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Method
Rel. frost
Last spring frost (0°C) 29 Apr Frost 9 of 10 years · 20 years of data
Frost-free season 138 days 29 Apr – 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)
11 – 25 Mar
18 Jun
5-7 wk
29 Apr
23 Jul
0 wk
22 Apr
13 Jul
1 wk before
Broccoli
Brassica oleracea (Italica-gruppen)
18 Mar – 1 Apr
30 Jun
4-6 wk
29 Apr
28 Jul
0 wk
22 Apr
18 Jul
1 wk before
Chili pepper
Capsicum annuum
Season too short
17 Feb – 17 Mar
8-12 wk
12 May
2 wk after
Curly Kale
Brassica oleracea (Curly Kale-gruppen)
11 – 25 Mar
13 Jun
5-7 wk
29 Apr
18 Jul
0 wk
17 Apr
8 Jul
2 wk before
Garden cucumber
Cucumis sativus
Season too short
14 – 21 Apr
3-4 wk
12 May
2 wk after
Florence Fennel
Foeniculum vulgare
30 Apr – 7 May
22 May
4-5 wk
4 Jun
19 Jun
5 wk after
4 Jun
9 Jun
5 wk after
Butter bean
Phaseolus lunatus
Season too short
17 – 24 May
3-4 wk
14 Jun
7 wk after
Onion
Allium cepa (Cepa-gruppen)
4 Feb – 4 Mar
10 Mar
8-12 wk
29 Apr
5 May
0 wk
9 May
1 wk after
Onion (sets)
Allium cepa (Cepa-gruppen)
22 Apr
25 May
1 wk before
22 Apr
15 May
1 wk before
Maize
Zea mays
Season too short
1 – 8 Apr
3-4 wk
29 Apr
0 wk
Swiss Chard
Beta vulgaris (Flavescens-gruppen)
8 – 15 Apr
22 Jun
3-4 wk
6 May
13 Jul
1 wk after
9 May
3 Jul
1 wk after
Carrot
Daucus carota subsp. sativus var. sativus
29 Apr
8 Jul
0 wk
17 Apr
28 Jun
2 wk before
Palm Kale
Brassica oleracea (Palm Kale-gruppen)
11 – 25 Mar
13 Jun
5-7 wk
29 Apr
18 Jul
0 wk
17 Apr
8 Jul
2 wk before
Potato
Solanum tuberosum
23 Mar – 6 Apr
12 May
4-6 wk
4 May
9 Jun
1 wk after
4 May
30 May
1 wk after
Ornamental Kale
Brassica oleracea (Ornamental-gruppen)
11 – 25 Mar
23 Jun
5-7 wk
29 Apr
28 Jul
0 wk
22 Apr
18 Jul
1 wk before
Pumpkin
Cucurbita pepo
Season too short
14 – 21 Apr
3-4 wk
12 May
2 wk after
Beetroot
Beta vulgaris (Conditiva-gruppen)
8 – 15 Apr
2 May
3-4 wk
6 May
23 May
1 wk after
9 May
13 May
1 wk after
Red Cabbage
Brassica oleracea (Red Cabbage-gruppen)
18 Mar – 1 Apr
25 Jun
4-6 wk
29 Apr
23 Jul
0 wk
Lettuce
Lactuca sativa
1 – 8 Apr
12 Jul
3-4 wk
29 Apr
2 Aug
0 wk
22 Apr
23 Jul
1 wk before
Savoy Cabbage
Brassica oleracea (Savoy Cabbage-gruppen)
18 Mar – 1 Apr
25 Jun
4-6 wk
29 Apr
23 Jul
0 wk
Shallot (bulbs)
Allium cepa (Aggregatum-gruppen)
20 Mar – 3 Apr
15 May
2-4 wk
17 Apr
29 May
2 wk before
17 Apr
19 May
2 wk before
Shallot (sets)
Allium cepa (Aggregatum-gruppen)
22 Apr
25 May
1 wk before
22 Apr
15 May
1 wk before
Spinach
Spinacia oleracea
1 – 8 Apr
27 Jul
3-4 wk
29 Apr
17 Aug
0 wk
11 Apr
7 Aug
3 wk before
Sweet potato
Ipomoea batatas
26 May – 9 Jun
4-6 wk
7 Jul
10 wk after
Garden tomato
Solanum lycopersicum
Season too short
4 – 18 Mar
6-8 wk
29 Apr
0 wk
Tomatillo
Physalis ixocarpa
Common Bean
Phaseolus vulgaris
Season too short
1 – 15 Apr
3 Apr
2-4 wk
29 Apr
0 wk
9 May
1 wk after
White Cabbage
Brassica oleracea (White Cabbage-gruppen)
18 Mar – 1 Apr
25 Jun
4-6 wk
29 Apr
23 Jul
0 wk
Garden pea
Pisum sativum
1 – 8 Apr
27 Jun
3-4 wk
29 Apr
18 Jul
0 wk
22 Apr
8 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
31 Mar – 14 Apr
4-6 wk
12 May
2 wk after
Lemon balm
Melissa officinalis
18 Feb – 4 Mar
23 May
8-10 wk
29 Apr
18 Jul
0 wk
20 May
8 Jul
3 wk after
Dill
Anethum graveolens
22 Apr
13 Jul
1 wk before
Wild chives
Allium schoenoprasum
4 – 18 Mar
6 Jun
6-8 wk
29 Apr
18 Jul
0 wk
22 Apr
8 Jul
1 wk before
Spearmint
Mentha spicata
4 Feb – 4 Mar
23 May
8-12 wk
29 Apr
18 Jul
0 wk
20 May
8 Jul
3 wk after
Coriander
Coriandrum sativum
29 Apr
2 Aug
0 wk
9 May
23 Jul
1 wk after
Garden sage
Salvia officinalis
25 Feb – 11 Mar
8 May
8-10 wk
6 May
3 Jul
1 wk after
Common thyme
Thymus vulgaris
18 Feb – 4 Mar
13 May
8-10 wk
29 Apr
8 Jul
0 wk
Oregano
Origanum vulgare
4 – 18 Mar
27 May
6-8 wk
29 Apr
8 Jul
0 wk
20 May
28 Jun
3 wk after
Parsley
Petroselinum crispum
4 – 18 Mar
27 May
6-8 wk
29 Apr
8 Jul
0 wk
22 Apr
28 Jun
1 wk before
Rosemary
Salvia rosmarinus
28 Jan – 25 Feb
24 Mar
10-14 wk
6 May
2 Jun
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
14 – 21 Apr
3-4 wk
12 May
2 wk after
Cornflower
Centaurea cyanus
29 Apr
18 Jul
0 wk
22 Apr
8 Jul
1 wk before
Statice
Limonium sinuatum
Fleece
3 – 17 Mar
26 Mar
8-10 wk
12 May
21 May
2 wk after
Sweet William
Dianthus barbatus
4 – 18 Mar
6-8 wk
29 Apr
0 wk
4 May
1 wk after
Snow-on-the-mountain
Euphorbia marginata
Fleece
17 – 31 Mar
9 Apr
6-8 wk
12 May
21 May
2 wk after
14 Jun
7 wk after
Pinnate dahlia
Dahlia × pinnata
Fleece
11 – 25 Mar
24 Apr
6-8 wk
6 May
5 Jun
1 wk after
Pinnate dahlia (tubers)
Dahlia × pinnata
Fleece
14 Mar – 11 Apr
8 May
4-8 wk
9 May
5 Jun
1 wk after
9 May
26 May
1 wk after
Foxglove
Digitalis purpurea
18 Feb – 4 Mar
8-10 wk
29 Apr
0 wk
9 May
1 wk after
Busy lizzie
Impatiens walleriana
Fleece
26 Feb – 26 Mar
28 Mar
8-12 wk
21 May
23 May
3 wk after
Creeping zinnia
Sanvitalia procumbens
Fleece
17 – 31 Mar
19 Apr
6-8 wk
12 May
31 May
2 wk after
Hyacinth bean
Dolichos lablab
Season too short
9 – 23 Apr
4-6 wk
21 May
3 wk after
Chinese lantern
Physalis alkekengi
25 Feb – 11 Mar
8 Apr
8-10 wk
6 May
3 Jun
1 wk after
Love in a mist
Nigella damascena
29 Apr
3 Jul
0 wk
22 Apr
23 Jun
1 wk before
Strawflower
Xerochrysum bracteatum
Fleece
17 – 31 Mar
30 Mar
6-8 wk
12 May
2 wk after
14 Jun
7 wk after
Purple-top vervain
Verbena bonariensis
11 Feb – 11 Mar
8 Apr
8-12 wk
6 May
3 Jun
1 wk after
Cardoon
Cynara cardunculus
Fleece
17 Feb – 17 Mar
24 Mar
8-12 wk
12 May
19 May
2 wk after
Regal-foxtail
Ptilotus nobilis
Season too short
17 Feb – 17 Mar
8-12 wk
12 May
2 wk after
Globe amaranth
Gomphrena globosa
Season too short
17 – 31 Mar
6-8 wk
12 May
2 wk after
Corn poppy
Papaver rhoeas
29 Apr
18 Jul
0 wk
22 Apr
8 Jul
1 wk before
Snapdragon
Antirrhinum majus
4 Feb – 4 Mar
13 May
8-12 wk
29 Apr
8 Jul
0 wk
4 May
28 Jun
1 wk after
Flossflower
Ageratum houstonianum
Fleece
12 – 26 Mar
5 Apr
8-10 wk
21 May
31 May
3 wk after
Sweet pea
Lathyrus odoratus
4 – 25 Mar
3 Jun
5-8 wk
29 Apr
8 Jul
0 wk
Stock
Matthiola incana
4 – 18 Mar
6 Jun
6-8 wk
29 Apr
18 Jul
0 wk
9 May
8 Jul
1 wk after
Wormwood
Artemisia absinthium
4 – 18 Mar
7 May
6-8 wk
29 Apr
18 Jun
0 wk
9 May
8 Jun
1 wk after
Mexican sunflower
Tithonia rotundifolia
Season too short
31 Mar – 14 Apr
4-6 wk
12 May
2 wk after
Garden pansy
Viola × wittrockiana
18 Feb – 4 Mar
23 May
8-10 wk
29 Apr
18 Jul
0 wk
4 May
8 Jul
1 wk after
Petunia
Petunia
Fleece
17 Feb – 17 Mar
26 Mar
8-12 wk
12 May
21 May
2 wk after
Sweet Scabious
Scabiosa atropurpurea
11 – 25 Mar
22 Apr
6-8 wk
6 May
3 Jun
1 wk after
4 Jun
5 wk after
Common zinnia
Zinnia elegans
Greenhouse
18 Mar – 1 Apr
18 May
4-6 wk
29 Apr
15 Jun
0 wk
Common morning glory
Ipomoea purpurea
Season too short
7 – 21 Apr
3-5 wk
12 May
2 wk after
Garden cosmos
Cosmos bipinnatus
Fleece
31 Mar – 14 Apr
8 May
4-6 wk
12 May
5 Jun
2 wk after
20 May
26 May
3 wk after
Scarlet milkweed
Asclepias curassavica
Season too short
26 Feb – 26 Mar
2 Mar
8-12 wk
21 May
3 wk after
Bee balm
Monarda didyma
4 Feb – 4 Mar
23 Apr
8-12 wk
29 Apr
18 Jun
0 wk
20 May
8 Jun
3 wk after
Yarrow
Achillea millefolium
4 – 18 Mar
7 Apr
6-8 wk
29 Apr
19 May
0 wk
9 May
9 May
1 wk after
Safflower
Carthamus tinctorius
29 Apr
18 Jun
0 wk
22 Apr
8 Jun
1 wk before
Iceland poppy
Papaver nudicaule
Season too short
4 – 18 Mar
27 May
6-8 wk
29 Apr
8 Jul
0 wk
21 Mar
28 Jun
6 wk before
Bishop's flower
Ammi majus
18 Mar – 1 Apr
10 Jun
4-6 wk
29 Apr
8 Jul
0 wk
9 May
28 Jun
1 wk after
Drumsticks
Pycnosorus globosus
Greenhouse
17 Feb – 3 Mar
7 Mar
10-12 wk
12 May
16 May
2 wk after
Sunflower
Helianthus annuus
23 – 30 Apr
1 Jun
3-4 wk
21 May
22 Jun
3 wk after
20 May
12 Jun
3 wk after
China aster
Callistephus chinensis
26 Mar – 9 Apr
21 May
6-8 wk
21 May
2 Jul
3 wk after
4 Jun
22 Jun
5 wk after
Annual phlox
Phlox drummondii
Fleece
4 – 18 Mar
19 Apr
6-8 wk
29 Apr
31 May
0 wk
20 May
21 May
3 wk after
Hollyhock
Alcea rosea
4 – 18 Mar
6-8 wk
29 Apr
0 wk
9 May
1 wk after
Alpine delphinium
Delphinium elatum
4 Feb – 4 Mar
23 Apr
8-12 wk
29 Apr
18 Jun
0 wk
20 May
8 Jun
3 wk after
African marigold
Tagetes erecta
Fleece
17 – 31 Mar
19 Apr
6-8 wk
12 May
31 May
2 wk after
Black-eyed Susan
Rudbeckia hirta
11 – 25 Mar
11 May
6-8 wk
6 May
22 Jun
1 wk after
4 Jun
12 Jun
5 wk after
Wood sage
Salvia nemorosa
18 Feb – 4 Mar
13 Apr
8-10 wk
29 Apr
8 Jun
0 wk
20 May
29 May
3 wk after
Black-eyed susan vine
Thunbergia alata
Season too short
3 – 31 Mar
6-10 wk
12 May
2 wk after
California goldenpoppy
Eschscholzia californica
29 Apr
12 Jul
0 wk
22 Apr
2 Jul
1 wk before
Painted tongue
Salpiglossis sinuata
12 – 26 Mar
24 Apr
8-10 wk
21 May
19 Jun
3 wk after
Water forget-me-not
Myosotis scorpioides
4 – 18 Mar
7 May
6-8 wk
29 Apr
18 Jun
0 wk
9 May
8 Jun
1 wk after