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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 110 days 15 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)
27 Mar – 10 Apr
11 Jun
5-7 wk
15 May
16 Jul
0 wk
16 May
6 Jul
0 wk
Broccoli
Brassica oleracea (Italica-gruppen)
3 – 17 Apr
23 Jun
4-6 wk
15 May
21 Jul
0 wk
16 May
11 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
6 Jun
5-7 wk
15 May
11 Jul
0 wk
15 May
1 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
23 May
4-5 wk
28 May
20 Jun
2 wk after
9 Jun
10 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
7 Mar
8-12 wk
15 May
0 wk
28 May
2 wk after
Onion (sets)
Allium cepa (Cepa-gruppen)
16 May
22 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
19 Jun
3-4 wk
17 May
10 Jul
0 wk
28 May
30 Jun
2 wk after
Carrot
Daucus carota subsp. sativus var. sativus
15 May
21 Jun
0 wk
15 May
11 Jun
0 wk
Palm Kale
Brassica oleracea (Palm Kale-gruppen)
27 Mar – 10 Apr
6 Jun
5-7 wk
15 May
11 Jul
0 wk
15 May
1 Jul
0 wk
Potato
Solanum tuberosum
13 – 27 Apr
23 Apr
4-6 wk
25 May
1 wk after
25 May
1 wk after
Ornamental Kale
Brassica oleracea (Ornamental-gruppen)
27 Mar – 10 Apr
6 Jun
5-7 wk
15 May
11 Jul
0 wk
16 May
1 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
4 May
3-4 wk
17 May
25 May
0 wk
28 May
2 wk after
Red Cabbage
Brassica oleracea (Red Cabbage-gruppen)
3 – 17 Apr
18 Jun
4-6 wk
15 May
16 Jul
0 wk
Lettuce
Lactuca sativa
17 – 24 Apr
25 Jun
3-4 wk
15 May
16 Jul
0 wk
16 May
6 Jul
0 wk
Savoy Cabbage
Brassica oleracea (Savoy Cabbage-gruppen)
3 – 17 Apr
18 Jun
4-6 wk
15 May
16 Jul
0 wk
Shallot (bulbs)
Allium cepa (Aggregatum-gruppen)
17 Apr – 1 May
10 May
2-4 wk
15 May
24 May
0 wk
15 May
0 wk
Shallot (sets)
Allium cepa (Aggregatum-gruppen)
16 May
22 May
0 wk
16 May
0 wk
Spinach
Spinacia oleracea
17 – 24 Apr
20 Jul
3-4 wk
15 May
10 Aug
0 wk
12 May
31 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
18 Jun
4-6 wk
15 May
16 Jul
0 wk
Garden pea
Pisum sativum
17 – 24 Apr
10 Jun
3-4 wk
15 May
1 Jul
0 wk
16 May
21 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
6 May
8-10 wk
15 May
1 Jul
0 wk
9 Jun
21 Jun
4 wk after
Dill
Anethum graveolens
16 May
10 Jul
0 wk
Wild chives
Allium schoenoprasum
20 Mar – 3 Apr
30 May
6-8 wk
15 May
11 Jul
0 wk
16 May
1 Jul
0 wk
Spearmint
Mentha spicata
20 Feb – 20 Mar
16 May
8-12 wk
15 May
11 Jul
0 wk
9 Jun
1 Jul
4 wk after
Coriander
Coriandrum sativum
15 May
30 Jul
0 wk
28 May
20 Jul
2 wk after
Garden sage
Salvia officinalis
8 – 22 Mar
1 May
8-10 wk
17 May
26 Jun
0 wk
Common thyme
Thymus vulgaris
6 – 20 Mar
6 May
8-10 wk
15 May
1 Jul
0 wk
Oregano
Origanum vulgare
20 Mar – 3 Apr
20 May
6-8 wk
15 May
1 Jul
0 wk
9 Jun
21 Jun
4 wk after
Parsley
Petroselinum crispum
20 Mar – 3 Apr
20 May
6-8 wk
15 May
1 Jul
0 wk
16 May
21 Jun
0 wk
Rosemary
Salvia rosmarinus
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
23 – 30 Apr
3-4 wk
21 May
1 wk after
Cornflower
Centaurea cyanus
15 May
11 Jul
0 wk
16 May
1 Jul
0 wk
Statice
Limonium sinuatum
Greenhouse
6 – 20 Mar
27 Mar
8-10 wk
15 May
22 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
10 Apr
6-8 wk
15 May
22 May
0 wk
16 Jun
5 wk after
Pinnate dahlia
Dahlia × pinnata
Greenhouse
20 Mar – 3 Apr
15 Apr
6-8 wk
15 May
27 May
0 wk
Pinnate dahlia (tubers)
Dahlia × pinnata
Fleece
2 – 30 Apr
17 Apr
4-8 wk
28 May
2 wk after
28 May
2 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
15 May
8-12 wk
21 May
10 Jul
1 wk after
Creeping zinnia
Sanvitalia procumbens
Greenhouse
20 Mar – 3 Apr
20 Apr
6-8 wk
15 May
1 Jun
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
5 Apr
8-10 wk
17 May
31 May
0 wk
Love in a mist
Nigella damascena
15 May
16 Jun
0 wk
16 May
6 Jun
0 wk
Strawflower
Xerochrysum bracteatum
Season too short
20 Mar – 3 Apr
31 Mar
6-8 wk
15 May
0 wk
16 Jun
5 wk after
Purple-top vervain
Verbena bonariensis
22 Feb – 22 Mar
5 Apr
8-12 wk
17 May
31 May
0 wk
Cardoon
Cynara cardunculus
Season too short
20 Feb – 20 Mar
17 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
1 Jul
0 wk
16 May
21 Jun
0 wk
Snapdragon
Antirrhinum majus
20 Feb – 20 Mar
26 Apr
8-12 wk
15 May
21 Jun
0 wk
25 May
11 Jun
1 wk after
Flossflower
Ageratum houstonianum
Greenhouse
12 – 26 Mar
6 Apr
8-10 wk
21 May
1 Jun
1 wk after
Sweet pea
Lathyrus odoratus
20 Mar – 10 Apr
27 May
5-8 wk
15 May
1 Jul
0 wk
Stock
Matthiola incana
20 Mar – 3 Apr
20 May
6-8 wk
15 May
1 Jul
0 wk
28 May
21 Jun
2 wk after
Wormwood
Artemisia absinthium
20 Mar – 3 Apr
30 Apr
6-8 wk
15 May
11 Jun
0 wk
28 May
1 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
16 May
8-10 wk
15 May
11 Jul
0 wk
25 May
1 Jul
1 wk after
Petunia
Petunia
Greenhouse
20 Feb – 20 Mar
27 Mar
8-12 wk
15 May
22 May
0 wk
Sweet Scabious
Scabiosa atropurpurea
22 Mar – 5 Apr
19 Apr
6-8 wk
17 May
31 May
0 wk
27 Jun
6 wk after
Common zinnia
Zinnia elegans
Greenhouse
3 – 17 Apr
27 Apr
4-6 wk
15 May
25 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
29 Apr
4-6 wk
15 May
27 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
6 Apr
8-12 wk
15 May
1 Jun
0 wk
9 Jun
4 wk after
Yarrow
Achillea millefolium
20 Mar – 3 Apr
31 Mar
6-8 wk
15 May
0 wk
28 May
2 wk after
Safflower
Carthamus tinctorius
15 May
11 Jun
0 wk
16 May
1 Jun
0 wk
Iceland poppy
Papaver nudicaule
Season too short
20 Mar – 3 Apr
20 May
6-8 wk
15 May
1 Jul
0 wk
29 Apr
21 Jun
2 wk before
Bishop's flower
Ammi majus
3 – 17 Apr
24 May
4-6 wk
15 May
21 Jun
0 wk
28 May
11 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
27 May
3-4 wk
28 May
17 Jun
2 wk after
9 Jun
4 wk after
China aster
Callistephus chinensis
2 – 16 Apr
16 May
6-8 wk
28 May
27 Jun
2 wk after
27 Jun
6 wk after
Annual phlox
Phlox drummondii
Fleece
20 Mar – 3 Apr
5 Apr
6-8 wk
15 May
17 May
0 wk
9 Jun
4 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
6 Apr
8-12 wk
15 May
1 Jun
0 wk
9 Jun
4 wk after
African marigold
Tagetes erecta
Greenhouse
20 Mar – 3 Apr
20 Apr
6-8 wk
15 May
1 Jun
0 wk
Black-eyed Susan
Rudbeckia hirta
22 Mar – 5 Apr
6 May
6-8 wk
17 May
17 Jun
0 wk
27 Jun
6 wk after
Wood sage
Salvia nemorosa
6 – 20 Mar
27 Mar
8-10 wk
15 May
22 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
19 Mar – 2 Apr
9 Apr
8-10 wk
28 May
4 Jun
2 wk after
Water forget-me-not
Myosotis scorpioides
20 Mar – 3 Apr
30 Apr
6-8 wk
15 May
11 Jun
0 wk
28 May
1 Jun
2 wk after