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Rel. frost
Last spring frost (0°C) 4 May Frost 9 of 10 years · 20 years of data
Frost-free season 127 days 4 May – 8 Sep
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)
16 – 30 Mar
16 Jun
5-7 wk
4 May
21 Jul
0 wk
8 May
11 Jul
1 wk after
Broccoli
Brassica oleracea (Italica-gruppen)
23 Mar – 6 Apr
28 Jun
4-6 wk
4 May
26 Jul
0 wk
8 May
16 Jul
1 wk after
Chili pepper
Capsicum annuum
Season too short
22 Feb – 22 Mar
8-12 wk
17 May
2 wk after
Curly Kale
Brassica oleracea (Curly Kale-gruppen)
16 – 30 Mar
11 Jun
5-7 wk
4 May
16 Jul
0 wk
4 May
6 Jul
0 wk
Garden cucumber
Cucumis sativus
Season too short
19 – 26 Apr
3-4 wk
17 May
2 wk after
Florence Fennel
Foeniculum vulgare
Fleece
21 – 28 Apr
21 May
4-5 wk
26 May
18 Jun
3 wk after
8 Jun
8 Jun
5 wk after
Butter bean
Phaseolus lunatus
Season too short
22 – 29 May
3-4 wk
19 Jun
7 wk after
Onion
Allium cepa (Cepa-gruppen)
9 Feb – 9 Mar
12 Mar
8-12 wk
4 May
7 May
0 wk
25 May
3 wk after
Onion (sets)
Allium cepa (Cepa-gruppen)
8 May
27 May
1 wk after
8 May
17 May
1 wk after
Maize
Zea mays
Season too short
6 – 13 Apr
3-4 wk
4 May
0 wk
Swiss Chard
Beta vulgaris (Flavescens-gruppen)
13 – 20 Apr
17 Jun
3-4 wk
11 May
8 Jul
1 wk after
25 May
28 Jun
3 wk after
Carrot
Daucus carota subsp. sativus var. sativus
4 May
4 Jul
0 wk
4 May
24 Jun
0 wk
Palm Kale
Brassica oleracea (Palm Kale-gruppen)
16 – 30 Mar
11 Jun
5-7 wk
4 May
16 Jul
0 wk
4 May
6 Jul
0 wk
Potato
Solanum tuberosum
8 – 22 Apr
13 May
4-6 wk
20 May
10 Jun
2 wk after
20 May
31 May
2 wk after
Ornamental Kale
Brassica oleracea (Ornamental-gruppen)
16 – 30 Mar
19 Jun
5-7 wk
4 May
24 Jul
0 wk
8 May
14 Jul
1 wk after
Pumpkin
Cucurbita pepo
Season too short
19 – 26 Apr
3-4 wk
17 May
2 wk after
Beetroot
Beta vulgaris (Conditiva-gruppen)
13 – 20 Apr
18 May
3-4 wk
11 May
8 Jun
1 wk after
25 May
29 May
3 wk after
Red Cabbage
Brassica oleracea (Red Cabbage-gruppen)
23 Mar – 6 Apr
23 Jun
4-6 wk
4 May
21 Jul
0 wk
Lettuce
Lactuca sativa
6 – 13 Apr
8 Jul
3-4 wk
4 May
29 Jul
0 wk
8 May
19 Jul
1 wk after
Savoy Cabbage
Brassica oleracea (Savoy Cabbage-gruppen)
23 Mar – 6 Apr
23 Jun
4-6 wk
4 May
21 Jul
0 wk
Shallot (bulbs)
Allium cepa (Aggregatum-gruppen)
6 – 20 Apr
15 May
2-4 wk
4 May
29 May
0 wk
4 May
19 May
0 wk
Shallot (sets)
Allium cepa (Aggregatum-gruppen)
8 May
27 May
1 wk after
8 May
17 May
1 wk after
Spinach
Spinacia oleracea
6 – 13 Apr
25 Jul
3-4 wk
4 May
15 Aug
0 wk
30 Apr
5 Aug
1 wk before
Sweet potato
Ipomoea batatas
5 – 19 Jun
4-6 wk
17 Jul
11 wk after
Garden tomato
Solanum lycopersicum
Season too short
9 – 23 Mar
6-8 wk
4 May
0 wk
Tomatillo
Physalis ixocarpa
Common Bean
Phaseolus vulgaris
Season too short
6 – 20 Apr
2-4 wk
4 May
0 wk
25 May
3 wk after
White Cabbage
Brassica oleracea (White Cabbage-gruppen)
23 Mar – 6 Apr
23 Jun
4-6 wk
4 May
21 Jul
0 wk
Garden pea
Pisum sativum
6 – 13 Apr
23 Jun
3-4 wk
4 May
14 Jul
0 wk
8 May
4 Jul
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
5 – 19 Apr
4-6 wk
17 May
2 wk after
Lemon balm
Melissa officinalis
23 Feb – 9 Mar
19 May
8-10 wk
4 May
14 Jul
0 wk
8 Jun
4 Jul
5 wk after
Dill
Anethum graveolens
8 May
8 Jul
1 wk after
Wild chives
Allium schoenoprasum
9 – 23 Mar
4 Jun
6-8 wk
4 May
16 Jul
0 wk
8 May
6 Jul
1 wk after
Spearmint
Mentha spicata
9 Feb – 9 Mar
21 May
8-12 wk
4 May
16 Jul
0 wk
8 Jun
6 Jul
5 wk after
Coriander
Coriandrum sativum
4 May
28 Jul
0 wk
25 May
18 Jul
3 wk after
Garden sage
Salvia officinalis
2 – 16 Mar
6 May
8-10 wk
11 May
1 Jul
1 wk after
Common thyme
Thymus vulgaris
23 Feb – 9 Mar
11 May
8-10 wk
4 May
6 Jul
0 wk
Oregano
Origanum vulgare
9 – 23 Mar
25 May
6-8 wk
4 May
6 Jul
0 wk
8 Jun
26 Jun
5 wk after
Parsley
Petroselinum crispum
9 – 23 Mar
25 May
6-8 wk
4 May
6 Jul
0 wk
8 May
26 Jun
1 wk after
Rosemary
Salvia rosmarinus
2 Feb – 2 Mar
17 Mar
10-14 wk
11 May
26 May
1 wk after

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
19 – 26 Apr
3-4 wk
17 May
2 wk after
Cornflower
Centaurea cyanus
4 May
16 Jul
0 wk
8 May
6 Jul
1 wk after
Statice
Limonium sinuatum
Greenhouse
23 Feb – 9 Mar
27 Mar
8-10 wk
4 May
22 May
0 wk
Sweet William
Dianthus barbatus
9 – 23 Mar
6-8 wk
4 May
0 wk
20 May
2 wk after
Snow-on-the-mountain
Euphorbia marginata
Greenhouse
9 – 23 Mar
10 Apr
6-8 wk
4 May
22 May
0 wk
14 Jun
6 wk after
Pinnate dahlia
Dahlia × pinnata
Greenhouse
9 – 23 Mar
21 Apr
6-8 wk
4 May
2 Jun
0 wk
Pinnate dahlia (tubers)
Dahlia × pinnata
Fleece
30 Mar – 27 Apr
3 Apr
4-8 wk
25 May
3 wk after
25 May
3 wk after
Foxglove
Digitalis purpurea
23 Feb – 9 Mar
8-10 wk
4 May
0 wk
25 May
3 wk after
Busy lizzie
Impatiens walleriana
Greenhouse
22 Feb – 22 Mar
1 May
8-12 wk
17 May
26 Jun
2 wk after
Creeping zinnia
Sanvitalia procumbens
Greenhouse
9 – 23 Mar
20 Apr
6-8 wk
4 May
1 Jun
0 wk
Hyacinth bean
Dolichos lablab
Season too short
14 – 28 Apr
4-6 wk
26 May
3 wk after
Chinese lantern
Physalis alkekengi
2 – 16 Mar
3 Apr
8-10 wk
11 May
29 May
1 wk after
Love in a mist
Nigella damascena
4 May
29 Jun
0 wk
8 May
19 Jun
1 wk after
Strawflower
Xerochrysum bracteatum
Greenhouse
9 – 23 Mar
31 Mar
6-8 wk
4 May
12 May
0 wk
14 Jun
6 wk after
Purple-top vervain
Verbena bonariensis
16 Feb – 16 Mar
3 Apr
8-12 wk
11 May
29 May
1 wk after
Cardoon
Cynara cardunculus
Greenhouse
9 Feb – 9 Mar
22 Mar
8-12 wk
4 May
17 May
0 wk
Regal-foxtail
Ptilotus nobilis
Season too short
22 Feb – 22 Mar
8-12 wk
17 May
2 wk after
Globe amaranth
Gomphrena globosa
Season too short
22 Mar – 5 Apr
6-8 wk
17 May
2 wk after
Corn poppy
Papaver rhoeas
4 May
14 Jul
0 wk
8 May
4 Jul
1 wk after
Snapdragon
Antirrhinum majus
9 Feb – 9 Mar
9 May
8-12 wk
4 May
4 Jul
0 wk
20 May
24 Jun
2 wk after
Flossflower
Ageratum houstonianum
Greenhouse
8 – 22 Mar
6 Apr
8-10 wk
17 May
1 Jun
2 wk after
Sweet pea
Lathyrus odoratus
9 – 30 Mar
1 Jun
5-8 wk
4 May
6 Jul
0 wk
Stock
Matthiola incana
9 – 23 Mar
2 Jun
6-8 wk
4 May
14 Jul
0 wk
25 May
4 Jul
3 wk after
Wormwood
Artemisia absinthium
9 – 23 Mar
5 May
6-8 wk
4 May
16 Jun
0 wk
25 May
6 Jun
3 wk after
Mexican sunflower
Tithonia rotundifolia
Season too short
5 – 19 Apr
4-6 wk
17 May
2 wk after
Garden pansy
Viola × wittrockiana
23 Feb – 9 Mar
21 May
8-10 wk
4 May
16 Jul
0 wk
20 May
6 Jul
2 wk after
Petunia
Petunia
Greenhouse
9 Feb – 9 Mar
27 Mar
8-12 wk
4 May
22 May
0 wk
Sweet Scabious
Scabiosa atropurpurea
16 – 30 Mar
17 Apr
6-8 wk
11 May
29 May
1 wk after
22 Jun
7 wk after
Common zinnia
Zinnia elegans
Greenhouse
23 Mar – 6 Apr
13 Apr
4-6 wk
4 May
11 May
0 wk
Common morning glory
Ipomoea purpurea
Season too short
12 – 26 Apr
3-5 wk
17 May
2 wk after
Garden cosmos
Cosmos bipinnatus
Greenhouse
23 Mar – 6 Apr
5 May
4-6 wk
4 May
2 Jun
0 wk
25 May
3 wk after
Scarlet milkweed
Asclepias curassavica
Season too short
3 – 31 Mar
3 Mar
8-12 wk
26 May
3 wk after
Bee balm
Monarda didyma
9 Feb – 9 Mar
19 Apr
8-12 wk
4 May
14 Jun
0 wk
8 Jun
5 wk after
Yarrow
Achillea millefolium
9 – 23 Mar
5 Apr
6-8 wk
4 May
17 May
0 wk
25 May
3 wk after
Safflower
Carthamus tinctorius
4 May
16 Jun
0 wk
8 May
6 Jun
1 wk after
Iceland poppy
Papaver nudicaule
Season too short
9 – 23 Mar
25 May
6-8 wk
4 May
6 Jul
0 wk
16 Apr
26 Jun
3 wk before
Bishop's flower
Ammi majus
23 Mar – 6 Apr
6 Jun
4-6 wk
4 May
4 Jul
0 wk
25 May
24 Jun
3 wk after
Drumsticks
Pycnosorus globosus
Season too short
22 Feb – 8 Mar
10-12 wk
17 May
2 wk after
Sunflower
Helianthus annuus
28 Apr – 5 May
25 May
3-4 wk
26 May
15 Jun
3 wk after
8 Jun
5 wk after
China aster
Callistephus chinensis
31 Mar – 14 Apr
14 May
6-8 wk
26 May
25 Jun
3 wk after
22 Jun
7 wk after
Annual phlox
Phlox drummondii
Greenhouse
9 – 23 Mar
20 Apr
6-8 wk
4 May
1 Jun
0 wk
25 May
3 wk after
Hollyhock
Alcea rosea
9 – 23 Mar
6-8 wk
4 May
0 wk
25 May
3 wk after
Alpine delphinium
Delphinium elatum
9 Feb – 9 Mar
19 Apr
8-12 wk
4 May
14 Jun
0 wk
8 Jun
5 wk after
African marigold
Tagetes erecta
Greenhouse
9 – 23 Mar
20 Apr
6-8 wk
4 May
1 Jun
0 wk
Black-eyed Susan
Rudbeckia hirta
16 – 30 Mar
4 May
6-8 wk
11 May
15 Jun
1 wk after
22 Jun
7 wk after
Wood sage
Salvia nemorosa
23 Feb – 9 Mar
9 Apr
8-10 wk
4 May
4 Jun
0 wk
8 Jun
5 wk after
Black-eyed susan vine
Thunbergia alata
Season too short
8 Mar – 5 Apr
6-10 wk
17 May
2 wk after
California goldenpoppy
Eschscholzia californica
4 May
9 Jul
0 wk
8 May
29 Jun
1 wk after
Painted tongue
Salpiglossis sinuata
17 – 31 Mar
7 Apr
8-10 wk
26 May
2 Jun
3 wk after
Water forget-me-not
Myosotis scorpioides
9 – 23 Mar
5 May
6-8 wk
4 May
16 Jun
0 wk
25 May
6 Jun
3 wk after