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