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Method
Rel. frost
Last spring frost (0°C) 24 May Frost 9 of 10 years · 20 years of data
Frost-free season 42 days 24 May – 5 Jul
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)
5 – 19 Apr
8 Jun
5-7 wk
24 May
13 Jul
0 wk
28 May
3 Jul
1 wk after
Broccoli
Brassica oleracea (Italica-gruppen)
12 – 26 Apr
20 Jun
4-6 wk
24 May
18 Jul
0 wk
28 May
8 Jul
1 wk after
Chili pepper
Capsicum annuum
Season too short
7 Mar – 4 Apr
8-12 wk
30 May
1 wk after
Curly Kale
Brassica oleracea (Curly Kale-gruppen)
5 – 19 Apr
9 Jun
5-7 wk
24 May
14 Jul
0 wk
24 May
4 Jul
0 wk
Garden cucumber
Cucumis sativus
Season too short
2 – 9 May
3-4 wk
30 May
1 wk after
Florence Fennel
Foeniculum vulgare
Fleece
2 – 9 May
11 May
4-5 wk
6 Jun
8 Jun
2 wk after
28 Jun
5 wk after
Butter bean
Phaseolus lunatus
Season too short
4 – 11 Jun
3-4 wk
2 Jul
6 wk after
Onion
Allium cepa (Cepa-gruppen)
Greenhouse
1 – 29 Mar
16 Mar
8-12 wk
24 May
0 wk
24 May
0 wk
Onion (sets)
Allium cepa (Cepa-gruppen)
28 May
1 wk after
28 May
1 wk after
Maize
Zea mays
Season too short
26 Apr – 3 May
3-4 wk
24 May
0 wk
Swiss Chard
Beta vulgaris (Flavescens-gruppen)
28 Apr – 5 May
7 Jun
3-4 wk
26 May
28 Jun
0 wk
14 Jun
18 Jun
3 wk after
Carrot
Daucus carota subsp. sativus var. sativus
24 May
9 Jun
0 wk
24 May
30 May
0 wk
Palm Kale
Brassica oleracea (Palm Kale-gruppen)
5 – 19 Apr
9 Jun
5-7 wk
24 May
14 Jul
0 wk
24 May
4 Jul
0 wk
Potato
Solanum tuberosum
28 Apr – 12 May
4-6 wk
9 Jun
2 wk after
9 Jun
2 wk after
Ornamental Kale
Brassica oleracea (Ornamental-gruppen)
5 – 19 Apr
25 May
5-7 wk
24 May
29 Jun
0 wk
28 May
19 Jun
1 wk after
Pumpkin
Cucurbita pepo
Season too short
2 – 9 May
3-4 wk
30 May
1 wk after
Beetroot
Beta vulgaris (Conditiva-gruppen)
Fleece
26 Apr – 3 May
4 May
3-4 wk
24 May
25 May
0 wk
3 Jun
1 wk after
Red Cabbage
Brassica oleracea (Red Cabbage-gruppen)
12 – 26 Apr
21 Jun
4-6 wk
24 May
19 Jul
0 wk
Lettuce
Lactuca sativa
26 Apr – 3 May
13 Jun
3-4 wk
24 May
4 Jul
0 wk
28 May
24 Jun
1 wk after
Savoy Cabbage
Brassica oleracea (Savoy Cabbage-gruppen)
12 – 26 Apr
21 Jun
4-6 wk
24 May
19 Jul
0 wk
Shallot (bulbs)
Allium cepa (Aggregatum-gruppen)
26 Apr – 10 May
6 May
2-4 wk
24 May
0 wk
24 May
0 wk
Shallot (sets)
Allium cepa (Aggregatum-gruppen)
28 May
1 wk after
28 May
1 wk after
Spinach
Spinacia oleracea
26 Apr – 3 May
7 Jul
3-4 wk
24 May
28 Jul
0 wk
20 May
18 Jul
1 wk before
Sweet potato
Ipomoea batatas
25 Jun – 9 Jul
4-6 wk
6 Aug
11 wk after
Garden tomato
Solanum lycopersicum
Season too short
29 Mar – 12 Apr
6-8 wk
24 May
0 wk
Tomatillo
Physalis ixocarpa
Common Bean
Phaseolus vulgaris
Season too short
26 Apr – 10 May
2-4 wk
24 May
0 wk
14 Jun
3 wk after
White Cabbage
Brassica oleracea (White Cabbage-gruppen)
12 – 26 Apr
21 Jun
4-6 wk
24 May
19 Jul
0 wk
Garden pea
Pisum sativum
26 Apr – 3 May
29 May
3-4 wk
24 May
19 Jun
0 wk
28 May
9 Jun
1 wk after

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