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Method
Rel. frost
Last spring frost (0°C) 25 May Frost 9 of 10 years · 20 years of data
Frost-free season 90 days 25 May – 23 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)
6 – 20 Apr
9 Jun
5-7 wk
25 May
14 Jul
0 wk
26 May
4 Jul
0 wk
Broccoli
Brassica oleracea (Italica-gruppen)
13 – 27 Apr
21 Jun
4-6 wk
25 May
19 Jul
0 wk
26 May
9 Jul
0 wk
Chili pepper
Capsicum annuum
Season too short
8 Mar – 5 Apr
8-12 wk
31 May
1 wk after
Curly Kale
Brassica oleracea (Curly Kale-gruppen)
6 – 20 Apr
6 Jun
5-7 wk
25 May
11 Jul
0 wk
25 May
1 Jul
0 wk
Garden cucumber
Cucumis sativus
Season too short
3 – 10 May
3-4 wk
31 May
1 wk after
Florence Fennel
Foeniculum vulgare
Fleece
3 – 10 May
18 May
4-5 wk
7 Jun
15 Jun
2 wk after
19 Jun
4 wk after
Butter bean
Phaseolus lunatus
Season too short
5 – 12 Jun
3-4 wk
3 Jul
6 wk after
Onion
Allium cepa (Cepa-gruppen)
Greenhouse
2 – 30 Mar
18 Mar
8-12 wk
25 May
0 wk
25 May
0 wk
Onion (sets)
Allium cepa (Cepa-gruppen)
26 May
0 wk
26 May
0 wk
Maize
Zea mays
Season too short
27 Apr – 4 May
3-4 wk
25 May
0 wk
Swiss Chard
Beta vulgaris (Flavescens-gruppen)
29 Apr – 6 May
14 Jun
3-4 wk
27 May
5 Jul
0 wk
7 Jun
25 Jun
2 wk after
Carrot
Daucus carota subsp. sativus var. sativus
25 May
21 Jun
0 wk
25 May
11 Jun
0 wk
Palm Kale
Brassica oleracea (Palm Kale-gruppen)
6 – 20 Apr
6 Jun
5-7 wk
25 May
11 Jul
0 wk
25 May
1 Jul
0 wk
Potato
Solanum tuberosum
23 Apr – 7 May
4-6 wk
4 Jun
1 wk after
4 Jun
1 wk after
Ornamental Kale
Brassica oleracea (Ornamental-gruppen)
6 – 20 Apr
6 Jun
5-7 wk
25 May
11 Jul
0 wk
26 May
1 Jul
0 wk
Pumpkin
Cucurbita pepo
Season too short
3 – 10 May
3-4 wk
31 May
1 wk after
Beetroot
Beta vulgaris (Conditiva-gruppen)
Fleece
27 Apr – 4 May
12 May
3-4 wk
25 May
2 Jun
0 wk
31 May
1 wk after
Red Cabbage
Brassica oleracea (Red Cabbage-gruppen)
13 – 27 Apr
18 Jun
4-6 wk
25 May
16 Jul
0 wk
Lettuce
Lactuca sativa
27 Apr – 4 May
25 Jun
3-4 wk
25 May
16 Jul
0 wk
26 May
6 Jul
0 wk
Savoy Cabbage
Brassica oleracea (Savoy Cabbage-gruppen)
13 – 27 Apr
18 Jun
4-6 wk
25 May
16 Jul
0 wk
Shallot (bulbs)
Allium cepa (Aggregatum-gruppen)
27 Apr – 11 May
8 May
2-4 wk
25 May
0 wk
25 May
0 wk
Shallot (sets)
Allium cepa (Aggregatum-gruppen)
26 May
0 wk
26 May
0 wk
Spinach
Spinacia oleracea
27 Apr – 4 May
10 Jul
3-4 wk
25 May
31 Jul
0 wk
22 May
21 Jul
0 wk
Sweet potato
Ipomoea batatas
19 Jun – 3 Jul
4-6 wk
31 Jul
10 wk after
Garden tomato
Solanum lycopersicum
Season too short
30 Mar – 13 Apr
6-8 wk
25 May
0 wk
Tomatillo
Physalis ixocarpa
Common Bean
Phaseolus vulgaris
Season too short
27 Apr – 11 May
2-4 wk
25 May
0 wk
7 Jun
2 wk after
White Cabbage
Brassica oleracea (White Cabbage-gruppen)
13 – 27 Apr
18 Jun
4-6 wk
25 May
16 Jul
0 wk
Garden pea
Pisum sativum
27 Apr – 4 May
10 Jun
3-4 wk
25 May
1 Jul
0 wk
26 May
21 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
19 Apr – 3 May
4-6 wk
31 May
1 wk after
Lemon balm
Melissa officinalis
16 – 30 Mar
6 May
8-10 wk
25 May
1 Jul
0 wk
19 Jun
21 Jun
4 wk after
Dill
Anethum graveolens
26 May
5 Jul
0 wk
Wild chives
Allium schoenoprasum
30 Mar – 13 Apr
30 May
6-8 wk
25 May
11 Jul
0 wk
26 May
1 Jul
0 wk
Spearmint
Mentha spicata
2 – 30 Mar
14 May
8-12 wk
25 May
9 Jul
0 wk
19 Jun
29 Jun
4 wk after
Coriander
Coriandrum sativum
25 May
25 Jul
0 wk
7 Jun
15 Jul
2 wk after
Garden sage
Salvia officinalis
18 Mar – 1 Apr
1 May
8-10 wk
27 May
26 Jun
0 wk
Common thyme
Thymus vulgaris
16 – 30 Mar
6 May
8-10 wk
25 May
1 Jul
0 wk
Oregano
Origanum vulgare
30 Mar – 13 Apr
18 May
6-8 wk
25 May
29 Jun
0 wk
19 Jun
19 Jun
4 wk after
Parsley
Petroselinum crispum
30 Mar – 13 Apr
18 May
6-8 wk
25 May
29 Jun
0 wk
26 May
19 Jun
0 wk
Rosemary
Salvia rosmarinus
Fleece
16 Feb – 16 Mar
22 Mar
10-14 wk
25 May
31 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
3 – 10 May
3-4 wk
31 May
1 wk after
Cornflower
Centaurea cyanus
25 May
9 Jul
0 wk
26 May
29 Jun
0 wk
Statice
Limonium sinuatum
Season too short
16 – 30 Mar
8-10 wk
25 May
0 wk
Sweet William
Dianthus barbatus
30 Mar – 13 Apr
6-8 wk
25 May
0 wk
4 Jun
1 wk after
Snow-on-the-mountain
Euphorbia marginata
Season too short
30 Mar – 13 Apr
6-8 wk
25 May
0 wk
26 Jun
5 wk after
Pinnate dahlia
Dahlia × pinnata
Season too short
30 Mar – 13 Apr
5 Apr
6-8 wk
25 May
0 wk
Pinnate dahlia (tubers)
Dahlia × pinnata
Greenhouse
5 Apr – 3 May
19 Apr
4-8 wk
31 May
1 wk after
31 May
1 wk after
Foxglove
Digitalis purpurea
16 – 30 Mar
8-10 wk
25 May
0 wk
7 Jun
2 wk after
Busy lizzie
Impatiens walleriana
Season too short
8 Mar – 5 Apr
26 Mar
8-12 wk
31 May
1 wk after
Creeping zinnia
Sanvitalia procumbens
Greenhouse
30 Mar – 13 Apr
8 Apr
6-8 wk
25 May
0 wk
Hyacinth bean
Dolichos lablab
Season too short
26 Apr – 10 May
4-6 wk
7 Jun
2 wk after
Chinese lantern
Physalis alkekengi
18 Mar – 1 Apr
31 Mar
8-10 wk
27 May
0 wk
Love in a mist
Nigella damascena
25 May
16 Jun
0 wk
26 May
6 Jun
0 wk
Strawflower
Xerochrysum bracteatum
Season too short
30 Mar – 13 Apr
6-8 wk
25 May
0 wk
26 Jun
5 wk after
Purple-top vervain
Verbena bonariensis
4 Mar – 1 Apr
31 Mar
8-12 wk
27 May
0 wk
Cardoon
Cynara cardunculus
Season too short
2 – 30 Mar
7 Mar
8-12 wk
25 May
0 wk
Regal-foxtail
Ptilotus nobilis
Season too short
8 Mar – 5 Apr
8-12 wk
31 May
1 wk after
Globe amaranth
Gomphrena globosa
Season too short
5 – 19 Apr
6-8 wk
31 May
1 wk after
Corn poppy
Papaver rhoeas
25 May
1 Jul
0 wk
26 May
21 Jun
0 wk
Snapdragon
Antirrhinum majus
2 – 30 Mar
26 Apr
8-12 wk
25 May
21 Jun
0 wk
4 Jun
11 Jun
1 wk after
Flossflower
Ageratum houstonianum
Season too short
22 Mar – 5 Apr
25 Mar
8-10 wk
31 May
1 wk after
Sweet pea
Lathyrus odoratus
30 Mar – 20 Apr
25 May
5-8 wk
25 May
29 Jun
0 wk
Stock
Matthiola incana
30 Mar – 13 Apr
20 May
6-8 wk
25 May
1 Jul
0 wk
7 Jun
21 Jun
2 wk after
Wormwood
Artemisia absinthium
30 Mar – 13 Apr
30 Apr
6-8 wk
25 May
11 Jun
0 wk
7 Jun
2 wk after
Mexican sunflower
Tithonia rotundifolia
Season too short
19 Apr – 3 May
4-6 wk
31 May
1 wk after
Garden pansy
Viola × wittrockiana
16 – 30 Mar
16 May
8-10 wk
25 May
11 Jul
0 wk
4 Jun
1 Jul
1 wk after
Petunia
Petunia
Season too short
2 – 30 Mar
15 Mar
8-12 wk
25 May
0 wk
Sweet Scabious
Scabiosa atropurpurea
1 – 15 Apr
14 Apr
6-8 wk
27 May
0 wk
7 Jul
6 wk after
Common zinnia
Zinnia elegans
Season too short
13 – 27 Apr
4-6 wk
25 May
0 wk
Common morning glory
Ipomoea purpurea
Season too short
26 Apr – 10 May
3-5 wk
31 May
1 wk after
Garden cosmos
Cosmos bipinnatus
Season too short
13 – 27 Apr
19 Apr
4-6 wk
25 May
0 wk
7 Jun
2 wk after
Scarlet milkweed
Asclepias curassavica
Season too short
15 Mar – 12 Apr
8-12 wk
7 Jun
2 wk after
Bee balm
Monarda didyma
2 – 30 Mar
6 Apr
8-12 wk
25 May
1 Jun
0 wk
19 Jun
4 wk after
Yarrow
Achillea millefolium
30 Mar – 13 Apr
31 Mar
6-8 wk
25 May
0 wk
7 Jun
2 wk after
Safflower
Carthamus tinctorius
25 May
1 Jun
0 wk
26 May
0 wk
Iceland poppy
Papaver nudicaule
Season too short
30 Mar – 13 Apr
20 May
6-8 wk
25 May
1 Jul
0 wk
9 May
21 Jun
2 wk before
Bishop's flower
Ammi majus
13 – 27 Apr
24 May
4-6 wk
25 May
21 Jun
0 wk
7 Jun
11 Jun
2 wk after
Drumsticks
Pycnosorus globosus
Season too short
8 – 22 Mar
10-12 wk
31 May
1 wk after
Sunflower
Helianthus annuus
Fleece
3 – 10 May
30 May
3-4 wk
31 May
20 Jun
1 wk after
7 Jun
10 Jun
2 wk after
China aster
Callistephus chinensis
12 – 26 Apr
2 May
6-8 wk
7 Jun
13 Jun
2 wk after
7 Jul
6 wk after
Annual phlox
Phlox drummondii
Greenhouse
30 Mar – 13 Apr
8 Apr
6-8 wk
25 May
0 wk
7 Jun
2 wk after
Hollyhock
Alcea rosea
30 Mar – 13 Apr
6-8 wk
25 May
0 wk
7 Jun
2 wk after
Alpine delphinium
Delphinium elatum
2 – 30 Mar
6 Apr
8-12 wk
25 May
1 Jun
0 wk
19 Jun
4 wk after
African marigold
Tagetes erecta
Greenhouse
30 Mar – 13 Apr
8 Apr
6-8 wk
25 May
0 wk
Black-eyed Susan
Rudbeckia hirta
1 – 15 Apr
22 Apr
6-8 wk
27 May
3 Jun
0 wk
7 Jul
6 wk after
Wood sage
Salvia nemorosa
16 – 30 Mar
27 Mar
8-10 wk
25 May
0 wk
19 Jun
4 wk after
Black-eyed susan vine
Thunbergia alata
Season too short
22 Mar – 19 Apr
6-10 wk
31 May
1 wk after
California goldenpoppy
Eschscholzia californica
25 May
30 Jun
0 wk
26 May
20 Jun
0 wk
Painted tongue
Salpiglossis sinuata
Fleece
22 Mar – 5 Apr
20 Apr
8-10 wk
31 May
15 Jun
1 wk after
Water forget-me-not
Myosotis scorpioides
30 Mar – 13 Apr
30 Apr
6-8 wk
25 May
11 Jun
0 wk
7 Jun
2 wk after