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Rel. frost
Last spring frost (0°C) 21 May Frost 9 of 10 years · 20 years of data
Frost-free season 53 days 21 May – 13 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)
2 – 16 Apr
15 Jun
5-7 wk
21 May
20 Jul
0 wk
25 May
10 Jul
1 wk after
Broccoli
Brassica oleracea (Italica-gruppen)
9 – 23 Apr
27 Jun
4-6 wk
21 May
25 Jul
0 wk
25 May
15 Jul
1 wk after
Chili pepper
Capsicum annuum
Season too short
4 Mar – 1 Apr
8-12 wk
27 May
1 wk after
Curly Kale
Brassica oleracea (Curly Kale-gruppen)
2 – 16 Apr
10 Jun
5-7 wk
21 May
15 Jul
0 wk
21 May
5 Jul
0 wk
Garden cucumber
Cucumis sativus
Season too short
29 Apr – 6 May
3-4 wk
27 May
1 wk after
Florence Fennel
Foeniculum vulgare
Greenhouse
22 – 29 Apr
26 May
4-5 wk
27 May
23 Jun
1 wk after
11 Jun
13 Jun
3 wk after
Butter bean
Phaseolus lunatus
Season too short
1 – 8 Jun
3-4 wk
29 Jun
6 wk after
Onion
Allium cepa (Cepa-gruppen)
Fleece
26 Feb – 26 Mar
16 Mar
8-12 wk
21 May
0 wk
31 May
1 wk after
Onion (sets)
Allium cepa (Cepa-gruppen)
25 May
25 May
1 wk after
25 May
1 wk after
Maize
Zea mays
Season too short
23 – 30 Apr
3-4 wk
21 May
0 wk
Swiss Chard
Beta vulgaris (Flavescens-gruppen)
25 Apr – 2 May
11 Jun
3-4 wk
23 May
2 Jul
0 wk
11 Jun
22 Jun
3 wk after
Carrot
Daucus carota subsp. sativus var. sativus
21 May
23 Jun
0 wk
21 May
13 Jun
0 wk
Palm Kale
Brassica oleracea (Palm Kale-gruppen)
2 – 16 Apr
10 Jun
5-7 wk
21 May
15 Jul
0 wk
21 May
5 Jul
0 wk
Potato
Solanum tuberosum
25 Apr – 9 May
7 May
4-6 wk
6 Jun
2 wk after
6 Jun
2 wk after
Ornamental Kale
Brassica oleracea (Ornamental-gruppen)
2 – 16 Apr
8 Jun
5-7 wk
21 May
13 Jul
0 wk
25 May
3 Jul
1 wk after
Pumpkin
Cucurbita pepo
Season too short
29 Apr – 6 May
3-4 wk
27 May
1 wk after
Beetroot
Beta vulgaris (Conditiva-gruppen)
25 Apr – 2 May
10 May
3-4 wk
23 May
31 May
0 wk
11 Jun
3 wk after
Red Cabbage
Brassica oleracea (Red Cabbage-gruppen)
9 – 23 Apr
22 Jun
4-6 wk
21 May
20 Jul
0 wk
Lettuce
Lactuca sativa
23 – 30 Apr
27 Jun
3-4 wk
21 May
18 Jul
0 wk
25 May
8 Jul
1 wk after
Savoy Cabbage
Brassica oleracea (Savoy Cabbage-gruppen)
9 – 23 Apr
22 Jun
4-6 wk
21 May
20 Jul
0 wk
Shallot (bulbs)
Allium cepa (Aggregatum-gruppen)
23 Apr – 7 May
13 May
2-4 wk
21 May
27 May
0 wk
21 May
0 wk
Shallot (sets)
Allium cepa (Aggregatum-gruppen)
25 May
25 May
1 wk after
25 May
1 wk after
Spinach
Spinacia oleracea
23 – 30 Apr
19 Jul
3-4 wk
21 May
9 Aug
0 wk
17 May
30 Jul
1 wk before
Sweet potato
Ipomoea batatas
22 Jun – 6 Jul
4-6 wk
3 Aug
11 wk after
Garden tomato
Solanum lycopersicum
Season too short
26 Mar – 9 Apr
6-8 wk
21 May
0 wk
Tomatillo
Physalis ixocarpa
Common Bean
Phaseolus vulgaris
Season too short
23 Apr – 7 May
2-4 wk
21 May
0 wk
11 Jun
3 wk after
White Cabbage
Brassica oleracea (White Cabbage-gruppen)
9 – 23 Apr
22 Jun
4-6 wk
21 May
20 Jul
0 wk
Garden pea
Pisum sativum
23 – 30 Apr
12 Jun
3-4 wk
21 May
3 Jul
0 wk
25 May
23 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
15 – 29 Apr
4-6 wk
27 May
1 wk after
Lemon balm
Melissa officinalis
12 – 26 Mar
8 May
8-10 wk
21 May
3 Jul
0 wk
25 Jun
5 wk after
Dill
Anethum graveolens
25 May
2 Jul
1 wk after
Wild chives
Allium schoenoprasum
26 Mar – 9 Apr
3 Jun
6-8 wk
21 May
15 Jul
0 wk
25 May
5 Jul
1 wk after
Spearmint
Mentha spicata
26 Feb – 26 Mar
20 May
8-12 wk
21 May
15 Jul
0 wk
25 Jun
5 Jul
5 wk after
Coriander
Coriandrum sativum
21 May
22 Jul
0 wk
11 Jun
12 Jul
3 wk after
Garden sage
Salvia officinalis
14 – 28 Mar
5 May
8-10 wk
23 May
30 Jun
0 wk
Common thyme
Thymus vulgaris
12 – 26 Mar
10 May
8-10 wk
21 May
5 Jul
0 wk
Oregano
Origanum vulgare
26 Mar – 9 Apr
24 May
6-8 wk
21 May
5 Jul
0 wk
25 Jun
25 Jun
5 wk after
Parsley
Petroselinum crispum
26 Mar – 9 Apr
24 May
6-8 wk
21 May
5 Jul
0 wk
25 May
25 Jun
1 wk after
Rosemary
Salvia rosmarinus
Fleece
12 Feb – 12 Mar
18 Mar
10-14 wk
21 May
27 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
29 Apr – 6 May
3-4 wk
27 May
1 wk after
Cornflower
Centaurea cyanus
21 May
15 Jul
0 wk
25 May
5 Jul
1 wk after
Statice
Limonium sinuatum
Season too short
12 – 26 Mar
8-10 wk
21 May
0 wk
Sweet William
Dianthus barbatus
26 Mar – 9 Apr
6-8 wk
21 May
0 wk
6 Jun
2 wk after
Snow-on-the-mountain
Euphorbia marginata
Season too short
26 Mar – 9 Apr
6-8 wk
21 May
0 wk
1 Jul
6 wk after
Pinnate dahlia
Dahlia × pinnata
Season too short
26 Mar – 9 Apr
6-8 wk
21 May
0 wk
Pinnate dahlia (tubers)
Dahlia × pinnata
Season too short
5 Apr – 3 May
4-8 wk
31 May
1 wk after
31 May
1 wk after
Foxglove
Digitalis purpurea
12 – 26 Mar
8-10 wk
21 May
0 wk
11 Jun
3 wk after
Busy lizzie
Impatiens walleriana
Season too short
4 Mar – 1 Apr
29 Mar
8-12 wk
27 May
1 wk after
Creeping zinnia
Sanvitalia procumbens
Season too short
26 Mar – 9 Apr
6-8 wk
21 May
0 wk
Hyacinth bean
Dolichos lablab
Season too short
22 Apr – 6 May
4-6 wk
3 Jun
2 wk after
Chinese lantern
Physalis alkekengi
Fleece
12 – 26 Mar
8 Apr
8-10 wk
21 May
3 Jun
0 wk
Love in a mist
Nigella damascena
21 May
18 Jun
0 wk
25 May
8 Jun
1 wk after
Strawflower
Xerochrysum bracteatum
Season too short
26 Mar – 9 Apr
6-8 wk
21 May
0 wk
1 Jul
6 wk after
Purple-top vervain
Verbena bonariensis
Fleece
26 Feb – 26 Mar
8 Apr
8-12 wk
21 May
3 Jun
0 wk
Cardoon
Cynara cardunculus
Greenhouse
26 Feb – 26 Mar
16 Mar
8-12 wk
21 May
0 wk
Regal-foxtail
Ptilotus nobilis
Season too short
4 Mar – 1 Apr
8-12 wk
27 May
1 wk after
Globe amaranth
Gomphrena globosa
Season too short
1 – 15 Apr
6-8 wk
27 May
1 wk after
Corn poppy
Papaver rhoeas
21 May
3 Jul
0 wk
25 May
23 Jun
1 wk after
Snapdragon
Antirrhinum majus
26 Feb – 26 Mar
28 Apr
8-12 wk
21 May
23 Jun
0 wk
6 Jun
13 Jun
2 wk after
Flossflower
Ageratum houstonianum
Season too short
18 Mar – 1 Apr
8-10 wk
27 May
1 wk after
Sweet pea
Lathyrus odoratus
26 Mar – 16 Apr
31 May
5-8 wk
21 May
5 Jul
0 wk
Stock
Matthiola incana
26 Mar – 9 Apr
22 May
6-8 wk
21 May
3 Jul
0 wk
11 Jun
23 Jun
3 wk after
Wormwood
Artemisia absinthium
26 Mar – 9 Apr
4 May
6-8 wk
21 May
15 Jun
0 wk
11 Jun
3 wk after
Mexican sunflower
Tithonia rotundifolia
Season too short
15 – 29 Apr
4-6 wk
27 May
1 wk after
Garden pansy
Viola × wittrockiana
12 – 26 Mar
20 May
8-10 wk
21 May
15 Jul
0 wk
6 Jun
5 Jul
2 wk after
Petunia
Petunia
Season too short
26 Feb – 26 Mar
8-12 wk
21 May
0 wk
Sweet Scabious
Scabiosa atropurpurea
Fleece
26 Mar – 9 Apr
22 Apr
6-8 wk
21 May
3 Jun
0 wk
25 Jun
5 wk after
Common zinnia
Zinnia elegans
Season too short
9 – 23 Apr
4-6 wk
21 May
0 wk
Common morning glory
Ipomoea purpurea
Season too short
22 Apr – 6 May
3-5 wk
27 May
1 wk after
Garden cosmos
Cosmos bipinnatus
Season too short
9 – 23 Apr
4-6 wk
21 May
0 wk
11 Jun
3 wk after
Scarlet milkweed
Asclepias curassavica
Season too short
11 Mar – 8 Apr
8-12 wk
3 Jun
2 wk after
Bee balm
Monarda didyma
26 Feb – 26 Mar
8 Apr
8-12 wk
21 May
3 Jun
0 wk
25 Jun
5 wk after
Yarrow
Achillea millefolium
26 Mar – 9 Apr
4 Apr
6-8 wk
21 May
0 wk
11 Jun
3 wk after
Safflower
Carthamus tinctorius
21 May
10 Jun
0 wk
25 May
31 May
1 wk after
Iceland poppy
Papaver nudicaule
Season too short
26 Mar – 9 Apr
24 May
6-8 wk
21 May
5 Jul
0 wk
3 May
25 Jun
3 wk before
Bishop's flower
Ammi majus
9 – 23 Apr
26 May
4-6 wk
21 May
23 Jun
0 wk
11 Jun
13 Jun
3 wk after
Drumsticks
Pycnosorus globosus
Season too short
4 – 18 Mar
10-12 wk
27 May
1 wk after
Sunflower
Helianthus annuus
Fleece
29 Apr – 6 May
26 May
3-4 wk
27 May
16 Jun
1 wk after
11 Jun
3 wk after
China aster
Callistephus chinensis
8 – 22 Apr
6 May
6-8 wk
3 Jun
17 Jun
2 wk after
9 Jul
7 wk after
Annual phlox
Phlox drummondii
Season too short
26 Mar – 9 Apr
6-8 wk
21 May
0 wk
11 Jun
3 wk after
Hollyhock
Alcea rosea
26 Mar – 9 Apr
6-8 wk
21 May
0 wk
11 Jun
3 wk after
Alpine delphinium
Delphinium elatum
26 Feb – 26 Mar
8 Apr
8-12 wk
21 May
3 Jun
0 wk
25 Jun
5 wk after
African marigold
Tagetes erecta
Season too short
26 Mar – 9 Apr
6-8 wk
21 May
0 wk
Black-eyed Susan
Rudbeckia hirta
28 Mar – 11 Apr
26 Apr
6-8 wk
23 May
7 Jun
0 wk
9 Jul
7 wk after
Wood sage
Salvia nemorosa
12 – 26 Mar
29 Mar
8-10 wk
21 May
24 May
0 wk
25 Jun
5 wk after
Black-eyed susan vine
Thunbergia alata
Season too short
18 Mar – 15 Apr
6-10 wk
27 May
1 wk after
California goldenpoppy
Eschscholzia californica
21 May
26 Jun
0 wk
25 May
16 Jun
1 wk after
Painted tongue
Salpiglossis sinuata
Fleece
18 Mar – 1 Apr
17 Apr
8-10 wk
27 May
12 Jun
1 wk after
Water forget-me-not
Myosotis scorpioides
26 Mar – 9 Apr
4 May
6-8 wk
21 May
15 Jun
0 wk
11 Jun
3 wk after