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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 112 days 11 May – 31 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
14 Jun
5-7 wk
11 May
19 Jul
0 wk
15 May
9 Jul
1 wk after
Broccoli
Brassica oleracea (Italica-gruppen)
30 Mar – 13 Apr
26 Jun
4-6 wk
11 May
24 Jul
0 wk
15 May
14 Jul
1 wk after
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
9 Jun
5-7 wk
11 May
14 Jul
0 wk
11 May
4 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
24 May
4-5 wk
31 May
21 Jun
3 wk after
15 Jun
5 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
13 Mar
8-12 wk
11 May
0 wk
1 Jun
3 wk after
Onion (sets)
Allium cepa (Cepa-gruppen)
15 May
28 May
1 wk after
15 May
18 May
1 wk after
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
20 Jun
3-4 wk
16 May
11 Jul
1 wk after
1 Jun
1 Jul
3 wk after
Carrot
Daucus carota subsp. sativus var. sativus
11 May
26 Jun
0 wk
11 May
16 Jun
0 wk
Palm Kale
Brassica oleracea (Palm Kale-gruppen)
23 Mar – 6 Apr
9 Jun
5-7 wk
11 May
14 Jul
0 wk
11 May
4 Jul
0 wk
Potato
Solanum tuberosum
15 – 29 Apr
12 May
4-6 wk
27 May
9 Jun
2 wk after
27 May
30 May
2 wk after
Ornamental Kale
Brassica oleracea (Ornamental-gruppen)
23 Mar – 6 Apr
11 Jun
5-7 wk
11 May
16 Jul
0 wk
15 May
6 Jul
1 wk after
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
14 May
3-4 wk
16 May
4 Jun
1 wk after
1 Jun
3 wk after
Red Cabbage
Brassica oleracea (Red Cabbage-gruppen)
30 Mar – 13 Apr
21 Jun
4-6 wk
11 May
19 Jul
0 wk
Lettuce
Lactuca sativa
13 – 20 Apr
30 Jun
3-4 wk
11 May
21 Jul
0 wk
15 May
11 Jul
1 wk after
Savoy Cabbage
Brassica oleracea (Savoy Cabbage-gruppen)
30 Mar – 13 Apr
21 Jun
4-6 wk
11 May
19 Jul
0 wk
Shallot (bulbs)
Allium cepa (Aggregatum-gruppen)
13 – 27 Apr
17 May
2-4 wk
11 May
31 May
0 wk
11 May
21 May
0 wk
Shallot (sets)
Allium cepa (Aggregatum-gruppen)
15 May
28 May
1 wk after
15 May
18 May
1 wk after
Spinach
Spinacia oleracea
13 – 20 Apr
23 Jul
3-4 wk
11 May
13 Aug
0 wk
7 May
3 Aug
1 wk before
Sweet potato
Ipomoea batatas
12 – 26 Jun
4-6 wk
24 Jul
11 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
1 Jun
3 wk after
White Cabbage
Brassica oleracea (White Cabbage-gruppen)
30 Mar – 13 Apr
21 Jun
4-6 wk
11 May
19 Jul
0 wk
Garden pea
Pisum sativum
13 – 20 Apr
15 Jun
3-4 wk
11 May
6 Jul
0 wk
15 May
26 Jun
1 wk after

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
11 May
8-10 wk
11 May
6 Jul
0 wk
15 Jun
26 Jun
5 wk after
Dill
Anethum graveolens
15 May
11 Jul
1 wk after
Wild chives
Allium schoenoprasum
16 – 30 Mar
2 Jun
6-8 wk
11 May
14 Jul
0 wk
15 May
4 Jul
1 wk after
Spearmint
Mentha spicata
16 Feb – 16 Mar
19 May
8-12 wk
11 May
14 Jul
0 wk
15 Jun
4 Jul
5 wk after
Coriander
Coriandrum sativum
11 May
31 Jul
0 wk
1 Jun
21 Jul
3 wk after
Garden sage
Salvia officinalis
7 – 21 Mar
4 May
8-10 wk
16 May
29 Jun
1 wk after
Common thyme
Thymus vulgaris
2 – 16 Mar
9 May
8-10 wk
11 May
4 Jul
0 wk
Oregano
Origanum vulgare
16 – 30 Mar
23 May
6-8 wk
11 May
4 Jul
0 wk
15 Jun
24 Jun
5 wk after
Parsley
Petroselinum crispum
16 – 30 Mar
23 May
6-8 wk
11 May
4 Jul
0 wk
15 May
24 Jun
1 wk after
Rosemary
Salvia rosmarinus
7 Feb – 7 Mar
17 Mar
10-14 wk
16 May
26 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
14 Jul
0 wk
15 May
4 Jul
1 wk after
Statice
Limonium sinuatum
Greenhouse
4 – 18 Mar
21 Mar
8-10 wk
13 May
16 May
0 wk
Sweet William
Dianthus barbatus
16 – 30 Mar
6-8 wk
11 May
0 wk
27 May
2 wk after
Snow-on-the-mountain
Euphorbia marginata
Greenhouse
18 Mar – 1 Apr
4 Apr
6-8 wk
13 May
16 May
0 wk
21 Jun
6 wk after
Pinnate dahlia
Dahlia × pinnata
Greenhouse
16 – 30 Mar
13 Apr
6-8 wk
11 May
25 May
0 wk
Pinnate dahlia (tubers)
Dahlia × pinnata
Fleece
6 Apr – 4 May
4-8 wk
1 Jun
3 wk after
1 Jun
3 wk after
Foxglove
Digitalis purpurea
2 – 16 Mar
8-10 wk
11 May
0 wk
1 Jun
3 wk after
Busy lizzie
Impatiens walleriana
Greenhouse
26 Feb – 26 Mar
3 May
8-12 wk
21 May
28 Jun
1 wk after
Creeping zinnia
Sanvitalia procumbens
Greenhouse
18 Mar – 1 Apr
14 Apr
6-8 wk
13 May
26 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
6 Apr
8-10 wk
16 May
1 Jun
1 wk after
Love in a mist
Nigella damascena
11 May
21 Jun
0 wk
15 May
11 Jun
1 wk after
Strawflower
Xerochrysum bracteatum
Season too short
18 Mar – 1 Apr
25 Mar
6-8 wk
13 May
0 wk
21 Jun
6 wk after
Purple-top vervain
Verbena bonariensis
21 Feb – 21 Mar
6 Apr
8-12 wk
16 May
1 Jun
1 wk after
Cardoon
Cynara cardunculus
Greenhouse
18 Feb – 18 Mar
20 Mar
8-12 wk
13 May
15 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
6 Jul
0 wk
15 May
26 Jun
1 wk after
Snapdragon
Antirrhinum majus
16 Feb – 16 Mar
1 May
8-12 wk
11 May
26 Jun
0 wk
27 May
16 Jun
2 wk after
Flossflower
Ageratum houstonianum
Greenhouse
12 – 26 Mar
31 Mar
8-10 wk
21 May
26 May
1 wk after
Sweet pea
Lathyrus odoratus
16 Mar – 6 Apr
30 May
5-8 wk
11 May
4 Jul
0 wk
Stock
Matthiola incana
16 – 30 Mar
25 May
6-8 wk
11 May
6 Jul
0 wk
1 Jun
26 Jun
3 wk after
Wormwood
Artemisia absinthium
16 – 30 Mar
3 May
6-8 wk
11 May
14 Jun
0 wk
1 Jun
4 Jun
3 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
19 May
8-10 wk
11 May
14 Jul
0 wk
27 May
4 Jul
2 wk after
Petunia
Petunia
Greenhouse
18 Feb – 18 Mar
21 Mar
8-12 wk
13 May
16 May
0 wk
Sweet Scabious
Scabiosa atropurpurea
21 Mar – 4 Apr
20 Apr
6-8 wk
16 May
1 Jun
1 wk after
29 Jun
7 wk after
Common zinnia
Zinnia elegans
Greenhouse
1 – 15 Apr
15 Apr
4-6 wk
13 May
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
Greenhouse
1 – 15 Apr
27 Apr
4-6 wk
13 May
25 May
0 wk
1 Jun
3 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
11 Apr
8-12 wk
11 May
6 Jun
0 wk
15 Jun
5 wk after
Yarrow
Achillea millefolium
16 – 30 Mar
3 Apr
6-8 wk
11 May
15 May
0 wk
1 Jun
3 wk after
Safflower
Carthamus tinctorius
11 May
14 Jun
0 wk
15 May
4 Jun
1 wk after
Iceland poppy
Papaver nudicaule
Season too short
16 – 30 Mar
23 May
6-8 wk
11 May
4 Jul
0 wk
23 Apr
24 Jun
3 wk before
Bishop's flower
Ammi majus
30 Mar – 13 Apr
29 May
4-6 wk
11 May
26 Jun
0 wk
1 Jun
16 Jun
3 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
25 May
3-4 wk
31 May
15 Jun
3 wk after
15 Jun
5 wk after
China aster
Callistephus chinensis
5 – 19 Apr
14 May
6-8 wk
31 May
25 Jun
3 wk after
29 Jun
7 wk after
Annual phlox
Phlox drummondii
Greenhouse
16 – 30 Mar
14 Apr
6-8 wk
11 May
26 May
0 wk
1 Jun
3 wk after
Hollyhock
Alcea rosea
16 – 30 Mar
6-8 wk
11 May
0 wk
1 Jun
3 wk after
Alpine delphinium
Delphinium elatum
16 Feb – 16 Mar
11 Apr
8-12 wk
11 May
6 Jun
0 wk
15 Jun
5 wk after
African marigold
Tagetes erecta
Greenhouse
18 Mar – 1 Apr
14 Apr
6-8 wk
13 May
26 May
0 wk
Black-eyed Susan
Rudbeckia hirta
21 Mar – 4 Apr
4 May
6-8 wk
16 May
15 Jun
1 wk after
29 Jun
7 wk after
Wood sage
Salvia nemorosa
2 – 16 Mar
1 Apr
8-10 wk
11 May
27 May
0 wk
15 Jun
5 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
2 Jul
0 wk
15 May
22 Jun
1 wk after
Painted tongue
Salpiglossis sinuata
Fleece
12 – 26 Mar
26 Apr
8-10 wk
21 May
21 Jun
1 wk after
Water forget-me-not
Myosotis scorpioides
16 – 30 Mar
3 May
6-8 wk
11 May
14 Jun
0 wk
1 Jun
4 Jun
3 wk after