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Method
Rel. frost
Last spring frost (0°C) 12 May Frost 9 of 10 years · 20 years of data
Frost-free season 94 days 12 May – 14 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)
24 Mar – 7 Apr
10 Jun
5-7 wk
12 May
15 Jul
0 wk
13 May
5 Jul
0 wk
Broccoli
Brassica oleracea (Italica-gruppen)
31 Mar – 14 Apr
22 Jun
4-6 wk
12 May
20 Jul
0 wk
13 May
10 Jul
0 wk
Chili pepper
Capsicum annuum
Season too short
27 Feb – 27 Mar
8-12 wk
22 May
1 wk after
Curly Kale
Brassica oleracea (Curly Kale-gruppen)
24 Mar – 7 Apr
6 Jun
5-7 wk
12 May
11 Jul
0 wk
12 May
1 Jul
0 wk
Garden cucumber
Cucumis sativus
Season too short
24 Apr – 1 May
3-4 wk
22 May
1 wk after
Florence Fennel
Foeniculum vulgare
Fleece
27 Apr – 4 May
3 May
4-5 wk
1 Jun
3 wk after
6 Jun
4 wk after
Butter bean
Phaseolus lunatus
Season too short
25 May – 1 Jun
3-4 wk
22 Jun
6 wk after
Onion
Allium cepa (Cepa-gruppen)
17 Feb – 17 Mar
5 Mar
8-12 wk
12 May
0 wk
25 May
2 wk after
Onion (sets)
Allium cepa (Cepa-gruppen)
13 May
20 May
0 wk
13 May
0 wk
Maize
Zea mays
Season too short
16 – 23 Apr
3-4 wk
14 May
0 wk
Swiss Chard
Beta vulgaris (Flavescens-gruppen)
19 – 26 Apr
30 May
3-4 wk
17 May
20 Jun
1 wk after
25 May
10 Jun
2 wk after
Carrot
Daucus carota subsp. sativus var. sativus
12 May
24 Jun
0 wk
12 May
14 Jun
0 wk
Palm Kale
Brassica oleracea (Palm Kale-gruppen)
24 Mar – 7 Apr
6 Jun
5-7 wk
12 May
11 Jul
0 wk
12 May
1 Jul
0 wk
Potato
Solanum tuberosum
10 – 24 Apr
27 Apr
4-6 wk
22 May
25 May
1 wk after
22 May
1 wk after
Ornamental Kale
Brassica oleracea (Ornamental-gruppen)
24 Mar – 7 Apr
9 Jun
5-7 wk
12 May
14 Jul
0 wk
13 May
4 Jul
0 wk
Pumpkin
Cucurbita pepo
Season too short
24 Apr – 1 May
3-4 wk
22 May
1 wk after
Beetroot
Beta vulgaris (Conditiva-gruppen)
19 – 26 Apr
10 May
3-4 wk
17 May
31 May
1 wk after
25 May
2 wk after
Red Cabbage
Brassica oleracea (Red Cabbage-gruppen)
31 Mar – 14 Apr
18 Jun
4-6 wk
12 May
16 Jul
0 wk
Lettuce
Lactuca sativa
14 – 21 Apr
28 Jun
3-4 wk
12 May
19 Jul
0 wk
13 May
9 Jul
0 wk
Savoy Cabbage
Brassica oleracea (Savoy Cabbage-gruppen)
31 Mar – 14 Apr
18 Jun
4-6 wk
12 May
16 Jul
0 wk
Shallot (bulbs)
Allium cepa (Aggregatum-gruppen)
14 – 28 Apr
11 May
2-4 wk
12 May
25 May
0 wk
12 May
15 May
0 wk
Shallot (sets)
Allium cepa (Aggregatum-gruppen)
13 May
20 May
0 wk
13 May
0 wk
Spinach
Spinacia oleracea
14 – 21 Apr
17 Jul
3-4 wk
12 May
7 Aug
0 wk
9 May
28 Jul
0 wk
Sweet potato
Ipomoea batatas
6 – 20 Jun
4-6 wk
18 Jul
10 wk after
Garden tomato
Solanum lycopersicum
Season too short
19 Mar – 2 Apr
6-8 wk
14 May
0 wk
Tomatillo
Physalis ixocarpa
Common Bean
Phaseolus vulgaris
Season too short
16 – 30 Apr
2-4 wk
14 May
0 wk
25 May
2 wk after
White Cabbage
Brassica oleracea (White Cabbage-gruppen)
31 Mar – 14 Apr
18 Jun
4-6 wk
12 May
16 Jul
0 wk
Garden pea
Pisum sativum
14 – 21 Apr
13 Jun
3-4 wk
12 May
4 Jul
0 wk
13 May
24 Jun
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
10 – 24 Apr
4-6 wk
22 May
1 wk after
Lemon balm
Melissa officinalis
3 – 17 Mar
9 May
8-10 wk
12 May
4 Jul
0 wk
6 Jun
24 Jun
4 wk after
Dill
Anethum graveolens
13 May
20 Jun
0 wk
Wild chives
Allium schoenoprasum
17 – 31 Mar
30 May
6-8 wk
12 May
11 Jul
0 wk
13 May
1 Jul
0 wk
Spearmint
Mentha spicata
17 Feb – 17 Mar
15 May
8-12 wk
12 May
10 Jul
0 wk
6 Jun
30 Jun
4 wk after
Coriander
Coriandrum sativum
12 May
10 Jul
0 wk
25 May
30 Jun
2 wk after
Garden sage
Salvia officinalis
8 – 22 Mar
1 May
8-10 wk
17 May
26 Jun
1 wk after
Common thyme
Thymus vulgaris
3 – 17 Mar
6 May
8-10 wk
12 May
1 Jul
0 wk
Oregano
Origanum vulgare
17 – 31 Mar
19 May
6-8 wk
12 May
30 Jun
0 wk
6 Jun
20 Jun
4 wk after
Parsley
Petroselinum crispum
17 – 31 Mar
19 May
6-8 wk
12 May
30 Jun
0 wk
13 May
20 Jun
0 wk
Rosemary
Salvia rosmarinus
Fleece
3 Feb – 3 Mar
6 Mar
10-14 wk
12 May
15 May
0 wk

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