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Method
Rel. frost
Last spring frost (0°C) 19 May Frost 9 of 10 years · 20 years of data
Frost-free season 91 days 19 May – 18 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)
31 Mar – 14 Apr
9 Jun
5-7 wk
19 May
14 Jul
0 wk
20 May
4 Jul
0 wk
Broccoli
Brassica oleracea (Italica-gruppen)
7 – 21 Apr
21 Jun
4-6 wk
19 May
19 Jul
0 wk
20 May
9 Jul
0 wk
Chili pepper
Capsicum annuum
Season too short
2 – 30 Mar
8-12 wk
25 May
1 wk after
Curly Kale
Brassica oleracea (Curly Kale-gruppen)
31 Mar – 14 Apr
6 Jun
5-7 wk
19 May
11 Jul
0 wk
19 May
1 Jul
0 wk
Garden cucumber
Cucumis sativus
Season too short
27 Apr – 4 May
3-4 wk
25 May
1 wk after
Florence Fennel
Foeniculum vulgare
Greenhouse
20 – 27 Apr
19 May
4-5 wk
25 May
16 Jun
1 wk after
1 Jun
6 Jun
2 wk after
Butter bean
Phaseolus lunatus
Season too short
30 May – 6 Jun
3-4 wk
27 Jun
6 wk after
Onion
Allium cepa (Cepa-gruppen)
Fleece
24 Feb – 24 Mar
17 Mar
8-12 wk
19 May
0 wk
25 May
1 wk after
Onion (sets)
Allium cepa (Cepa-gruppen)
20 May
22 May
0 wk
20 May
0 wk
Maize
Zea mays
Season too short
21 – 28 Apr
3-4 wk
19 May
0 wk
Swiss Chard
Beta vulgaris (Flavescens-gruppen)
23 – 30 Apr
5 Jun
3-4 wk
21 May
26 Jun
0 wk
1 Jun
16 Jun
2 wk after
Carrot
Daucus carota subsp. sativus var. sativus
19 May
16 Jun
0 wk
19 May
6 Jun
0 wk
Palm Kale
Brassica oleracea (Palm Kale-gruppen)
31 Mar – 14 Apr
6 Jun
5-7 wk
19 May
11 Jul
0 wk
19 May
1 Jul
0 wk
Potato
Solanum tuberosum
17 Apr – 1 May
25 Apr
4-6 wk
29 May
1 wk after
29 May
1 wk after
Ornamental Kale
Brassica oleracea (Ornamental-gruppen)
31 Mar – 14 Apr
1 Jun
5-7 wk
19 May
6 Jul
0 wk
20 May
26 Jun
0 wk
Pumpkin
Cucurbita pepo
Season too short
27 Apr – 4 May
3-4 wk
25 May
1 wk after
Beetroot
Beta vulgaris (Conditiva-gruppen)
23 – 30 Apr
5 May
3-4 wk
21 May
26 May
0 wk
1 Jun
2 wk after
Red Cabbage
Brassica oleracea (Red Cabbage-gruppen)
7 – 21 Apr
18 Jun
4-6 wk
19 May
16 Jul
0 wk
Lettuce
Lactuca sativa
21 – 28 Apr
20 Jun
3-4 wk
19 May
11 Jul
0 wk
20 May
1 Jul
0 wk
Savoy Cabbage
Brassica oleracea (Savoy Cabbage-gruppen)
7 – 21 Apr
18 Jun
4-6 wk
19 May
16 Jul
0 wk
Shallot (bulbs)
Allium cepa (Aggregatum-gruppen)
21 Apr – 5 May
12 May
2-4 wk
19 May
26 May
0 wk
19 May
0 wk
Shallot (sets)
Allium cepa (Aggregatum-gruppen)
20 May
22 May
0 wk
20 May
0 wk
Spinach
Spinacia oleracea
21 – 28 Apr
14 Jul
3-4 wk
19 May
4 Aug
0 wk
16 May
25 Jul
0 wk
Sweet potato
Ipomoea batatas
13 – 27 Jun
4-6 wk
25 Jul
10 wk after
Garden tomato
Solanum lycopersicum
Season too short
24 Mar – 7 Apr
6-8 wk
19 May
0 wk
Tomatillo
Physalis ixocarpa
Common Bean
Phaseolus vulgaris
Season too short
21 Apr – 5 May
2-4 wk
19 May
0 wk
1 Jun
2 wk after
White Cabbage
Brassica oleracea (White Cabbage-gruppen)
7 – 21 Apr
18 Jun
4-6 wk
19 May
16 Jul
0 wk
Garden pea
Pisum sativum
21 – 28 Apr
5 Jun
3-4 wk
19 May
26 Jun
0 wk
20 May
16 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
13 – 27 Apr
4-6 wk
25 May
1 wk after
Lemon balm
Melissa officinalis
10 – 24 Mar
1 May
8-10 wk
19 May
26 Jun
0 wk
13 Jun
16 Jun
4 wk after
Dill
Anethum graveolens
20 May
26 Jun
0 wk
Wild chives
Allium schoenoprasum
24 Mar – 7 Apr
30 May
6-8 wk
19 May
11 Jul
0 wk
20 May
1 Jul
0 wk
Spearmint
Mentha spicata
24 Feb – 24 Mar
14 May
8-12 wk
19 May
9 Jul
0 wk
13 Jun
29 Jun
4 wk after
Coriander
Coriandrum sativum
19 May
16 Jul
0 wk
1 Jun
6 Jul
2 wk after
Garden sage
Salvia officinalis
12 – 26 Mar
1 May
8-10 wk
21 May
26 Jun
0 wk
Common thyme
Thymus vulgaris
10 – 24 Mar
6 May
8-10 wk
19 May
1 Jul
0 wk
Oregano
Origanum vulgare
24 Mar – 7 Apr
18 May
6-8 wk
19 May
29 Jun
0 wk
13 Jun
19 Jun
4 wk after
Parsley
Petroselinum crispum
24 Mar – 7 Apr
18 May
6-8 wk
19 May
29 Jun
0 wk
20 May
19 Jun
0 wk
Rosemary
Salvia rosmarinus
Fleece
10 Feb – 10 Mar
17 Mar
10-14 wk
19 May
26 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
27 Apr – 4 May
3-4 wk
25 May
1 wk after
Cornflower
Centaurea cyanus
19 May
9 Jul
0 wk
20 May
29 Jun
0 wk
Statice
Limonium sinuatum
Season too short
10 – 24 Mar
10 Mar
8-10 wk
19 May
0 wk
Sweet William
Dianthus barbatus
24 Mar – 7 Apr
6-8 wk
19 May
0 wk
29 May
1 wk after
Snow-on-the-mountain
Euphorbia marginata
Season too short
24 Mar – 7 Apr
24 Mar
6-8 wk
19 May
0 wk
20 Jun
5 wk after
Pinnate dahlia
Dahlia × pinnata
Season too short
24 Mar – 7 Apr
31 Mar
6-8 wk
19 May
0 wk
Pinnate dahlia (tubers)
Dahlia × pinnata
Greenhouse
30 Mar – 27 Apr
14 Apr
4-8 wk
25 May
1 wk after
25 May
1 wk after
Foxglove
Digitalis purpurea
10 – 24 Mar
8-10 wk
19 May
0 wk
1 Jun
2 wk after
Busy lizzie
Impatiens walleriana
Greenhouse
2 – 30 Mar
12 Apr
8-12 wk
25 May
7 Jun
1 wk after
Creeping zinnia
Sanvitalia procumbens
Season too short
24 Mar – 7 Apr
3 Apr
6-8 wk
19 May
0 wk
Hyacinth bean
Dolichos lablab
Season too short
20 Apr – 4 May
4-6 wk
1 Jun
2 wk after
Chinese lantern
Physalis alkekengi
Fleece
10 – 24 Mar
1 Apr
8-10 wk
19 May
27 May
0 wk
Love in a mist
Nigella damascena
19 May
11 Jun
0 wk
20 May
1 Jun
0 wk
Strawflower
Xerochrysum bracteatum
Season too short
24 Mar – 7 Apr
6-8 wk
19 May
0 wk
20 Jun
5 wk after
Purple-top vervain
Verbena bonariensis
Fleece
24 Feb – 24 Mar
1 Apr
8-12 wk
19 May
27 May
0 wk
Cardoon
Cynara cardunculus
Season too short
24 Feb – 24 Mar
11 Mar
8-12 wk
19 May
0 wk
Regal-foxtail
Ptilotus nobilis
Season too short
2 – 30 Mar
8-12 wk
25 May
1 wk after
Globe amaranth
Gomphrena globosa
Season too short
30 Mar – 13 Apr
6-8 wk
25 May
1 wk after
Corn poppy
Papaver rhoeas
19 May
26 Jun
0 wk
20 May
16 Jun
0 wk
Snapdragon
Antirrhinum majus
24 Feb – 24 Mar
21 Apr
8-12 wk
19 May
16 Jun
0 wk
29 May
6 Jun
1 wk after
Flossflower
Ageratum houstonianum
Season too short
16 – 30 Mar
20 Mar
8-10 wk
25 May
1 wk after
Sweet pea
Lathyrus odoratus
24 Mar – 14 Apr
25 May
5-8 wk
19 May
29 Jun
0 wk
Stock
Matthiola incana
24 Mar – 7 Apr
15 May
6-8 wk
19 May
26 Jun
0 wk
1 Jun
16 Jun
2 wk after
Wormwood
Artemisia absinthium
24 Mar – 7 Apr
30 Apr
6-8 wk
19 May
11 Jun
0 wk
1 Jun
1 Jun
2 wk after
Mexican sunflower
Tithonia rotundifolia
Season too short
13 – 27 Apr
4-6 wk
25 May
1 wk after
Garden pansy
Viola × wittrockiana
10 – 24 Mar
16 May
8-10 wk
19 May
11 Jul
0 wk
29 May
1 Jul
1 wk after
Petunia
Petunia
Season too short
24 Feb – 24 Mar
10 Mar
8-12 wk
19 May
0 wk
Sweet Scabious
Scabiosa atropurpurea
Fleece
24 Mar – 7 Apr
15 Apr
6-8 wk
19 May
27 May
0 wk
13 Jun
4 wk after
Common zinnia
Zinnia elegans
Season too short
7 – 21 Apr
4-6 wk
19 May
0 wk
Common morning glory
Ipomoea purpurea
Season too short
20 Apr – 4 May
3-5 wk
25 May
1 wk after
Garden cosmos
Cosmos bipinnatus
Season too short
7 – 21 Apr
14 Apr
4-6 wk
19 May
0 wk
1 Jun
2 wk after
Scarlet milkweed
Asclepias curassavica
Season too short
9 Mar – 6 Apr
8-12 wk
1 Jun
2 wk after
Bee balm
Monarda didyma
24 Feb – 24 Mar
1 Apr
8-12 wk
19 May
27 May
0 wk
13 Jun
4 wk after
Yarrow
Achillea millefolium
24 Mar – 7 Apr
31 Mar
6-8 wk
19 May
0 wk
1 Jun
2 wk after
Safflower
Carthamus tinctorius
19 May
5 Jun
0 wk
20 May
26 May
0 wk
Iceland poppy
Papaver nudicaule
Season too short
24 Mar – 7 Apr
20 May
6-8 wk
19 May
1 Jul
0 wk
3 May
21 Jun
2 wk before
Bishop's flower
Ammi majus
7 – 21 Apr
19 May
4-6 wk
19 May
16 Jun
0 wk
1 Jun
6 Jun
2 wk after
Drumsticks
Pycnosorus globosus
Season too short
2 – 16 Mar
10-12 wk
25 May
1 wk after
Sunflower
Helianthus annuus
Fleece
27 Apr – 4 May
25 May
3-4 wk
25 May
15 Jun
1 wk after
1 Jun
5 Jun
2 wk after
China aster
Callistephus chinensis
Fleece
30 Mar – 13 Apr
14 May
6-8 wk
25 May
25 Jun
1 wk after
13 Jun
15 Jun
4 wk after
Annual phlox
Phlox drummondii
Greenhouse
24 Mar – 7 Apr
3 Apr
6-8 wk
19 May
0 wk
1 Jun
2 wk after
Hollyhock
Alcea rosea
24 Mar – 7 Apr
6-8 wk
19 May
0 wk
1 Jun
2 wk after
Alpine delphinium
Delphinium elatum
24 Feb – 24 Mar
1 Apr
8-12 wk
19 May
27 May
0 wk
13 Jun
4 wk after
African marigold
Tagetes erecta
Season too short
24 Mar – 7 Apr
3 Apr
6-8 wk
19 May
0 wk
Black-eyed Susan
Rudbeckia hirta
Fleece
24 Mar – 7 Apr
4 May
6-8 wk
19 May
15 Jun
0 wk
13 Jun
4 wk after
Wood sage
Salvia nemorosa
10 – 24 Mar
22 Mar
8-10 wk
19 May
0 wk
13 Jun
4 wk after
Black-eyed susan vine
Thunbergia alata
Season too short
16 Mar – 13 Apr
6-10 wk
25 May
1 wk after
California goldenpoppy
Eschscholzia californica
19 May
25 Jun
0 wk
20 May
15 Jun
0 wk
Painted tongue
Salpiglossis sinuata
Fleece
16 – 30 Mar
11 Apr
8-10 wk
25 May
6 Jun
1 wk after
Water forget-me-not
Myosotis scorpioides
24 Mar – 7 Apr
30 Apr
6-8 wk
19 May
11 Jun
0 wk
1 Jun
1 Jun
2 wk after