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Rel. frost
Last spring frost (0°C) 5 May Frost 9 of 10 years · 20 years of data
Frost-free season 128 days 5 May – 10 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)
17 – 31 Mar
13 Jun
5-7 wk
5 May
18 Jul
0 wk
6 May
8 Jul
0 wk
Broccoli
Brassica oleracea (Italica-gruppen)
24 Mar – 7 Apr
25 Jun
4-6 wk
5 May
23 Jul
0 wk
6 May
13 Jul
0 wk
Chili pepper
Capsicum annuum
Season too short
21 Feb – 21 Mar
8-12 wk
16 May
2 wk after
Curly Kale
Brassica oleracea (Curly Kale-gruppen)
17 – 31 Mar
8 Jun
5-7 wk
5 May
13 Jul
0 wk
5 May
3 Jul
0 wk
Garden cucumber
Cucumis sativus
Season too short
18 – 25 Apr
3-4 wk
16 May
2 wk after
Florence Fennel
Foeniculum vulgare
4 – 11 May
14 May
4-5 wk
8 Jun
11 Jun
5 wk after
17 Jun
6 wk after
Butter bean
Phaseolus lunatus
Season too short
18 – 25 May
3-4 wk
15 Jun
6 wk after
Onion
Allium cepa (Cepa-gruppen)
10 Feb – 10 Mar
21 Mar
8-12 wk
5 May
16 May
0 wk
18 May
2 wk after
Onion (sets)
Allium cepa (Cepa-gruppen)
6 May
5 Jun
0 wk
6 May
26 May
0 wk
Maize
Zea mays
Season too short
11 – 18 Apr
3-4 wk
9 May
1 wk after
Swiss Chard
Beta vulgaris (Flavescens-gruppen)
13 – 20 Apr
21 Jun
3-4 wk
11 May
12 Jul
1 wk after
18 May
2 Jul
2 wk after
Carrot
Daucus carota subsp. sativus var. sativus
5 May
3 Jul
0 wk
5 May
23 Jun
0 wk
Palm Kale
Brassica oleracea (Palm Kale-gruppen)
17 – 31 Mar
8 Jun
5-7 wk
5 May
13 Jul
0 wk
5 May
3 Jul
0 wk
Potato
Solanum tuberosum
3 – 17 Apr
19 May
4-6 wk
15 May
16 Jun
1 wk after
15 May
6 Jun
1 wk after
Ornamental Kale
Brassica oleracea (Ornamental-gruppen)
17 – 31 Mar
18 Jun
5-7 wk
5 May
23 Jul
0 wk
6 May
13 Jul
0 wk
Pumpkin
Cucurbita pepo
Greenhouse
18 – 25 Apr
7 May
3-4 wk
16 May
28 May
2 wk after
Beetroot
Beta vulgaris (Conditiva-gruppen)
13 – 20 Apr
22 May
3-4 wk
11 May
12 Jun
1 wk after
18 May
2 Jun
2 wk after
Red Cabbage
Brassica oleracea (Red Cabbage-gruppen)
24 Mar – 7 Apr
20 Jun
4-6 wk
5 May
18 Jul
0 wk
Lettuce
Lactuca sativa
7 – 14 Apr
7 Jul
3-4 wk
5 May
28 Jul
0 wk
6 May
18 Jul
0 wk
Savoy Cabbage
Brassica oleracea (Savoy Cabbage-gruppen)
24 Mar – 7 Apr
20 Jun
4-6 wk
5 May
18 Jul
0 wk
Shallot (bulbs)
Allium cepa (Aggregatum-gruppen)
7 – 21 Apr
25 May
2-4 wk
5 May
8 Jun
0 wk
5 May
29 May
0 wk
Shallot (sets)
Allium cepa (Aggregatum-gruppen)
6 May
5 Jun
0 wk
6 May
26 May
0 wk
Spinach
Spinacia oleracea
7 – 14 Apr
22 Jul
3-4 wk
5 May
12 Aug
0 wk
2 May
2 Aug
0 wk
Sweet potato
Ipomoea batatas
30 May – 13 Jun
4-6 wk
11 Jul
10 wk after
Garden tomato
Solanum lycopersicum
Season too short
14 – 28 Mar
6-8 wk
9 May
1 wk after
Tomatillo
Physalis ixocarpa
Common Bean
Phaseolus vulgaris
Greenhouse
11 – 25 Apr
9 May
2-4 wk
9 May
23 May
1 wk after
18 May
2 wk after
White Cabbage
Brassica oleracea (White Cabbage-gruppen)
24 Mar – 7 Apr
20 Jun
4-6 wk
5 May
18 Jul
0 wk
Garden pea
Pisum sativum
7 – 14 Apr
22 Jun
3-4 wk
5 May
13 Jul
0 wk
6 May
3 Jul
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
4 – 18 Apr
15 Apr
4-6 wk
16 May
2 wk after
Lemon balm
Melissa officinalis
24 Feb – 10 Mar
18 May
8-10 wk
5 May
13 Jul
0 wk
30 May
3 Jul
4 wk after
Dill
Anethum graveolens
6 May
12 Jul
0 wk
Wild chives
Allium schoenoprasum
10 – 24 Mar
1 Jun
6-8 wk
5 May
13 Jul
0 wk
6 May
3 Jul
0 wk
Spearmint
Mentha spicata
10 Feb – 10 Mar
18 May
8-12 wk
5 May
13 Jul
0 wk
30 May
3 Jul
4 wk after
Coriander
Coriandrum sativum
5 May
1 Aug
0 wk
18 May
22 Jul
2 wk after
Garden sage
Salvia officinalis
2 – 16 Mar
3 May
8-10 wk
11 May
28 Jun
1 wk after
Common thyme
Thymus vulgaris
24 Feb – 10 Mar
8 May
8-10 wk
5 May
3 Jul
0 wk
Oregano
Origanum vulgare
10 – 24 Mar
22 May
6-8 wk
5 May
3 Jul
0 wk
30 May
23 Jun
4 wk after
Parsley
Petroselinum crispum
10 – 24 Mar
22 May
6-8 wk
5 May
3 Jul
0 wk
6 May
23 Jun
0 wk
Rosemary
Salvia rosmarinus
2 Feb – 2 Mar
18 Mar
10-14 wk
11 May
27 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
18 – 25 Apr
22 Apr
3-4 wk
16 May
2 wk after
Cornflower
Centaurea cyanus
5 May
13 Jul
0 wk
6 May
3 Jul
0 wk
Statice
Limonium sinuatum
Greenhouse
28 Feb – 14 Mar
20 Mar
8-10 wk
9 May
15 May
1 wk after
Sweet William
Dianthus barbatus
10 – 24 Mar
6-8 wk
5 May
0 wk
15 May
1 wk after
Snow-on-the-mountain
Euphorbia marginata
Greenhouse
14 – 28 Mar
3 Apr
6-8 wk
9 May
15 May
1 wk after
6 Jun
5 wk after
Pinnate dahlia
Dahlia × pinnata
Fleece
16 – 30 Mar
31 Mar
6-8 wk
11 May
12 May
1 wk after
Pinnate dahlia (tubers)
Dahlia × pinnata
Fleece
23 Mar – 20 Apr
14 Apr
4-8 wk
18 May
2 wk after
18 May
2 wk after
Foxglove
Digitalis purpurea
24 Feb – 10 Mar
8-10 wk
5 May
0 wk
18 May
2 wk after
Busy lizzie
Impatiens walleriana
Fleece
2 – 30 Mar
3 May
8-12 wk
25 May
28 Jun
3 wk after
Creeping zinnia
Sanvitalia procumbens
Greenhouse
14 – 28 Mar
13 Apr
6-8 wk
9 May
25 May
1 wk after
Hyacinth bean
Dolichos lablab
Season too short
13 – 27 Apr
4-6 wk
25 May
3 wk after
Chinese lantern
Physalis alkekengi
2 – 16 Mar
7 Apr
8-10 wk
11 May
2 Jun
1 wk after
Love in a mist
Nigella damascena
5 May
28 Jun
0 wk
6 May
18 Jun
0 wk
Strawflower
Xerochrysum bracteatum
Greenhouse
14 – 28 Mar
24 Mar
6-8 wk
9 May
1 wk after
6 Jun
5 wk after
Purple-top vervain
Verbena bonariensis
16 Feb – 16 Mar
7 Apr
8-12 wk
11 May
2 Jun
1 wk after
Cardoon
Cynara cardunculus
Greenhouse
14 Feb – 14 Mar
19 Mar
8-12 wk
9 May
14 May
1 wk after
Regal-foxtail
Ptilotus nobilis
Season too short
21 Feb – 21 Mar
8 Mar
8-12 wk
16 May
2 wk after
Globe amaranth
Gomphrena globosa
Season too short
21 Mar – 4 Apr
22 Mar
6-8 wk
16 May
2 wk after
Corn poppy
Papaver rhoeas
5 May
13 Jul
0 wk
6 May
3 Jul
0 wk
Snapdragon
Antirrhinum majus
10 Feb – 10 Mar
8 May
8-12 wk
5 May
3 Jul
0 wk
15 May
23 Jun
1 wk after
Flossflower
Ageratum houstonianum
Greenhouse
7 – 21 Mar
30 Mar
8-10 wk
16 May
25 May
2 wk after
Sweet pea
Lathyrus odoratus
10 – 31 Mar
29 May
5-8 wk
5 May
3 Jul
0 wk
Stock
Matthiola incana
10 – 24 Mar
1 Jun
6-8 wk
5 May
13 Jul
0 wk
18 May
3 Jul
2 wk after
Wormwood
Artemisia absinthium
10 – 24 Mar
2 May
6-8 wk
5 May
13 Jun
0 wk
18 May
3 Jun
2 wk after
Mexican sunflower
Tithonia rotundifolia
Season too short
4 – 18 Apr
4-6 wk
16 May
2 wk after
Garden pansy
Viola × wittrockiana
24 Feb – 10 Mar
18 May
8-10 wk
5 May
13 Jul
0 wk
15 May
3 Jul
1 wk after
Petunia
Petunia
Greenhouse
14 Feb – 14 Mar
20 Mar
8-12 wk
9 May
15 May
1 wk after
Sweet Scabious
Scabiosa atropurpurea
16 – 30 Mar
21 Apr
6-8 wk
11 May
2 Jun
1 wk after
17 Jun
6 wk after
Common zinnia
Zinnia elegans
Greenhouse
28 Mar – 11 Apr
24 Apr
4-6 wk
9 May
22 May
1 wk after
Common morning glory
Ipomoea purpurea
Season too short
11 – 25 Apr
22 Apr
3-5 wk
16 May
2 wk after
Garden cosmos
Cosmos bipinnatus
Greenhouse
28 Mar – 11 Apr
7 May
4-6 wk
9 May
4 Jun
1 wk after
18 May
25 May
2 wk after
Scarlet milkweed
Asclepias curassavica
Greenhouse
2 – 30 Mar
7 Apr
8-12 wk
25 May
2 Jun
3 wk after
Bee balm
Monarda didyma
10 Feb – 10 Mar
18 Apr
8-12 wk
5 May
13 Jun
0 wk
30 May
3 Jun
4 wk after
Yarrow
Achillea millefolium
10 – 24 Mar
2 Apr
6-8 wk
5 May
14 May
0 wk
18 May
2 wk after
Safflower
Carthamus tinctorius
5 May
13 Jun
0 wk
6 May
3 Jun
0 wk
Iceland poppy
Papaver nudicaule
Season too short
10 – 24 Mar
22 May
6-8 wk
5 May
3 Jul
0 wk
19 Apr
23 Jun
2 wk before
Bishop's flower
Ammi majus
24 Mar – 7 Apr
5 Jun
4-6 wk
5 May
3 Jul
0 wk
18 May
23 Jun
2 wk after
Drumsticks
Pycnosorus globosus
Season too short
21 Feb – 7 Mar
10-12 wk
16 May
2 wk after
Sunflower
Helianthus annuus
27 Apr – 4 May
26 May
3-4 wk
25 May
16 Jun
3 wk after
30 May
6 Jun
4 wk after
China aster
Callistephus chinensis
30 Mar – 13 Apr
15 May
6-8 wk
25 May
26 Jun
3 wk after
17 Jun
6 wk after
Annual phlox
Phlox drummondii
Fleece
14 – 28 Mar
3 Apr
6-8 wk
9 May
15 May
1 wk after
30 May
4 wk after
Hollyhock
Alcea rosea
10 – 24 Mar
6-8 wk
5 May
0 wk
18 May
2 wk after
Alpine delphinium
Delphinium elatum
10 Feb – 10 Mar
18 Apr
8-12 wk
5 May
13 Jun
0 wk
30 May
3 Jun
4 wk after
African marigold
Tagetes erecta
Greenhouse
14 – 28 Mar
13 Apr
6-8 wk
9 May
25 May
1 wk after
Black-eyed Susan
Rudbeckia hirta
16 – 30 Mar
5 May
6-8 wk
11 May
16 Jun
1 wk after
17 Jun
6 wk after
Wood sage
Salvia nemorosa
24 Feb – 10 Mar
8 Apr
8-10 wk
5 May
3 Jun
0 wk
30 May
4 wk after
Black-eyed susan vine
Thunbergia alata
Season too short
7 Mar – 4 Apr
1 Apr
6-10 wk
16 May
2 wk after
California goldenpoppy
Eschscholzia californica
5 May
7 Jul
0 wk
6 May
27 Jun
0 wk
Painted tongue
Salpiglossis sinuata
16 – 30 Mar
16 Apr
8-10 wk
25 May
11 Jun
3 wk after
Water forget-me-not
Myosotis scorpioides
10 – 24 Mar
2 May
6-8 wk
5 May
13 Jun
0 wk
18 May
3 Jun
2 wk after