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Method
Rel. frost
Last spring frost (0°C) 14 May Frost 9 of 10 years · 20 years of data
Frost-free season 105 days 14 May – 27 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)
26 Mar – 9 Apr
12 Jun
5-7 wk
14 May
17 Jul
0 wk
15 May
7 Jul
0 wk
Broccoli
Brassica oleracea (Italica-gruppen)
2 – 16 Apr
24 Jun
4-6 wk
14 May
22 Jul
0 wk
15 May
12 Jul
0 wk
Chili pepper
Capsicum annuum
Season too short
1 – 29 Mar
8-12 wk
24 May
1 wk after
Curly Kale
Brassica oleracea (Curly Kale-gruppen)
26 Mar – 9 Apr
7 Jun
5-7 wk
14 May
12 Jul
0 wk
14 May
2 Jul
0 wk
Garden cucumber
Cucumis sativus
Season too short
26 Apr – 3 May
3-4 wk
24 May
1 wk after
Florence Fennel
Foeniculum vulgare
Greenhouse
19 – 26 Apr
1 Jun
4-5 wk
24 May
29 Jun
1 wk after
27 May
19 Jun
2 wk after
Butter bean
Phaseolus lunatus
Season too short
27 May – 3 Jun
3-4 wk
24 Jun
6 wk after
Onion
Allium cepa (Cepa-gruppen)
Fleece
19 Feb – 19 Mar
8 Mar
8-12 wk
14 May
0 wk
20 May
1 wk after
Onion (sets)
Allium cepa (Cepa-gruppen)
Fleece
11 May
23 May
0 wk
11 May
13 May
0 wk
Maize
Zea mays
Season too short
18 – 25 Apr
3-4 wk
16 May
0 wk
Swiss Chard
Beta vulgaris (Flavescens-gruppen)
21 – 28 Apr
15 Jun
3-4 wk
19 May
6 Jul
1 wk after
27 May
26 Jun
2 wk after
Carrot
Daucus carota subsp. sativus var. sativus
14 May
29 Jun
0 wk
14 May
19 Jun
0 wk
Palm Kale
Brassica oleracea (Palm Kale-gruppen)
26 Mar – 9 Apr
7 Jun
5-7 wk
14 May
12 Jul
0 wk
14 May
2 Jul
0 wk
Potato
Solanum tuberosum
Fleece
3 – 17 Apr
27 Apr
4-6 wk
15 May
25 May
0 wk
15 May
15 May
0 wk
Ornamental Kale
Brassica oleracea (Ornamental-gruppen)
26 Mar – 9 Apr
14 Jun
5-7 wk
14 May
19 Jul
0 wk
15 May
9 Jul
0 wk
Pumpkin
Cucurbita pepo
Season too short
26 Apr – 3 May
3-4 wk
24 May
1 wk after
Beetroot
Beta vulgaris (Conditiva-gruppen)
Fleece
16 – 23 Apr
3 May
3-4 wk
14 May
24 May
0 wk
20 May
1 wk after
Red Cabbage
Brassica oleracea (Red Cabbage-gruppen)
2 – 16 Apr
19 Jun
4-6 wk
14 May
17 Jul
0 wk
Lettuce
Lactuca sativa
16 – 23 Apr
3 Jul
3-4 wk
14 May
24 Jul
0 wk
15 May
14 Jul
0 wk
Savoy Cabbage
Brassica oleracea (Savoy Cabbage-gruppen)
2 – 16 Apr
19 Jun
4-6 wk
14 May
17 Jul
0 wk
Shallot (bulbs)
Allium cepa (Aggregatum-gruppen)
Fleece
10 – 24 Apr
10 May
2-4 wk
8 May
24 May
1 wk before
8 May
14 May
1 wk before
Shallot (sets)
Allium cepa (Aggregatum-gruppen)
Fleece
11 May
23 May
0 wk
11 May
13 May
0 wk
Spinach
Spinacia oleracea
16 – 23 Apr
21 Jul
3-4 wk
14 May
11 Aug
0 wk
11 May
1 Aug
0 wk
Sweet potato
Ipomoea batatas
8 – 22 Jun
4-6 wk
20 Jul
10 wk after
Garden tomato
Solanum lycopersicum
Season too short
21 Mar – 4 Apr
6-8 wk
16 May
0 wk
Tomatillo
Physalis ixocarpa
Common Bean
Phaseolus vulgaris
Season too short
18 Apr – 2 May
2-4 wk
16 May
0 wk
27 May
2 wk after
White Cabbage
Brassica oleracea (White Cabbage-gruppen)
2 – 16 Apr
19 Jun
4-6 wk
14 May
17 Jul
0 wk
Garden pea
Pisum sativum
16 – 23 Apr
18 Jun
3-4 wk
14 May
9 Jul
0 wk
15 May
29 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
12 – 26 Apr
4-6 wk
24 May
1 wk after
Lemon balm
Melissa officinalis
5 – 19 Mar
14 May
8-10 wk
14 May
9 Jul
0 wk
8 Jun
29 Jun
4 wk after
Dill
Anethum graveolens
15 May
6 Jul
0 wk
Wild chives
Allium schoenoprasum
19 Mar – 2 Apr
31 May
6-8 wk
14 May
12 Jul
0 wk
15 May
2 Jul
0 wk
Spearmint
Mentha spicata
19 Feb – 19 Mar
17 May
8-12 wk
14 May
12 Jul
0 wk
8 Jun
2 Jul
4 wk after
Coriander
Coriandrum sativum
14 May
26 Jul
0 wk
27 May
16 Jul
2 wk after
Garden sage
Salvia officinalis
10 – 24 Mar
2 May
8-10 wk
19 May
27 Jun
1 wk after
Common thyme
Thymus vulgaris
5 – 19 Mar
7 May
8-10 wk
14 May
2 Jul
0 wk
Oregano
Origanum vulgare
19 Mar – 2 Apr
21 May
6-8 wk
14 May
2 Jul
0 wk
8 Jun
22 Jun
4 wk after
Parsley
Petroselinum crispum
19 Mar – 2 Apr
21 May
6-8 wk
14 May
2 Jul
0 wk
15 May
22 Jun
0 wk
Rosemary
Salvia rosmarinus
Fleece
5 Feb – 5 Mar
26 Mar
10-14 wk
14 May
4 Jun
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
26 Apr – 3 May
3-4 wk
24 May
1 wk after
Cornflower
Centaurea cyanus
14 May
12 Jul
0 wk
15 May
2 Jul
0 wk
Statice
Limonium sinuatum
Season too short
7 – 21 Mar
8-10 wk
16 May
0 wk
Sweet William
Dianthus barbatus
19 Mar – 2 Apr
6-8 wk
14 May
0 wk
24 May
1 wk after
Snow-on-the-mountain
Euphorbia marginata
Season too short
21 Mar – 4 Apr
6-8 wk
16 May
0 wk
15 Jun
5 wk after
Pinnate dahlia
Dahlia × pinnata
Greenhouse
19 Mar – 2 Apr
9 Apr
6-8 wk
14 May
21 May
0 wk
Pinnate dahlia (tubers)
Dahlia × pinnata
Greenhouse
25 Mar – 22 Apr
23 Apr
4-8 wk
20 May
21 May
1 wk after
20 May
1 wk after
Foxglove
Digitalis purpurea
5 – 19 Mar
8-10 wk
14 May
0 wk
27 May
2 wk after
Busy lizzie
Impatiens walleriana
Season too short
1 – 29 Mar
28 Mar
8-12 wk
24 May
1 wk after
Creeping zinnia
Sanvitalia procumbens
Season too short
21 Mar – 4 Apr
6-8 wk
16 May
0 wk
Hyacinth bean
Dolichos lablab
Season too short
22 Apr – 6 May
4-6 wk
3 Jun
3 wk after
Chinese lantern
Physalis alkekengi
Fleece
5 – 19 Mar
14 Apr
8-10 wk
14 May
9 Jun
0 wk
Love in a mist
Nigella damascena
14 May
24 Jun
0 wk
15 May
14 Jun
0 wk
Strawflower
Xerochrysum bracteatum
Season too short
21 Mar – 4 Apr
6-8 wk
16 May
0 wk
15 Jun
5 wk after
Purple-top vervain
Verbena bonariensis
Fleece
19 Feb – 19 Mar
14 Apr
8-12 wk
14 May
9 Jun
0 wk
Cardoon
Cynara cardunculus
Season too short
21 Feb – 21 Mar
18 Mar
8-12 wk
16 May
0 wk
Regal-foxtail
Ptilotus nobilis
Season too short
1 – 29 Mar
8-12 wk
24 May
1 wk after
Globe amaranth
Gomphrena globosa
Season too short
29 Mar – 12 Apr
6-8 wk
24 May
1 wk after
Corn poppy
Papaver rhoeas
14 May
9 Jul
0 wk
15 May
29 Jun
0 wk
Snapdragon
Antirrhinum majus
19 Feb – 19 Mar
4 May
8-12 wk
14 May
29 Jun
0 wk
24 May
19 Jun
1 wk after
Flossflower
Ageratum houstonianum
Season too short
15 – 29 Mar
8-10 wk
24 May
1 wk after
Sweet pea
Lathyrus odoratus
19 Mar – 9 Apr
28 May
5-8 wk
14 May
2 Jul
0 wk
Stock
Matthiola incana
19 Mar – 2 Apr
28 May
6-8 wk
14 May
9 Jul
0 wk
27 May
29 Jun
2 wk after
Wormwood
Artemisia absinthium
19 Mar – 2 Apr
1 May
6-8 wk
14 May
12 Jun
0 wk
27 May
2 Jun
2 wk after
Mexican sunflower
Tithonia rotundifolia
Season too short
12 – 26 Apr
4-6 wk
24 May
1 wk after
Garden pansy
Viola × wittrockiana
5 – 19 Mar
17 May
8-10 wk
14 May
12 Jul
0 wk
24 May
2 Jul
1 wk after
Petunia
Petunia
Season too short
21 Feb – 21 Mar
8-12 wk
16 May
0 wk
Sweet Scabious
Scabiosa atropurpurea
Fleece
19 Mar – 2 Apr
28 Apr
6-8 wk
14 May
9 Jun
0 wk
8 Jun
4 wk after
Common zinnia
Zinnia elegans
Season too short
4 – 18 Apr
4-6 wk
16 May
0 wk
Common morning glory
Ipomoea purpurea
Season too short
19 Apr – 3 May
3-5 wk
24 May
1 wk after
Garden cosmos
Cosmos bipinnatus
Season too short
4 – 18 Apr
23 Apr
4-6 wk
16 May
21 May
0 wk
27 May
2 wk after
Scarlet milkweed
Asclepias curassavica
Season too short
11 Mar – 8 Apr
8-12 wk
3 Jun
3 wk after
Bee balm
Monarda didyma
19 Feb – 19 Mar
14 Apr
8-12 wk
14 May
9 Jun
0 wk
8 Jun
4 wk after
Yarrow
Achillea millefolium
19 Mar – 2 Apr
1 Apr
6-8 wk
14 May
0 wk
27 May
2 wk after
Safflower
Carthamus tinctorius
14 May
12 Jun
0 wk
15 May
2 Jun
0 wk
Iceland poppy
Papaver nudicaule
Season too short
19 Mar – 2 Apr
21 May
6-8 wk
14 May
2 Jul
0 wk
28 Apr
22 Jun
2 wk before
Bishop's flower
Ammi majus
2 – 16 Apr
1 Jun
4-6 wk
14 May
29 Jun
0 wk
27 May
19 Jun
2 wk after
Drumsticks
Pycnosorus globosus
Season too short
1 – 15 Mar
10-12 wk
24 May
1 wk after
Sunflower
Helianthus annuus
Fleece
26 Apr – 3 May
3 Jun
3-4 wk
24 May
24 Jun
1 wk after
27 May
14 Jun
2 wk after
China aster
Callistephus chinensis
Fleece
29 Mar – 12 Apr
23 May
6-8 wk
24 May
4 Jul
1 wk after
8 Jun
24 Jun
4 wk after
Annual phlox
Phlox drummondii
Season too short
19 Mar – 2 Apr
6-8 wk
14 May
0 wk
27 May
2 wk after
Hollyhock
Alcea rosea
19 Mar – 2 Apr
6-8 wk
14 May
0 wk
27 May
2 wk after
Alpine delphinium
Delphinium elatum
19 Feb – 19 Mar
14 Apr
8-12 wk
14 May
9 Jun
0 wk
8 Jun
4 wk after
African marigold
Tagetes erecta
Season too short
21 Mar – 4 Apr
6-8 wk
16 May
0 wk
Black-eyed Susan
Rudbeckia hirta
24 Mar – 7 Apr
1 May
6-8 wk
19 May
12 Jun
1 wk after
26 Jun
6 wk after
Wood sage
Salvia nemorosa
5 – 19 Mar
4 Apr
8-10 wk
14 May
30 May
0 wk
8 Jun
4 wk after
Black-eyed susan vine
Thunbergia alata
Season too short
15 Mar – 12 Apr
6-10 wk
24 May
1 wk after
California goldenpoppy
Eschscholzia californica
14 May
4 Jul
0 wk
15 May
24 Jun
0 wk
Painted tongue
Salpiglossis sinuata
Fleece
15 – 29 Mar
21 Apr
8-10 wk
24 May
16 Jun
1 wk after
Water forget-me-not
Myosotis scorpioides
19 Mar – 2 Apr
1 May
6-8 wk
14 May
12 Jun
0 wk
27 May
2 Jun
2 wk after