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Rel. frost
Last spring frost (0°C) 31 May Frost 9 of 10 years · 20 years of data
Frost-free season 56 days 31 May – 26 Jul
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)
12 – 26 Apr
14 Jun
5-7 wk
31 May
19 Jul
0 wk
4 Jun
9 Jul
1 wk after
Broccoli
Brassica oleracea (Italica-gruppen)
19 Apr – 3 May
26 Jun
4-6 wk
31 May
24 Jul
0 wk
4 Jun
14 Jul
1 wk after
Chili pepper
Capsicum annuum
Season too short
14 Mar – 11 Apr
8-12 wk
6 Jun
1 wk after
Curly Kale
Brassica oleracea (Curly Kale-gruppen)
12 – 26 Apr
10 Jun
5-7 wk
31 May
15 Jul
0 wk
31 May
5 Jul
0 wk
Garden cucumber
Cucumis sativus
Season too short
9 – 16 May
3-4 wk
6 Jun
1 wk after
Florence Fennel
Foeniculum vulgare
Greenhouse
2 – 9 May
23 May
4-5 wk
6 Jun
20 Jun
1 wk after
21 Jun
3 wk after
Butter bean
Phaseolus lunatus
Season too short
11 – 18 Jun
3-4 wk
9 Jul
6 wk after
Onion
Allium cepa (Cepa-gruppen)
Season too short
8 Mar – 5 Apr
15 Mar
8-12 wk
31 May
0 wk
31 May
0 wk
Onion (sets)
Allium cepa (Cepa-gruppen)
4 Jun
1 wk after
4 Jun
1 wk after
Maize
Zea mays
Season too short
3 – 10 May
3-4 wk
31 May
0 wk
Swiss Chard
Beta vulgaris (Flavescens-gruppen)
5 – 12 May
7 Jun
3-4 wk
2 Jun
28 Jun
0 wk
21 Jun
3 wk after
Carrot
Daucus carota subsp. sativus var. sativus
31 May
20 Jun
0 wk
31 May
10 Jun
0 wk
Palm Kale
Brassica oleracea (Palm Kale-gruppen)
12 – 26 Apr
10 Jun
5-7 wk
31 May
15 Jul
0 wk
31 May
5 Jul
0 wk
Potato
Solanum tuberosum
Fleece
23 Apr – 7 May
8 May
4-6 wk
4 Jun
5 Jun
1 wk after
4 Jun
1 wk after
Ornamental Kale
Brassica oleracea (Ornamental-gruppen)
12 – 26 Apr
5 Jun
5-7 wk
31 May
10 Jul
0 wk
4 Jun
30 Jun
1 wk after
Pumpkin
Cucurbita pepo
Season too short
9 – 16 May
3-4 wk
6 Jun
1 wk after
Beetroot
Beta vulgaris (Conditiva-gruppen)
Fleece
3 – 10 May
3 May
3-4 wk
31 May
0 wk
10 Jun
1 wk after
Red Cabbage
Brassica oleracea (Red Cabbage-gruppen)
19 Apr – 3 May
22 Jun
4-6 wk
31 May
20 Jul
0 wk
Lettuce
Lactuca sativa
3 – 10 May
24 Jun
3-4 wk
31 May
15 Jul
0 wk
4 Jun
5 Jul
1 wk after
Savoy Cabbage
Brassica oleracea (Savoy Cabbage-gruppen)
19 Apr – 3 May
22 Jun
4-6 wk
31 May
20 Jul
0 wk
Shallot (bulbs)
Allium cepa (Aggregatum-gruppen)
3 – 17 May
6 May
2-4 wk
31 May
0 wk
31 May
0 wk
Shallot (sets)
Allium cepa (Aggregatum-gruppen)
4 Jun
1 wk after
4 Jun
1 wk after
Spinach
Spinacia oleracea
3 – 10 May
18 Jul
3-4 wk
31 May
8 Aug
0 wk
27 May
29 Jul
1 wk before
Sweet potato
Ipomoea batatas
2 – 16 Jul
4-6 wk
13 Aug
11 wk after
Garden tomato
Solanum lycopersicum
Season too short
5 – 19 Apr
6-8 wk
31 May
0 wk
Tomatillo
Physalis ixocarpa
Common Bean
Phaseolus vulgaris
Season too short
3 – 17 May
2-4 wk
31 May
0 wk
21 Jun
3 wk after
White Cabbage
Brassica oleracea (White Cabbage-gruppen)
19 Apr – 3 May
22 Jun
4-6 wk
31 May
20 Jul
0 wk
Garden pea
Pisum sativum
3 – 10 May
9 Jun
3-4 wk
31 May
30 Jun
0 wk
4 Jun
20 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
25 Apr – 9 May
4-6 wk
6 Jun
1 wk after
Lemon balm
Melissa officinalis
22 Mar – 5 Apr
5 May
8-10 wk
31 May
30 Jun
0 wk
5 Jul
5 wk after
Dill
Anethum graveolens
4 Jun
28 Jun
1 wk after
Wild chives
Allium schoenoprasum
5 – 19 Apr
3 Jun
6-8 wk
31 May
15 Jul
0 wk
4 Jun
5 Jul
1 wk after
Spearmint
Mentha spicata
8 Mar – 5 Apr
19 May
8-12 wk
31 May
14 Jul
0 wk
5 Jul
5 wk after
Coriander
Coriandrum sativum
31 May
18 Jul
0 wk
21 Jun
8 Jul
3 wk after
Garden sage
Salvia officinalis
24 Mar – 7 Apr
5 May
8-10 wk
2 Jun
30 Jun
0 wk
Common thyme
Thymus vulgaris
22 Mar – 5 Apr
10 May
8-10 wk
31 May
5 Jul
0 wk
Oregano
Origanum vulgare
5 – 19 Apr
23 May
6-8 wk
31 May
4 Jul
0 wk
5 Jul
5 wk after
Parsley
Petroselinum crispum
5 – 19 Apr
23 May
6-8 wk
31 May
4 Jul
0 wk
4 Jun
24 Jun
1 wk after
Rosemary
Salvia rosmarinus
Fleece
22 Feb – 22 Mar
17 Mar
10-14 wk
31 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
9 – 16 May
3-4 wk
6 Jun
1 wk after
Cornflower
Centaurea cyanus
31 May
14 Jul
0 wk
4 Jun
4 Jul
1 wk after
Statice
Limonium sinuatum
Season too short
22 Mar – 5 Apr
8-10 wk
31 May
0 wk
Sweet William
Dianthus barbatus
5 – 19 Apr
6-8 wk
31 May
0 wk
16 Jun
2 wk after
Snow-on-the-mountain
Euphorbia marginata
Season too short
5 – 19 Apr
6-8 wk
31 May
0 wk
11 Jul
6 wk after
Pinnate dahlia
Dahlia × pinnata
Season too short
5 – 19 Apr
6-8 wk
31 May
0 wk
Pinnate dahlia (tubers)
Dahlia × pinnata
Season too short
15 Apr – 13 May
4-8 wk
10 Jun
1 wk after
10 Jun
1 wk after
Foxglove
Digitalis purpurea
22 Mar – 5 Apr
8-10 wk
31 May
0 wk
21 Jun
3 wk after
Busy lizzie
Impatiens walleriana
Season too short
14 Mar – 11 Apr
27 Mar
8-12 wk
6 Jun
1 wk after
Creeping zinnia
Sanvitalia procumbens
Season too short
5 – 19 Apr
6-8 wk
31 May
0 wk
Hyacinth bean
Dolichos lablab
Season too short
2 – 16 May
4-6 wk
13 Jun
2 wk after
Chinese lantern
Physalis alkekengi
Fleece
22 Mar – 5 Apr
5 Apr
8-10 wk
31 May
31 May
0 wk
Love in a mist
Nigella damascena
31 May
15 Jun
0 wk
4 Jun
5 Jun
1 wk after
Strawflower
Xerochrysum bracteatum
Season too short
5 – 19 Apr
6-8 wk
31 May
0 wk
11 Jul
6 wk after
Purple-top vervain
Verbena bonariensis
Fleece
8 Mar – 5 Apr
5 Apr
8-12 wk
31 May
31 May
0 wk
Cardoon
Cynara cardunculus
Season too short
8 Mar – 5 Apr
15 Mar
8-12 wk
31 May
0 wk
Regal-foxtail
Ptilotus nobilis
Season too short
14 Mar – 11 Apr
8-12 wk
6 Jun
1 wk after
Globe amaranth
Gomphrena globosa
Season too short
11 – 25 Apr
6-8 wk
6 Jun
1 wk after
Corn poppy
Papaver rhoeas
31 May
30 Jun
0 wk
4 Jun
20 Jun
1 wk after
Snapdragon
Antirrhinum majus
8 Mar – 5 Apr
25 Apr
8-12 wk
31 May
20 Jun
0 wk
16 Jun
2 wk after
Flossflower
Ageratum houstonianum
Season too short
28 Mar – 11 Apr
8-10 wk
6 Jun
1 wk after
Sweet pea
Lathyrus odoratus
5 – 26 Apr
30 May
5-8 wk
31 May
4 Jul
0 wk
Stock
Matthiola incana
5 – 19 Apr
19 May
6-8 wk
31 May
30 Jun
0 wk
21 Jun
3 wk after
Wormwood
Artemisia absinthium
5 – 19 Apr
4 May
6-8 wk
31 May
15 Jun
0 wk
21 Jun
3 wk after
Mexican sunflower
Tithonia rotundifolia
Season too short
25 Apr – 9 May
4-6 wk
6 Jun
1 wk after
Garden pansy
Viola × wittrockiana
22 Mar – 5 Apr
19 May
8-10 wk
31 May
14 Jul
0 wk
16 Jun
4 Jul
2 wk after
Petunia
Petunia
Season too short
8 Mar – 5 Apr
8-12 wk
31 May
0 wk
Sweet Scabious
Scabiosa atropurpurea
Fleece
5 – 19 Apr
19 Apr
6-8 wk
31 May
31 May
0 wk
5 Jul
5 wk after
Common zinnia
Zinnia elegans
Season too short
19 Apr – 3 May
4-6 wk
31 May
0 wk
Common morning glory
Ipomoea purpurea
Season too short
2 – 16 May
3-5 wk
6 Jun
1 wk after
Garden cosmos
Cosmos bipinnatus
Season too short
19 Apr – 3 May
4-6 wk
31 May
0 wk
21 Jun
3 wk after
Scarlet milkweed
Asclepias curassavica
Season too short
21 Mar – 18 Apr
8-12 wk
13 Jun
2 wk after
Bee balm
Monarda didyma
8 Mar – 5 Apr
5 Apr
8-12 wk
31 May
31 May
0 wk
5 Jul
5 wk after
Yarrow
Achillea millefolium
5 – 19 Apr
6-8 wk
31 May
0 wk
21 Jun
3 wk after
Safflower
Carthamus tinctorius
31 May
9 Jun
0 wk
4 Jun
1 wk after
Iceland poppy
Papaver nudicaule
Season too short
5 – 19 Apr
24 May
6-8 wk
31 May
5 Jul
0 wk
13 May
25 Jun
3 wk before
Bishop's flower
Ammi majus
19 Apr – 3 May
23 May
4-6 wk
31 May
20 Jun
0 wk
21 Jun
3 wk after
Drumsticks
Pycnosorus globosus
Season too short
14 – 28 Mar
10-12 wk
6 Jun
1 wk after
Sunflower
Helianthus annuus
Fleece
9 – 16 May
25 May
3-4 wk
6 Jun
15 Jun
1 wk after
21 Jun
3 wk after
China aster
Callistephus chinensis
Fleece
11 – 25 Apr
14 May
6-8 wk
6 Jun
25 Jun
1 wk after
5 Jul
5 wk after
Annual phlox
Phlox drummondii
Season too short
5 – 19 Apr
6-8 wk
31 May
0 wk
21 Jun
3 wk after
Hollyhock
Alcea rosea
5 – 19 Apr
6-8 wk
31 May
0 wk
21 Jun
3 wk after
Alpine delphinium
Delphinium elatum
8 Mar – 5 Apr
5 Apr
8-12 wk
31 May
31 May
0 wk
5 Jul
5 wk after
African marigold
Tagetes erecta
Season too short
5 – 19 Apr
6-8 wk
31 May
0 wk
Black-eyed Susan
Rudbeckia hirta
7 – 21 Apr
18 Apr
6-8 wk
2 Jun
0 wk
19 Jul
7 wk after
Wood sage
Salvia nemorosa
22 Mar – 5 Apr
26 Mar
8-10 wk
31 May
0 wk
5 Jul
5 wk after
Black-eyed susan vine
Thunbergia alata
Season too short
28 Mar – 25 Apr
6-10 wk
6 Jun
1 wk after
California goldenpoppy
Eschscholzia californica
31 May
25 Jun
0 wk
4 Jun
15 Jun
1 wk after
Painted tongue
Salpiglossis sinuata
Fleece
28 Mar – 11 Apr
13 Apr
8-10 wk
6 Jun
8 Jun
1 wk after
Water forget-me-not
Myosotis scorpioides
5 – 19 Apr
4 May
6-8 wk
31 May
15 Jun
0 wk
21 Jun
3 wk after