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Method
Rel. frost
Last spring frost (0°C) 5 May Frost 9 of 10 years · 20 years of data
Frost-free season 122 days 5 May – 4 Sep
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)
17 – 31 Mar
16 Jun
5-7 wk
5 May
21 Jul
0 wk
9 May
11 Jul
1 wk after
Broccoli
Brassica oleracea (Italica-gruppen)
24 Mar – 7 Apr
28 Jun
4-6 wk
5 May
26 Jul
0 wk
9 May
16 Jul
1 wk after
Chili pepper
Capsicum annuum
Season too short
25 Feb – 25 Mar
8-12 wk
20 May
2 wk after
Curly Kale
Brassica oleracea (Curly Kale-gruppen)
17 – 31 Mar
11 Jun
5-7 wk
5 May
16 Jul
0 wk
5 May
6 Jul
0 wk
Garden cucumber
Cucumis sativus
Season too short
22 – 29 Apr
3-4 wk
20 May
2 wk after
Florence Fennel
Foeniculum vulgare
13 – 20 May
19 May
4-5 wk
17 Jun
6 wk after
23 Jun
7 wk after
Butter bean
Phaseolus lunatus
Season too short
25 May – 1 Jun
3-4 wk
22 Jun
7 wk after
Onion
Allium cepa (Cepa-gruppen)
10 Feb – 10 Mar
21 Mar
8-12 wk
5 May
16 May
0 wk
26 May
3 wk after
Onion (sets)
Allium cepa (Cepa-gruppen)
9 May
5 Jun
1 wk after
9 May
26 May
1 wk after
Maize
Zea mays
Season too short
8 – 15 Apr
3-4 wk
6 May
0 wk
Swiss Chard
Beta vulgaris (Flavescens-gruppen)
15 – 22 Apr
24 Jun
3-4 wk
13 May
15 Jul
1 wk after
26 May
5 Jul
3 wk after
Carrot
Daucus carota subsp. sativus var. sativus
5 May
6 Jul
0 wk
5 May
26 Jun
0 wk
Palm Kale
Brassica oleracea (Palm Kale-gruppen)
17 – 31 Mar
11 Jun
5-7 wk
5 May
16 Jul
0 wk
5 May
6 Jul
0 wk
Potato
Solanum tuberosum
9 – 23 Apr
20 May
4-6 wk
21 May
17 Jun
2 wk after
21 May
7 Jun
2 wk after
Ornamental Kale
Brassica oleracea (Ornamental-gruppen)
17 – 31 Mar
21 Jun
5-7 wk
5 May
26 Jul
0 wk
9 May
16 Jul
1 wk after
Pumpkin
Cucurbita pepo
Season too short
22 – 29 Apr
3-4 wk
20 May
2 wk after
Beetroot
Beta vulgaris (Conditiva-gruppen)
15 – 22 Apr
27 May
3-4 wk
13 May
17 Jun
1 wk after
26 May
7 Jun
3 wk after
Red Cabbage
Brassica oleracea (Red Cabbage-gruppen)
24 Mar – 7 Apr
23 Jun
4-6 wk
5 May
21 Jul
0 wk
Lettuce
Lactuca sativa
7 – 14 Apr
10 Jul
3-4 wk
5 May
31 Jul
0 wk
9 May
21 Jul
1 wk after
Savoy Cabbage
Brassica oleracea (Savoy Cabbage-gruppen)
24 Mar – 7 Apr
23 Jun
4-6 wk
5 May
21 Jul
0 wk
Shallot (bulbs)
Allium cepa (Aggregatum-gruppen)
7 – 21 Apr
25 May
2-4 wk
5 May
8 Jun
0 wk
5 May
29 May
0 wk
Shallot (sets)
Allium cepa (Aggregatum-gruppen)
9 May
5 Jun
1 wk after
9 May
26 May
1 wk after
Spinach
Spinacia oleracea
7 – 14 Apr
25 Jul
3-4 wk
5 May
15 Aug
0 wk
1 May
5 Aug
1 wk before
Sweet potato
Ipomoea batatas
6 – 20 Jun
4-6 wk
18 Jul
11 wk after
Garden tomato
Solanum lycopersicum
Season too short
11 – 25 Mar
6-8 wk
6 May
0 wk
Tomatillo
Physalis ixocarpa
Common Bean
Phaseolus vulgaris
Season too short
8 – 22 Apr
2-4 wk
6 May
0 wk
26 May
3 wk after
White Cabbage
Brassica oleracea (White Cabbage-gruppen)
24 Mar – 7 Apr
23 Jun
4-6 wk
5 May
21 Jul
0 wk
Garden pea
Pisum sativum
7 – 14 Apr
25 Jun
3-4 wk
5 May
16 Jul
0 wk
9 May
6 Jul
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
8 – 22 Apr
4-6 wk
20 May
2 wk after
Lemon balm
Melissa officinalis
24 Feb – 10 Mar
21 May
8-10 wk
5 May
16 Jul
0 wk
9 Jun
6 Jul
5 wk after
Dill
Anethum graveolens
9 May
15 Jul
1 wk after
Wild chives
Allium schoenoprasum
10 – 24 Mar
4 Jun
6-8 wk
5 May
16 Jul
0 wk
9 May
6 Jul
1 wk after
Spearmint
Mentha spicata
10 Feb – 10 Mar
21 May
8-12 wk
5 May
16 Jul
0 wk
9 Jun
6 Jul
5 wk after
Coriander
Coriandrum sativum
5 May
4 Aug
0 wk
26 May
25 Jul
3 wk after
Garden sage
Salvia officinalis
4 – 18 Mar
6 May
8-10 wk
13 May
1 Jul
1 wk after
Common thyme
Thymus vulgaris
24 Feb – 10 Mar
11 May
8-10 wk
5 May
6 Jul
0 wk
Oregano
Origanum vulgare
10 – 24 Mar
25 May
6-8 wk
5 May
6 Jul
0 wk
9 Jun
26 Jun
5 wk after
Parsley
Petroselinum crispum
10 – 24 Mar
25 May
6-8 wk
5 May
6 Jul
0 wk
9 May
26 Jun
1 wk after
Rosemary
Salvia rosmarinus
4 Feb – 4 Mar
26 Mar
10-14 wk
13 May
4 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
Season too short
22 – 29 Apr
3-4 wk
20 May
2 wk after
Cornflower
Centaurea cyanus
5 May
16 Jul
0 wk
9 May
6 Jul
1 wk after
Statice
Limonium sinuatum
Greenhouse
25 Feb – 11 Mar
2 Apr
8-10 wk
6 May
28 May
0 wk
Sweet William
Dianthus barbatus
10 – 24 Mar
6-8 wk
5 May
0 wk
21 May
2 wk after
Snow-on-the-mountain
Euphorbia marginata
Greenhouse
11 – 25 Mar
16 Apr
6-8 wk
6 May
28 May
0 wk
15 Jun
6 wk after
Pinnate dahlia
Dahlia × pinnata
Fleece
18 Mar – 1 Apr
8 Apr
6-8 wk
13 May
20 May
1 wk after
Pinnate dahlia (tubers)
Dahlia × pinnata
Fleece
31 Mar – 28 Apr
22 Apr
4-8 wk
26 May
3 wk after
26 May
3 wk after
Foxglove
Digitalis purpurea
24 Feb – 10 Mar
8-10 wk
5 May
0 wk
26 May
3 wk after
Busy lizzie
Impatiens walleriana
Greenhouse
25 Feb – 25 Mar
20 May
8-12 wk
20 May
15 Jul
2 wk after
Creeping zinnia
Sanvitalia procumbens
Fleece
25 Mar – 8 Apr
6 Apr
6-8 wk
20 May
2 wk after
Hyacinth bean
Dolichos lablab
Season too short
20 Apr – 4 May
4-6 wk
1 Jun
4 wk after
Chinese lantern
Physalis alkekengi
4 – 18 Mar
10 Apr
8-10 wk
13 May
5 Jun
1 wk after
Love in a mist
Nigella damascena
5 May
1 Jul
0 wk
9 May
21 Jun
1 wk after
Strawflower
Xerochrysum bracteatum
Greenhouse
11 – 25 Mar
6 Apr
6-8 wk
6 May
18 May
0 wk
15 Jun
6 wk after
Purple-top vervain
Verbena bonariensis
18 Feb – 18 Mar
10 Apr
8-12 wk
13 May
5 Jun
1 wk after
Cardoon
Cynara cardunculus
Fleece
25 Feb – 25 Mar
22 Mar
8-12 wk
20 May
2 wk after
Regal-foxtail
Ptilotus nobilis
Season too short
25 Feb – 25 Mar
8-12 wk
20 May
2 wk after
Globe amaranth
Gomphrena globosa
Season too short
25 Mar – 8 Apr
6-8 wk
20 May
2 wk after
Corn poppy
Papaver rhoeas
5 May
16 Jul
0 wk
9 May
6 Jul
1 wk after
Snapdragon
Antirrhinum majus
10 Feb – 10 Mar
11 May
8-12 wk
5 May
6 Jul
0 wk
21 May
26 Jun
2 wk after
Flossflower
Ageratum houstonianum
Greenhouse
11 – 25 Mar
12 Apr
8-10 wk
20 May
7 Jun
2 wk after
Sweet pea
Lathyrus odoratus
10 – 31 Mar
1 Jun
5-8 wk
5 May
6 Jul
0 wk
Stock
Matthiola incana
10 – 24 Mar
4 Jun
6-8 wk
5 May
16 Jul
0 wk
26 May
6 Jul
3 wk after
Wormwood
Artemisia absinthium
10 – 24 Mar
5 May
6-8 wk
5 May
16 Jun
0 wk
26 May
6 Jun
3 wk after
Mexican sunflower
Tithonia rotundifolia
Season too short
8 – 22 Apr
4-6 wk
20 May
2 wk after
Garden pansy
Viola × wittrockiana
24 Feb – 10 Mar
21 May
8-10 wk
5 May
16 Jul
0 wk
21 May
6 Jul
2 wk after
Petunia
Petunia
Greenhouse
11 Feb – 11 Mar
2 Apr
8-12 wk
6 May
28 May
0 wk
Sweet Scabious
Scabiosa atropurpurea
18 Mar – 1 Apr
24 Apr
6-8 wk
13 May
5 Jun
1 wk after
23 Jun
7 wk after
Common zinnia
Zinnia elegans
Greenhouse
25 Mar – 8 Apr
2 May
4-6 wk
6 May
30 May
0 wk
Common morning glory
Ipomoea purpurea
Season too short
15 – 29 Apr
3-5 wk
20 May
2 wk after
Garden cosmos
Cosmos bipinnatus
Fleece
8 – 22 Apr
22 Apr
4-6 wk
20 May
20 May
2 wk after
9 Jun
5 wk after
Scarlet milkweed
Asclepias curassavica
Season too short
9 Mar – 6 Apr
8-12 wk
1 Jun
4 wk after
Bee balm
Monarda didyma
10 Feb – 10 Mar
21 Apr
8-12 wk
5 May
16 Jun
0 wk
9 Jun
5 wk after
Yarrow
Achillea millefolium
10 – 24 Mar
5 Apr
6-8 wk
5 May
17 May
0 wk
26 May
3 wk after
Safflower
Carthamus tinctorius
5 May
16 Jun
0 wk
9 May
6 Jun
1 wk after
Iceland poppy
Papaver nudicaule
Season too short
10 – 24 Mar
25 May
6-8 wk
5 May
6 Jul
0 wk
17 Apr
26 Jun
3 wk before
Bishop's flower
Ammi majus
24 Mar – 7 Apr
8 Jun
4-6 wk
5 May
6 Jul
0 wk
26 May
26 Jun
3 wk after
Drumsticks
Pycnosorus globosus
Season too short
25 Feb – 11 Mar
10-12 wk
20 May
2 wk after
Sunflower
Helianthus annuus
4 – 11 May
3 Jun
3-4 wk
1 Jun
24 Jun
4 wk after
9 Jun
14 Jun
5 wk after
China aster
Callistephus chinensis
6 – 20 Apr
23 May
6-8 wk
1 Jun
4 Jul
4 wk after
23 Jun
24 Jun
7 wk after
Annual phlox
Phlox drummondii
Fleece
11 – 25 Mar
6 Apr
6-8 wk
6 May
18 May
0 wk
9 Jun
5 wk after
Hollyhock
Alcea rosea
10 – 24 Mar
6-8 wk
5 May
0 wk
26 May
3 wk after
Alpine delphinium
Delphinium elatum
10 Feb – 10 Mar
21 Apr
8-12 wk
5 May
16 Jun
0 wk
9 Jun
5 wk after
African marigold
Tagetes erecta
Fleece
25 Mar – 8 Apr
6 Apr
6-8 wk
20 May
2 wk after
Black-eyed Susan
Rudbeckia hirta
18 Mar – 1 Apr
13 May
6-8 wk
13 May
24 Jun
1 wk after
23 Jun
7 wk after
Wood sage
Salvia nemorosa
24 Feb – 10 Mar
11 Apr
8-10 wk
5 May
6 Jun
0 wk
9 Jun
5 wk after
Black-eyed susan vine
Thunbergia alata
Season too short
11 Mar – 8 Apr
6-10 wk
20 May
2 wk after
California goldenpoppy
Eschscholzia californica
5 May
5 Jul
0 wk
9 May
25 Jun
1 wk after
Painted tongue
Salpiglossis sinuata
23 Mar – 6 Apr
21 Apr
8-10 wk
1 Jun
16 Jun
4 wk after
Water forget-me-not
Myosotis scorpioides
10 – 24 Mar
5 May
6-8 wk
5 May
16 Jun
0 wk
26 May
6 Jun
3 wk after