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Rel. frost
Last spring frost (0°C) 15 May Frost 9 of 10 years · 20 years of data
Frost-free season 109 days 15 May – 1 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)
27 Mar – 10 Apr
13 Jun
5-7 wk
15 May
18 Jul
0 wk
16 May
8 Jul
0 wk
Broccoli
Brassica oleracea (Italica-gruppen)
3 – 17 Apr
25 Jun
4-6 wk
15 May
23 Jul
0 wk
16 May
13 Jul
0 wk
Chili pepper
Capsicum annuum
Season too short
26 Feb – 26 Mar
8-12 wk
21 May
1 wk after
Curly Kale
Brassica oleracea (Curly Kale-gruppen)
27 Mar – 10 Apr
8 Jun
5-7 wk
15 May
13 Jul
0 wk
15 May
3 Jul
0 wk
Garden cucumber
Cucumis sativus
Season too short
23 – 30 Apr
3-4 wk
21 May
1 wk after
Florence Fennel
Foeniculum vulgare
Fleece
23 – 30 Apr
22 May
4-5 wk
28 May
19 Jun
2 wk after
9 Jun
9 Jun
4 wk after
Butter bean
Phaseolus lunatus
Season too short
26 May – 2 Jun
3-4 wk
23 Jun
6 wk after
Onion
Allium cepa (Cepa-gruppen)
20 Feb – 20 Mar
9 Mar
8-12 wk
15 May
0 wk
28 May
2 wk after
Onion (sets)
Allium cepa (Cepa-gruppen)
16 May
24 May
0 wk
16 May
0 wk
Maize
Zea mays
Season too short
17 – 24 Apr
3-4 wk
15 May
0 wk
Swiss Chard
Beta vulgaris (Flavescens-gruppen)
19 – 26 Apr
18 Jun
3-4 wk
17 May
9 Jul
0 wk
28 May
29 Jun
2 wk after
Carrot
Daucus carota subsp. sativus var. sativus
15 May
24 Jun
0 wk
15 May
14 Jun
0 wk
Palm Kale
Brassica oleracea (Palm Kale-gruppen)
27 Mar – 10 Apr
8 Jun
5-7 wk
15 May
13 Jul
0 wk
15 May
3 Jul
0 wk
Potato
Solanum tuberosum
13 – 27 Apr
4 May
4-6 wk
25 May
1 Jun
1 wk after
25 May
1 wk after
Ornamental Kale
Brassica oleracea (Ornamental-gruppen)
27 Mar – 10 Apr
9 Jun
5-7 wk
15 May
14 Jul
0 wk
16 May
4 Jul
0 wk
Pumpkin
Cucurbita pepo
Season too short
23 – 30 Apr
3-4 wk
21 May
1 wk after
Beetroot
Beta vulgaris (Conditiva-gruppen)
19 – 26 Apr
8 May
3-4 wk
17 May
29 May
0 wk
28 May
2 wk after
Red Cabbage
Brassica oleracea (Red Cabbage-gruppen)
3 – 17 Apr
20 Jun
4-6 wk
15 May
18 Jul
0 wk
Lettuce
Lactuca sativa
17 – 24 Apr
28 Jun
3-4 wk
15 May
19 Jul
0 wk
16 May
9 Jul
0 wk
Savoy Cabbage
Brassica oleracea (Savoy Cabbage-gruppen)
3 – 17 Apr
20 Jun
4-6 wk
15 May
18 Jul
0 wk
Shallot (bulbs)
Allium cepa (Aggregatum-gruppen)
17 Apr – 1 May
13 May
2-4 wk
15 May
27 May
0 wk
15 May
17 May
0 wk
Shallot (sets)
Allium cepa (Aggregatum-gruppen)
16 May
24 May
0 wk
16 May
0 wk
Spinach
Spinacia oleracea
17 – 24 Apr
19 Jul
3-4 wk
15 May
9 Aug
0 wk
12 May
30 Jul
0 wk
Sweet potato
Ipomoea batatas
9 – 23 Jun
4-6 wk
21 Jul
10 wk after
Garden tomato
Solanum lycopersicum
Season too short
20 Mar – 3 Apr
6-8 wk
15 May
0 wk
Tomatillo
Physalis ixocarpa
Common Bean
Phaseolus vulgaris
Season too short
17 Apr – 1 May
2-4 wk
15 May
0 wk
28 May
2 wk after
White Cabbage
Brassica oleracea (White Cabbage-gruppen)
3 – 17 Apr
20 Jun
4-6 wk
15 May
18 Jul
0 wk
Garden pea
Pisum sativum
17 – 24 Apr
13 Jun
3-4 wk
15 May
4 Jul
0 wk
16 May
24 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
9 – 23 Apr
4-6 wk
21 May
1 wk after
Lemon balm
Melissa officinalis
6 – 20 Mar
9 May
8-10 wk
15 May
4 Jul
0 wk
9 Jun
24 Jun
4 wk after
Dill
Anethum graveolens
16 May
9 Jul
0 wk
Wild chives
Allium schoenoprasum
20 Mar – 3 Apr
1 Jun
6-8 wk
15 May
13 Jul
0 wk
16 May
3 Jul
0 wk
Spearmint
Mentha spicata
20 Feb – 20 Mar
18 May
8-12 wk
15 May
13 Jul
0 wk
9 Jun
3 Jul
4 wk after
Coriander
Coriandrum sativum
15 May
29 Jul
0 wk
28 May
19 Jul
2 wk after
Garden sage
Salvia officinalis
8 – 22 Mar
3 May
8-10 wk
17 May
28 Jun
0 wk
Common thyme
Thymus vulgaris
6 – 20 Mar
8 May
8-10 wk
15 May
3 Jul
0 wk
Oregano
Origanum vulgare
20 Mar – 3 Apr
22 May
6-8 wk
15 May
3 Jul
0 wk
9 Jun
23 Jun
4 wk after
Parsley
Petroselinum crispum
20 Mar – 3 Apr
22 May
6-8 wk
15 May
3 Jul
0 wk
16 May
23 Jun
0 wk
Rosemary
Salvia rosmarinus
8 Feb – 8 Mar
13 Mar
10-14 wk
17 May
22 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
23 – 30 Apr
3-4 wk
21 May
1 wk after
Cornflower
Centaurea cyanus
15 May
13 Jul
0 wk
16 May
3 Jul
0 wk
Statice
Limonium sinuatum
Greenhouse
6 – 20 Mar
24 Mar
8-10 wk
15 May
19 May
0 wk
Sweet William
Dianthus barbatus
20 Mar – 3 Apr
6-8 wk
15 May
0 wk
25 May
1 wk after
Snow-on-the-mountain
Euphorbia marginata
Greenhouse
20 Mar – 3 Apr
7 Apr
6-8 wk
15 May
19 May
0 wk
16 Jun
5 wk after
Pinnate dahlia
Dahlia × pinnata
Greenhouse
20 Mar – 3 Apr
14 Apr
6-8 wk
15 May
26 May
0 wk
Pinnate dahlia (tubers)
Dahlia × pinnata
Greenhouse
26 Mar – 23 Apr
28 Apr
4-8 wk
21 May
26 May
1 wk after
21 May
1 wk after
Foxglove
Digitalis purpurea
6 – 20 Mar
8-10 wk
15 May
0 wk
28 May
2 wk after
Busy lizzie
Impatiens walleriana
Greenhouse
26 Feb – 26 Mar
10 May
8-12 wk
21 May
5 Jul
1 wk after
Creeping zinnia
Sanvitalia procumbens
Greenhouse
20 Mar – 3 Apr
17 Apr
6-8 wk
15 May
29 May
0 wk
Hyacinth bean
Dolichos lablab
Season too short
16 – 30 Apr
4-6 wk
28 May
2 wk after
Chinese lantern
Physalis alkekengi
8 – 22 Mar
4 Apr
8-10 wk
17 May
30 May
0 wk
Love in a mist
Nigella damascena
15 May
19 Jun
0 wk
16 May
9 Jun
0 wk
Strawflower
Xerochrysum bracteatum
Season too short
20 Mar – 3 Apr
28 Mar
6-8 wk
15 May
0 wk
16 Jun
5 wk after
Purple-top vervain
Verbena bonariensis
22 Feb – 22 Mar
4 Apr
8-12 wk
17 May
30 May
0 wk
Cardoon
Cynara cardunculus
Season too short
20 Feb – 20 Mar
16 Mar
8-12 wk
15 May
0 wk
Regal-foxtail
Ptilotus nobilis
Season too short
26 Feb – 26 Mar
8-12 wk
21 May
1 wk after
Globe amaranth
Gomphrena globosa
Season too short
26 Mar – 9 Apr
6-8 wk
21 May
1 wk after
Corn poppy
Papaver rhoeas
15 May
4 Jul
0 wk
16 May
24 Jun
0 wk
Snapdragon
Antirrhinum majus
20 Feb – 20 Mar
29 Apr
8-12 wk
15 May
24 Jun
0 wk
25 May
14 Jun
1 wk after
Flossflower
Ageratum houstonianum
Greenhouse
12 – 26 Mar
3 Apr
8-10 wk
21 May
29 May
1 wk after
Sweet pea
Lathyrus odoratus
20 Mar – 10 Apr
29 May
5-8 wk
15 May
3 Jul
0 wk
Stock
Matthiola incana
20 Mar – 3 Apr
23 May
6-8 wk
15 May
4 Jul
0 wk
28 May
24 Jun
2 wk after
Wormwood
Artemisia absinthium
20 Mar – 3 Apr
2 May
6-8 wk
15 May
13 Jun
0 wk
28 May
3 Jun
2 wk after
Mexican sunflower
Tithonia rotundifolia
Season too short
9 – 23 Apr
4-6 wk
21 May
1 wk after
Garden pansy
Viola × wittrockiana
6 – 20 Mar
18 May
8-10 wk
15 May
13 Jul
0 wk
25 May
3 Jul
1 wk after
Petunia
Petunia
Greenhouse
20 Feb – 20 Mar
24 Mar
8-12 wk
15 May
19 May
0 wk
Sweet Scabious
Scabiosa atropurpurea
22 Mar – 5 Apr
18 Apr
6-8 wk
17 May
30 May
0 wk
27 Jun
6 wk after
Common zinnia
Zinnia elegans
Greenhouse
3 – 17 Apr
22 Apr
4-6 wk
15 May
20 May
0 wk
Common morning glory
Ipomoea purpurea
Season too short
16 – 30 Apr
3-5 wk
21 May
1 wk after
Garden cosmos
Cosmos bipinnatus
Greenhouse
3 – 17 Apr
28 Apr
4-6 wk
15 May
26 May
0 wk
28 May
2 wk after
Scarlet milkweed
Asclepias curassavica
Season too short
5 Mar – 2 Apr
8-12 wk
28 May
2 wk after
Bee balm
Monarda didyma
20 Feb – 20 Mar
9 Apr
8-12 wk
15 May
4 Jun
0 wk
9 Jun
4 wk after
Yarrow
Achillea millefolium
20 Mar – 3 Apr
2 Apr
6-8 wk
15 May
0 wk
28 May
2 wk after
Safflower
Carthamus tinctorius
15 May
10 Jun
0 wk
16 May
31 May
0 wk
Iceland poppy
Papaver nudicaule
Season too short
20 Mar – 3 Apr
22 May
6-8 wk
15 May
3 Jul
0 wk
29 Apr
23 Jun
2 wk before
Bishop's flower
Ammi majus
3 – 17 Apr
27 May
4-6 wk
15 May
24 Jun
0 wk
28 May
14 Jun
2 wk after
Drumsticks
Pycnosorus globosus
Season too short
26 Feb – 12 Mar
10-12 wk
21 May
1 wk after
Sunflower
Helianthus annuus
30 Apr – 7 May
21 May
3-4 wk
28 May
11 Jun
2 wk after
9 Jun
4 wk after
China aster
Callistephus chinensis
2 – 16 Apr
10 May
6-8 wk
28 May
21 Jun
2 wk after
27 Jun
6 wk after
Annual phlox
Phlox drummondii
Greenhouse
20 Mar – 3 Apr
17 Apr
6-8 wk
15 May
29 May
0 wk
28 May
2 wk after
Hollyhock
Alcea rosea
20 Mar – 3 Apr
6-8 wk
15 May
0 wk
28 May
2 wk after
Alpine delphinium
Delphinium elatum
20 Feb – 20 Mar
9 Apr
8-12 wk
15 May
4 Jun
0 wk
9 Jun
4 wk after
African marigold
Tagetes erecta
Greenhouse
20 Mar – 3 Apr
17 Apr
6-8 wk
15 May
29 May
0 wk
Black-eyed Susan
Rudbeckia hirta
22 Mar – 5 Apr
30 Apr
6-8 wk
17 May
11 Jun
0 wk
27 Jun
6 wk after
Wood sage
Salvia nemorosa
6 – 20 Mar
30 Mar
8-10 wk
15 May
25 May
0 wk
9 Jun
4 wk after
Black-eyed susan vine
Thunbergia alata
Season too short
12 Mar – 9 Apr
6-10 wk
21 May
1 wk after
California goldenpoppy
Eschscholzia californica
15 May
30 Jun
0 wk
16 May
20 Jun
0 wk
Painted tongue
Salpiglossis sinuata
Fleece
12 – 26 Mar
24 Apr
8-10 wk
21 May
19 Jun
1 wk after
Water forget-me-not
Myosotis scorpioides
20 Mar – 3 Apr
2 May
6-8 wk
15 May
13 Jun
0 wk
28 May
3 Jun
2 wk after