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Method
Rel. frost
Last spring frost (0°C) 30 Apr Frost 9 of 10 years · 20 years of data
Frost-free season 128 days 30 Apr – 5 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)
12 – 26 Mar
21 Jun
5-7 wk
30 Apr
26 Jul
0 wk
24 Apr
16 Jul
1 wk before
Broccoli
Brassica oleracea (Italica-gruppen)
19 Mar – 2 Apr
3 Jul
4-6 wk
30 Apr
31 Jul
0 wk
24 Apr
21 Jul
1 wk before
Chili pepper
Capsicum annuum
Season too short
18 Feb – 18 Mar
8-12 wk
13 May
2 wk after
Curly Kale
Brassica oleracea (Curly Kale-gruppen)
12 – 26 Mar
16 Jun
5-7 wk
30 Apr
21 Jul
0 wk
17 Apr
11 Jul
2 wk before
Garden cucumber
Cucumis sativus
Greenhouse
15 – 22 Apr
18 Apr
3-4 wk
13 May
2 wk after
Florence Fennel
Foeniculum vulgare
1 – 8 May
28 May
4-5 wk
5 Jun
25 Jun
5 wk after
10 Jun
15 Jun
6 wk after
Butter bean
Phaseolus lunatus
Season too short
18 – 25 May
3-4 wk
15 Jun
7 wk after
Onion
Allium cepa (Cepa-gruppen)
5 Feb – 5 Mar
27 Mar
8-12 wk
30 Apr
22 May
0 wk
13 May
2 wk after
Onion (sets)
Allium cepa (Cepa-gruppen)
24 Apr
11 Jun
1 wk before
24 Apr
1 Jun
1 wk before
Maize
Zea mays
Greenhouse
2 – 9 Apr
8 Apr
3-4 wk
30 Apr
0 wk
Swiss Chard
Beta vulgaris (Flavescens-gruppen)
9 – 16 Apr
2 Jul
3-4 wk
7 May
23 Jul
1 wk after
13 May
13 Jul
2 wk after
Carrot
Daucus carota subsp. sativus var. sativus
30 Apr
11 Jul
0 wk
17 Apr
1 Jul
2 wk before
Palm Kale
Brassica oleracea (Palm Kale-gruppen)
12 – 26 Mar
16 Jun
5-7 wk
30 Apr
21 Jul
0 wk
17 Apr
11 Jul
2 wk before
Potato
Solanum tuberosum
24 Mar – 7 Apr
2 Jun
4-6 wk
5 May
30 Jun
1 wk after
5 May
20 Jun
1 wk after
Ornamental Kale
Brassica oleracea (Ornamental-gruppen)
12 – 26 Mar
26 Jun
5-7 wk
30 Apr
31 Jul
0 wk
24 Apr
21 Jul
1 wk before
Pumpkin
Cucurbita pepo
Fleece
24 Apr – 1 May
3-4 wk
22 May
3 wk after
Beetroot
Beta vulgaris (Conditiva-gruppen)
9 – 16 Apr
15 Jun
3-4 wk
7 May
6 Jul
1 wk after
13 May
26 Jun
2 wk after
Red Cabbage
Brassica oleracea (Red Cabbage-gruppen)
19 Mar – 2 Apr
28 Jun
4-6 wk
30 Apr
26 Jul
0 wk
Lettuce
Lactuca sativa
2 – 9 Apr
15 Jul
3-4 wk
30 Apr
5 Aug
0 wk
24 Apr
26 Jul
1 wk before
Savoy Cabbage
Brassica oleracea (Savoy Cabbage-gruppen)
19 Mar – 2 Apr
28 Jun
4-6 wk
30 Apr
26 Jul
0 wk
Shallot (bulbs)
Allium cepa (Aggregatum-gruppen)
20 Mar – 3 Apr
3 Jun
2-4 wk
17 Apr
17 Jun
2 wk before
17 Apr
7 Jun
2 wk before
Shallot (sets)
Allium cepa (Aggregatum-gruppen)
24 Apr
11 Jun
1 wk before
24 Apr
1 Jun
1 wk before
Spinach
Spinacia oleracea
2 – 9 Apr
30 Jul
3-4 wk
30 Apr
20 Aug
0 wk
10 Apr
10 Aug
3 wk before
Sweet potato
Ipomoea batatas
1 – 15 Jun
4-6 wk
13 Jul
11 wk after
Garden tomato
Solanum lycopersicum
Greenhouse
5 – 19 Mar
18 Mar
6-8 wk
30 Apr
0 wk
Tomatillo
Physalis ixocarpa
Common Bean
Phaseolus vulgaris
Fleece
15 – 29 Apr
25 Apr
2-4 wk
13 May
2 wk after
26 May
4 wk after
White Cabbage
Brassica oleracea (White Cabbage-gruppen)
19 Mar – 2 Apr
28 Jun
4-6 wk
30 Apr
26 Jul
0 wk
Garden pea
Pisum sativum
2 – 9 Apr
30 Jun
3-4 wk
30 Apr
21 Jul
0 wk
24 Apr
11 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
1 – 15 Apr
25 Apr
4-6 wk
13 May
23 May
2 wk after
Lemon balm
Melissa officinalis
19 Feb – 5 Mar
26 May
8-10 wk
30 Apr
21 Jul
0 wk
26 May
11 Jul
4 wk after
Dill
Anethum graveolens
24 Apr
23 Jul
1 wk before
Wild chives
Allium schoenoprasum
5 – 19 Mar
9 Jun
6-8 wk
30 Apr
21 Jul
0 wk
24 Apr
11 Jul
1 wk before
Spearmint
Mentha spicata
5 Feb – 5 Mar
26 May
8-12 wk
30 Apr
21 Jul
0 wk
26 May
11 Jul
4 wk after
Coriander
Coriandrum sativum
30 Apr
12 Aug
0 wk
13 May
2 Aug
2 wk after
Garden sage
Salvia officinalis
26 Feb – 12 Mar
11 May
8-10 wk
7 May
6 Jul
1 wk after
Common thyme
Thymus vulgaris
19 Feb – 5 Mar
16 May
8-10 wk
30 Apr
11 Jul
0 wk
Oregano
Origanum vulgare
5 – 19 Mar
30 May
6-8 wk
30 Apr
11 Jul
0 wk
26 May
1 Jul
4 wk after
Parsley
Petroselinum crispum
5 – 19 Mar
30 May
6-8 wk
30 Apr
11 Jul
0 wk
24 Apr
1 Jul
1 wk before
Rosemary
Salvia rosmarinus
29 Jan – 26 Feb
2 Apr
10-14 wk
7 May
11 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
15 – 22 Apr
2 May
3-4 wk
13 May
23 May
2 wk after
Cornflower
Centaurea cyanus
30 Apr
21 Jul
0 wk
24 Apr
11 Jul
1 wk before
Statice
Limonium sinuatum
13 – 27 Mar
16 Mar
8-10 wk
22 May
3 wk after
Sweet William
Dianthus barbatus
5 – 19 Mar
6-8 wk
30 Apr
0 wk
5 May
1 wk after
Snow-on-the-mountain
Euphorbia marginata
27 Mar – 10 Apr
30 Mar
6-8 wk
22 May
3 wk after
13 Jul
11 wk after
Pinnate dahlia
Dahlia × pinnata
20 Mar – 3 Apr
1 Apr
6-8 wk
15 May
2 wk after
Pinnate dahlia (tubers)
Dahlia × pinnata
31 Mar – 28 Apr
15 Apr
4-8 wk
26 May
4 wk after
26 May
4 wk after
Foxglove
Digitalis purpurea
19 Feb – 5 Mar
8-10 wk
30 Apr
0 wk
13 May
2 wk after
Busy lizzie
Impatiens walleriana
13 Mar – 10 Apr
19 Apr
8-12 wk
5 Jun
14 Jun
5 wk after
Creeping zinnia
Sanvitalia procumbens
27 Mar – 10 Apr
9 Apr
6-8 wk
22 May
3 wk after
Hyacinth bean
Dolichos lablab
Season too short
10 – 24 Apr
4-6 wk
22 May
3 wk after
Chinese lantern
Physalis alkekengi
26 Feb – 12 Mar
18 Apr
8-10 wk
7 May
13 Jun
1 wk after
Love in a mist
Nigella damascena
30 Apr
6 Jul
0 wk
24 Apr
26 Jun
1 wk before
Strawflower
Xerochrysum bracteatum
Fleece
18 Mar – 1 Apr
4 Apr
6-8 wk
13 May
16 May
2 wk after
15 Jun
7 wk after
Purple-top vervain
Verbena bonariensis
12 Feb – 12 Mar
18 Apr
8-12 wk
7 May
13 Jun
1 wk after
Cardoon
Cynara cardunculus
27 Feb – 27 Mar
19 Mar
8-12 wk
22 May
3 wk after
Regal-foxtail
Ptilotus nobilis
Greenhouse
18 Feb – 18 Mar
18 Mar
8-12 wk
13 May
13 May
2 wk after
Globe amaranth
Gomphrena globosa
Greenhouse
18 Mar – 1 Apr
1 Apr
6-8 wk
13 May
13 May
2 wk after
Corn poppy
Papaver rhoeas
30 Apr
21 Jul
0 wk
24 Apr
11 Jul
1 wk before
Snapdragon
Antirrhinum majus
5 Feb – 5 Mar
16 May
8-12 wk
30 Apr
11 Jul
0 wk
5 May
1 Jul
1 wk after
Flossflower
Ageratum houstonianum
Fleece
13 – 27 Mar
10 Apr
8-10 wk
22 May
5 Jun
3 wk after
Sweet pea
Lathyrus odoratus
5 – 26 Mar
6 Jun
5-8 wk
30 Apr
11 Jul
0 wk
Stock
Matthiola incana
5 – 19 Mar
9 Jun
6-8 wk
30 Apr
21 Jul
0 wk
13 May
11 Jul
2 wk after
Wormwood
Artemisia absinthium
5 – 19 Mar
10 May
6-8 wk
30 Apr
21 Jun
0 wk
13 May
11 Jun
2 wk after
Mexican sunflower
Tithonia rotundifolia
Greenhouse
1 – 15 Apr
10 Apr
4-6 wk
13 May
2 wk after
Garden pansy
Viola × wittrockiana
19 Feb – 5 Mar
26 May
8-10 wk
30 Apr
21 Jul
0 wk
5 May
11 Jul
1 wk after
Petunia
Petunia
27 Feb – 27 Mar
16 Mar
8-12 wk
22 May
3 wk after
Sweet Scabious
Scabiosa atropurpurea
12 – 26 Mar
2 May
6-8 wk
7 May
13 Jun
1 wk after
10 Jun
6 wk after
Common zinnia
Zinnia elegans
Fleece
1 – 15 Apr
25 Apr
4-6 wk
13 May
23 May
2 wk after
Common morning glory
Ipomoea purpurea
Greenhouse
8 – 22 Apr
2 May
3-5 wk
13 May
23 May
2 wk after
Garden cosmos
Cosmos bipinnatus
10 – 24 Apr
15 Apr
4-6 wk
22 May
3 wk after
10 Jun
6 wk after
Scarlet milkweed
Asclepias curassavica
Greenhouse
27 Feb – 27 Mar
17 Apr
8-12 wk
22 May
12 Jun
3 wk after
Bee balm
Monarda didyma
5 Feb – 5 Mar
26 Apr
8-12 wk
30 Apr
21 Jun
0 wk
26 May
11 Jun
4 wk after
Yarrow
Achillea millefolium
5 – 19 Mar
10 Apr
6-8 wk
30 Apr
22 May
0 wk
13 May
2 wk after
Safflower
Carthamus tinctorius
30 Apr
21 Jun
0 wk
24 Apr
11 Jun
1 wk before
Iceland poppy
Papaver nudicaule
Season too short
5 – 19 Mar
30 May
6-8 wk
30 Apr
11 Jul
0 wk
15 Mar
1 Jul
7 wk before
Bishop's flower
Ammi majus
19 Mar – 2 Apr
13 Jun
4-6 wk
30 Apr
11 Jul
0 wk
13 May
1 Jul
2 wk after
Drumsticks
Pycnosorus globosus
Greenhouse
18 Feb – 4 Mar
27 Feb
10-12 wk
13 May
2 wk after
Sunflower
Helianthus annuus
24 Apr – 1 May
10 Jun
3-4 wk
22 May
1 Jul
3 wk after
26 May
21 Jun
4 wk after
China aster
Callistephus chinensis
27 Mar – 10 Apr
30 May
6-8 wk
22 May
11 Jul
3 wk after
10 Jun
1 Jul
6 wk after
Annual phlox
Phlox drummondii
18 Mar – 1 Apr
9 Apr
6-8 wk
13 May
21 May
2 wk after
10 Jun
6 wk after
Hollyhock
Alcea rosea
5 – 19 Mar
6-8 wk
30 Apr
0 wk
13 May
2 wk after
Alpine delphinium
Delphinium elatum
5 Feb – 5 Mar
26 Apr
8-12 wk
30 Apr
21 Jun
0 wk
26 May
11 Jun
4 wk after
African marigold
Tagetes erecta
27 Mar – 10 Apr
9 Apr
6-8 wk
22 May
3 wk after
Black-eyed Susan
Rudbeckia hirta
12 – 26 Mar
20 May
6-8 wk
7 May
1 Jul
1 wk after
10 Jun
21 Jun
6 wk after
Wood sage
Salvia nemorosa
19 Feb – 5 Mar
16 Apr
8-10 wk
30 Apr
11 Jun
0 wk
26 May
1 Jun
4 wk after
Black-eyed susan vine
Thunbergia alata
Greenhouse
4 Mar – 1 Apr
11 Apr
6-10 wk
13 May
23 May
2 wk after
California goldenpoppy
Eschscholzia californica
30 Apr
17 Jul
0 wk
24 Apr
7 Jul
1 wk before
Painted tongue
Salpiglossis sinuata
13 – 27 Mar
30 Apr
8-10 wk
22 May
25 Jun
3 wk after
Water forget-me-not
Myosotis scorpioides
5 – 19 Mar
10 May
6-8 wk
30 Apr
21 Jun
0 wk
13 May
11 Jun
2 wk after