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Method
Rel. frost
Last spring frost (0°C) 8 May Frost 9 of 10 years · 20 years of data
Frost-free season 102 days 8 May – 18 Aug
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)
20 Mar – 3 Apr
13 Jun
5-7 wk
8 May
18 Jul
0 wk
9 May
8 Jul
0 wk
Broccoli
Brassica oleracea (Italica-gruppen)
27 Mar – 10 Apr
25 Jun
4-6 wk
8 May
23 Jul
0 wk
9 May
13 Jul
0 wk
Chili pepper
Capsicum annuum
Season too short
24 Feb – 24 Mar
8-12 wk
19 May
2 wk after
Curly Kale
Brassica oleracea (Curly Kale-gruppen)
20 Mar – 3 Apr
8 Jun
5-7 wk
8 May
13 Jul
0 wk
8 May
3 Jul
0 wk
Garden cucumber
Cucumis sativus
Season too short
21 – 28 Apr
3-4 wk
19 May
2 wk after
Florence Fennel
Foeniculum vulgare
Fleece
23 – 30 Apr
26 May
4-5 wk
28 May
23 Jun
3 wk after
2 Jun
13 Jun
4 wk after
Butter bean
Phaseolus lunatus
Season too short
21 – 28 May
3-4 wk
18 Jun
6 wk after
Onion
Allium cepa (Cepa-gruppen)
13 Feb – 13 Mar
12 Mar
8-12 wk
8 May
0 wk
21 May
2 wk after
Onion (sets)
Allium cepa (Cepa-gruppen)
9 May
27 May
0 wk
9 May
17 May
0 wk
Maize
Zea mays
Season too short
14 – 21 Apr
3-4 wk
12 May
1 wk after
Swiss Chard
Beta vulgaris (Flavescens-gruppen)
16 – 23 Apr
22 Jun
3-4 wk
14 May
13 Jul
1 wk after
21 May
3 Jul
2 wk after
Carrot
Daucus carota subsp. sativus var. sativus
8 May
3 Jul
0 wk
8 May
23 Jun
0 wk
Palm Kale
Brassica oleracea (Palm Kale-gruppen)
20 Mar – 3 Apr
8 Jun
5-7 wk
8 May
13 Jul
0 wk
8 May
3 Jul
0 wk
Potato
Solanum tuberosum
6 – 20 Apr
9 May
4-6 wk
18 May
6 Jun
1 wk after
18 May
27 May
1 wk after
Ornamental Kale
Brassica oleracea (Ornamental-gruppen)
20 Mar – 3 Apr
18 Jun
5-7 wk
8 May
23 Jul
0 wk
9 May
13 Jul
0 wk
Pumpkin
Cucurbita pepo
Season too short
21 – 28 Apr
3-4 wk
19 May
2 wk after
Beetroot
Beta vulgaris (Conditiva-gruppen)
16 – 23 Apr
16 May
3-4 wk
14 May
6 Jun
1 wk after
21 May
27 May
2 wk after
Red Cabbage
Brassica oleracea (Red Cabbage-gruppen)
27 Mar – 10 Apr
20 Jun
4-6 wk
8 May
18 Jul
0 wk
Lettuce
Lactuca sativa
10 – 17 Apr
7 Jul
3-4 wk
8 May
28 Jul
0 wk
9 May
18 Jul
0 wk
Savoy Cabbage
Brassica oleracea (Savoy Cabbage-gruppen)
27 Mar – 10 Apr
20 Jun
4-6 wk
8 May
18 Jul
0 wk
Shallot (bulbs)
Allium cepa (Aggregatum-gruppen)
10 – 24 Apr
16 May
2-4 wk
8 May
30 May
0 wk
8 May
20 May
0 wk
Shallot (sets)
Allium cepa (Aggregatum-gruppen)
9 May
27 May
0 wk
9 May
17 May
0 wk
Spinach
Spinacia oleracea
10 – 17 Apr
22 Jul
3-4 wk
8 May
12 Aug
0 wk
5 May
2 Aug
0 wk
Sweet potato
Ipomoea batatas
2 – 16 Jun
4-6 wk
14 Jul
10 wk after
Garden tomato
Solanum lycopersicum
Season too short
17 – 31 Mar
6-8 wk
12 May
1 wk after
Tomatillo
Physalis ixocarpa
Common Bean
Phaseolus vulgaris
Season too short
14 – 28 Apr
2-4 wk
12 May
1 wk after
21 May
2 wk after
White Cabbage
Brassica oleracea (White Cabbage-gruppen)
27 Mar – 10 Apr
20 Jun
4-6 wk
8 May
18 Jul
0 wk
Garden pea
Pisum sativum
10 – 17 Apr
22 Jun
3-4 wk
8 May
13 Jul
0 wk
9 May
3 Jul
0 wk

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
7 – 21 Apr
4-6 wk
19 May
2 wk after
Lemon balm
Melissa officinalis
27 Feb – 13 Mar
18 May
8-10 wk
8 May
13 Jul
0 wk
2 Jun
3 Jul
4 wk after
Dill
Anethum graveolens
9 May
13 Jul
0 wk
Wild chives
Allium schoenoprasum
13 – 27 Mar
1 Jun
6-8 wk
8 May
13 Jul
0 wk
9 May
3 Jul
0 wk
Spearmint
Mentha spicata
13 Feb – 13 Mar
18 May
8-12 wk
8 May
13 Jul
0 wk
2 Jun
3 Jul
4 wk after
Coriander
Coriandrum sativum
8 May
2 Aug
0 wk
21 May
23 Jul
2 wk after
Garden sage
Salvia officinalis
5 – 19 Mar
3 May
8-10 wk
14 May
28 Jun
1 wk after
Common thyme
Thymus vulgaris
27 Feb – 13 Mar
8 May
8-10 wk
8 May
3 Jul
0 wk
Oregano
Origanum vulgare
13 – 27 Mar
22 May
6-8 wk
8 May
3 Jul
0 wk
2 Jun
23 Jun
4 wk after
Parsley
Petroselinum crispum
13 – 27 Mar
22 May
6-8 wk
8 May
3 Jul
0 wk
9 May
23 Jun
0 wk
Rosemary
Salvia rosmarinus
5 Feb – 5 Mar
16 Mar
10-14 wk
14 May
25 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
21 – 28 Apr
3-4 wk
19 May
2 wk after
Cornflower
Centaurea cyanus
8 May
13 Jul
0 wk
9 May
3 Jul
0 wk
Statice
Limonium sinuatum
Season too short
3 – 17 Mar
14 Mar
8-10 wk
12 May
1 wk after
Sweet William
Dianthus barbatus
13 – 27 Mar
6-8 wk
8 May
0 wk
18 May
1 wk after
Snow-on-the-mountain
Euphorbia marginata
Season too short
17 – 31 Mar
28 Mar
6-8 wk
12 May
1 wk after
9 Jun
5 wk after
Pinnate dahlia
Dahlia × pinnata
Greenhouse
13 – 27 Mar
31 Mar
6-8 wk
8 May
12 May
0 wk
Pinnate dahlia (tubers)
Dahlia × pinnata
Fleece
26 Mar – 23 Apr
7 Apr
4-8 wk
21 May
2 wk after
21 May
2 wk after
Foxglove
Digitalis purpurea
27 Feb – 13 Mar
8-10 wk
8 May
0 wk
21 May
2 wk after
Busy lizzie
Impatiens walleriana
Fleece
5 Mar – 2 Apr
6 Apr
8-12 wk
28 May
1 Jun
3 wk after
Creeping zinnia
Sanvitalia procumbens
Greenhouse
17 – 31 Mar
7 Apr
6-8 wk
12 May
19 May
1 wk after
Hyacinth bean
Dolichos lablab
Season too short
16 – 30 Apr
4-6 wk
28 May
3 wk after
Chinese lantern
Physalis alkekengi
5 – 19 Mar
8 Apr
8-10 wk
14 May
3 Jun
1 wk after
Love in a mist
Nigella damascena
8 May
28 Jun
0 wk
9 May
18 Jun
0 wk
Strawflower
Xerochrysum bracteatum
Season too short
17 – 31 Mar
18 Mar
6-8 wk
12 May
1 wk after
9 Jun
5 wk after
Purple-top vervain
Verbena bonariensis
19 Feb – 19 Mar
8 Apr
8-12 wk
14 May
3 Jun
1 wk after
Cardoon
Cynara cardunculus
Fleece
24 Feb – 24 Mar
19 Mar
8-12 wk
19 May
2 wk after
Regal-foxtail
Ptilotus nobilis
Season too short
24 Feb – 24 Mar
8-12 wk
19 May
2 wk after
Globe amaranth
Gomphrena globosa
Season too short
24 Mar – 7 Apr
6-8 wk
19 May
2 wk after
Corn poppy
Papaver rhoeas
8 May
13 Jul
0 wk
9 May
3 Jul
0 wk
Snapdragon
Antirrhinum majus
13 Feb – 13 Mar
8 May
8-12 wk
8 May
3 Jul
0 wk
18 May
23 Jun
1 wk after
Flossflower
Ageratum houstonianum
Greenhouse
10 – 24 Mar
24 Mar
8-10 wk
19 May
19 May
2 wk after
Sweet pea
Lathyrus odoratus
13 Mar – 3 Apr
29 May
5-8 wk
8 May
3 Jul
0 wk
Stock
Matthiola incana
13 – 27 Mar
1 Jun
6-8 wk
8 May
13 Jul
0 wk
21 May
3 Jul
2 wk after
Wormwood
Artemisia absinthium
13 – 27 Mar
2 May
6-8 wk
8 May
13 Jun
0 wk
21 May
3 Jun
2 wk after
Mexican sunflower
Tithonia rotundifolia
Season too short
7 – 21 Apr
4-6 wk
19 May
2 wk after
Garden pansy
Viola × wittrockiana
27 Feb – 13 Mar
18 May
8-10 wk
8 May
13 Jul
0 wk
18 May
3 Jul
1 wk after
Petunia
Petunia
Season too short
17 Feb – 17 Mar
14 Mar
8-12 wk
12 May
1 wk after
Sweet Scabious
Scabiosa atropurpurea
19 Mar – 2 Apr
22 Apr
6-8 wk
14 May
3 Jun
1 wk after
20 Jun
6 wk after
Common zinnia
Zinnia elegans
Greenhouse
31 Mar – 14 Apr
17 Apr
4-6 wk
12 May
15 May
1 wk after
Common morning glory
Ipomoea purpurea
Season too short
14 – 28 Apr
3-5 wk
19 May
2 wk after
Garden cosmos
Cosmos bipinnatus
Season too short
31 Mar – 14 Apr
14 Apr
4-6 wk
12 May
12 May
1 wk after
21 May
2 wk after
Scarlet milkweed
Asclepias curassavica
Season too short
5 Mar – 2 Apr
11 Mar
8-12 wk
28 May
3 wk after
Bee balm
Monarda didyma
13 Feb – 13 Mar
18 Apr
8-12 wk
8 May
13 Jun
0 wk
2 Jun
3 Jun
4 wk after
Yarrow
Achillea millefolium
13 – 27 Mar
2 Apr
6-8 wk
8 May
14 May
0 wk
21 May
2 wk after
Safflower
Carthamus tinctorius
8 May
13 Jun
0 wk
9 May
3 Jun
0 wk
Iceland poppy
Papaver nudicaule
Season too short
13 – 27 Mar
22 May
6-8 wk
8 May
3 Jul
0 wk
22 Apr
23 Jun
2 wk before
Bishop's flower
Ammi majus
27 Mar – 10 Apr
5 Jun
4-6 wk
8 May
3 Jul
0 wk
21 May
23 Jun
2 wk after
Drumsticks
Pycnosorus globosus
Season too short
24 Feb – 10 Mar
10-12 wk
19 May
2 wk after
Sunflower
Helianthus annuus
30 Apr – 7 May
24 May
3-4 wk
28 May
14 Jun
3 wk after
2 Jun
4 Jun
4 wk after
China aster
Callistephus chinensis
2 – 16 Apr
13 May
6-8 wk
28 May
24 Jun
3 wk after
20 Jun
6 wk after
Annual phlox
Phlox drummondii
Fleece
17 – 31 Mar
1 Apr
6-8 wk
12 May
13 May
1 wk after
2 Jun
4 wk after
Hollyhock
Alcea rosea
13 – 27 Mar
6-8 wk
8 May
0 wk
21 May
2 wk after
Alpine delphinium
Delphinium elatum
13 Feb – 13 Mar
18 Apr
8-12 wk
8 May
13 Jun
0 wk
2 Jun
3 Jun
4 wk after
African marigold
Tagetes erecta
Greenhouse
17 – 31 Mar
7 Apr
6-8 wk
12 May
19 May
1 wk after
Black-eyed Susan
Rudbeckia hirta
19 Mar – 2 Apr
3 May
6-8 wk
14 May
14 Jun
1 wk after
20 Jun
6 wk after
Wood sage
Salvia nemorosa
27 Feb – 13 Mar
8 Apr
8-10 wk
8 May
3 Jun
0 wk
2 Jun
4 wk after
Black-eyed susan vine
Thunbergia alata
Season too short
10 Mar – 7 Apr
6-10 wk
19 May
2 wk after
California goldenpoppy
Eschscholzia californica
8 May
10 Jul
0 wk
9 May
30 Jun
0 wk
Painted tongue
Salpiglossis sinuata
Fleece
10 – 24 Mar
28 Apr
8-10 wk
19 May
23 Jun
2 wk after
Water forget-me-not
Myosotis scorpioides
13 – 27 Mar
2 May
6-8 wk
8 May
13 Jun
0 wk
21 May
3 Jun
2 wk after