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Method
Rel. frost
Last spring frost (0°C) 4 May Frost 9 of 10 years · 20 years of data
Frost-free season 125 days 4 May – 6 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)
16 – 30 Mar
17 Jun
5-7 wk
4 May
22 Jul
0 wk
27 Apr
12 Jul
1 wk before
Broccoli
Brassica oleracea (Italica-gruppen)
23 Mar – 6 Apr
29 Jun
4-6 wk
4 May
27 Jul
0 wk
27 Apr
17 Jul
1 wk before
Chili pepper
Capsicum annuum
Season too short
22 Feb – 22 Mar
8-12 wk
17 May
2 wk after
Curly Kale
Brassica oleracea (Curly Kale-gruppen)
16 – 30 Mar
12 Jun
5-7 wk
4 May
17 Jul
0 wk
22 Apr
7 Jul
2 wk before
Garden cucumber
Cucumis sativus
Season too short
19 – 26 Apr
3-4 wk
17 May
2 wk after
Florence Fennel
Foeniculum vulgare
Fleece
21 – 28 Apr
22 May
4-5 wk
26 May
19 Jun
3 wk after
25 May
9 Jun
3 wk after
Butter bean
Phaseolus lunatus
Season too short
22 – 29 May
3-4 wk
19 Jun
7 wk after
Onion
Allium cepa (Cepa-gruppen)
9 Feb – 9 Mar
22 Mar
8-12 wk
4 May
17 May
0 wk
14 May
1 wk after
Onion (sets)
Allium cepa (Cepa-gruppen)
27 Apr
6 Jun
1 wk before
27 Apr
27 May
1 wk before
Maize
Zea mays
Season too short
6 – 13 Apr
3-4 wk
4 May
0 wk
Swiss Chard
Beta vulgaris (Flavescens-gruppen)
13 – 20 Apr
18 Jun
3-4 wk
11 May
9 Jul
1 wk after
14 May
29 Jun
1 wk after
Carrot
Daucus carota subsp. sativus var. sativus
4 May
29 Jun
0 wk
22 Apr
19 Jun
2 wk before
Palm Kale
Brassica oleracea (Palm Kale-gruppen)
16 – 30 Mar
12 Jun
5-7 wk
4 May
17 Jul
0 wk
22 Apr
7 Jul
2 wk before
Potato
Solanum tuberosum
28 Mar – 11 Apr
21 May
4-6 wk
9 May
18 Jun
1 wk after
9 May
8 Jun
1 wk after
Ornamental Kale
Brassica oleracea (Ornamental-gruppen)
16 – 30 Mar
14 Jun
5-7 wk
4 May
19 Jul
0 wk
27 Apr
9 Jul
1 wk before
Pumpkin
Cucurbita pepo
Season too short
19 – 26 Apr
3-4 wk
17 May
2 wk after
Beetroot
Beta vulgaris (Conditiva-gruppen)
13 – 20 Apr
26 May
3-4 wk
11 May
16 Jun
1 wk after
14 May
6 Jun
1 wk after
Red Cabbage
Brassica oleracea (Red Cabbage-gruppen)
23 Mar – 6 Apr
24 Jun
4-6 wk
4 May
22 Jul
0 wk
Lettuce
Lactuca sativa
6 – 13 Apr
3 Jul
3-4 wk
4 May
24 Jul
0 wk
27 Apr
14 Jul
1 wk before
Savoy Cabbage
Brassica oleracea (Savoy Cabbage-gruppen)
23 Mar – 6 Apr
24 Jun
4-6 wk
4 May
22 Jul
0 wk
Shallot (bulbs)
Allium cepa (Aggregatum-gruppen)
25 Mar – 8 Apr
31 May
2-4 wk
22 Apr
14 Jun
2 wk before
22 Apr
4 Jun
2 wk before
Shallot (sets)
Allium cepa (Aggregatum-gruppen)
27 Apr
6 Jun
1 wk before
27 Apr
27 May
1 wk before
Spinach
Spinacia oleracea
6 – 13 Apr
26 Jul
3-4 wk
4 May
16 Aug
0 wk
16 Apr
6 Aug
3 wk before
Sweet potato
Ipomoea batatas
31 May – 14 Jun
4-6 wk
12 Jul
10 wk after
Garden tomato
Solanum lycopersicum
Season too short
9 – 23 Mar
6-8 wk
4 May
0 wk
Tomatillo
Physalis ixocarpa
Common Bean
Phaseolus vulgaris
Season too short
6 – 20 Apr
7 Apr
2-4 wk
4 May
0 wk
14 May
1 wk after
White Cabbage
Brassica oleracea (White Cabbage-gruppen)
23 Mar – 6 Apr
24 Jun
4-6 wk
4 May
22 Jul
0 wk
Garden pea
Pisum sativum
6 – 13 Apr
18 Jun
3-4 wk
4 May
9 Jul
0 wk
27 Apr
29 Jun
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
5 – 19 Apr
4-6 wk
17 May
2 wk after
Lemon balm
Melissa officinalis
23 Feb – 9 Mar
14 May
8-10 wk
4 May
9 Jul
0 wk
25 May
29 Jun
3 wk after
Dill
Anethum graveolens
27 Apr
9 Jul
1 wk before
Wild chives
Allium schoenoprasum
9 – 23 Mar
5 Jun
6-8 wk
4 May
17 Jul
0 wk
27 Apr
7 Jul
1 wk before
Spearmint
Mentha spicata
9 Feb – 9 Mar
22 May
8-12 wk
4 May
17 Jul
0 wk
25 May
7 Jul
3 wk after
Coriander
Coriandrum sativum
4 May
29 Jul
0 wk
14 May
19 Jul
1 wk after
Garden sage
Salvia officinalis
2 – 16 Mar
7 May
8-10 wk
11 May
2 Jul
1 wk after
Common thyme
Thymus vulgaris
23 Feb – 9 Mar
12 May
8-10 wk
4 May
7 Jul
0 wk
Oregano
Origanum vulgare
9 – 23 Mar
26 May
6-8 wk
4 May
7 Jul
0 wk
25 May
27 Jun
3 wk after
Parsley
Petroselinum crispum
9 – 23 Mar
26 May
6-8 wk
4 May
7 Jul
0 wk
27 Apr
27 Jun
1 wk before
Rosemary
Salvia rosmarinus
2 Feb – 2 Mar
18 Mar
10-14 wk
11 May
27 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
19 – 26 Apr
3-4 wk
17 May
2 wk after
Cornflower
Centaurea cyanus
4 May
17 Jul
0 wk
27 Apr
7 Jul
1 wk before
Statice
Limonium sinuatum
Fleece
8 – 22 Mar
16 Mar
8-10 wk
17 May
2 wk after
Sweet William
Dianthus barbatus
9 – 23 Mar
6-8 wk
4 May
0 wk
9 May
1 wk after
Snow-on-the-mountain
Euphorbia marginata
Fleece
22 Mar – 5 Apr
30 Mar
6-8 wk
17 May
2 wk after
19 Jun
7 wk after
Pinnate dahlia
Dahlia × pinnata
Fleece
16 – 30 Mar
9 Apr
6-8 wk
11 May
21 May
1 wk after
Pinnate dahlia (tubers)
Dahlia × pinnata
Fleece
19 Mar – 16 Apr
23 Apr
4-8 wk
14 May
21 May
1 wk after
14 May
1 wk after
Foxglove
Digitalis purpurea
23 Feb – 9 Mar
8-10 wk
4 May
0 wk
14 May
1 wk after
Busy lizzie
Impatiens walleriana
Greenhouse
22 Feb – 22 Mar
21 May
8-12 wk
17 May
16 Jul
2 wk after
Creeping zinnia
Sanvitalia procumbens
Fleece
22 Mar – 5 Apr
9 Apr
6-8 wk
17 May
21 May
2 wk after
Hyacinth bean
Dolichos lablab
Season too short
14 – 28 Apr
4-6 wk
26 May
3 wk after
Chinese lantern
Physalis alkekengi
2 – 16 Mar
4 Apr
8-10 wk
11 May
30 May
1 wk after
Love in a mist
Nigella damascena
4 May
24 Jun
0 wk
27 Apr
14 Jun
1 wk before
Strawflower
Xerochrysum bracteatum
Greenhouse
9 – 23 Mar
30 Mar
6-8 wk
4 May
11 May
0 wk
1 Jun
4 wk after
Purple-top vervain
Verbena bonariensis
16 Feb – 16 Mar
4 Apr
8-12 wk
11 May
30 May
1 wk after
Cardoon
Cynara cardunculus
Greenhouse
9 Feb – 9 Mar
23 Mar
8-12 wk
4 May
18 May
0 wk
Regal-foxtail
Ptilotus nobilis
Season too short
22 Feb – 22 Mar
8-12 wk
17 May
2 wk after
Globe amaranth
Gomphrena globosa
Season too short
22 Mar – 5 Apr
6-8 wk
17 May
2 wk after
Corn poppy
Papaver rhoeas
4 May
9 Jul
0 wk
27 Apr
29 Jun
1 wk before
Snapdragon
Antirrhinum majus
9 Feb – 9 Mar
4 May
8-12 wk
4 May
29 Jun
0 wk
9 May
19 Jun
1 wk after
Flossflower
Ageratum houstonianum
Greenhouse
8 – 22 Mar
5 Apr
8-10 wk
17 May
31 May
2 wk after
Sweet pea
Lathyrus odoratus
9 – 30 Mar
2 Jun
5-8 wk
4 May
7 Jul
0 wk
Stock
Matthiola incana
9 – 23 Mar
28 May
6-8 wk
4 May
9 Jul
0 wk
14 May
29 Jun
1 wk after
Wormwood
Artemisia absinthium
9 – 23 Mar
6 May
6-8 wk
4 May
17 Jun
0 wk
14 May
7 Jun
1 wk after
Mexican sunflower
Tithonia rotundifolia
Season too short
5 – 19 Apr
4-6 wk
17 May
2 wk after
Garden pansy
Viola × wittrockiana
23 Feb – 9 Mar
22 May
8-10 wk
4 May
17 Jul
0 wk
9 May
7 Jul
1 wk after
Petunia
Petunia
Fleece
22 Feb – 22 Mar
16 Mar
8-12 wk
17 May
2 wk after
Sweet Scabious
Scabiosa atropurpurea
16 – 30 Mar
18 Apr
6-8 wk
11 May
30 May
1 wk after
9 Jun
5 wk after
Common zinnia
Zinnia elegans
Greenhouse
23 Mar – 6 Apr
3 May
4-6 wk
4 May
31 May
0 wk
Common morning glory
Ipomoea purpurea
Season too short
12 – 26 Apr
3-5 wk
17 May
2 wk after
Garden cosmos
Cosmos bipinnatus
Fleece
5 – 19 Apr
23 Apr
4-6 wk
17 May
21 May
2 wk after
25 May
3 wk after
Scarlet milkweed
Asclepias curassavica
Season too short
3 – 31 Mar
6 Mar
8-12 wk
26 May
3 wk after
Bee balm
Monarda didyma
9 Feb – 9 Mar
14 Apr
8-12 wk
4 May
9 Jun
0 wk
25 May
30 May
3 wk after
Yarrow
Achillea millefolium
9 – 23 Mar
6 Apr
6-8 wk
4 May
18 May
0 wk
14 May
1 wk after
Safflower
Carthamus tinctorius
4 May
17 Jun
0 wk
27 Apr
7 Jun
1 wk before
Iceland poppy
Papaver nudicaule
Season too short
9 – 23 Mar
26 May
6-8 wk
4 May
7 Jul
0 wk
26 Mar
27 Jun
6 wk before
Bishop's flower
Ammi majus
23 Mar – 6 Apr
1 Jun
4-6 wk
4 May
29 Jun
0 wk
14 May
19 Jun
1 wk after
Drumsticks
Pycnosorus globosus
Season too short
22 Feb – 8 Mar
10-12 wk
17 May
2 wk after
Sunflower
Helianthus annuus
28 Apr – 5 May
26 May
3-4 wk
26 May
16 Jun
3 wk after
25 May
6 Jun
3 wk after
China aster
Callistephus chinensis
31 Mar – 14 Apr
15 May
6-8 wk
26 May
26 Jun
3 wk after
9 Jun
16 Jun
5 wk after
Annual phlox
Phlox drummondii
Fleece
9 – 23 Mar
9 Apr
6-8 wk
4 May
21 May
0 wk
25 May
3 wk after
Hollyhock
Alcea rosea
9 – 23 Mar
6-8 wk
4 May
0 wk
14 May
1 wk after
Alpine delphinium
Delphinium elatum
9 Feb – 9 Mar
14 Apr
8-12 wk
4 May
9 Jun
0 wk
25 May
30 May
3 wk after
African marigold
Tagetes erecta
Fleece
22 Mar – 5 Apr
9 Apr
6-8 wk
17 May
21 May
2 wk after
Black-eyed Susan
Rudbeckia hirta
16 – 30 Mar
5 May
6-8 wk
11 May
16 Jun
1 wk after
9 Jun
5 wk after
Wood sage
Salvia nemorosa
23 Feb – 9 Mar
4 Apr
8-10 wk
4 May
30 May
0 wk
25 May
3 wk after
Black-eyed susan vine
Thunbergia alata
Season too short
8 Mar – 5 Apr
6-10 wk
17 May
2 wk after
California goldenpoppy
Eschscholzia californica
4 May
8 Jul
0 wk
27 Apr
28 Jun
1 wk before
Painted tongue
Salpiglossis sinuata
Fleece
8 – 22 Mar
24 Apr
8-10 wk
17 May
19 Jun
2 wk after
Water forget-me-not
Myosotis scorpioides
9 – 23 Mar
6 May
6-8 wk
4 May
17 Jun
0 wk
14 May
7 Jun
1 wk after