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Method
Rel. frost
Last spring frost (0°C) 28 Apr Frost 9 of 10 years · 20 years of data
Frost-free season 133 days 28 Apr – 8 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)
10 – 24 Mar
18 Jun
5-7 wk
28 Apr
23 Jul
0 wk
21 Apr
13 Jul
1 wk before
Broccoli
Brassica oleracea (Italica-gruppen)
17 – 31 Mar
30 Jun
4-6 wk
28 Apr
28 Jul
0 wk
21 Apr
18 Jul
1 wk before
Chili pepper
Capsicum annuum
Season too short
16 Feb – 16 Mar
8-12 wk
11 May
2 wk after
Curly Kale
Brassica oleracea (Curly Kale-gruppen)
10 – 24 Mar
13 Jun
5-7 wk
28 Apr
18 Jul
0 wk
16 Apr
8 Jul
2 wk before
Garden cucumber
Cucumis sativus
Season too short
13 – 20 Apr
3-4 wk
11 May
2 wk after
Florence Fennel
Foeniculum vulgare
29 Apr – 6 May
22 May
4-5 wk
3 Jun
19 Jun
5 wk after
3 Jun
9 Jun
5 wk after
Butter bean
Phaseolus lunatus
Season too short
16 – 23 May
3-4 wk
13 Jun
7 wk after
Onion
Allium cepa (Cepa-gruppen)
3 Feb – 3 Mar
1 Apr
8-12 wk
28 Apr
27 May
0 wk
8 May
17 May
1 wk after
Onion (sets)
Allium cepa (Cepa-gruppen)
21 Apr
16 Jun
1 wk before
21 Apr
6 Jun
1 wk before
Maize
Zea mays
Season too short
31 Mar – 7 Apr
3-4 wk
28 Apr
0 wk
Swiss Chard
Beta vulgaris (Flavescens-gruppen)
7 – 14 Apr
3 Jul
3-4 wk
5 May
24 Jul
1 wk after
8 May
14 Jul
1 wk after
Carrot
Daucus carota subsp. sativus var. sativus
28 Apr
8 Jul
0 wk
16 Apr
28 Jun
2 wk before
Palm Kale
Brassica oleracea (Palm Kale-gruppen)
10 – 24 Mar
13 Jun
5-7 wk
28 Apr
18 Jul
0 wk
16 Apr
8 Jul
2 wk before
Potato
Solanum tuberosum
22 Mar – 5 Apr
29 May
4-6 wk
3 May
26 Jun
1 wk after
3 May
16 Jun
1 wk after
Ornamental Kale
Brassica oleracea (Ornamental-gruppen)
10 – 24 Mar
23 Jun
5-7 wk
28 Apr
28 Jul
0 wk
21 Apr
18 Jul
1 wk before
Pumpkin
Cucurbita pepo
Greenhouse
13 – 20 Apr
25 May
3-4 wk
11 May
15 Jun
2 wk after
Beetroot
Beta vulgaris (Conditiva-gruppen)
7 – 14 Apr
9 Jun
3-4 wk
5 May
30 Jun
1 wk after
8 May
20 Jun
1 wk after
Red Cabbage
Brassica oleracea (Red Cabbage-gruppen)
17 – 31 Mar
25 Jun
4-6 wk
28 Apr
23 Jul
0 wk
Lettuce
Lactuca sativa
31 Mar – 7 Apr
12 Jul
3-4 wk
28 Apr
2 Aug
0 wk
21 Apr
23 Jul
1 wk before
Savoy Cabbage
Brassica oleracea (Savoy Cabbage-gruppen)
17 – 31 Mar
25 Jun
4-6 wk
28 Apr
23 Jul
0 wk
Shallot (bulbs)
Allium cepa (Aggregatum-gruppen)
19 Mar – 2 Apr
3 Jun
2-4 wk
16 Apr
17 Jun
2 wk before
16 Apr
7 Jun
2 wk before
Shallot (sets)
Allium cepa (Aggregatum-gruppen)
21 Apr
16 Jun
1 wk before
21 Apr
6 Jun
1 wk before
Spinach
Spinacia oleracea
31 Mar – 7 Apr
27 Jul
3-4 wk
28 Apr
17 Aug
0 wk
10 Apr
7 Aug
3 wk before
Sweet potato
Ipomoea batatas
25 May – 8 Jun
4-6 wk
6 Jul
10 wk after
Garden tomato
Solanum lycopersicum
Season too short
3 – 17 Mar
6-8 wk
28 Apr
0 wk
Tomatillo
Physalis ixocarpa
Common Bean
Phaseolus vulgaris
Greenhouse
31 Mar – 14 Apr
27 May
2-4 wk
28 Apr
10 Jun
0 wk
8 May
31 May
1 wk after
White Cabbage
Brassica oleracea (White Cabbage-gruppen)
17 – 31 Mar
25 Jun
4-6 wk
28 Apr
23 Jul
0 wk
Garden pea
Pisum sativum
31 Mar – 7 Apr
27 Jun
3-4 wk
28 Apr
18 Jul
0 wk
21 Apr
8 Jul
1 wk before

Herbs

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