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Rel. frost
Last spring frost (0°C) 24 May Frost 9 of 10 years · 20 years of data
Frost-free season 89 days 24 May – 21 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)
5 – 19 Apr
15 Jun
5-7 wk
24 May
20 Jul
0 wk
28 May
10 Jul
1 wk after
Broccoli
Brassica oleracea (Italica-gruppen)
12 – 26 Apr
27 Jun
4-6 wk
24 May
25 Jul
0 wk
28 May
15 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
10 Jun
5-7 wk
24 May
15 Jul
0 wk
24 May
5 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
17 May
4-5 wk
6 Jun
14 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
24 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
13 Jun
3-4 wk
26 May
4 Jul
0 wk
14 Jun
24 Jun
3 wk after
Carrot
Daucus carota subsp. sativus var. sativus
24 May
21 Jun
0 wk
24 May
11 Jun
0 wk
Palm Kale
Brassica oleracea (Palm Kale-gruppen)
5 – 19 Apr
10 Jun
5-7 wk
24 May
15 Jul
0 wk
24 May
5 Jul
0 wk
Potato
Solanum tuberosum
28 Apr – 12 May
7 May
4-6 wk
9 Jun
2 wk after
9 Jun
2 wk after
Ornamental Kale
Brassica oleracea (Ornamental-gruppen)
5 – 19 Apr
6 Jun
5-7 wk
24 May
11 Jul
0 wk
28 May
1 Jul
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)
28 Apr – 5 May
10 May
3-4 wk
26 May
31 May
0 wk
14 Jun
3 wk after
Red Cabbage
Brassica oleracea (Red Cabbage-gruppen)
12 – 26 Apr
22 Jun
4-6 wk
24 May
20 Jul
0 wk
Lettuce
Lactuca sativa
26 Apr – 3 May
25 Jun
3-4 wk
24 May
16 Jul
0 wk
28 May
6 Jul
1 wk after
Savoy Cabbage
Brassica oleracea (Savoy Cabbage-gruppen)
12 – 26 Apr
22 Jun
4-6 wk
24 May
20 Jul
0 wk
Shallot (bulbs)
Allium cepa (Aggregatum-gruppen)
26 Apr – 10 May
13 May
2-4 wk
24 May
27 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
18 Jul
3-4 wk
24 May
8 Aug
0 wk
20 May
29 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
22 Jun
4-6 wk
24 May
20 Jul
0 wk
Garden pea
Pisum sativum
26 Apr – 3 May
10 Jun
3-4 wk
24 May
1 Jul
0 wk
28 May
21 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
6 May
8-10 wk
24 May
1 Jul
0 wk
28 Jun
5 wk after
Dill
Anethum graveolens
28 May
4 Jul
1 wk after
Wild chives
Allium schoenoprasum
29 Mar – 12 Apr
3 Jun
6-8 wk
24 May
15 Jul
0 wk
28 May
5 Jul
1 wk after
Spearmint
Mentha spicata
1 – 29 Mar
20 May
8-12 wk
24 May
15 Jul
0 wk
28 Jun
5 Jul
5 wk after
Coriander
Coriandrum sativum
24 May
24 Jul
0 wk
14 Jun
14 Jul
3 wk after
Garden sage
Salvia officinalis
17 – 31 Mar
5 May
8-10 wk
26 May
30 Jun
0 wk
Common thyme
Thymus vulgaris
15 – 29 Mar
10 May
8-10 wk
24 May
5 Jul
0 wk
Oregano
Origanum vulgare
29 Mar – 12 Apr
24 May
6-8 wk
24 May
5 Jul
0 wk
28 Jun
5 wk after
Parsley
Petroselinum crispum
29 Mar – 12 Apr
24 May
6-8 wk
24 May
5 Jul
0 wk
28 May
25 Jun
1 wk after
Rosemary
Salvia rosmarinus
Fleece
15 Feb – 15 Mar
23 Mar
10-14 wk
24 May
1 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
2 – 9 May
3-4 wk
30 May
1 wk after
Cornflower
Centaurea cyanus
24 May
15 Jul
0 wk
28 May
5 Jul
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
Greenhouse
29 Mar – 12 Apr
3 Apr
6-8 wk
24 May
0 wk
Pinnate dahlia (tubers)
Dahlia × pinnata
Greenhouse
8 Apr – 6 May
17 Apr
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
17 – 31 Mar
30 Mar
8-10 wk
26 May
0 wk
Love in a mist
Nigella damascena
24 May
16 Jun
0 wk
28 May
6 Jun
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
3 – 31 Mar
30 Mar
8-12 wk
26 May
0 wk
Cardoon
Cynara cardunculus
Season too short
1 – 29 Mar
15 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
1 Jul
0 wk
28 May
21 Jun
1 wk after
Snapdragon
Antirrhinum majus
1 – 29 Mar
26 Apr
8-12 wk
24 May
21 Jun
0 wk
9 Jun
11 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
31 May
5-8 wk
24 May
5 Jul
0 wk
Stock
Matthiola incana
29 Mar – 12 Apr
20 May
6-8 wk
24 May
1 Jul
0 wk
14 Jun
21 Jun
3 wk after
Wormwood
Artemisia absinthium
29 Mar – 12 Apr
4 May
6-8 wk
24 May
15 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
20 May
8-10 wk
24 May
15 Jul
0 wk
9 Jun
5 Jul
2 wk after
Petunia
Petunia
Season too short
1 – 29 Mar
8-12 wk
24 May
0 wk
Sweet Scabious
Scabiosa atropurpurea
31 Mar – 14 Apr
13 Apr
6-8 wk
26 May
0 wk
12 Jul
7 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
Greenhouse
12 – 26 Apr
17 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
6 Apr
8-12 wk
24 May
1 Jun
0 wk
28 Jun
5 wk after
Yarrow
Achillea millefolium
29 Mar – 12 Apr
4 Apr
6-8 wk
24 May
0 wk
14 Jun
3 wk after
Safflower
Carthamus tinctorius
24 May
9 Jun
0 wk
28 May
30 May
1 wk after
Iceland poppy
Papaver nudicaule
Season too short
29 Mar – 12 Apr
24 May
6-8 wk
24 May
5 Jul
0 wk
6 May
25 Jun
3 wk before
Bishop's flower
Ammi majus
12 – 26 Apr
24 May
4-6 wk
24 May
21 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
31 May
3-4 wk
30 May
21 Jun
1 wk after
14 Jun
3 wk after
China aster
Callistephus chinensis
11 – 25 Apr
25 Apr
6-8 wk
6 Jun
6 Jun
2 wk after
12 Jul
7 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
6 Apr
8-12 wk
24 May
1 Jun
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
31 Mar – 14 Apr
15 Apr
6-8 wk
26 May
27 May
0 wk
12 Jul
7 wk after
Wood sage
Salvia nemorosa
15 – 29 Mar
27 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
1 Jul
0 wk
28 May
21 Jun
1 wk after
Painted tongue
Salpiglossis sinuata
Fleece
21 Mar – 4 Apr
19 Apr
8-10 wk
30 May
14 Jun
1 wk after
Water forget-me-not
Myosotis scorpioides
29 Mar – 12 Apr
4 May
6-8 wk
24 May
15 Jun
0 wk
14 Jun
3 wk after