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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 129 days 10 May – 16 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
17 Jun
5-7 wk
10 May
22 Jul
0 wk
3 May
12 Jul
1 wk before
Broccoli
Brassica oleracea (Italica-gruppen)
29 Mar – 12 Apr
29 Jun
4-6 wk
10 May
27 Jul
0 wk
3 May
17 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
12 Jun
5-7 wk
10 May
17 Jul
0 wk
28 Apr
7 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
30 May
4-5 wk
30 May
27 Jun
3 wk after
31 May
17 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
26 Jun
3-4 wk
15 May
17 Jul
1 wk after
20 May
7 Jul
1 wk after
Carrot
Daucus carota subsp. sativus var. sativus
10 May
7 Jul
0 wk
28 Apr
27 Jun
2 wk before
Palm Kale
Brassica oleracea (Palm Kale-gruppen)
22 Mar – 5 Apr
12 Jun
5-7 wk
10 May
17 Jul
0 wk
28 Apr
7 Jul
2 wk before
Potato
Solanum tuberosum
3 – 17 Apr
25 Apr
4-6 wk
15 May
23 May
1 wk after
15 May
1 wk after
Ornamental Kale
Brassica oleracea (Ornamental-gruppen)
22 Mar – 5 Apr
22 Jun
5-7 wk
10 May
27 Jul
0 wk
3 May
17 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)
Fleece
12 – 19 Apr
12 May
3-4 wk
10 May
2 Jun
0 wk
9 May
23 May
0 wk
Red Cabbage
Brassica oleracea (Red Cabbage-gruppen)
29 Mar – 12 Apr
24 Jun
4-6 wk
10 May
22 Jul
0 wk
Lettuce
Lactuca sativa
12 – 19 Apr
11 Jul
3-4 wk
10 May
1 Aug
0 wk
3 May
22 Jul
1 wk before
Savoy Cabbage
Brassica oleracea (Savoy Cabbage-gruppen)
29 Mar – 12 Apr
24 Jun
4-6 wk
10 May
22 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
26 Jul
3-4 wk
10 May
16 Aug
0 wk
22 Apr
6 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
24 Jun
4-6 wk
10 May
22 Jul
0 wk
Garden pea
Pisum sativum
12 – 19 Apr
26 Jun
3-4 wk
10 May
17 Jul
0 wk
3 May
7 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
22 May
8-10 wk
10 May
17 Jul
0 wk
31 May
7 Jul
3 wk after
Dill
Anethum graveolens
3 May
17 Jul
1 wk before
Wild chives
Allium schoenoprasum
15 – 29 Mar
5 Jun
6-8 wk
10 May
17 Jul
0 wk
3 May
7 Jul
1 wk before
Spearmint
Mentha spicata
15 Feb – 15 Mar
22 May
8-12 wk
10 May
17 Jul
0 wk
31 May
7 Jul
3 wk after
Coriander
Coriandrum sativum
10 May
6 Aug
0 wk
20 May
27 Jul
1 wk after
Garden sage
Salvia officinalis
6 – 20 Mar
7 May
8-10 wk
15 May
2 Jul
1 wk after
Common thyme
Thymus vulgaris
1 – 15 Mar
12 May
8-10 wk
10 May
7 Jul
0 wk
Oregano
Origanum vulgare
15 – 29 Mar
26 May
6-8 wk
10 May
7 Jul
0 wk
31 May
27 Jun
3 wk after
Parsley
Petroselinum crispum
15 – 29 Mar
26 May
6-8 wk
10 May
7 Jul
0 wk
3 May
27 Jun
1 wk before
Rosemary
Salvia rosmarinus
6 Feb – 6 Mar
28 Mar
10-14 wk
15 May
6 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
22 – 29 Apr
3-4 wk
20 May
1 wk after
Cornflower
Centaurea cyanus
10 May
17 Jul
0 wk
3 May
7 Jul
1 wk before
Statice
Limonium sinuatum
Greenhouse
3 – 17 Mar
11 Apr
8-10 wk
12 May
6 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
25 Apr
6-8 wk
12 May
6 Jun
0 wk
7 Jun
4 wk after
Pinnate dahlia
Dahlia × pinnata
Greenhouse
15 – 29 Mar
29 Apr
6-8 wk
10 May
10 Jun
0 wk
Pinnate dahlia (tubers)
Dahlia × pinnata
Greenhouse
14 Mar – 11 Apr
13 May
4-8 wk
9 May
10 Jun
0 wk
9 May
31 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
13 Apr
8-12 wk
20 May
8 Jun
1 wk after
Creeping zinnia
Sanvitalia procumbens
Greenhouse
17 – 31 Mar
5 May
6-8 wk
12 May
16 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
12 Apr
8-10 wk
15 May
7 Jun
1 wk after
Love in a mist
Nigella damascena
10 May
2 Jul
0 wk
3 May
22 Jun
1 wk before
Strawflower
Xerochrysum bracteatum
Greenhouse
17 – 31 Mar
15 Apr
6-8 wk
12 May
27 May
0 wk
7 Jun
4 wk after
Purple-top vervain
Verbena bonariensis
20 Feb – 20 Mar
12 Apr
8-12 wk
15 May
7 Jun
1 wk after
Cardoon
Cynara cardunculus
Greenhouse
17 Feb – 17 Mar
23 Mar
8-12 wk
12 May
18 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
17 Jul
0 wk
3 May
7 Jul
1 wk before
Snapdragon
Antirrhinum majus
15 Feb – 15 Mar
12 May
8-12 wk
10 May
7 Jul
0 wk
15 May
27 Jun
1 wk after
Flossflower
Ageratum houstonianum
Greenhouse
11 – 25 Mar
21 Apr
8-10 wk
20 May
16 Jun
1 wk after
Sweet pea
Lathyrus odoratus
15 Mar – 5 Apr
2 Jun
5-8 wk
10 May
7 Jul
0 wk
Stock
Matthiola incana
15 – 29 Mar
5 Jun
6-8 wk
10 May
17 Jul
0 wk
20 May
7 Jul
1 wk after
Wormwood
Artemisia absinthium
15 – 29 Mar
6 May
6-8 wk
10 May
17 Jun
0 wk
20 May
7 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
22 May
8-10 wk
10 May
17 Jul
0 wk
15 May
7 Jul
1 wk after
Petunia
Petunia
Greenhouse
17 Feb – 17 Mar
11 Apr
8-12 wk
12 May
6 Jun
0 wk
Sweet Scabious
Scabiosa atropurpurea
20 Mar – 3 Apr
26 Apr
6-8 wk
15 May
7 Jun
1 wk after
15 Jun
5 wk after
Common zinnia
Zinnia elegans
Season too short
31 Mar – 14 Apr
4-6 wk
12 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
13 May
4-6 wk
12 May
10 Jun
0 wk
20 May
31 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
22 Apr
8-12 wk
10 May
17 Jun
0 wk
31 May
7 Jun
3 wk after
Yarrow
Achillea millefolium
15 – 29 Mar
6 Apr
6-8 wk
10 May
18 May
0 wk
20 May
1 wk after
Safflower
Carthamus tinctorius
10 May
17 Jun
0 wk
3 May
7 Jun
1 wk before
Iceland poppy
Papaver nudicaule
Season too short
15 – 29 Mar
26 May
6-8 wk
10 May
7 Jul
0 wk
1 Apr
27 Jun
6 wk before
Bishop's flower
Ammi majus
29 Mar – 12 Apr
9 Jun
4-6 wk
10 May
7 Jul
0 wk
20 May
27 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
5 Jun
3-4 wk
30 May
26 Jun
3 wk after
31 May
16 Jun
3 wk after
China aster
Callistephus chinensis
4 – 18 Apr
25 May
6-8 wk
30 May
6 Jul
3 wk after
15 Jun
26 Jun
5 wk after
Annual phlox
Phlox drummondii
Greenhouse
15 – 29 Mar
5 May
6-8 wk
10 May
16 Jun
0 wk
20 May
6 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
22 Apr
8-12 wk
10 May
17 Jun
0 wk
31 May
7 Jun
3 wk after
African marigold
Tagetes erecta
Greenhouse
17 – 31 Mar
5 May
6-8 wk
12 May
16 Jun
0 wk
Black-eyed Susan
Rudbeckia hirta
20 Mar – 3 Apr
15 May
6-8 wk
15 May
26 Jun
1 wk after
15 Jun
16 Jun
5 wk after
Wood sage
Salvia nemorosa
1 – 15 Mar
12 Apr
8-10 wk
10 May
7 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
17 Jul
0 wk
3 May
7 Jul
1 wk before
Painted tongue
Salpiglossis sinuata
21 Mar – 4 Apr
17 Apr
8-10 wk
30 May
12 Jun
3 wk after
Water forget-me-not
Myosotis scorpioides
15 – 29 Mar
6 May
6-8 wk
10 May
17 Jun
0 wk
20 May
7 Jun
1 wk after