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Method
Rel. frost
Last spring frost (0°C) 18 May Frost 9 of 10 years · 20 years of data
Frost-free season 94 days 18 May – 20 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)
30 Mar – 13 Apr
10 Jun
5-7 wk
18 May
15 Jul
0 wk
19 May
5 Jul
0 wk
Broccoli
Brassica oleracea (Italica-gruppen)
6 – 20 Apr
22 Jun
4-6 wk
18 May
20 Jul
0 wk
19 May
10 Jul
0 wk
Chili pepper
Capsicum annuum
Season too short
1 – 29 Mar
8-12 wk
24 May
1 wk after
Curly Kale
Brassica oleracea (Curly Kale-gruppen)
30 Mar – 13 Apr
5 Jun
5-7 wk
18 May
10 Jul
0 wk
18 May
30 Jun
0 wk
Garden cucumber
Cucumis sativus
Season too short
26 Apr – 3 May
3-4 wk
24 May
1 wk after
Florence Fennel
Foeniculum vulgare
Greenhouse
19 – 26 Apr
24 May
4-5 wk
24 May
21 Jun
1 wk after
31 May
11 Jun
2 wk after
Butter bean
Phaseolus lunatus
Season too short
29 May – 5 Jun
3-4 wk
26 Jun
6 wk after
Onion
Allium cepa (Cepa-gruppen)
Greenhouse
23 Feb – 23 Mar
16 Mar
8-12 wk
18 May
0 wk
18 May
0 wk
Onion (sets)
Allium cepa (Cepa-gruppen)
Fleece
15 May
22 May
0 wk
15 May
0 wk
Maize
Zea mays
Season too short
20 – 27 Apr
3-4 wk
18 May
0 wk
Swiss Chard
Beta vulgaris (Flavescens-gruppen)
22 – 29 Apr
5 Jun
3-4 wk
20 May
26 Jun
0 wk
31 May
16 Jun
2 wk after
Carrot
Daucus carota subsp. sativus var. sativus
18 May
21 Jun
0 wk
18 May
11 Jun
0 wk
Palm Kale
Brassica oleracea (Palm Kale-gruppen)
30 Mar – 13 Apr
5 Jun
5-7 wk
18 May
10 Jul
0 wk
18 May
30 Jun
0 wk
Potato
Solanum tuberosum
16 – 30 Apr
19 Apr
4-6 wk
28 May
1 wk after
28 May
1 wk after
Ornamental Kale
Brassica oleracea (Ornamental-gruppen)
30 Mar – 13 Apr
6 Jun
5-7 wk
18 May
11 Jul
0 wk
19 May
1 Jul
0 wk
Pumpkin
Cucurbita pepo
Season too short
26 Apr – 3 May
3-4 wk
24 May
1 wk after
Beetroot
Beta vulgaris (Conditiva-gruppen)
Fleece
20 – 27 Apr
10 May
3-4 wk
18 May
31 May
0 wk
24 May
1 wk after
Red Cabbage
Brassica oleracea (Red Cabbage-gruppen)
6 – 20 Apr
17 Jun
4-6 wk
18 May
15 Jul
0 wk
Lettuce
Lactuca sativa
20 – 27 Apr
25 Jun
3-4 wk
18 May
16 Jul
0 wk
19 May
6 Jul
0 wk
Savoy Cabbage
Brassica oleracea (Savoy Cabbage-gruppen)
6 – 20 Apr
17 Jun
4-6 wk
18 May
15 Jul
0 wk
Shallot (bulbs)
Allium cepa (Aggregatum-gruppen)
20 Apr – 4 May
4 May
2-4 wk
18 May
18 May
0 wk
18 May
0 wk
Shallot (sets)
Allium cepa (Aggregatum-gruppen)
Fleece
15 May
22 May
0 wk
15 May
0 wk
Spinach
Spinacia oleracea
20 – 27 Apr
17 Jul
3-4 wk
18 May
7 Aug
0 wk
15 May
28 Jul
0 wk
Sweet potato
Ipomoea batatas
12 – 26 Jun
4-6 wk
24 Jul
10 wk after
Garden tomato
Solanum lycopersicum
Season too short
23 Mar – 6 Apr
6-8 wk
18 May
0 wk
Tomatillo
Physalis ixocarpa
Common Bean
Phaseolus vulgaris
Season too short
20 Apr – 4 May
2-4 wk
18 May
0 wk
31 May
2 wk after
White Cabbage
Brassica oleracea (White Cabbage-gruppen)
6 – 20 Apr
17 Jun
4-6 wk
18 May
15 Jul
0 wk
Garden pea
Pisum sativum
20 – 27 Apr
10 Jun
3-4 wk
18 May
1 Jul
0 wk
19 May
21 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
12 – 26 Apr
4-6 wk
24 May
1 wk after
Lemon balm
Melissa officinalis
9 – 23 Mar
6 May
8-10 wk
18 May
1 Jul
0 wk
12 Jun
21 Jun
4 wk after
Dill
Anethum graveolens
19 May
26 Jun
0 wk
Wild chives
Allium schoenoprasum
23 Mar – 6 Apr
29 May
6-8 wk
18 May
10 Jul
0 wk
19 May
30 Jun
0 wk
Spearmint
Mentha spicata
23 Feb – 23 Mar
15 May
8-12 wk
18 May
10 Jul
0 wk
12 Jun
30 Jun
4 wk after
Coriander
Coriandrum sativum
18 May
16 Jul
0 wk
31 May
6 Jul
2 wk after
Garden sage
Salvia officinalis
11 – 25 Mar
30 Apr
8-10 wk
20 May
25 Jun
0 wk
Common thyme
Thymus vulgaris
9 – 23 Mar
5 May
8-10 wk
18 May
30 Jun
0 wk
Oregano
Origanum vulgare
23 Mar – 6 Apr
19 May
6-8 wk
18 May
30 Jun
0 wk
12 Jun
20 Jun
4 wk after
Parsley
Petroselinum crispum
23 Mar – 6 Apr
19 May
6-8 wk
18 May
30 Jun
0 wk
19 May
20 Jun
0 wk
Rosemary
Salvia rosmarinus
Fleece
9 Feb – 9 Mar
18 Mar
10-14 wk
18 May
27 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
26 Apr – 3 May
3-4 wk
24 May
1 wk after
Cornflower
Centaurea cyanus
18 May
10 Jul
0 wk
19 May
30 Jun
0 wk
Statice
Limonium sinuatum
Season too short
9 – 23 Mar
15 Mar
8-10 wk
18 May
0 wk
Sweet William
Dianthus barbatus
23 Mar – 6 Apr
6-8 wk
18 May
0 wk
28 May
1 wk after
Snow-on-the-mountain
Euphorbia marginata
Season too short
23 Mar – 6 Apr
29 Mar
6-8 wk
18 May
0 wk
19 Jun
5 wk after
Pinnate dahlia
Dahlia × pinnata
Greenhouse
23 Mar – 6 Apr
2 Apr
6-8 wk
18 May
0 wk
Pinnate dahlia (tubers)
Dahlia × pinnata
Greenhouse
29 Mar – 26 Apr
16 Apr
4-8 wk
24 May
1 wk after
24 May
1 wk after
Foxglove
Digitalis purpurea
9 – 23 Mar
8-10 wk
18 May
0 wk
31 May
2 wk after
Busy lizzie
Impatiens walleriana
Greenhouse
1 – 29 Mar
24 Apr
8-12 wk
24 May
19 Jun
1 wk after
Creeping zinnia
Sanvitalia procumbens
Greenhouse
23 Mar – 6 Apr
8 Apr
6-8 wk
18 May
20 May
0 wk
Hyacinth bean
Dolichos lablab
Season too short
19 Apr – 3 May
4-6 wk
31 May
2 wk after
Chinese lantern
Physalis alkekengi
Fleece
9 – 23 Mar
6 Apr
8-10 wk
18 May
1 Jun
0 wk
Love in a mist
Nigella damascena
18 May
16 Jun
0 wk
19 May
6 Jun
0 wk
Strawflower
Xerochrysum bracteatum
Season too short
23 Mar – 6 Apr
6-8 wk
18 May
0 wk
19 Jun
5 wk after
Purple-top vervain
Verbena bonariensis
Fleece
23 Feb – 23 Mar
6 Apr
8-12 wk
18 May
1 Jun
0 wk
Cardoon
Cynara cardunculus
Season too short
23 Feb – 23 Mar
14 Mar
8-12 wk
18 May
0 wk
Regal-foxtail
Ptilotus nobilis
Season too short
1 – 29 Mar
8-12 wk
24 May
1 wk after
Globe amaranth
Gomphrena globosa
Season too short
29 Mar – 12 Apr
6-8 wk
24 May
1 wk after
Corn poppy
Papaver rhoeas
18 May
1 Jul
0 wk
19 May
21 Jun
0 wk
Snapdragon
Antirrhinum majus
23 Feb – 23 Mar
26 Apr
8-12 wk
18 May
21 Jun
0 wk
28 May
11 Jun
1 wk after
Flossflower
Ageratum houstonianum
Season too short
15 – 29 Mar
25 Mar
8-10 wk
24 May
1 wk after
Sweet pea
Lathyrus odoratus
23 Mar – 13 Apr
26 May
5-8 wk
18 May
30 Jun
0 wk
Stock
Matthiola incana
23 Mar – 6 Apr
20 May
6-8 wk
18 May
1 Jul
0 wk
31 May
21 Jun
2 wk after
Wormwood
Artemisia absinthium
23 Mar – 6 Apr
29 Apr
6-8 wk
18 May
10 Jun
0 wk
31 May
31 May
2 wk after
Mexican sunflower
Tithonia rotundifolia
Season too short
12 – 26 Apr
4-6 wk
24 May
1 wk after
Garden pansy
Viola × wittrockiana
9 – 23 Mar
15 May
8-10 wk
18 May
10 Jul
0 wk
28 May
30 Jun
1 wk after
Petunia
Petunia
Season too short
23 Feb – 23 Mar
15 Mar
8-12 wk
18 May
0 wk
Sweet Scabious
Scabiosa atropurpurea
Fleece
23 Mar – 6 Apr
20 Apr
6-8 wk
18 May
1 Jun
0 wk
12 Jun
4 wk after
Common zinnia
Zinnia elegans
Season too short
6 – 20 Apr
6 Apr
4-6 wk
18 May
0 wk
Common morning glory
Ipomoea purpurea
Season too short
19 Apr – 3 May
3-5 wk
24 May
1 wk after
Garden cosmos
Cosmos bipinnatus
Season too short
6 – 20 Apr
16 Apr
4-6 wk
18 May
0 wk
31 May
2 wk after
Scarlet milkweed
Asclepias curassavica
Season too short
8 Mar – 5 Apr
8-12 wk
31 May
2 wk after
Bee balm
Monarda didyma
23 Feb – 23 Mar
6 Apr
8-12 wk
18 May
1 Jun
0 wk
12 Jun
4 wk after
Yarrow
Achillea millefolium
23 Mar – 6 Apr
30 Mar
6-8 wk
18 May
0 wk
31 May
2 wk after
Safflower
Carthamus tinctorius
18 May
8 Jun
0 wk
19 May
29 May
0 wk
Iceland poppy
Papaver nudicaule
Season too short
23 Mar – 6 Apr
19 May
6-8 wk
18 May
30 Jun
0 wk
2 May
20 Jun
2 wk before
Bishop's flower
Ammi majus
6 – 20 Apr
24 May
4-6 wk
18 May
21 Jun
0 wk
31 May
11 Jun
2 wk after
Drumsticks
Pycnosorus globosus
Season too short
1 – 15 Mar
10-12 wk
24 May
1 wk after
Sunflower
Helianthus annuus
Fleece
26 Apr – 3 May
26 May
3-4 wk
24 May
16 Jun
1 wk after
31 May
6 Jun
2 wk after
China aster
Callistephus chinensis
Fleece
29 Mar – 12 Apr
15 May
6-8 wk
24 May
26 Jun
1 wk after
12 Jun
16 Jun
4 wk after
Annual phlox
Phlox drummondii
Greenhouse
23 Mar – 6 Apr
8 Apr
6-8 wk
18 May
20 May
0 wk
31 May
2 wk after
Hollyhock
Alcea rosea
23 Mar – 6 Apr
6-8 wk
18 May
0 wk
31 May
2 wk after
Alpine delphinium
Delphinium elatum
23 Feb – 23 Mar
6 Apr
8-12 wk
18 May
1 Jun
0 wk
12 Jun
4 wk after
African marigold
Tagetes erecta
Greenhouse
23 Mar – 6 Apr
8 Apr
6-8 wk
18 May
20 May
0 wk
Black-eyed Susan
Rudbeckia hirta
Fleece
23 Mar – 6 Apr
5 May
6-8 wk
18 May
16 Jun
0 wk
12 Jun
4 wk after
Wood sage
Salvia nemorosa
9 – 23 Mar
27 Mar
8-10 wk
18 May
22 May
0 wk
12 Jun
4 wk after
Black-eyed susan vine
Thunbergia alata
Season too short
15 Mar – 12 Apr
6-10 wk
24 May
1 wk after
California goldenpoppy
Eschscholzia californica
18 May
26 Jun
0 wk
19 May
16 Jun
0 wk
Painted tongue
Salpiglossis sinuata
Fleece
15 – 29 Mar
11 Apr
8-10 wk
24 May
6 Jun
1 wk after
Water forget-me-not
Myosotis scorpioides
23 Mar – 6 Apr
29 Apr
6-8 wk
18 May
10 Jun
0 wk
31 May
31 May
2 wk after