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Method
Rel. frost
Last spring frost (0°C) 15 May Frost 3 of 4 years · 20 years of data
Frost-free season 123 days 15 May – 15 Sep
Probability that frost is over

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