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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 94 days 17 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)
29 Mar – 12 Apr
11 Jun
5-7 wk
17 May
16 Jul
0 wk
18 May
6 Jul
0 wk
Broccoli
Brassica oleracea (Italica-gruppen)
5 – 19 Apr
23 Jun
4-6 wk
17 May
21 Jul
0 wk
18 May
11 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
6 Jun
5-7 wk
17 May
11 Jul
0 wk
17 May
1 Jul
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
11 May
4-5 wk
30 May
8 Jun
2 wk after
11 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)
Fleece
22 Feb – 22 Mar
11 Mar
8-12 wk
17 May
0 wk
23 May
1 wk after
Onion (sets)
Allium cepa (Cepa-gruppen)
18 May
0 wk
18 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
7 Jun
3-4 wk
19 May
28 Jun
0 wk
30 May
18 Jun
2 wk after
Carrot
Daucus carota subsp. sativus var. sativus
17 May
25 Jun
0 wk
17 May
15 Jun
0 wk
Palm Kale
Brassica oleracea (Palm Kale-gruppen)
29 Mar – 12 Apr
6 Jun
5-7 wk
17 May
11 Jul
0 wk
17 May
1 Jul
0 wk
Potato
Solanum tuberosum
15 – 29 Apr
27 Apr
4-6 wk
27 May
1 wk after
27 May
1 wk after
Ornamental Kale
Brassica oleracea (Ornamental-gruppen)
29 Mar – 12 Apr
10 Jun
5-7 wk
17 May
15 Jul
0 wk
18 May
5 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)
21 – 28 Apr
26 Apr
3-4 wk
19 May
0 wk
30 May
2 wk after
Red Cabbage
Brassica oleracea (Red Cabbage-gruppen)
5 – 19 Apr
18 Jun
4-6 wk
17 May
16 Jul
0 wk
Lettuce
Lactuca sativa
19 – 26 Apr
29 Jun
3-4 wk
17 May
20 Jul
0 wk
18 May
10 Jul
0 wk
Savoy Cabbage
Brassica oleracea (Savoy Cabbage-gruppen)
5 – 19 Apr
18 Jun
4-6 wk
17 May
16 Jul
0 wk
Shallot (bulbs)
Allium cepa (Aggregatum-gruppen)
19 Apr – 3 May
12 May
2-4 wk
17 May
26 May
0 wk
17 May
0 wk
Shallot (sets)
Allium cepa (Aggregatum-gruppen)
18 May
0 wk
18 May
0 wk
Spinach
Spinacia oleracea
19 – 26 Apr
19 Jul
3-4 wk
17 May
9 Aug
0 wk
14 May
30 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
18 Jun
4-6 wk
17 May
16 Jul
0 wk
Garden pea
Pisum sativum
19 – 26 Apr
14 Jun
3-4 wk
17 May
5 Jul
0 wk
18 May
25 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
10 May
8-10 wk
17 May
5 Jul
0 wk
11 Jun
25 Jun
4 wk after
Dill
Anethum graveolens
18 May
28 Jun
0 wk
Wild chives
Allium schoenoprasum
22 Mar – 5 Apr
30 May
6-8 wk
17 May
11 Jul
0 wk
18 May
1 Jul
0 wk
Spearmint
Mentha spicata
22 Feb – 22 Mar
16 May
8-12 wk
17 May
11 Jul
0 wk
11 Jun
1 Jul
4 wk after
Coriander
Coriandrum sativum
17 May
18 Jul
0 wk
30 May
8 Jul
2 wk after
Garden sage
Salvia officinalis
10 – 24 Mar
1 May
8-10 wk
19 May
26 Jun
0 wk
Common thyme
Thymus vulgaris
8 – 22 Mar
6 May
8-10 wk
17 May
1 Jul
0 wk
Oregano
Origanum vulgare
22 Mar – 5 Apr
20 May
6-8 wk
17 May
1 Jul
0 wk
11 Jun
21 Jun
4 wk after
Parsley
Petroselinum crispum
22 Mar – 5 Apr
20 May
6-8 wk
17 May
1 Jul
0 wk
18 May
21 Jun
0 wk
Rosemary
Salvia rosmarinus
10 Feb – 10 Mar
5 Mar
10-14 wk
19 May
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
11 Jul
0 wk
18 May
1 Jul
0 wk
Statice
Limonium sinuatum
Season too short
8 – 22 Mar
13 Mar
8-10 wk
17 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
27 Mar
6-8 wk
17 May
0 wk
18 Jun
5 wk after
Pinnate dahlia
Dahlia × pinnata
Greenhouse
22 Mar – 5 Apr
1 Apr
6-8 wk
17 May
0 wk
Pinnate dahlia (tubers)
Dahlia × pinnata
Greenhouse
28 Mar – 25 Apr
15 Apr
4-8 wk
23 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
23 Apr
8-12 wk
23 May
18 Jun
1 wk after
Creeping zinnia
Sanvitalia procumbens
Greenhouse
22 Mar – 5 Apr
6 Apr
6-8 wk
17 May
18 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
10 – 24 Mar
24 Mar
8-10 wk
19 May
19 May
0 wk
Love in a mist
Nigella damascena
17 May
20 Jun
0 wk
18 May
10 Jun
0 wk
Strawflower
Xerochrysum bracteatum
Season too short
22 Mar – 5 Apr
6-8 wk
17 May
0 wk
18 Jun
5 wk after
Purple-top vervain
Verbena bonariensis
24 Feb – 24 Mar
24 Mar
8-12 wk
19 May
19 May
0 wk
Cardoon
Cynara cardunculus
Season too short
22 Feb – 22 Mar
16 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
5 Jul
0 wk
18 May
25 Jun
0 wk
Snapdragon
Antirrhinum majus
22 Feb – 22 Mar
30 Apr
8-12 wk
17 May
25 Jun
0 wk
27 May
15 Jun
1 wk after
Flossflower
Ageratum houstonianum
Season too short
14 – 28 Mar
23 Mar
8-10 wk
23 May
1 wk after
Sweet pea
Lathyrus odoratus
22 Mar – 12 Apr
27 May
5-8 wk
17 May
1 Jul
0 wk
Stock
Matthiola incana
22 Mar – 5 Apr
24 May
6-8 wk
17 May
5 Jul
0 wk
30 May
25 Jun
2 wk after
Wormwood
Artemisia absinthium
22 Mar – 5 Apr
30 Apr
6-8 wk
17 May
11 Jun
0 wk
30 May
1 Jun
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
16 May
8-10 wk
17 May
11 Jul
0 wk
27 May
1 Jul
1 wk after
Petunia
Petunia
Season too short
22 Feb – 22 Mar
13 Mar
8-12 wk
17 May
0 wk
Sweet Scabious
Scabiosa atropurpurea
24 Mar – 7 Apr
7 Apr
6-8 wk
19 May
19 May
0 wk
29 Jun
6 wk after
Common zinnia
Zinnia elegans
Season too short
5 – 19 Apr
5 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
Season too short
5 – 19 Apr
15 Apr
4-6 wk
17 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
10 Apr
8-12 wk
17 May
5 Jun
0 wk
11 Jun
4 wk after
Yarrow
Achillea millefolium
22 Mar – 5 Apr
31 Mar
6-8 wk
17 May
0 wk
30 May
2 wk after
Safflower
Carthamus tinctorius
17 May
10 Jun
0 wk
18 May
31 May
0 wk
Iceland poppy
Papaver nudicaule
Season too short
22 Mar – 5 Apr
20 May
6-8 wk
17 May
1 Jul
0 wk
1 May
21 Jun
2 wk before
Bishop's flower
Ammi majus
5 – 19 Apr
28 May
4-6 wk
17 May
25 Jun
0 wk
30 May
15 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
24 May
3-4 wk
23 May
14 Jun
1 wk after
30 May
4 Jun
2 wk after
China aster
Callistephus chinensis
4 – 18 Apr
2 May
6-8 wk
30 May
13 Jun
2 wk after
29 Jun
6 wk after
Annual phlox
Phlox drummondii
Greenhouse
22 Mar – 5 Apr
6 Apr
6-8 wk
17 May
18 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
10 Apr
8-12 wk
17 May
5 Jun
0 wk
11 Jun
4 wk after
African marigold
Tagetes erecta
Greenhouse
22 Mar – 5 Apr
6 Apr
6-8 wk
17 May
18 May
0 wk
Black-eyed Susan
Rudbeckia hirta
24 Mar – 7 Apr
22 Apr
6-8 wk
19 May
3 Jun
0 wk
29 Jun
6 wk after
Wood sage
Salvia nemorosa
8 – 22 Mar
31 Mar
8-10 wk
17 May
26 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
24 Jun
0 wk
18 May
14 Jun
0 wk
Painted tongue
Salpiglossis sinuata
Fleece
14 – 28 Mar
13 Apr
8-10 wk
23 May
8 Jun
1 wk after
Water forget-me-not
Myosotis scorpioides
22 Mar – 5 Apr
30 Apr
6-8 wk
17 May
11 Jun
0 wk
30 May
1 Jun
2 wk after