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Method
Rel. frost
Last spring frost (0°C) 11 May Frost 9 of 10 years · 20 years of data
Frost-free season 100 days 11 May – 19 Aug
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)
23 Mar – 6 Apr
12 Jun
5-7 wk
11 May
17 Jul
0 wk
12 May
7 Jul
0 wk
Broccoli
Brassica oleracea (Italica-gruppen)
30 Mar – 13 Apr
24 Jun
4-6 wk
11 May
22 Jul
0 wk
12 May
12 Jul
0 wk
Chili pepper
Capsicum annuum
Season too short
26 Feb – 26 Mar
8-12 wk
21 May
1 wk after
Curly Kale
Brassica oleracea (Curly Kale-gruppen)
23 Mar – 6 Apr
7 Jun
5-7 wk
11 May
12 Jul
0 wk
11 May
2 Jul
0 wk
Garden cucumber
Cucumis sativus
Season too short
23 – 30 Apr
3-4 wk
21 May
1 wk after
Florence Fennel
Foeniculum vulgare
Fleece
26 Apr – 3 May
18 May
4-5 wk
31 May
15 Jun
3 wk after
5 Jun
5 Jun
4 wk after
Butter bean
Phaseolus lunatus
Season too short
24 – 31 May
3-4 wk
21 Jun
6 wk after
Onion
Allium cepa (Cepa-gruppen)
16 Feb – 16 Mar
12 Mar
8-12 wk
11 May
0 wk
24 May
2 wk after
Onion (sets)
Allium cepa (Cepa-gruppen)
12 May
27 May
0 wk
12 May
17 May
0 wk
Maize
Zea mays
Season too short
15 – 22 Apr
3-4 wk
13 May
0 wk
Swiss Chard
Beta vulgaris (Flavescens-gruppen)
18 – 25 Apr
14 Jun
3-4 wk
16 May
5 Jul
1 wk after
24 May
25 Jun
2 wk after
Carrot
Daucus carota subsp. sativus var. sativus
11 May
29 Jun
0 wk
11 May
19 Jun
0 wk
Palm Kale
Brassica oleracea (Palm Kale-gruppen)
23 Mar – 6 Apr
7 Jun
5-7 wk
11 May
12 Jul
0 wk
11 May
2 Jul
0 wk
Potato
Solanum tuberosum
9 – 23 Apr
12 May
4-6 wk
21 May
9 Jun
1 wk after
21 May
30 May
1 wk after
Ornamental Kale
Brassica oleracea (Ornamental-gruppen)
23 Mar – 6 Apr
14 Jun
5-7 wk
11 May
19 Jul
0 wk
12 May
9 Jul
0 wk
Pumpkin
Cucurbita pepo
Season too short
23 – 30 Apr
3-4 wk
21 May
1 wk after
Beetroot
Beta vulgaris (Conditiva-gruppen)
18 – 25 Apr
17 May
3-4 wk
16 May
7 Jun
1 wk after
24 May
28 May
2 wk after
Red Cabbage
Brassica oleracea (Red Cabbage-gruppen)
30 Mar – 13 Apr
19 Jun
4-6 wk
11 May
17 Jul
0 wk
Lettuce
Lactuca sativa
13 – 20 Apr
3 Jul
3-4 wk
11 May
24 Jul
0 wk
12 May
14 Jul
0 wk
Savoy Cabbage
Brassica oleracea (Savoy Cabbage-gruppen)
30 Mar – 13 Apr
19 Jun
4-6 wk
11 May
17 Jul
0 wk
Shallot (bulbs)
Allium cepa (Aggregatum-gruppen)
13 – 27 Apr
18 May
2-4 wk
11 May
1 Jun
0 wk
11 May
22 May
0 wk
Shallot (sets)
Allium cepa (Aggregatum-gruppen)
12 May
27 May
0 wk
12 May
17 May
0 wk
Spinach
Spinacia oleracea
13 – 20 Apr
20 Jul
3-4 wk
11 May
10 Aug
0 wk
8 May
31 Jul
0 wk
Sweet potato
Ipomoea batatas
5 – 19 Jun
4-6 wk
17 Jul
10 wk after
Garden tomato
Solanum lycopersicum
Season too short
18 Mar – 1 Apr
6-8 wk
13 May
0 wk
Tomatillo
Physalis ixocarpa
Common Bean
Phaseolus vulgaris
Season too short
15 – 29 Apr
2-4 wk
13 May
0 wk
24 May
2 wk after
White Cabbage
Brassica oleracea (White Cabbage-gruppen)
30 Mar – 13 Apr
19 Jun
4-6 wk
11 May
17 Jul
0 wk
Garden pea
Pisum sativum
13 – 20 Apr
18 Jun
3-4 wk
11 May
9 Jul
0 wk
12 May
29 Jun
0 wk

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
9 – 23 Apr
4-6 wk
21 May
1 wk after
Lemon balm
Melissa officinalis
2 – 16 Mar
14 May
8-10 wk
11 May
9 Jul
0 wk
5 Jun
29 Jun
4 wk after
Dill
Anethum graveolens
12 May
5 Jul
0 wk
Wild chives
Allium schoenoprasum
16 – 30 Mar
31 May
6-8 wk
11 May
12 Jul
0 wk
12 May
2 Jul
0 wk
Spearmint
Mentha spicata
16 Feb – 16 Mar
17 May
8-12 wk
11 May
12 Jul
0 wk
5 Jun
2 Jul
4 wk after
Coriander
Coriandrum sativum
11 May
25 Jul
0 wk
24 May
15 Jul
2 wk after
Garden sage
Salvia officinalis
7 – 21 Mar
2 May
8-10 wk
16 May
27 Jun
1 wk after
Common thyme
Thymus vulgaris
2 – 16 Mar
7 May
8-10 wk
11 May
2 Jul
0 wk
Oregano
Origanum vulgare
16 – 30 Mar
21 May
6-8 wk
11 May
2 Jul
0 wk
5 Jun
22 Jun
4 wk after
Parsley
Petroselinum crispum
16 – 30 Mar
21 May
6-8 wk
11 May
2 Jul
0 wk
12 May
22 Jun
0 wk
Rosemary
Salvia rosmarinus
7 Feb – 7 Mar
6 Mar
10-14 wk
16 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
23 – 30 Apr
3-4 wk
21 May
1 wk after
Cornflower
Centaurea cyanus
11 May
12 Jul
0 wk
12 May
2 Jul
0 wk
Statice
Limonium sinuatum
Season too short
4 – 18 Mar
15 Mar
8-10 wk
13 May
0 wk
Sweet William
Dianthus barbatus
16 – 30 Mar
6-8 wk
11 May
0 wk
21 May
1 wk after
Snow-on-the-mountain
Euphorbia marginata
Season too short
18 Mar – 1 Apr
29 Mar
6-8 wk
13 May
0 wk
12 Jun
5 wk after
Pinnate dahlia
Dahlia × pinnata
Greenhouse
16 – 30 Mar
1 Apr
6-8 wk
11 May
13 May
0 wk
Pinnate dahlia (tubers)
Dahlia × pinnata
Greenhouse
22 Mar – 19 Apr
15 Apr
4-8 wk
17 May
1 wk after
17 May
1 wk after
Foxglove
Digitalis purpurea
2 – 16 Mar
8-10 wk
11 May
0 wk
24 May
2 wk after
Busy lizzie
Impatiens walleriana
Greenhouse
26 Feb – 26 Mar
25 Apr
8-12 wk
21 May
20 Jun
1 wk after
Creeping zinnia
Sanvitalia procumbens
Greenhouse
18 Mar – 1 Apr
8 Apr
6-8 wk
13 May
20 May
0 wk
Hyacinth bean
Dolichos lablab
Season too short
19 Apr – 3 May
4-6 wk
31 May
3 wk after
Chinese lantern
Physalis alkekengi
7 – 21 Mar
31 Mar
8-10 wk
16 May
26 May
1 wk after
Love in a mist
Nigella damascena
11 May
24 Jun
0 wk
12 May
14 Jun
0 wk
Strawflower
Xerochrysum bracteatum
Season too short
18 Mar – 1 Apr
19 Mar
6-8 wk
13 May
0 wk
12 Jun
5 wk after
Purple-top vervain
Verbena bonariensis
21 Feb – 21 Mar
31 Mar
8-12 wk
16 May
26 May
1 wk after
Cardoon
Cynara cardunculus
Season too short
18 Feb – 18 Mar
17 Mar
8-12 wk
13 May
0 wk
Regal-foxtail
Ptilotus nobilis
Season too short
26 Feb – 26 Mar
8-12 wk
21 May
1 wk after
Globe amaranth
Gomphrena globosa
Season too short
26 Mar – 9 Apr
6-8 wk
21 May
1 wk after
Corn poppy
Papaver rhoeas
11 May
9 Jul
0 wk
12 May
29 Jun
0 wk
Snapdragon
Antirrhinum majus
16 Feb – 16 Mar
4 May
8-12 wk
11 May
29 Jun
0 wk
21 May
19 Jun
1 wk after
Flossflower
Ageratum houstonianum
Greenhouse
12 – 26 Mar
25 Mar
8-10 wk
21 May
1 wk after
Sweet pea
Lathyrus odoratus
16 Mar – 6 Apr
28 May
5-8 wk
11 May
2 Jul
0 wk
Stock
Matthiola incana
16 – 30 Mar
28 May
6-8 wk
11 May
9 Jul
0 wk
24 May
29 Jun
2 wk after
Wormwood
Artemisia absinthium
16 – 30 Mar
1 May
6-8 wk
11 May
12 Jun
0 wk
24 May
2 Jun
2 wk after
Mexican sunflower
Tithonia rotundifolia
Season too short
9 – 23 Apr
4-6 wk
21 May
1 wk after
Garden pansy
Viola × wittrockiana
2 – 16 Mar
17 May
8-10 wk
11 May
12 Jul
0 wk
21 May
2 Jul
1 wk after
Petunia
Petunia
Season too short
18 Feb – 18 Mar
15 Mar
8-12 wk
13 May
0 wk
Sweet Scabious
Scabiosa atropurpurea
21 Mar – 4 Apr
14 Apr
6-8 wk
16 May
26 May
1 wk after
23 Jun
6 wk after
Common zinnia
Zinnia elegans
Season too short
1 – 15 Apr
7 Apr
4-6 wk
13 May
0 wk
Common morning glory
Ipomoea purpurea
Season too short
16 – 30 Apr
3-5 wk
21 May
1 wk after
Garden cosmos
Cosmos bipinnatus
Season too short
1 – 15 Apr
15 Apr
4-6 wk
13 May
13 May
0 wk
24 May
2 wk after
Scarlet milkweed
Asclepias curassavica
Season too short
8 Mar – 5 Apr
8-12 wk
31 May
3 wk after
Bee balm
Monarda didyma
16 Feb – 16 Mar
14 Apr
8-12 wk
11 May
9 Jun
0 wk
5 Jun
4 wk after
Yarrow
Achillea millefolium
16 – 30 Mar
1 Apr
6-8 wk
11 May
13 May
0 wk
24 May
2 wk after
Safflower
Carthamus tinctorius
11 May
11 Jun
0 wk
12 May
1 Jun
0 wk
Iceland poppy
Papaver nudicaule
Season too short
16 – 30 Mar
21 May
6-8 wk
11 May
2 Jul
0 wk
25 Apr
22 Jun
2 wk before
Bishop's flower
Ammi majus
30 Mar – 13 Apr
1 Jun
4-6 wk
11 May
29 Jun
0 wk
24 May
19 Jun
2 wk after
Drumsticks
Pycnosorus globosus
Season too short
26 Feb – 12 Mar
10-12 wk
21 May
1 wk after
Sunflower
Helianthus annuus
3 – 10 May
14 May
3-4 wk
31 May
4 Jun
3 wk after
5 Jun
4 wk after
China aster
Callistephus chinensis
5 – 19 Apr
3 May
6-8 wk
31 May
14 Jun
3 wk after
23 Jun
6 wk after
Annual phlox
Phlox drummondii
Greenhouse
16 – 30 Mar
8 Apr
6-8 wk
11 May
20 May
0 wk
24 May
2 wk after
Hollyhock
Alcea rosea
16 – 30 Mar
6-8 wk
11 May
0 wk
24 May
2 wk after
Alpine delphinium
Delphinium elatum
16 Feb – 16 Mar
14 Apr
8-12 wk
11 May
9 Jun
0 wk
5 Jun
4 wk after
African marigold
Tagetes erecta
Greenhouse
18 Mar – 1 Apr
8 Apr
6-8 wk
13 May
20 May
0 wk
Black-eyed Susan
Rudbeckia hirta
21 Mar – 4 Apr
23 Apr
6-8 wk
16 May
4 Jun
1 wk after
23 Jun
6 wk after
Wood sage
Salvia nemorosa
2 – 16 Mar
4 Apr
8-10 wk
11 May
30 May
0 wk
5 Jun
4 wk after
Black-eyed susan vine
Thunbergia alata
Season too short
12 Mar – 9 Apr
6-10 wk
21 May
1 wk after
California goldenpoppy
Eschscholzia californica
11 May
27 Jun
0 wk
12 May
17 Jun
0 wk
Painted tongue
Salpiglossis sinuata
Fleece
12 – 26 Mar
20 Apr
8-10 wk
21 May
15 Jun
1 wk after
Water forget-me-not
Myosotis scorpioides
16 – 30 Mar
1 May
6-8 wk
11 May
12 Jun
0 wk
24 May
2 Jun
2 wk after