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Method
Rel. frost
Last spring frost (0°C) 6 May Frost 9 of 10 years · 20 years of data
Frost-free season 120 days 6 May – 3 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)
18 Mar – 1 Apr
15 Jun
5-7 wk
6 May
20 Jul
0 wk
10 May
10 Jul
1 wk after
Broccoli
Brassica oleracea (Italica-gruppen)
25 Mar – 8 Apr
27 Jun
4-6 wk
6 May
25 Jul
0 wk
10 May
15 Jul
1 wk after
Chili pepper
Capsicum annuum
Season too short
26 Feb – 26 Mar
8-12 wk
21 May
2 wk after
Curly Kale
Brassica oleracea (Curly Kale-gruppen)
18 Mar – 1 Apr
10 Jun
5-7 wk
6 May
15 Jul
0 wk
6 May
5 Jul
0 wk
Garden cucumber
Cucumis sativus
Season too short
23 – 30 Apr
3-4 wk
21 May
2 wk after
Florence Fennel
Foeniculum vulgare
14 – 21 May
18 May
4-5 wk
18 Jun
6 wk after
24 Jun
7 wk after
Butter bean
Phaseolus lunatus
Season too short
26 May – 2 Jun
3-4 wk
23 Jun
7 wk after
Onion
Allium cepa (Cepa-gruppen)
11 Feb – 11 Mar
20 Mar
8-12 wk
6 May
15 May
0 wk
27 May
3 wk after
Onion (sets)
Allium cepa (Cepa-gruppen)
10 May
4 Jun
1 wk after
10 May
25 May
1 wk after
Maize
Zea mays
Season too short
9 – 16 Apr
3-4 wk
7 May
0 wk
Swiss Chard
Beta vulgaris (Flavescens-gruppen)
16 – 23 Apr
23 Jun
3-4 wk
14 May
14 Jul
1 wk after
27 May
4 Jul
3 wk after
Carrot
Daucus carota subsp. sativus var. sativus
6 May
29 Jun
0 wk
6 May
19 Jun
0 wk
Palm Kale
Brassica oleracea (Palm Kale-gruppen)
18 Mar – 1 Apr
10 Jun
5-7 wk
6 May
15 Jul
0 wk
6 May
5 Jul
0 wk
Potato
Solanum tuberosum
10 – 24 Apr
18 May
4-6 wk
22 May
15 Jun
2 wk after
22 May
5 Jun
2 wk after
Ornamental Kale
Brassica oleracea (Ornamental-gruppen)
18 Mar – 1 Apr
14 Jun
5-7 wk
6 May
19 Jul
0 wk
10 May
9 Jul
1 wk after
Pumpkin
Cucurbita pepo
Season too short
23 – 30 Apr
3-4 wk
21 May
2 wk after
Beetroot
Beta vulgaris (Conditiva-gruppen)
16 – 23 Apr
25 May
3-4 wk
14 May
15 Jun
1 wk after
27 May
5 Jun
3 wk after
Red Cabbage
Brassica oleracea (Red Cabbage-gruppen)
25 Mar – 8 Apr
22 Jun
4-6 wk
6 May
20 Jul
0 wk
Lettuce
Lactuca sativa
8 – 15 Apr
3 Jul
3-4 wk
6 May
24 Jul
0 wk
10 May
14 Jul
1 wk after
Savoy Cabbage
Brassica oleracea (Savoy Cabbage-gruppen)
25 Mar – 8 Apr
22 Jun
4-6 wk
6 May
20 Jul
0 wk
Shallot (bulbs)
Allium cepa (Aggregatum-gruppen)
8 – 22 Apr
24 May
2-4 wk
6 May
7 Jun
0 wk
6 May
28 May
0 wk
Shallot (sets)
Allium cepa (Aggregatum-gruppen)
10 May
4 Jun
1 wk after
10 May
25 May
1 wk after
Spinach
Spinacia oleracea
8 – 15 Apr
24 Jul
3-4 wk
6 May
14 Aug
0 wk
2 May
4 Aug
1 wk before
Sweet potato
Ipomoea batatas
7 – 21 Jun
4-6 wk
19 Jul
11 wk after
Garden tomato
Solanum lycopersicum
Season too short
12 – 26 Mar
6-8 wk
7 May
0 wk
Tomatillo
Physalis ixocarpa
Common Bean
Phaseolus vulgaris
Season too short
9 – 23 Apr
2-4 wk
7 May
0 wk
27 May
3 wk after
White Cabbage
Brassica oleracea (White Cabbage-gruppen)
25 Mar – 8 Apr
22 Jun
4-6 wk
6 May
20 Jul
0 wk
Garden pea
Pisum sativum
8 – 15 Apr
18 Jun
3-4 wk
6 May
9 Jul
0 wk
10 May
29 Jun
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
2 wk after
Lemon balm
Melissa officinalis
25 Feb – 11 Mar
14 May
8-10 wk
6 May
9 Jul
0 wk
10 Jun
29 Jun
5 wk after
Dill
Anethum graveolens
10 May
14 Jul
1 wk after
Wild chives
Allium schoenoprasum
11 – 25 Mar
3 Jun
6-8 wk
6 May
15 Jul
0 wk
10 May
5 Jul
1 wk after
Spearmint
Mentha spicata
11 Feb – 11 Mar
20 May
8-12 wk
6 May
15 Jul
0 wk
10 Jun
5 Jul
5 wk after
Coriander
Coriandrum sativum
6 May
3 Aug
0 wk
27 May
24 Jul
3 wk after
Garden sage
Salvia officinalis
5 – 19 Mar
5 May
8-10 wk
14 May
30 Jun
1 wk after
Common thyme
Thymus vulgaris
25 Feb – 11 Mar
10 May
8-10 wk
6 May
5 Jul
0 wk
Oregano
Origanum vulgare
11 – 25 Mar
24 May
6-8 wk
6 May
5 Jul
0 wk
10 Jun
25 Jun
5 wk after
Parsley
Petroselinum crispum
11 – 25 Mar
24 May
6-8 wk
6 May
5 Jul
0 wk
10 May
25 Jun
1 wk after
Rosemary
Salvia rosmarinus
5 Feb – 5 Mar
21 Mar
10-14 wk
14 May
30 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
23 – 30 Apr
3-4 wk
21 May
2 wk after
Cornflower
Centaurea cyanus
6 May
15 Jul
0 wk
10 May
5 Jul
1 wk after
Statice
Limonium sinuatum
Greenhouse
26 Feb – 12 Mar
2 Apr
8-10 wk
7 May
28 May
0 wk
Sweet William
Dianthus barbatus
11 – 25 Mar
6-8 wk
6 May
0 wk
22 May
2 wk after
Snow-on-the-mountain
Euphorbia marginata
Greenhouse
12 – 26 Mar
16 Apr
6-8 wk
7 May
28 May
0 wk
16 Jun
6 wk after
Pinnate dahlia
Dahlia × pinnata
Fleece
19 Mar – 2 Apr
9 Apr
6-8 wk
14 May
21 May
1 wk after
Pinnate dahlia (tubers)
Dahlia × pinnata
Fleece
1 – 29 Apr
23 Apr
4-8 wk
27 May
3 wk after
27 May
3 wk after
Foxglove
Digitalis purpurea
25 Feb – 11 Mar
8-10 wk
6 May
0 wk
27 May
3 wk after
Busy lizzie
Impatiens walleriana
Greenhouse
26 Feb – 26 Mar
21 May
8-12 wk
21 May
16 Jul
2 wk after
Creeping zinnia
Sanvitalia procumbens
Fleece
26 Mar – 9 Apr
4 Apr
6-8 wk
21 May
2 wk after
Hyacinth bean
Dolichos lablab
Season too short
21 Apr – 5 May
4-6 wk
2 Jun
4 wk after
Chinese lantern
Physalis alkekengi
5 – 19 Mar
9 Apr
8-10 wk
14 May
4 Jun
1 wk after
Love in a mist
Nigella damascena
6 May
24 Jun
0 wk
10 May
14 Jun
1 wk after
Strawflower
Xerochrysum bracteatum
Greenhouse
12 – 26 Mar
6 Apr
6-8 wk
7 May
18 May
0 wk
16 Jun
6 wk after
Purple-top vervain
Verbena bonariensis
19 Feb – 19 Mar
9 Apr
8-12 wk
14 May
4 Jun
1 wk after
Cardoon
Cynara cardunculus
Greenhouse
12 Feb – 12 Mar
21 Mar
8-12 wk
7 May
16 May
0 wk
Regal-foxtail
Ptilotus nobilis
Season too short
26 Feb – 26 Mar
8-12 wk
21 May
2 wk after
Globe amaranth
Gomphrena globosa
Season too short
26 Mar – 9 Apr
6-8 wk
21 May
2 wk after
Corn poppy
Papaver rhoeas
6 May
9 Jul
0 wk
10 May
29 Jun
1 wk after
Snapdragon
Antirrhinum majus
11 Feb – 11 Mar
4 May
8-12 wk
6 May
29 Jun
0 wk
22 May
19 Jun
2 wk after
Flossflower
Ageratum houstonianum
Greenhouse
12 – 26 Mar
12 Apr
8-10 wk
21 May
7 Jun
2 wk after
Sweet pea
Lathyrus odoratus
11 Mar – 1 Apr
31 May
5-8 wk
6 May
5 Jul
0 wk
Stock
Matthiola incana
11 – 25 Mar
28 May
6-8 wk
6 May
9 Jul
0 wk
27 May
29 Jun
3 wk after
Wormwood
Artemisia absinthium
11 – 25 Mar
4 May
6-8 wk
6 May
15 Jun
0 wk
27 May
5 Jun
3 wk after
Mexican sunflower
Tithonia rotundifolia
Season too short
9 – 23 Apr
4-6 wk
21 May
2 wk after
Garden pansy
Viola × wittrockiana
25 Feb – 11 Mar
20 May
8-10 wk
6 May
15 Jul
0 wk
22 May
5 Jul
2 wk after
Petunia
Petunia
Greenhouse
12 Feb – 12 Mar
2 Apr
8-12 wk
7 May
28 May
0 wk
Sweet Scabious
Scabiosa atropurpurea
19 Mar – 2 Apr
23 Apr
6-8 wk
14 May
4 Jun
1 wk after
24 Jun
7 wk after
Common zinnia
Zinnia elegans
Greenhouse
26 Mar – 9 Apr
3 May
4-6 wk
7 May
31 May
0 wk
Common morning glory
Ipomoea purpurea
Season too short
16 – 30 Apr
3-5 wk
21 May
2 wk after
Garden cosmos
Cosmos bipinnatus
Fleece
9 – 23 Apr
23 Apr
4-6 wk
21 May
21 May
2 wk after
10 Jun
5 wk after
Scarlet milkweed
Asclepias curassavica
Season too short
10 Mar – 7 Apr
8-12 wk
2 Jun
4 wk after
Bee balm
Monarda didyma
11 Feb – 11 Mar
14 Apr
8-12 wk
6 May
9 Jun
0 wk
10 Jun
5 wk after
Yarrow
Achillea millefolium
11 – 25 Mar
4 Apr
6-8 wk
6 May
16 May
0 wk
27 May
3 wk after
Safflower
Carthamus tinctorius
6 May
15 Jun
0 wk
10 May
5 Jun
1 wk after
Iceland poppy
Papaver nudicaule
Season too short
11 – 25 Mar
24 May
6-8 wk
6 May
5 Jul
0 wk
18 Apr
25 Jun
3 wk before
Bishop's flower
Ammi majus
25 Mar – 8 Apr
1 Jun
4-6 wk
6 May
29 Jun
0 wk
27 May
19 Jun
3 wk after
Drumsticks
Pycnosorus globosus
Season too short
26 Feb – 12 Mar
10-12 wk
21 May
2 wk after
Sunflower
Helianthus annuus
5 – 12 May
29 May
3-4 wk
2 Jun
19 Jun
4 wk after
10 Jun
5 wk after
China aster
Callistephus chinensis
7 – 21 Apr
18 May
6-8 wk
2 Jun
29 Jun
4 wk after
24 Jun
7 wk after
Annual phlox
Phlox drummondii
Fleece
12 – 26 Mar
4 Apr
6-8 wk
7 May
16 May
0 wk
10 Jun
5 wk after
Hollyhock
Alcea rosea
11 – 25 Mar
6-8 wk
6 May
0 wk
27 May
3 wk after
Alpine delphinium
Delphinium elatum
11 Feb – 11 Mar
14 Apr
8-12 wk
6 May
9 Jun
0 wk
10 Jun
5 wk after
African marigold
Tagetes erecta
Fleece
26 Mar – 9 Apr
4 Apr
6-8 wk
21 May
2 wk after
Black-eyed Susan
Rudbeckia hirta
19 Mar – 2 Apr
8 May
6-8 wk
14 May
19 Jun
1 wk after
24 Jun
7 wk after
Wood sage
Salvia nemorosa
25 Feb – 11 Mar
4 Apr
8-10 wk
6 May
30 May
0 wk
10 Jun
5 wk after
Black-eyed susan vine
Thunbergia alata
Season too short
12 Mar – 9 Apr
6-10 wk
21 May
2 wk after
California goldenpoppy
Eschscholzia californica
6 May
6 Jul
0 wk
10 May
26 Jun
1 wk after
Painted tongue
Salpiglossis sinuata
24 Mar – 7 Apr
20 Apr
8-10 wk
2 Jun
15 Jun
4 wk after
Water forget-me-not
Myosotis scorpioides
11 – 25 Mar
4 May
6-8 wk
6 May
15 Jun
0 wk
27 May
5 Jun
3 wk after