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Method
Rel. frost
Last spring frost (0°C) 17 May Frost 9 of 10 years · 20 years of data
Frost-free season 109 days 17 May – 3 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)
29 Mar – 12 Apr
8 Jun
5-7 wk
17 May
13 Jul
0 wk
18 May
3 Jul
0 wk
Broccoli
Brassica oleracea (Italica-gruppen)
5 – 19 Apr
20 Jun
4-6 wk
17 May
18 Jul
0 wk
18 May
8 Jul
0 wk
Chili pepper
Capsicum annuum
Season too short
28 Feb – 28 Mar
8-12 wk
23 May
1 wk after
Curly Kale
Brassica oleracea (Curly Kale-gruppen)
29 Mar – 12 Apr
3 Jun
5-7 wk
17 May
8 Jul
0 wk
17 May
28 Jun
0 wk
Garden cucumber
Cucumis sativus
Season too short
25 Apr – 2 May
3-4 wk
23 May
1 wk after
Florence Fennel
Foeniculum vulgare
Fleece
25 Apr – 2 May
30 May
4-5 wk
30 May
27 Jun
2 wk after
11 Jun
17 Jun
4 wk after
Butter bean
Phaseolus lunatus
Season too short
28 May – 4 Jun
3-4 wk
25 Jun
6 wk after
Onion
Allium cepa (Cepa-gruppen)
Greenhouse
22 Feb – 22 Mar
10 Mar
8-12 wk
17 May
0 wk
17 May
0 wk
Onion (sets)
Allium cepa (Cepa-gruppen)
Fleece
14 May
14 May
0 wk
14 May
0 wk
Maize
Zea mays
Season too short
19 – 26 Apr
3-4 wk
17 May
0 wk
Swiss Chard
Beta vulgaris (Flavescens-gruppen)
21 – 28 Apr
26 Jun
3-4 wk
19 May
17 Jul
0 wk
30 May
7 Jul
2 wk after
Carrot
Daucus carota subsp. sativus var. sativus
17 May
28 Jun
0 wk
17 May
18 Jun
0 wk
Palm Kale
Brassica oleracea (Palm Kale-gruppen)
29 Mar – 12 Apr
3 Jun
5-7 wk
17 May
8 Jul
0 wk
17 May
28 Jun
0 wk
Potato
Solanum tuberosum
Fleece
6 – 20 Apr
22 Apr
4-6 wk
18 May
20 May
0 wk
18 May
0 wk
Ornamental Kale
Brassica oleracea (Ornamental-gruppen)
29 Mar – 12 Apr
13 Jun
5-7 wk
17 May
18 Jul
0 wk
18 May
8 Jul
0 wk
Pumpkin
Cucurbita pepo
Season too short
25 Apr – 2 May
3-4 wk
23 May
1 wk after
Beetroot
Beta vulgaris (Conditiva-gruppen)
Fleece
19 – 26 Apr
25 Apr
3-4 wk
17 May
0 wk
23 May
1 wk after
Red Cabbage
Brassica oleracea (Red Cabbage-gruppen)
5 – 19 Apr
15 Jun
4-6 wk
17 May
13 Jul
0 wk
Lettuce
Lactuca sativa
19 – 26 Apr
2 Jul
3-4 wk
17 May
23 Jul
0 wk
18 May
13 Jul
0 wk
Savoy Cabbage
Brassica oleracea (Savoy Cabbage-gruppen)
5 – 19 Apr
15 Jun
4-6 wk
17 May
13 Jul
0 wk
Shallot (bulbs)
Allium cepa (Aggregatum-gruppen)
Fleece
13 – 27 Apr
8 May
2-4 wk
11 May
22 May
1 wk before
11 May
12 May
1 wk before
Shallot (sets)
Allium cepa (Aggregatum-gruppen)
Fleece
14 May
14 May
0 wk
14 May
0 wk
Spinach
Spinacia oleracea
19 – 26 Apr
17 Jul
3-4 wk
17 May
7 Aug
0 wk
14 May
28 Jul
0 wk
Sweet potato
Ipomoea batatas
11 – 25 Jun
4-6 wk
23 Jul
10 wk after
Garden tomato
Solanum lycopersicum
Season too short
22 Mar – 5 Apr
6-8 wk
17 May
0 wk
Tomatillo
Physalis ixocarpa
Common Bean
Phaseolus vulgaris
Season too short
19 Apr – 3 May
2-4 wk
17 May
0 wk
30 May
2 wk after
White Cabbage
Brassica oleracea (White Cabbage-gruppen)
5 – 19 Apr
15 Jun
4-6 wk
17 May
13 Jul
0 wk
Garden pea
Pisum sativum
19 – 26 Apr
17 Jun
3-4 wk
17 May
8 Jul
0 wk
18 May
28 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
11 – 25 Apr
4-6 wk
23 May
1 wk after
Lemon balm
Melissa officinalis
8 – 22 Mar
13 May
8-10 wk
17 May
8 Jul
0 wk
11 Jun
28 Jun
4 wk after
Dill
Anethum graveolens
18 May
17 Jul
0 wk
Wild chives
Allium schoenoprasum
22 Mar – 5 Apr
27 May
6-8 wk
17 May
8 Jul
0 wk
18 May
28 Jun
0 wk
Spearmint
Mentha spicata
22 Feb – 22 Mar
13 May
8-12 wk
17 May
8 Jul
0 wk
11 Jun
28 Jun
4 wk after
Coriander
Coriandrum sativum
17 May
6 Aug
0 wk
30 May
27 Jul
2 wk after
Garden sage
Salvia officinalis
10 – 24 Mar
28 Apr
8-10 wk
19 May
23 Jun
0 wk
Common thyme
Thymus vulgaris
8 – 22 Mar
3 May
8-10 wk
17 May
28 Jun
0 wk
Oregano
Origanum vulgare
22 Mar – 5 Apr
17 May
6-8 wk
17 May
28 Jun
0 wk
11 Jun
18 Jun
4 wk after
Parsley
Petroselinum crispum
22 Mar – 5 Apr
17 May
6-8 wk
17 May
28 Jun
0 wk
18 May
18 Jun
0 wk
Rosemary
Salvia rosmarinus
Fleece
8 Feb – 8 Mar
30 Mar
10-14 wk
17 May
8 Jun
0 wk

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