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Rel. frost
Last spring frost (0°C) 18 May Frost 9 of 10 years · 20 years of data
Frost-free season 82 days 18 May – 8 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
13 Jun
5-7 wk
18 May
18 Jul
0 wk
22 May
8 Jul
1 wk after
Broccoli
Brassica oleracea (Italica-gruppen)
6 – 20 Apr
25 Jun
4-6 wk
18 May
23 Jul
0 wk
22 May
13 Jul
1 wk after
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
10 Jun
5-7 wk
18 May
15 Jul
0 wk
18 May
5 Jul
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
Fleece
26 Apr – 3 May
13 May
4-5 wk
31 May
10 Jun
2 wk after
22 Jun
5 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)
22 May
1 wk after
22 May
1 wk after
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
9 Jun
3-4 wk
20 May
30 Jun
0 wk
8 Jun
20 Jun
3 wk after
Carrot
Daucus carota subsp. sativus var. sativus
18 May
24 Jun
0 wk
18 May
14 Jun
0 wk
Palm Kale
Brassica oleracea (Palm Kale-gruppen)
30 Mar – 13 Apr
10 Jun
5-7 wk
18 May
15 Jul
0 wk
18 May
5 Jul
0 wk
Potato
Solanum tuberosum
Fleece
10 – 24 Apr
4 May
4-6 wk
22 May
1 Jun
1 wk after
22 May
22 May
1 wk after
Ornamental Kale
Brassica oleracea (Ornamental-gruppen)
30 Mar – 13 Apr
9 Jun
5-7 wk
18 May
14 Jul
0 wk
22 May
4 Jul
1 wk after
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
28 Apr
3-4 wk
18 May
19 May
0 wk
28 May
1 wk after
Red Cabbage
Brassica oleracea (Red Cabbage-gruppen)
6 – 20 Apr
22 Jun
4-6 wk
18 May
20 Jul
0 wk
Lettuce
Lactuca sativa
20 – 27 Apr
28 Jun
3-4 wk
18 May
19 Jul
0 wk
22 May
9 Jul
1 wk after
Savoy Cabbage
Brassica oleracea (Savoy Cabbage-gruppen)
6 – 20 Apr
22 Jun
4-6 wk
18 May
20 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)
22 May
1 wk after
22 May
1 wk after
Spinach
Spinacia oleracea
20 – 27 Apr
16 Jul
3-4 wk
18 May
6 Aug
0 wk
14 May
27 Jul
1 wk before
Sweet potato
Ipomoea batatas
19 Jun – 3 Jul
4-6 wk
31 Jul
11 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
8 Jun
3 wk after
White Cabbage
Brassica oleracea (White Cabbage-gruppen)
6 – 20 Apr
22 Jun
4-6 wk
18 May
20 Jul
0 wk
Garden pea
Pisum sativum
20 – 27 Apr
13 Jun
3-4 wk
18 May
4 Jul
0 wk
22 May
24 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
12 – 26 Apr
4-6 wk
24 May
1 wk after
Lemon balm
Melissa officinalis
9 – 23 Mar
9 May
8-10 wk
18 May
4 Jul
0 wk
22 Jun
24 Jun
5 wk after
Dill
Anethum graveolens
22 May
30 Jun
1 wk after
Wild chives
Allium schoenoprasum
23 Mar – 6 Apr
3 Jun
6-8 wk
18 May
15 Jul
0 wk
22 May
5 Jul
1 wk after
Spearmint
Mentha spicata
23 Feb – 23 Mar
18 May
8-12 wk
18 May
13 Jul
0 wk
22 Jun
3 Jul
5 wk after
Coriander
Coriandrum sativum
18 May
20 Jul
0 wk
8 Jun
10 Jul
3 wk after
Garden sage
Salvia officinalis
11 – 25 Mar
5 May
8-10 wk
20 May
30 Jun
0 wk
Common thyme
Thymus vulgaris
9 – 23 Mar
10 May
8-10 wk
18 May
5 Jul
0 wk
Oregano
Origanum vulgare
23 Mar – 6 Apr
22 May
6-8 wk
18 May
3 Jul
0 wk
22 Jun
23 Jun
5 wk after
Parsley
Petroselinum crispum
23 Mar – 6 Apr
22 May
6-8 wk
18 May
3 Jul
0 wk
22 May
23 Jun
1 wk after
Rosemary
Salvia rosmarinus
Fleece
9 Feb – 9 Mar
20 Mar
10-14 wk
18 May
29 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
13 Jul
0 wk
22 May
3 Jul
1 wk after
Statice
Limonium sinuatum
Season too short
9 – 23 Mar
8-10 wk
18 May
0 wk
Sweet William
Dianthus barbatus
23 Mar – 6 Apr
6-8 wk
18 May
0 wk
3 Jun
2 wk after
Snow-on-the-mountain
Euphorbia marginata
Season too short
23 Mar – 6 Apr
6-8 wk
18 May
0 wk
28 Jun
6 wk after
Pinnate dahlia
Dahlia × pinnata
Season too short
23 Mar – 6 Apr
6-8 wk
18 May
0 wk
Pinnate dahlia (tubers)
Dahlia × pinnata
Season too short
2 – 30 Apr
4 Apr
4-8 wk
28 May
1 wk after
28 May
1 wk after
Foxglove
Digitalis purpurea
9 – 23 Mar
8-10 wk
18 May
0 wk
8 Jun
3 wk after
Busy lizzie
Impatiens walleriana
Season too short
1 – 29 Mar
29 Mar
8-12 wk
24 May
24 May
1 wk after
Creeping zinnia
Sanvitalia procumbens
Season too short
23 Mar – 6 Apr
6-8 wk
18 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
11 – 25 Mar
26 Mar
8-10 wk
20 May
21 May
0 wk
Love in a mist
Nigella damascena
18 May
19 Jun
0 wk
22 May
9 Jun
1 wk after
Strawflower
Xerochrysum bracteatum
Season too short
23 Mar – 6 Apr
6-8 wk
18 May
0 wk
28 Jun
6 wk after
Purple-top vervain
Verbena bonariensis
25 Feb – 25 Mar
26 Mar
8-12 wk
20 May
21 May
0 wk
Cardoon
Cynara cardunculus
Season too short
23 Feb – 23 Mar
13 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
4 Jul
0 wk
22 May
24 Jun
1 wk after
Snapdragon
Antirrhinum majus
23 Feb – 23 Mar
29 Apr
8-12 wk
18 May
24 Jun
0 wk
3 Jun
14 Jun
2 wk after
Flossflower
Ageratum houstonianum
Season too short
15 – 29 Mar
8-10 wk
24 May
1 wk after
Sweet pea
Lathyrus odoratus
23 Mar – 13 Apr
29 May
5-8 wk
18 May
3 Jul
0 wk
Stock
Matthiola incana
23 Mar – 6 Apr
23 May
6-8 wk
18 May
4 Jul
0 wk
8 Jun
24 Jun
3 wk after
Wormwood
Artemisia absinthium
23 Mar – 6 Apr
4 May
6-8 wk
18 May
15 Jun
0 wk
8 Jun
3 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
20 May
8-10 wk
18 May
15 Jul
0 wk
3 Jun
5 Jul
2 wk after
Petunia
Petunia
Season too short
23 Feb – 23 Mar
8-12 wk
18 May
0 wk
Sweet Scabious
Scabiosa atropurpurea
25 Mar – 8 Apr
9 Apr
6-8 wk
20 May
21 May
0 wk
6 Jul
7 wk after
Common zinnia
Zinnia elegans
Season too short
6 – 20 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
4-6 wk
18 May
0 wk
8 Jun
3 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
9 Apr
8-12 wk
18 May
4 Jun
0 wk
22 Jun
5 wk after
Yarrow
Achillea millefolium
23 Mar – 6 Apr
4 Apr
6-8 wk
18 May
0 wk
8 Jun
3 wk after
Safflower
Carthamus tinctorius
18 May
7 Jun
0 wk
22 May
28 May
1 wk after
Iceland poppy
Papaver nudicaule
Season too short
23 Mar – 6 Apr
24 May
6-8 wk
18 May
5 Jul
0 wk
30 Apr
25 Jun
3 wk before
Bishop's flower
Ammi majus
6 – 20 Apr
27 May
4-6 wk
18 May
24 Jun
0 wk
8 Jun
14 Jun
3 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
28 May
3-4 wk
24 May
18 Jun
1 wk after
8 Jun
8 Jun
3 wk after
China aster
Callistephus chinensis
5 – 19 Apr
29 Apr
6-8 wk
31 May
10 Jun
2 wk after
6 Jul
7 wk after
Annual phlox
Phlox drummondii
Season too short
23 Mar – 6 Apr
6-8 wk
18 May
0 wk
8 Jun
3 wk after
Hollyhock
Alcea rosea
23 Mar – 6 Apr
6-8 wk
18 May
0 wk
8 Jun
3 wk after
Alpine delphinium
Delphinium elatum
23 Feb – 23 Mar
9 Apr
8-12 wk
18 May
4 Jun
0 wk
22 Jun
5 wk after
African marigold
Tagetes erecta
Season too short
23 Mar – 6 Apr
6-8 wk
18 May
0 wk
Black-eyed Susan
Rudbeckia hirta
25 Mar – 8 Apr
19 Apr
6-8 wk
20 May
31 May
0 wk
6 Jul
7 wk after
Wood sage
Salvia nemorosa
9 – 23 Mar
30 Mar
8-10 wk
18 May
25 May
0 wk
22 Jun
5 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
28 Jun
0 wk
22 May
18 Jun
1 wk after
Painted tongue
Salpiglossis sinuata
Fleece
15 – 29 Mar
15 Apr
8-10 wk
24 May
10 Jun
1 wk after
Water forget-me-not
Myosotis scorpioides
23 Mar – 6 Apr
4 May
6-8 wk
18 May
15 Jun
0 wk
8 Jun
3 wk after