0 wk
8 May
3 Jul
0 wk
Statice
Limonium sinuatum
Season too short
28 Feb – 14 Mar
10 Mar
8-10 wk
9 May
0 wk
Sweet William
Dianthus barbatus
12 – 26 Mar
6-8 wk
7 May
0 wk
17 May
1 wk after
Snow-on-the-mountain
Euphorbia marginata
Season too short
14 – 28 Mar
24 Mar
6-8 wk
9 May
0 wk
8 Jun
5 wk after
Pinnate dahlia
Dahlia × pinnata
Greenhouse
12 – 26 Mar
28 Mar
6-8 wk
7 May
9 May
0 wk
Pinnate dahlia (tubers)
Dahlia × pinnata
Fleece
25 Mar – 22 Apr
7 Apr
4-8 wk
20 May
2 wk after
20 May
2 wk after
Foxglove
Digitalis purpurea
26 Feb – 12 Mar
8-10 wk
7 May
0 wk
20 May
2 wk after
Busy lizzie
Impatiens walleriana
Greenhouse
22 Feb – 22 Mar
5 May
8-12 wk
17 May
30 Jun
1 wk after
Creeping zinnia
Sanvitalia procumbens
Greenhouse
14 – 28 Mar
3 Apr
6-8 wk
9 May
15 May
0 wk
Hyacinth bean
Dolichos lablab
Season too short
15 – 29 Apr
4-6 wk
27 May
3 wk after
Chinese lantern
Physalis alkekengi
3 – 17 Mar
9 Apr
8-10 wk
12 May
4 Jun
1 wk after
Love in a mist
Nigella damascena
7 May
28 Jun
0 wk
8 May
18 Jun
0 wk
Strawflower
Xerochrysum bracteatum
Season too short
14 – 28 Mar
14 Mar
6-8 wk
9 May
0 wk
8 Jun
5 wk after
Purple-top vervain
Verbena bonariensis
17 Feb – 17 Mar
9 Apr
8-12 wk
12 May
4 Jun
1 wk after
Cardoon
Cynara cardunculus
Fleece
22 Feb – 22 Mar
19 Mar
8-12 wk
17 May
1 wk after
Regal-foxtail
Ptilotus nobilis
Season too short
22 Feb – 22 Mar
8-12 wk
17 May
1 wk after
Globe amaranth
Gomphrena globosa
Season too short
22 Mar – 5 Apr
6-8 wk
17 May
1 wk after
Corn poppy
Papaver rhoeas
7 May
13 Jul
0 wk
8 May
3 Jul
0 wk
Snapdragon
Antirrhinum majus
12 Feb – 12 Mar
8 May
8-12 wk
7 May
3 Jul
0 wk
17 May
23 Jun
1 wk after
Flossflower
Ageratum houstonianum
Season too short
8 – 22 Mar
20 Mar
8-10 wk
17 May
1 wk after
Sweet pea
Lathyrus odoratus
12 Mar – 2 Apr
29 May
5-8 wk
7 May
3 Jul
0 wk
Stock
Matthiola incana
12 – 26 Mar
1 Jun
6-8 wk
7 May
13 Jul
0 wk
20 May
3 Jul
2 wk after
Wormwood
Artemisia absinthium
12 – 26 Mar
2 May
6-8 wk
7 May
13 Jun
0 wk
20 May
3 Jun
2 wk after
Mexican sunflower
Tithonia rotundifolia
Season too short
5 – 19 Apr
4-6 wk
17 May
1 wk after
Garden pansy
Viola × wittrockiana
26 Feb – 12 Mar
18 May
8-10 wk
7 May
13 Jul
0 wk
17 May
3 Jul
1 wk after
Petunia
Petunia
Season too short
14 Feb – 14 Mar
10 Mar
8-12 wk
9 May
0 wk
Sweet Scabious
Scabiosa atropurpurea
17 – 31 Mar
23 Apr
6-8 wk
12 May
4 Jun
1 wk after
19 Jun
6 wk after
Common zinnia
Zinnia elegans
Greenhouse
28 Mar – 11 Apr
17 Apr
4-6 wk
9 May
15 May
0 wk
Common morning glory
Ipomoea purpurea
Season too short
12 – 26 Apr
3-5 wk
17 May
1 wk after
Garden cosmos
Cosmos bipinnatus
Season too short
28 Mar – 11 Apr
11 Apr
4-6 wk
9 May
9 May
0 wk
20 May
2 wk after
Scarlet milkweed
Asclepias curassavica
Season too short
4 Mar – 1 Apr
10 Mar
8-12 wk
27 May
3 wk after
Bee balm
Monarda didyma
12 Feb – 12 Mar
18 Apr
8-12 wk
7 May
13 Jun
0 wk
1 Jun
3 Jun
4 wk after
Yarrow
Achillea millefolium
12 – 26 Mar
2 Apr
6-8 wk
7 May
14 May
0 wk
20 May
2 wk after
Safflower
Carthamus tinctorius
7 May
13 Jun
0 wk
8 May
3 Jun
0 wk
Iceland poppy
Papaver nudicaule
Season too short
12 – 26 Mar
22 May
6-8 wk
7 May
3 Jul
0 wk
21 Apr
23 Jun
2 wk before
Bishop's flower
Ammi majus
26 Mar – 9 Apr
5 Jun
4-6 wk
7 May
3 Jul
0 wk
20 May
23 Jun
2 wk after
Drumsticks
Pycnosorus globosus
Season too short
22 Feb – 8 Mar
10-12 wk
17 May
1 wk after
Sunflower
Helianthus annuus
Fleece
19 – 26 Apr
7 Jun
3-4 wk
17 May
28 Jun
1 wk after
20 May
18 Jun
2 wk after
China aster
Callistephus chinensis
1 – 15 Apr
26 Apr
6-8 wk
27 May
7 Jun
3 wk after
19 Jun
6 wk after
Annual phlox
Phlox drummondii
Greenhouse
12 – 26 Mar
3 Apr
6-8 wk
7 May
15 May
0 wk
20 May
2 wk after
Hollyhock
Alcea rosea
12 – 26 Mar
6-8 wk
7 May
0 wk
20 May
2 wk after
Alpine delphinium
Delphinium elatum
12 Feb – 12 Mar
18 Apr
8-12 wk
7 May
13 Jun
0 wk
1 Jun
3 Jun
4 wk after
African marigold
Tagetes erecta
Greenhouse
14 – 28 Mar
3 Apr
6-8 wk
9 May
15 May
0 wk
Black-eyed Susan
Rudbeckia hirta
17 – 31 Mar
16 Apr
6-8 wk
12 May
28 May
1 wk after
19 Jun
6 wk after
Wood sage
Salvia nemorosa
26 Feb – 12 Mar
8 Apr
8-10 wk
7 May
3 Jun
0 wk
1 Jun
4 wk after
Black-eyed susan vine
Thunbergia alata
Season too short
8 Mar – 5 Apr
6-10 wk
17 May
1 wk after
California goldenpoppy
Eschscholzia californica
7 May
8 Jul
0 wk
8 May
28 Jun
0 wk
Painted tongue
Salpiglossis sinuata
Fleece
8 – 22 Mar
29 Apr
8-10 wk
17 May
24 Jun
1 wk after
Water forget-me-not
Myosotis scorpioides
12 – 26 Mar
2 May
6-8 wk
7 May
13 Jun
0 wk
20 May
3 Jun
2 wk after