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Method
Rel. frost
Last spring frost (0°C) 15 May Frost 9 of 10 years · 20 years of data
Frost-free season 120 days 15 May – 12 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
16 Jun
5-7 wk
15 May
21 Jul
0 wk
19 May
11 Jul
1 wk after
Broccoli
Brassica oleracea (Italica-gruppen)
3 – 17 Apr
28 Jun
4-6 wk
15 May
26 Jul
0 wk
19 May
16 Jul
1 wk after
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
11 Jun
5-7 wk
15 May
16 Jul
0 wk
15 May
6 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
12 – 19 May
19 May
4-5 wk
16 Jun
16 Jun
5 wk after
3 Jul
7 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)
Fleece
20 Feb – 20 Mar
14 Mar
8-12 wk
15 May
0 wk
25 May
1 wk after
Onion (sets)
Allium cepa (Cepa-gruppen)
19 May
1 wk after
19 May
1 wk after
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
26 Jun
3-4 wk
17 May
17 Jul
0 wk
5 Jun
7 Jul
3 wk after
Carrot
Daucus carota subsp. sativus var. sativus
15 May
5 Jul
0 wk
15 May
25 Jun
0 wk
Palm Kale
Brassica oleracea (Palm Kale-gruppen)
27 Mar – 10 Apr
11 Jun
5-7 wk
15 May
16 Jul
0 wk
15 May
6 Jul
0 wk
Potato
Solanum tuberosum
19 Apr – 3 May
24 Apr
4-6 wk
31 May
2 wk after
31 May
2 wk after
Ornamental Kale
Brassica oleracea (Ornamental-gruppen)
27 Mar – 10 Apr
20 Jun
5-7 wk
15 May
25 Jul
0 wk
19 May
15 Jul
1 wk after
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
28 Apr
3-4 wk
17 May
19 May
0 wk
5 Jun
3 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
9 Jul
3-4 wk
15 May
30 Jul
0 wk
19 May
20 Jul
1 wk after
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)
17 Apr – 1 May
7 May
2-4 wk
15 May
21 May
0 wk
15 May
0 wk
Shallot (sets)
Allium cepa (Aggregatum-gruppen)
19 May
1 wk after
19 May
1 wk after
Spinach
Spinacia oleracea
17 – 24 Apr
25 Jul
3-4 wk
15 May
15 Aug
0 wk
11 May
5 Aug
1 wk before
Sweet potato
Ipomoea batatas
16 – 30 Jun
4-6 wk
28 Jul
11 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
5 Jun
3 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
24 Jun
3-4 wk
15 May
15 Jul
0 wk
19 May
5 Jul
1 wk after

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
20 May
8-10 wk
15 May
15 Jul
0 wk
19 Jun
5 Jul
5 wk after
Dill
Anethum graveolens
19 May
17 Jul
1 wk after
Wild chives
Allium schoenoprasum
20 Mar – 3 Apr
4 Jun
6-8 wk
15 May
16 Jul
0 wk
19 May
6 Jul
1 wk after
Spearmint
Mentha spicata
20 Feb – 20 Mar
21 May
8-12 wk
15 May
16 Jul
0 wk
19 Jun
6 Jul
5 wk after
Coriander
Coriandrum sativum
15 May
6 Aug
0 wk
5 Jun
27 Jul
3 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
19 Jun
26 Jun
5 wk after
Parsley
Petroselinum crispum
20 Mar – 3 Apr
25 May
6-8 wk
15 May
6 Jul
0 wk
19 May
26 Jun
1 wk after
Rosemary
Salvia rosmarinus
8 Feb – 8 Mar
27 Mar
10-14 wk
17 May
5 Jun
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
16 Jul
0 wk
19 May
6 Jul
1 wk after
Statice
Limonium sinuatum
Greenhouse
6 – 20 Mar
16 Mar
8-10 wk
15 May
0 wk
Sweet William
Dianthus barbatus
20 Mar – 3 Apr
6-8 wk
15 May
0 wk
31 May
2 wk after
Snow-on-the-mountain
Euphorbia marginata
Greenhouse
20 Mar – 3 Apr
30 Mar
6-8 wk
15 May
0 wk
25 Jun
6 wk after
Pinnate dahlia
Dahlia × pinnata
Greenhouse
20 Mar – 3 Apr
25 Apr
6-8 wk
15 May
6 Jun
0 wk
Pinnate dahlia (tubers)
Dahlia × pinnata
Greenhouse
30 Mar – 27 Apr
9 May
4-8 wk
25 May
6 Jun
1 wk after
25 May
27 May
1 wk after
Foxglove
Digitalis purpurea
6 – 20 Mar
8-10 wk
15 May
0 wk
5 Jun
3 wk after
Busy lizzie
Impatiens walleriana
Greenhouse
26 Feb – 26 Mar
12 Apr
8-12 wk
21 May
7 Jun
1 wk after
Creeping zinnia
Sanvitalia procumbens
Greenhouse
20 Mar – 3 Apr
9 Apr
6-8 wk
15 May
21 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
12 Apr
8-10 wk
17 May
7 Jun
0 wk
Love in a mist
Nigella damascena
15 May
30 Jun
0 wk
19 May
20 Jun
1 wk after
Strawflower
Xerochrysum bracteatum
Season too short
20 Mar – 3 Apr
20 Mar
6-8 wk
15 May
0 wk
25 Jun
6 wk after
Purple-top vervain
Verbena bonariensis
22 Feb – 22 Mar
12 Apr
8-12 wk
17 May
7 Jun
0 wk
Cardoon
Cynara cardunculus
Greenhouse
20 Feb – 20 Mar
22 Mar
8-12 wk
15 May
17 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
15 Jul
0 wk
19 May
5 Jul
1 wk after
Snapdragon
Antirrhinum majus
20 Feb – 20 Mar
10 May
8-12 wk
15 May
5 Jul
0 wk
31 May
25 Jun
2 wk after
Flossflower
Ageratum houstonianum
Greenhouse
12 – 26 Mar
26 Mar
8-10 wk
21 May
21 May
1 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
3 Jun
6-8 wk
15 May
15 Jul
0 wk
5 Jun
5 Jul
3 wk after
Wormwood
Artemisia absinthium
20 Mar – 3 Apr
5 May
6-8 wk
15 May
16 Jun
0 wk
5 Jun
6 Jun
3 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
21 May
8-10 wk
15 May
16 Jul
0 wk
31 May
6 Jul
2 wk after
Petunia
Petunia
Greenhouse
20 Feb – 20 Mar
16 Mar
8-12 wk
15 May
0 wk
Sweet Scabious
Scabiosa atropurpurea
22 Mar – 5 Apr
26 Apr
6-8 wk
17 May
7 Jun
0 wk
3 Jul
7 wk after
Common zinnia
Zinnia elegans
Season too short
3 – 17 Apr
4-6 wk
15 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
9 May
4-6 wk
15 May
6 Jun
0 wk
5 Jun
3 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
20 Apr
8-12 wk
15 May
15 Jun
0 wk
19 Jun
5 wk after
Yarrow
Achillea millefolium
20 Mar – 3 Apr
5 Apr
6-8 wk
15 May
17 May
0 wk
5 Jun
3 wk after
Safflower
Carthamus tinctorius
15 May
16 Jun
0 wk
19 May
6 Jun
1 wk after
Iceland poppy
Papaver nudicaule
Season too short
20 Mar – 3 Apr
25 May
6-8 wk
15 May
6 Jul
0 wk
27 Apr
26 Jun
3 wk before
Bishop's flower
Ammi majus
3 – 17 Apr
7 Jun
4-6 wk
15 May
5 Jul
0 wk
5 Jun
25 Jun
3 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
4 Jun
3-4 wk
28 May
25 Jun
2 wk after
19 Jun
5 wk after
China aster
Callistephus chinensis
2 – 16 Apr
24 May
6-8 wk
28 May
5 Jul
2 wk after
3 Jul
7 wk after
Annual phlox
Phlox drummondii
Greenhouse
20 Mar – 3 Apr
9 Apr
6-8 wk
15 May
21 May
0 wk
5 Jun
3 wk after
Hollyhock
Alcea rosea
20 Mar – 3 Apr
6-8 wk
15 May
0 wk
5 Jun
3 wk after
Alpine delphinium
Delphinium elatum
20 Feb – 20 Mar
20 Apr
8-12 wk
15 May
15 Jun
0 wk
19 Jun
5 wk after
African marigold
Tagetes erecta
Greenhouse
20 Mar – 3 Apr
9 Apr
6-8 wk
15 May
21 May
0 wk
Black-eyed Susan
Rudbeckia hirta
22 Mar – 5 Apr
14 May
6-8 wk
17 May
25 Jun
0 wk
3 Jul
7 wk after
Wood sage
Salvia nemorosa
6 – 20 Mar
10 Apr
8-10 wk
15 May
5 Jun
0 wk
19 Jun
5 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
14 Jul
0 wk
19 May
4 Jul
1 wk after
Painted tongue
Salpiglossis sinuata
19 Mar – 2 Apr
21 Apr
8-10 wk
28 May
16 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
5 Jun
6 Jun
3 wk after