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Rel. frost
Last spring frost (0°C) 17 May Frost 9 of 10 years · 20 years of data
Frost-free season 101 days 17 May – 26 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)
29 Mar – 12 Apr
13 Jun
5-7 wk
17 May
18 Jul
0 wk
18 May
8 Jul
0 wk
Broccoli
Brassica oleracea (Italica-gruppen)
5 – 19 Apr
25 Jun
4-6 wk
17 May
23 Jul
0 wk
18 May
13 Jul
0 wk
Chili pepper
Capsicum annuum
Season too short
28 Feb – 28 Mar
8-12 wk
23 May
1 wk after
Curly Kale
Brassica oleracea (Curly Kale-gruppen)
29 Mar – 12 Apr
8 Jun
5-7 wk
17 May
13 Jul
0 wk
17 May
3 Jul
0 wk
Garden cucumber
Cucumis sativus
Season too short
25 Apr – 2 May
3-4 wk
23 May
1 wk after
Florence Fennel
Foeniculum vulgare
Fleece
25 Apr – 2 May
20 May
4-5 wk
30 May
17 Jun
2 wk after
11 Jun
4 wk after
Butter bean
Phaseolus lunatus
Season too short
28 May – 4 Jun
3-4 wk
25 Jun
6 wk after
Onion
Allium cepa (Cepa-gruppen)
22 Feb – 22 Mar
15 Mar
8-12 wk
17 May
0 wk
30 May
2 wk after
Onion (sets)
Allium cepa (Cepa-gruppen)
18 May
30 May
0 wk
18 May
20 May
0 wk
Maize
Zea mays
Season too short
19 – 26 Apr
3-4 wk
17 May
0 wk
Swiss Chard
Beta vulgaris (Flavescens-gruppen)
21 – 28 Apr
16 Jun
3-4 wk
19 May
7 Jul
0 wk
30 May
27 Jun
2 wk after
Carrot
Daucus carota subsp. sativus var. sativus
17 May
20 Jun
0 wk
17 May
10 Jun
0 wk
Palm Kale
Brassica oleracea (Palm Kale-gruppen)
29 Mar – 12 Apr
8 Jun
5-7 wk
17 May
13 Jul
0 wk
17 May
3 Jul
0 wk
Potato
Solanum tuberosum
15 – 29 Apr
15 May
4-6 wk
27 May
12 Jun
1 wk after
27 May
2 Jun
1 wk after
Ornamental Kale
Brassica oleracea (Ornamental-gruppen)
29 Mar – 12 Apr
5 Jun
5-7 wk
17 May
10 Jul
0 wk
18 May
30 Jun
0 wk
Pumpkin
Cucurbita pepo
Season too short
25 Apr – 2 May
3-4 wk
23 May
1 wk after
Beetroot
Beta vulgaris (Conditiva-gruppen)
21 – 28 Apr
20 May
3-4 wk
19 May
10 Jun
0 wk
30 May
31 May
2 wk after
Red Cabbage
Brassica oleracea (Red Cabbage-gruppen)
5 – 19 Apr
20 Jun
4-6 wk
17 May
18 Jul
0 wk
Lettuce
Lactuca sativa
19 – 26 Apr
24 Jun
3-4 wk
17 May
15 Jul
0 wk
18 May
5 Jul
0 wk
Savoy Cabbage
Brassica oleracea (Savoy Cabbage-gruppen)
5 – 19 Apr
20 Jun
4-6 wk
17 May
18 Jul
0 wk
Shallot (bulbs)
Allium cepa (Aggregatum-gruppen)
19 Apr – 3 May
23 May
2-4 wk
17 May
6 Jun
0 wk
17 May
27 May
0 wk
Shallot (sets)
Allium cepa (Aggregatum-gruppen)
18 May
30 May
0 wk
18 May
20 May
0 wk
Spinach
Spinacia oleracea
19 – 26 Apr
21 Jul
3-4 wk
17 May
11 Aug
0 wk
14 May
1 Aug
0 wk
Sweet potato
Ipomoea batatas
11 – 25 Jun
4-6 wk
23 Jul
10 wk after
Garden tomato
Solanum lycopersicum
Season too short
22 Mar – 5 Apr
6-8 wk
17 May
0 wk
Tomatillo
Physalis ixocarpa
Common Bean
Phaseolus vulgaris
Season too short
19 Apr – 3 May
2-4 wk
17 May
0 wk
30 May
2 wk after
White Cabbage
Brassica oleracea (White Cabbage-gruppen)
5 – 19 Apr
20 Jun
4-6 wk
17 May
18 Jul
0 wk
Garden pea
Pisum sativum
19 – 26 Apr
9 Jun
3-4 wk
17 May
30 Jun
0 wk
18 May
20 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
11 – 25 Apr
4-6 wk
23 May
1 wk after
Lemon balm
Melissa officinalis
8 – 22 Mar
5 May
8-10 wk
17 May
30 Jun
0 wk
11 Jun
20 Jun
4 wk after
Dill
Anethum graveolens
18 May
7 Jul
0 wk
Wild chives
Allium schoenoprasum
22 Mar – 5 Apr
1 Jun
6-8 wk
17 May
13 Jul
0 wk
18 May
3 Jul
0 wk
Spearmint
Mentha spicata
22 Feb – 22 Mar
18 May
8-12 wk
17 May
13 Jul
0 wk
11 Jun
3 Jul
4 wk after
Coriander
Coriandrum sativum
17 May
27 Jul
0 wk
30 May
17 Jul
2 wk after
Garden sage
Salvia officinalis
10 – 24 Mar
3 May
8-10 wk
19 May
28 Jun
0 wk
Common thyme
Thymus vulgaris
8 – 22 Mar
8 May
8-10 wk
17 May
3 Jul
0 wk
Oregano
Origanum vulgare
22 Mar – 5 Apr
22 May
6-8 wk
17 May
3 Jul
0 wk
11 Jun
23 Jun
4 wk after
Parsley
Petroselinum crispum
22 Mar – 5 Apr
22 May
6-8 wk
17 May
3 Jul
0 wk
18 May
23 Jun
0 wk
Rosemary
Salvia rosmarinus
Fleece
8 Feb – 8 Mar
19 Mar
10-14 wk
17 May
28 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
25 Apr – 2 May
3-4 wk
23 May
1 wk after
Cornflower
Centaurea cyanus
17 May
13 Jul
0 wk
18 May
3 Jul
0 wk
Statice
Limonium sinuatum
Greenhouse
8 – 22 Mar
20 Mar
8-10 wk
17 May
0 wk
Sweet William
Dianthus barbatus
22 Mar – 5 Apr
6-8 wk
17 May
0 wk
27 May
1 wk after
Snow-on-the-mountain
Euphorbia marginata
Greenhouse
22 Mar – 5 Apr
3 Apr
6-8 wk
17 May
0 wk
18 Jun
5 wk after
Pinnate dahlia
Dahlia × pinnata
Greenhouse
22 Mar – 5 Apr
8 Apr
6-8 wk
17 May
20 May
0 wk
Pinnate dahlia (tubers)
Dahlia × pinnata
Greenhouse
28 Mar – 25 Apr
22 Apr
4-8 wk
23 May
1 wk after
23 May
1 wk after
Foxglove
Digitalis purpurea
8 – 22 Mar
8-10 wk
17 May
0 wk
30 May
2 wk after
Busy lizzie
Impatiens walleriana
Greenhouse
28 Feb – 28 Mar
29 Apr
8-12 wk
23 May
24 Jun
1 wk after
Creeping zinnia
Sanvitalia procumbens
Greenhouse
22 Mar – 5 Apr
13 Apr
6-8 wk
17 May
25 May
0 wk
Hyacinth bean
Dolichos lablab
Season too short
18 Apr – 2 May
4-6 wk
30 May
2 wk after
Chinese lantern
Physalis alkekengi
10 – 24 Mar
2 Apr
8-10 wk
19 May
28 May
0 wk
Love in a mist
Nigella damascena
17 May
15 Jun
0 wk
18 May
5 Jun
0 wk
Strawflower
Xerochrysum bracteatum
Season too short
22 Mar – 5 Apr
24 Mar
6-8 wk
17 May
0 wk
18 Jun
5 wk after
Purple-top vervain
Verbena bonariensis
24 Feb – 24 Mar
2 Apr
8-12 wk
19 May
28 May
0 wk
Cardoon
Cynara cardunculus
Greenhouse
22 Feb – 22 Mar
18 Mar
8-12 wk
17 May
0 wk
Regal-foxtail
Ptilotus nobilis
Season too short
28 Feb – 28 Mar
8-12 wk
23 May
1 wk after
Globe amaranth
Gomphrena globosa
Season too short
28 Mar – 11 Apr
6-8 wk
23 May
1 wk after
Corn poppy
Papaver rhoeas
17 May
30 Jun
0 wk
18 May
20 Jun
0 wk
Snapdragon
Antirrhinum majus
22 Feb – 22 Mar
25 Apr
8-12 wk
17 May
20 Jun
0 wk
27 May
10 Jun
1 wk after
Flossflower
Ageratum houstonianum
Greenhouse
14 – 28 Mar
30 Mar
8-10 wk
23 May
25 May
1 wk after
Sweet pea
Lathyrus odoratus
22 Mar – 12 Apr
29 May
5-8 wk
17 May
3 Jul
0 wk
Stock
Matthiola incana
22 Mar – 5 Apr
19 May
6-8 wk
17 May
30 Jun
0 wk
30 May
20 Jun
2 wk after
Wormwood
Artemisia absinthium
22 Mar – 5 Apr
2 May
6-8 wk
17 May
13 Jun
0 wk
30 May
3 Jun
2 wk after
Mexican sunflower
Tithonia rotundifolia
Season too short
11 – 25 Apr
4-6 wk
23 May
1 wk after
Garden pansy
Viola × wittrockiana
8 – 22 Mar
18 May
8-10 wk
17 May
13 Jul
0 wk
27 May
3 Jul
1 wk after
Petunia
Petunia
Greenhouse
22 Feb – 22 Mar
20 Mar
8-12 wk
17 May
0 wk
Sweet Scabious
Scabiosa atropurpurea
24 Mar – 7 Apr
16 Apr
6-8 wk
19 May
28 May
0 wk
29 Jun
6 wk after
Common zinnia
Zinnia elegans
Season too short
5 – 19 Apr
11 Apr
4-6 wk
17 May
0 wk
Common morning glory
Ipomoea purpurea
Season too short
18 Apr – 2 May
3-5 wk
23 May
1 wk after
Garden cosmos
Cosmos bipinnatus
Greenhouse
5 – 19 Apr
22 Apr
4-6 wk
17 May
20 May
0 wk
30 May
2 wk after
Scarlet milkweed
Asclepias curassavica
Season too short
7 Mar – 4 Apr
8-12 wk
30 May
2 wk after
Bee balm
Monarda didyma
22 Feb – 22 Mar
5 Apr
8-12 wk
17 May
31 May
0 wk
11 Jun
4 wk after
Yarrow
Achillea millefolium
22 Mar – 5 Apr
2 Apr
6-8 wk
17 May
0 wk
30 May
2 wk after
Safflower
Carthamus tinctorius
17 May
12 Jun
0 wk
18 May
2 Jun
0 wk
Iceland poppy
Papaver nudicaule
Season too short
22 Mar – 5 Apr
22 May
6-8 wk
17 May
3 Jul
0 wk
1 May
23 Jun
2 wk before
Bishop's flower
Ammi majus
5 – 19 Apr
23 May
4-6 wk
17 May
20 Jun
0 wk
30 May
10 Jun
2 wk after
Drumsticks
Pycnosorus globosus
Season too short
28 Feb – 14 Mar
10-12 wk
23 May
1 wk after
Sunflower
Helianthus annuus
2 – 9 May
15 May
3-4 wk
30 May
5 Jun
2 wk after
11 Jun
4 wk after
China aster
Callistephus chinensis
4 – 18 Apr
4 May
6-8 wk
30 May
15 Jun
2 wk after
29 Jun
6 wk after
Annual phlox
Phlox drummondii
Greenhouse
22 Mar – 5 Apr
13 Apr
6-8 wk
17 May
25 May
0 wk
30 May
2 wk after
Hollyhock
Alcea rosea
22 Mar – 5 Apr
6-8 wk
17 May
0 wk
30 May
2 wk after
Alpine delphinium
Delphinium elatum
22 Feb – 22 Mar
5 Apr
8-12 wk
17 May
31 May
0 wk
11 Jun
4 wk after
African marigold
Tagetes erecta
Greenhouse
22 Mar – 5 Apr
13 Apr
6-8 wk
17 May
25 May
0 wk
Black-eyed Susan
Rudbeckia hirta
24 Mar – 7 Apr
24 Apr
6-8 wk
19 May
5 Jun
0 wk
29 Jun
6 wk after
Wood sage
Salvia nemorosa
8 – 22 Mar
26 Mar
8-10 wk
17 May
21 May
0 wk
11 Jun
4 wk after
Black-eyed susan vine
Thunbergia alata
Season too short
14 Mar – 11 Apr
6-10 wk
23 May
1 wk after
California goldenpoppy
Eschscholzia californica
17 May
27 Jun
0 wk
18 May
17 Jun
0 wk
Painted tongue
Salpiglossis sinuata
Fleece
14 – 28 Mar
22 Apr
8-10 wk
23 May
17 Jun
1 wk after
Water forget-me-not
Myosotis scorpioides
22 Mar – 5 Apr
2 May
6-8 wk
17 May
13 Jun
0 wk
30 May
3 Jun
2 wk after