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Rel. frost
Last spring frost (0°C) 8 May Frost 9 of 10 years · 20 years of data
Frost-free season 117 days 8 May – 2 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)
20 Mar – 3 Apr
16 Jun
5-7 wk
8 May
21 Jul
0 wk
1 May
11 Jul
1 wk before
Broccoli
Brassica oleracea (Italica-gruppen)
27 Mar – 10 Apr
28 Jun
4-6 wk
8 May
26 Jul
0 wk
1 May
16 Jul
1 wk before
Chili pepper
Capsicum annuum
Season too short
23 Feb – 23 Mar
8-12 wk
18 May
1 wk after
Curly Kale
Brassica oleracea (Curly Kale-gruppen)
20 Mar – 3 Apr
11 Jun
5-7 wk
8 May
16 Jul
0 wk
26 Apr
6 Jul
2 wk before
Garden cucumber
Cucumis sativus
Season too short
20 – 27 Apr
3-4 wk
18 May
1 wk after
Florence Fennel
Foeniculum vulgare
Fleece
23 – 30 Apr
19 May
4-5 wk
28 May
16 Jun
3 wk after
29 May
6 Jun
3 wk after
Butter bean
Phaseolus lunatus
Season too short
21 – 28 May
3-4 wk
18 Jun
6 wk after
Onion
Allium cepa (Cepa-gruppen)
13 Feb – 13 Mar
20 Mar
8-12 wk
8 May
15 May
0 wk
18 May
1 wk after
Onion (sets)
Allium cepa (Cepa-gruppen)
1 May
4 Jun
1 wk before
1 May
25 May
1 wk before
Maize
Zea mays
Season too short
12 – 19 Apr
3-4 wk
10 May
0 wk
Swiss Chard
Beta vulgaris (Flavescens-gruppen)
15 – 22 Apr
15 Jun
3-4 wk
13 May
6 Jul
1 wk after
18 May
26 Jun
1 wk after
Carrot
Daucus carota subsp. sativus var. sativus
8 May
28 Jun
0 wk
26 Apr
18 Jun
2 wk before
Palm Kale
Brassica oleracea (Palm Kale-gruppen)
20 Mar – 3 Apr
11 Jun
5-7 wk
8 May
16 Jul
0 wk
26 Apr
6 Jul
2 wk before
Potato
Solanum tuberosum
1 – 15 Apr
17 May
4-6 wk
13 May
14 Jun
1 wk after
13 May
4 Jun
1 wk after
Ornamental Kale
Brassica oleracea (Ornamental-gruppen)
20 Mar – 3 Apr
13 Jun
5-7 wk
8 May
18 Jul
0 wk
1 May
8 Jul
1 wk before
Pumpkin
Cucurbita pepo
Season too short
20 – 27 Apr
3-4 wk
18 May
1 wk after
Beetroot
Beta vulgaris (Conditiva-gruppen)
15 – 22 Apr
22 May
3-4 wk
13 May
12 Jun
1 wk after
18 May
2 Jun
1 wk after
Red Cabbage
Brassica oleracea (Red Cabbage-gruppen)
27 Mar – 10 Apr
23 Jun
4-6 wk
8 May
21 Jul
0 wk
Lettuce
Lactuca sativa
10 – 17 Apr
2 Jul
3-4 wk
8 May
23 Jul
0 wk
1 May
13 Jul
1 wk before
Savoy Cabbage
Brassica oleracea (Savoy Cabbage-gruppen)
27 Mar – 10 Apr
23 Jun
4-6 wk
8 May
21 Jul
0 wk
Shallot (bulbs)
Allium cepa (Aggregatum-gruppen)
29 Mar – 12 Apr
23 May
2-4 wk
26 Apr
6 Jun
2 wk before
26 Apr
27 May
2 wk before
Shallot (sets)
Allium cepa (Aggregatum-gruppen)
1 May
4 Jun
1 wk before
1 May
25 May
1 wk before
Spinach
Spinacia oleracea
10 – 17 Apr
25 Jul
3-4 wk
8 May
15 Aug
0 wk
20 Apr
5 Aug
3 wk before
Sweet potato
Ipomoea batatas
4 – 18 Jun
4-6 wk
16 Jul
10 wk after
Garden tomato
Solanum lycopersicum
Season too short
15 – 29 Mar
6-8 wk
10 May
0 wk
Tomatillo
Physalis ixocarpa
Common Bean
Phaseolus vulgaris
Season too short
12 – 26 Apr
2-4 wk
10 May
0 wk
18 May
1 wk after
White Cabbage
Brassica oleracea (White Cabbage-gruppen)
27 Mar – 10 Apr
23 Jun
4-6 wk
8 May
21 Jul
0 wk
Garden pea
Pisum sativum
10 – 17 Apr
17 Jun
3-4 wk
8 May
8 Jul
0 wk
1 May
28 Jun
1 wk before

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
6 – 20 Apr
4-6 wk
18 May
1 wk after
Lemon balm
Melissa officinalis
27 Feb – 13 Mar
13 May
8-10 wk
8 May
8 Jul
0 wk
29 May
28 Jun
3 wk after
Dill
Anethum graveolens
1 May
6 Jul
1 wk before
Wild chives
Allium schoenoprasum
13 – 27 Mar
4 Jun
6-8 wk
8 May
16 Jul
0 wk
1 May
6 Jul
1 wk before
Spearmint
Mentha spicata
13 Feb – 13 Mar
21 May
8-12 wk
8 May
16 Jul
0 wk
29 May
6 Jul
3 wk after
Coriander
Coriandrum sativum
8 May
26 Jul
0 wk
18 May
16 Jul
1 wk after
Garden sage
Salvia officinalis
4 – 18 Mar
6 May
8-10 wk
13 May
1 Jul
1 wk after
Common thyme
Thymus vulgaris
27 Feb – 13 Mar
11 May
8-10 wk
8 May
6 Jul
0 wk
Oregano
Origanum vulgare
13 – 27 Mar
25 May
6-8 wk
8 May
6 Jul
0 wk
29 May
26 Jun
3 wk after
Parsley
Petroselinum crispum
13 – 27 Mar
25 May
6-8 wk
8 May
6 Jul
0 wk
1 May
26 Jun
1 wk before
Rosemary
Salvia rosmarinus
4 Feb – 4 Mar
16 Mar
10-14 wk
13 May
25 May
1 wk after

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
20 – 27 Apr
3-4 wk
18 May
1 wk after
Cornflower
Centaurea cyanus
8 May
16 Jul
0 wk
1 May
6 Jul
1 wk before
Statice
Limonium sinuatum
Greenhouse
1 – 15 Mar
26 Mar
8-10 wk
10 May
21 May
0 wk
Sweet William
Dianthus barbatus
13 – 27 Mar
6-8 wk
8 May
0 wk
13 May
1 wk after
Snow-on-the-mountain
Euphorbia marginata
Greenhouse
15 – 29 Mar
9 Apr
6-8 wk
10 May
21 May
0 wk
5 Jun
4 wk after
Pinnate dahlia
Dahlia × pinnata
Fleece
18 Mar – 1 Apr
27 Mar
6-8 wk
13 May
1 wk after
Pinnate dahlia (tubers)
Dahlia × pinnata
Fleece
23 Mar – 20 Apr
10 Apr
4-8 wk
18 May
1 wk after
18 May
1 wk after
Foxglove
Digitalis purpurea
27 Feb – 13 Mar
8-10 wk
8 May
0 wk
18 May
1 wk after
Busy lizzie
Impatiens walleriana
Greenhouse
23 Feb – 23 Mar
8 May
8-12 wk
18 May
3 Jul
1 wk after
Creeping zinnia
Sanvitalia procumbens
Greenhouse
15 – 29 Mar
19 Apr
6-8 wk
10 May
31 May
0 wk
Hyacinth bean
Dolichos lablab
Season too short
16 – 30 Apr
4-6 wk
28 May
3 wk after
Chinese lantern
Physalis alkekengi
4 – 18 Mar
1 Apr
8-10 wk
13 May
27 May
1 wk after
Love in a mist
Nigella damascena
8 May
23 Jun
0 wk
1 May
13 Jun
1 wk before
Strawflower
Xerochrysum bracteatum
Greenhouse
15 – 29 Mar
30 Mar
6-8 wk
10 May
11 May
0 wk
5 Jun
4 wk after
Purple-top vervain
Verbena bonariensis
18 Feb – 18 Mar
1 Apr
8-12 wk
13 May
27 May
1 wk after
Cardoon
Cynara cardunculus
Greenhouse
15 Feb – 15 Mar
22 Mar
8-12 wk
10 May
17 May
0 wk
Regal-foxtail
Ptilotus nobilis
Season too short
23 Feb – 23 Mar
8-12 wk
18 May
1 wk after
Globe amaranth
Gomphrena globosa
Season too short
23 Mar – 6 Apr
6-8 wk
18 May
1 wk after
Corn poppy
Papaver rhoeas
8 May
8 Jul
0 wk
1 May
28 Jun
1 wk before
Snapdragon
Antirrhinum majus
13 Feb – 13 Mar
3 May
8-12 wk
8 May
28 Jun
0 wk
13 May
18 Jun
1 wk after
Flossflower
Ageratum houstonianum
Greenhouse
9 – 23 Mar
5 Apr
8-10 wk
18 May
31 May
1 wk after
Sweet pea
Lathyrus odoratus
13 Mar – 3 Apr
1 Jun
5-8 wk
8 May
6 Jul
0 wk
Stock
Matthiola incana
13 – 27 Mar
27 May
6-8 wk
8 May
8 Jul
0 wk
18 May
28 Jun
1 wk after
Wormwood
Artemisia absinthium
13 – 27 Mar
5 May
6-8 wk
8 May
16 Jun
0 wk
18 May
6 Jun
1 wk after
Mexican sunflower
Tithonia rotundifolia
Season too short
6 – 20 Apr
4-6 wk
18 May
1 wk after
Garden pansy
Viola × wittrockiana
27 Feb – 13 Mar
21 May
8-10 wk
8 May
16 Jul
0 wk
13 May
6 Jul
1 wk after
Petunia
Petunia
Greenhouse
15 Feb – 15 Mar
26 Mar
8-12 wk
10 May
21 May
0 wk
Sweet Scabious
Scabiosa atropurpurea
18 Mar – 1 Apr
15 Apr
6-8 wk
13 May
27 May
1 wk after
13 Jun
5 wk after
Common zinnia
Zinnia elegans
Greenhouse
29 Mar – 12 Apr
20 Apr
4-6 wk
10 May
18 May
0 wk
Common morning glory
Ipomoea purpurea
Season too short
13 – 27 Apr
3-5 wk
18 May
1 wk after
Garden cosmos
Cosmos bipinnatus
Greenhouse
29 Mar – 12 Apr
29 Apr
4-6 wk
10 May
27 May
0 wk
18 May
1 wk after
Scarlet milkweed
Asclepias curassavica
Season too short
5 Mar – 2 Apr
8-12 wk
28 May
3 wk after
Bee balm
Monarda didyma
13 Feb – 13 Mar
13 Apr
8-12 wk
8 May
8 Jun
0 wk
29 May
29 May
3 wk after
Yarrow
Achillea millefolium
13 – 27 Mar
5 Apr
6-8 wk
8 May
17 May
0 wk
18 May
1 wk after
Safflower
Carthamus tinctorius
8 May
16 Jun
0 wk
1 May
6 Jun
1 wk before
Iceland poppy
Papaver nudicaule
Season too short
13 – 27 Mar
25 May
6-8 wk
8 May
6 Jul
0 wk
30 Mar
26 Jun
6 wk before
Bishop's flower
Ammi majus
27 Mar – 10 Apr
31 May
4-6 wk
8 May
28 Jun
0 wk
18 May
18 Jun
1 wk after
Drumsticks
Pycnosorus globosus
Season too short
23 Feb – 9 Mar
10-12 wk
18 May
1 wk after
Sunflower
Helianthus annuus
30 Apr – 7 May
24 May
3-4 wk
28 May
14 Jun
3 wk after
29 May
4 Jun
3 wk after
China aster
Callistephus chinensis
2 – 16 Apr
13 May
6-8 wk
28 May
24 Jun
3 wk after
13 Jun
14 Jun
5 wk after
Annual phlox
Phlox drummondii
Greenhouse
13 – 27 Mar
19 Apr
6-8 wk
8 May
31 May
0 wk
18 May
21 May
1 wk after
Hollyhock
Alcea rosea
13 – 27 Mar
6-8 wk
8 May
0 wk
18 May
1 wk after
Alpine delphinium
Delphinium elatum
13 Feb – 13 Mar
13 Apr
8-12 wk
8 May
8 Jun
0 wk
29 May
29 May
3 wk after
African marigold
Tagetes erecta
Greenhouse
15 – 29 Mar
19 Apr
6-8 wk
10 May
31 May
0 wk
Black-eyed Susan
Rudbeckia hirta
18 Mar – 1 Apr
3 May
6-8 wk
13 May
14 Jun
1 wk after
13 Jun
5 wk after
Wood sage
Salvia nemorosa
27 Feb – 13 Mar
3 Apr
8-10 wk
8 May
29 May
0 wk
29 May
3 wk after
Black-eyed susan vine
Thunbergia alata
Season too short
9 Mar – 6 Apr
6-10 wk
18 May
1 wk after
California goldenpoppy
Eschscholzia californica
8 May
3 Jul
0 wk
1 May
23 Jun
1 wk before
Painted tongue
Salpiglossis sinuata
Fleece
9 – 23 Mar
21 Apr
8-10 wk
18 May
16 Jun
1 wk after
Water forget-me-not
Myosotis scorpioides
13 – 27 Mar
5 May
6-8 wk
8 May
16 Jun
0 wk
18 May
6 Jun
1 wk after