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Method
Rel. frost
Last spring frost (0°C) 10 May Frost 9 of 10 years · 20 years of data
Frost-free season 127 days 10 May – 14 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)
22 Mar – 5 Apr
18 Jun
5-7 wk
10 May
23 Jul
0 wk
3 May
13 Jul
1 wk before
Broccoli
Brassica oleracea (Italica-gruppen)
29 Mar – 12 Apr
30 Jun
4-6 wk
10 May
28 Jul
0 wk
3 May
18 Jul
1 wk before
Chili pepper
Capsicum annuum
Season too short
25 Feb – 25 Mar
8-12 wk
20 May
1 wk after
Curly Kale
Brassica oleracea (Curly Kale-gruppen)
22 Mar – 5 Apr
13 Jun
5-7 wk
10 May
18 Jul
0 wk
28 Apr
8 Jul
2 wk before
Garden cucumber
Cucumis sativus
Season too short
22 – 29 Apr
3-4 wk
20 May
1 wk after
Florence Fennel
Foeniculum vulgare
Fleece
25 Apr – 2 May
29 May
4-5 wk
30 May
26 Jun
3 wk after
31 May
16 Jun
3 wk after
Butter bean
Phaseolus lunatus
Season too short
23 – 30 May
3-4 wk
20 Jun
6 wk after
Onion
Allium cepa (Cepa-gruppen)
15 Feb – 15 Mar
5 Mar
8-12 wk
10 May
0 wk
20 May
1 wk after
Onion (sets)
Allium cepa (Cepa-gruppen)
3 May
20 May
1 wk before
3 May
10 May
1 wk before
Maize
Zea mays
Season too short
14 – 21 Apr
3-4 wk
12 May
0 wk
Swiss Chard
Beta vulgaris (Flavescens-gruppen)
17 – 24 Apr
25 Jun
3-4 wk
15 May
16 Jul
1 wk after
20 May
6 Jul
1 wk after
Carrot
Daucus carota subsp. sativus var. sativus
10 May
2 Jul
0 wk
28 Apr
22 Jun
2 wk before
Palm Kale
Brassica oleracea (Palm Kale-gruppen)
22 Mar – 5 Apr
13 Jun
5-7 wk
10 May
18 Jul
0 wk
28 Apr
8 Jul
2 wk before
Potato
Solanum tuberosum
3 – 17 Apr
24 Apr
4-6 wk
15 May
22 May
1 wk after
15 May
1 wk after
Ornamental Kale
Brassica oleracea (Ornamental-gruppen)
22 Mar – 5 Apr
17 Jun
5-7 wk
10 May
22 Jul
0 wk
3 May
12 Jul
1 wk before
Pumpkin
Cucurbita pepo
Season too short
22 – 29 Apr
3-4 wk
20 May
1 wk after
Beetroot
Beta vulgaris (Conditiva-gruppen)
17 – 24 Apr
24 Apr
3-4 wk
15 May
15 May
1 wk after
20 May
1 wk after
Red Cabbage
Brassica oleracea (Red Cabbage-gruppen)
29 Mar – 12 Apr
25 Jun
4-6 wk
10 May
23 Jul
0 wk
Lettuce
Lactuca sativa
12 – 19 Apr
6 Jul
3-4 wk
10 May
27 Jul
0 wk
3 May
17 Jul
1 wk before
Savoy Cabbage
Brassica oleracea (Savoy Cabbage-gruppen)
29 Mar – 12 Apr
25 Jun
4-6 wk
10 May
23 Jul
0 wk
Shallot (bulbs)
Allium cepa (Aggregatum-gruppen)
31 Mar – 14 Apr
10 May
2-4 wk
28 Apr
24 May
2 wk before
28 Apr
14 May
2 wk before
Shallot (sets)
Allium cepa (Aggregatum-gruppen)
3 May
20 May
1 wk before
3 May
10 May
1 wk before
Spinach
Spinacia oleracea
12 – 19 Apr
27 Jul
3-4 wk
10 May
17 Aug
0 wk
22 Apr
7 Aug
3 wk before
Sweet potato
Ipomoea batatas
6 – 20 Jun
4-6 wk
18 Jul
10 wk after
Garden tomato
Solanum lycopersicum
Season too short
17 – 31 Mar
6-8 wk
12 May
0 wk
Tomatillo
Physalis ixocarpa
Common Bean
Phaseolus vulgaris
Season too short
14 – 28 Apr
2-4 wk
12 May
0 wk
20 May
1 wk after
White Cabbage
Brassica oleracea (White Cabbage-gruppen)
29 Mar – 12 Apr
25 Jun
4-6 wk
10 May
23 Jul
0 wk
Garden pea
Pisum sativum
12 – 19 Apr
21 Jun
3-4 wk
10 May
12 Jul
0 wk
3 May
2 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
Season too short
8 – 22 Apr
4-6 wk
20 May
1 wk after
Lemon balm
Melissa officinalis
1 – 15 Mar
17 May
8-10 wk
10 May
12 Jul
0 wk
31 May
2 Jul
3 wk after
Dill
Anethum graveolens
3 May
16 Jul
1 wk before
Wild chives
Allium schoenoprasum
15 – 29 Mar
6 Jun
6-8 wk
10 May
18 Jul
0 wk
3 May
8 Jul
1 wk before
Spearmint
Mentha spicata
15 Feb – 15 Mar
23 May
8-12 wk
10 May
18 Jul
0 wk
31 May
8 Jul
3 wk after
Coriander
Coriandrum sativum
10 May
5 Aug
0 wk
20 May
26 Jul
1 wk after
Garden sage
Salvia officinalis
6 – 20 Mar
8 May
8-10 wk
15 May
3 Jul
1 wk after
Common thyme
Thymus vulgaris
1 – 15 Mar
13 May
8-10 wk
10 May
8 Jul
0 wk
Oregano
Origanum vulgare
15 – 29 Mar
27 May
6-8 wk
10 May
8 Jul
0 wk
31 May
28 Jun
3 wk after
Parsley
Petroselinum crispum
15 – 29 Mar
27 May
6-8 wk
10 May
8 Jul
0 wk
3 May
28 Jun
1 wk before
Rosemary
Salvia rosmarinus
6 Feb – 6 Mar
17 Mar
10-14 wk
15 May
26 May
1 wk after

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
22 – 29 Apr
3-4 wk
20 May
1 wk after
Cornflower
Centaurea cyanus
10 May
18 Jul
0 wk
3 May
8 Jul
1 wk before
Statice
Limonium sinuatum
Greenhouse
3 – 17 Mar
10 Apr
8-10 wk
12 May
5 Jun
0 wk
Sweet William
Dianthus barbatus
15 – 29 Mar
6-8 wk
10 May
0 wk
15 May
1 wk after
Snow-on-the-mountain
Euphorbia marginata
Greenhouse
17 – 31 Mar
24 Apr
6-8 wk
12 May
5 Jun
0 wk
7 Jun
4 wk after
Pinnate dahlia
Dahlia × pinnata
Greenhouse
15 – 29 Mar
27 Apr
6-8 wk
10 May
8 Jun
0 wk
Pinnate dahlia (tubers)
Dahlia × pinnata
Greenhouse
14 Mar – 11 Apr
11 May
4-8 wk
9 May
8 Jun
0 wk
9 May
29 May
0 wk
Foxglove
Digitalis purpurea
1 – 15 Mar
8-10 wk
10 May
0 wk
20 May
1 wk after
Busy lizzie
Impatiens walleriana
Greenhouse
25 Feb – 25 Mar
6 May
8-12 wk
20 May
1 Jul
1 wk after
Creeping zinnia
Sanvitalia procumbens
Greenhouse
17 – 31 Mar
4 May
6-8 wk
12 May
15 Jun
0 wk
Hyacinth bean
Dolichos lablab
Season too short
18 Apr – 2 May
4-6 wk
30 May
3 wk after
Chinese lantern
Physalis alkekengi
6 – 20 Mar
11 Apr
8-10 wk
15 May
6 Jun
1 wk after
Love in a mist
Nigella damascena
10 May
27 Jun
0 wk
3 May
17 Jun
1 wk before
Strawflower
Xerochrysum bracteatum
Greenhouse
17 – 31 Mar
14 Apr
6-8 wk
12 May
26 May
0 wk
7 Jun
4 wk after
Purple-top vervain
Verbena bonariensis
20 Feb – 20 Mar
11 Apr
8-12 wk
15 May
6 Jun
1 wk after
Cardoon
Cynara cardunculus
Greenhouse
17 Feb – 17 Mar
24 Mar
8-12 wk
12 May
19 May
0 wk
Regal-foxtail
Ptilotus nobilis
Season too short
25 Feb – 25 Mar
8-12 wk
20 May
1 wk after
Globe amaranth
Gomphrena globosa
Season too short
25 Mar – 8 Apr
6-8 wk
20 May
1 wk after
Corn poppy
Papaver rhoeas
10 May
12 Jul
0 wk
3 May
2 Jul
1 wk before
Snapdragon
Antirrhinum majus
15 Feb – 15 Mar
7 May
8-12 wk
10 May
2 Jul
0 wk
15 May
22 Jun
1 wk after
Flossflower
Ageratum houstonianum
Greenhouse
11 – 25 Mar
20 Apr
8-10 wk
20 May
15 Jun
1 wk after
Sweet pea
Lathyrus odoratus
15 Mar – 5 Apr
3 Jun
5-8 wk
10 May
8 Jul
0 wk
Stock
Matthiola incana
15 – 29 Mar
31 May
6-8 wk
10 May
12 Jul
0 wk
20 May
2 Jul
1 wk after
Wormwood
Artemisia absinthium
15 – 29 Mar
7 May
6-8 wk
10 May
18 Jun
0 wk
20 May
8 Jun
1 wk after
Mexican sunflower
Tithonia rotundifolia
Season too short
8 – 22 Apr
4-6 wk
20 May
1 wk after
Garden pansy
Viola × wittrockiana
1 – 15 Mar
23 May
8-10 wk
10 May
18 Jul
0 wk
15 May
8 Jul
1 wk after
Petunia
Petunia
Greenhouse
17 Feb – 17 Mar
10 Apr
8-12 wk
12 May
5 Jun
0 wk
Sweet Scabious
Scabiosa atropurpurea
20 Mar – 3 Apr
25 Apr
6-8 wk
15 May
6 Jun
1 wk after
15 Jun
5 wk after
Common zinnia
Zinnia elegans
Greenhouse
31 Mar – 14 Apr
18 Apr
4-6 wk
12 May
16 May
0 wk
Common morning glory
Ipomoea purpurea
Season too short
15 – 29 Apr
3-5 wk
20 May
1 wk after
Garden cosmos
Cosmos bipinnatus
Greenhouse
31 Mar – 14 Apr
11 May
4-6 wk
12 May
8 Jun
0 wk
20 May
29 May
1 wk after
Scarlet milkweed
Asclepias curassavica
Season too short
7 Mar – 4 Apr
8-12 wk
30 May
3 wk after
Bee balm
Monarda didyma
15 Feb – 15 Mar
17 Apr
8-12 wk
10 May
12 Jun
0 wk
31 May
2 Jun
3 wk after
Yarrow
Achillea millefolium
15 – 29 Mar
7 Apr
6-8 wk
10 May
19 May
0 wk
20 May
1 wk after
Safflower
Carthamus tinctorius
10 May
18 Jun
0 wk
3 May
8 Jun
1 wk before
Iceland poppy
Papaver nudicaule
Season too short
15 – 29 Mar
27 May
6-8 wk
10 May
8 Jul
0 wk
1 Apr
28 Jun
6 wk before
Bishop's flower
Ammi majus
29 Mar – 12 Apr
4 Jun
4-6 wk
10 May
2 Jul
0 wk
20 May
22 Jun
1 wk after
Drumsticks
Pycnosorus globosus
Season too short
25 Feb – 11 Mar
10-12 wk
20 May
1 wk after
Sunflower
Helianthus annuus
2 – 9 May
25 May
3-4 wk
30 May
15 Jun
3 wk after
31 May
5 Jun
3 wk after
China aster
Callistephus chinensis
4 – 18 Apr
14 May
6-8 wk
30 May
25 Jun
3 wk after
15 Jun
15 Jun
5 wk after
Annual phlox
Phlox drummondii
Greenhouse
15 – 29 Mar
4 May
6-8 wk
10 May
15 Jun
0 wk
20 May
5 Jun
1 wk after
Hollyhock
Alcea rosea
15 – 29 Mar
6-8 wk
10 May
0 wk
20 May
1 wk after
Alpine delphinium
Delphinium elatum
15 Feb – 15 Mar
17 Apr
8-12 wk
10 May
12 Jun
0 wk
31 May
2 Jun
3 wk after
African marigold
Tagetes erecta
Greenhouse
17 – 31 Mar
4 May
6-8 wk
12 May
15 Jun
0 wk
Black-eyed Susan
Rudbeckia hirta
20 Mar – 3 Apr
4 May
6-8 wk
15 May
15 Jun
1 wk after
15 Jun
5 wk after
Wood sage
Salvia nemorosa
1 – 15 Mar
7 Apr
8-10 wk
10 May
2 Jun
0 wk
31 May
3 wk after
Black-eyed susan vine
Thunbergia alata
Season too short
11 Mar – 8 Apr
6-10 wk
20 May
1 wk after
California goldenpoppy
Eschscholzia californica
10 May
6 Jul
0 wk
3 May
26 Jun
1 wk before
Painted tongue
Salpiglossis sinuata
Fleece
11 – 25 Mar
1 May
8-10 wk
20 May
26 Jun
1 wk after
Water forget-me-not
Myosotis scorpioides
15 – 29 Mar
7 May
6-8 wk
10 May
18 Jun
0 wk
20 May
8 Jun
1 wk after