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