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Rel. frost
Last spring frost (0°C) 9 May Frost 9 of 10 years · 20 years of data
Frost-free season 126 days 9 May – 12 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)
21 Mar – 4 Apr
9 Jun
5-7 wk
9 May
14 Jul
0 wk
10 May
4 Jul
0 wk
Broccoli
Brassica oleracea (Italica-gruppen)
28 Mar – 11 Apr
21 Jun
4-6 wk
9 May
19 Jul
0 wk
10 May
9 Jul
0 wk
Chili pepper
Capsicum annuum
Season too short
24 Feb – 24 Mar
8-12 wk
19 May
1 wk after
Curly Kale
Brassica oleracea (Curly Kale-gruppen)
21 Mar – 4 Apr
4 Jun
5-7 wk
9 May
9 Jul
0 wk
9 May
29 Jun
0 wk
Garden cucumber
Cucumis sativus
Season too short
21 – 28 Apr
3-4 wk
19 May
1 wk after
Florence Fennel
Foeniculum vulgare
Fleece
24 Apr – 1 May
29 May
4-5 wk
29 May
26 Jun
3 wk after
3 Jun
16 Jun
4 wk after
Butter bean
Phaseolus lunatus
Season too short
22 – 29 May
3-4 wk
19 Jun
6 wk after
Onion
Allium cepa (Cepa-gruppen)
14 Feb – 14 Mar
1 Mar
8-12 wk
9 May
0 wk
22 May
2 wk after
Onion (sets)
Allium cepa (Cepa-gruppen)
10 May
16 May
0 wk
10 May
0 wk
Maize
Zea mays
Season too short
13 – 20 Apr
3-4 wk
11 May
0 wk
Swiss Chard
Beta vulgaris (Flavescens-gruppen)
16 – 23 Apr
25 Jun
3-4 wk
14 May
16 Jul
1 wk after
22 May
6 Jul
2 wk after
Carrot
Daucus carota subsp. sativus var. sativus
9 May
29 Jun
0 wk
9 May
19 Jun
0 wk
Palm Kale
Brassica oleracea (Palm Kale-gruppen)
21 Mar – 4 Apr
4 Jun
5-7 wk
9 May
9 Jul
0 wk
9 May
29 Jun
0 wk
Potato
Solanum tuberosum
Fleece
29 Mar – 12 Apr
8 May
4-6 wk
10 May
5 Jun
0 wk
10 May
26 May
0 wk
Ornamental Kale
Brassica oleracea (Ornamental-gruppen)
21 Mar – 4 Apr
14 Jun
5-7 wk
9 May
19 Jul
0 wk
10 May
9 Jul
0 wk
Pumpkin
Cucurbita pepo
Season too short
21 – 28 Apr
3-4 wk
19 May
1 wk after
Beetroot
Beta vulgaris (Conditiva-gruppen)
Fleece
11 – 18 Apr
26 Apr
3-4 wk
9 May
17 May
0 wk
15 May
1 wk after
Red Cabbage
Brassica oleracea (Red Cabbage-gruppen)
28 Mar – 11 Apr
16 Jun
4-6 wk
9 May
14 Jul
0 wk
Lettuce
Lactuca sativa
11 – 18 Apr
3 Jul
3-4 wk
9 May
24 Jul
0 wk
10 May
14 Jul
0 wk
Savoy Cabbage
Brassica oleracea (Savoy Cabbage-gruppen)
28 Mar – 11 Apr
16 Jun
4-6 wk
9 May
14 Jul
0 wk
Shallot (bulbs)
Allium cepa (Aggregatum-gruppen)
11 – 25 Apr
6 May
2-4 wk
9 May
20 May
0 wk
9 May
10 May
0 wk
Shallot (sets)
Allium cepa (Aggregatum-gruppen)
10 May
16 May
0 wk
10 May
0 wk
Spinach
Spinacia oleracea
11 – 18 Apr
18 Jul
3-4 wk
9 May
8 Aug
0 wk
6 May
29 Jul
0 wk
Sweet potato
Ipomoea batatas
3 – 17 Jun
4-6 wk
15 Jul
10 wk after
Garden tomato
Solanum lycopersicum
Season too short
16 – 30 Mar
6-8 wk
11 May
0 wk
Tomatillo
Physalis ixocarpa
Common Bean
Phaseolus vulgaris
Season too short
13 – 27 Apr
2-4 wk
11 May
0 wk
22 May
2 wk after
White Cabbage
Brassica oleracea (White Cabbage-gruppen)
28 Mar – 11 Apr
16 Jun
4-6 wk
9 May
14 Jul
0 wk
Garden pea
Pisum sativum
11 – 18 Apr
18 Jun
3-4 wk
9 May
9 Jul
0 wk
10 May
29 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
7 – 21 Apr
4-6 wk
19 May
1 wk after
Lemon balm
Melissa officinalis
28 Feb – 14 Mar
14 May
8-10 wk
9 May
9 Jul
0 wk
3 Jun
29 Jun
4 wk after
Dill
Anethum graveolens
10 May
16 Jul
0 wk
Wild chives
Allium schoenoprasum
14 – 28 Mar
28 May
6-8 wk
9 May
9 Jul
0 wk
10 May
29 Jun
0 wk
Spearmint
Mentha spicata
14 Feb – 14 Mar
14 May
8-12 wk
9 May
9 Jul
0 wk
3 Jun
29 Jun
4 wk after
Coriander
Coriandrum sativum
9 May
5 Aug
0 wk
22 May
26 Jul
2 wk after
Garden sage
Salvia officinalis
5 – 19 Mar
29 Apr
8-10 wk
14 May
24 Jun
1 wk after
Common thyme
Thymus vulgaris
28 Feb – 14 Mar
4 May
8-10 wk
9 May
29 Jun
0 wk
Oregano
Origanum vulgare
14 – 28 Mar
18 May
6-8 wk
9 May
29 Jun
0 wk
3 Jun
19 Jun
4 wk after
Parsley
Petroselinum crispum
14 – 28 Mar
18 May
6-8 wk
9 May
29 Jun
0 wk
10 May
19 Jun
0 wk
Rosemary
Salvia rosmarinus
5 Feb – 5 Mar
25 Mar
10-14 wk
14 May
3 Jun
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
21 – 28 Apr
3-4 wk
19 May
1 wk after
Cornflower
Centaurea cyanus
9 May
9 Jul
0 wk
10 May
29 Jun
0 wk
Statice
Limonium sinuatum
Greenhouse
2 – 16 Mar
26 Mar
8-10 wk
11 May
21 May
0 wk
Sweet William
Dianthus barbatus
14 – 28 Mar
6-8 wk
9 May
0 wk
19 May
1 wk after
Snow-on-the-mountain
Euphorbia marginata
Greenhouse
16 – 30 Mar
9 Apr
6-8 wk
11 May
21 May
0 wk
10 Jun
5 wk after
Pinnate dahlia
Dahlia × pinnata
Greenhouse
14 – 28 Mar
25 Apr
6-8 wk
9 May
6 Jun
0 wk
Pinnate dahlia (tubers)
Dahlia × pinnata
Greenhouse
20 Mar – 17 Apr
9 May
4-8 wk
15 May
6 Jun
1 wk after
15 May
27 May
1 wk after
Foxglove
Digitalis purpurea
28 Feb – 14 Mar
8-10 wk
9 May
0 wk
22 May
2 wk after
Busy lizzie
Impatiens walleriana
Greenhouse
24 Feb – 24 Mar
11 May
8-12 wk
19 May
6 Jul
1 wk after
Creeping zinnia
Sanvitalia procumbens
Greenhouse
16 – 30 Mar
19 Apr
6-8 wk
11 May
31 May
0 wk
Hyacinth bean
Dolichos lablab
Season too short
17 Apr – 1 May
4-6 wk
29 May
3 wk after
Chinese lantern
Physalis alkekengi
5 – 19 Mar
11 Apr
8-10 wk
14 May
6 Jun
1 wk after
Love in a mist
Nigella damascena
9 May
24 Jun
0 wk
10 May
14 Jun
0 wk
Strawflower
Xerochrysum bracteatum
Season too short
16 – 30 Mar
30 Mar
6-8 wk
11 May
11 May
0 wk
10 Jun
5 wk after
Purple-top vervain
Verbena bonariensis
19 Feb – 19 Mar
11 Apr
8-12 wk
14 May
6 Jun
1 wk after
Cardoon
Cynara cardunculus
Greenhouse
16 Feb – 16 Mar
15 Mar
8-12 wk
11 May
0 wk
Regal-foxtail
Ptilotus nobilis
Season too short
24 Feb – 24 Mar
8-12 wk
19 May
1 wk after
Globe amaranth
Gomphrena globosa
Season too short
24 Mar – 7 Apr
6-8 wk
19 May
1 wk after
Corn poppy
Papaver rhoeas
9 May
9 Jul
0 wk
10 May
29 Jun
0 wk
Snapdragon
Antirrhinum majus
14 Feb – 14 Mar
4 May
8-12 wk
9 May
29 Jun
0 wk
19 May
19 Jun
1 wk after
Flossflower
Ageratum houstonianum
Greenhouse
10 – 24 Mar
5 Apr
8-10 wk
19 May
31 May
1 wk after
Sweet pea
Lathyrus odoratus
14 Mar – 4 Apr
25 May
5-8 wk
9 May
29 Jun
0 wk
Stock
Matthiola incana
14 – 28 Mar
28 May
6-8 wk
9 May
9 Jul
0 wk
22 May
29 Jun
2 wk after
Wormwood
Artemisia absinthium
14 – 28 Mar
28 Apr
6-8 wk
9 May
9 Jun
0 wk
22 May
30 May
2 wk after
Mexican sunflower
Tithonia rotundifolia
Season too short
7 – 21 Apr
4-6 wk
19 May
1 wk after
Garden pansy
Viola × wittrockiana
28 Feb – 14 Mar
14 May
8-10 wk
9 May
9 Jul
0 wk
19 May
29 Jun
1 wk after
Petunia
Petunia
Greenhouse
16 Feb – 16 Mar
26 Mar
8-12 wk
11 May
21 May
0 wk
Sweet Scabious
Scabiosa atropurpurea
19 Mar – 2 Apr
25 Apr
6-8 wk
14 May
6 Jun
1 wk after
21 Jun
6 wk after
Common zinnia
Zinnia elegans
Greenhouse
30 Mar – 13 Apr
23 Apr
4-6 wk
11 May
21 May
0 wk
Common morning glory
Ipomoea purpurea
Season too short
14 – 28 Apr
3-5 wk
19 May
1 wk after
Garden cosmos
Cosmos bipinnatus
Greenhouse
30 Mar – 13 Apr
9 May
4-6 wk
11 May
6 Jun
0 wk
22 May
27 May
2 wk after
Scarlet milkweed
Asclepias curassavica
Season too short
6 Mar – 3 Apr
8-12 wk
29 May
3 wk after
Bee balm
Monarda didyma
14 Feb – 14 Mar
14 Apr
8-12 wk
9 May
9 Jun
0 wk
3 Jun
4 wk after
Yarrow
Achillea millefolium
14 – 28 Mar
29 Mar
6-8 wk
9 May
10 May
0 wk
22 May
2 wk after
Safflower
Carthamus tinctorius
9 May
9 Jun
0 wk
10 May
30 May
0 wk
Iceland poppy
Papaver nudicaule
Season too short
14 – 28 Mar
18 May
6-8 wk
9 May
29 Jun
0 wk
23 Apr
19 Jun
2 wk before
Bishop's flower
Ammi majus
28 Mar – 11 Apr
1 Jun
4-6 wk
9 May
29 Jun
0 wk
22 May
19 Jun
2 wk after
Drumsticks
Pycnosorus globosus
Season too short
24 Feb – 10 Mar
10-12 wk
19 May
1 wk after
Sunflower
Helianthus annuus
Fleece
21 – 28 Apr
8 Jun
3-4 wk
19 May
29 Jun
1 wk after
22 May
19 Jun
2 wk after
China aster
Callistephus chinensis
3 – 17 Apr
22 May
6-8 wk
29 May
3 Jul
3 wk after
21 Jun
23 Jun
6 wk after
Annual phlox
Phlox drummondii
Greenhouse
14 – 28 Mar
19 Apr
6-8 wk
9 May
31 May
0 wk
22 May
2 wk after
Hollyhock
Alcea rosea
14 – 28 Mar
6-8 wk
9 May
0 wk
22 May
2 wk after
Alpine delphinium
Delphinium elatum
14 Feb – 14 Mar
14 Apr
8-12 wk
9 May
9 Jun
0 wk
3 Jun
4 wk after
African marigold
Tagetes erecta
Greenhouse
16 – 30 Mar
19 Apr
6-8 wk
11 May
31 May
0 wk
Black-eyed Susan
Rudbeckia hirta
19 Mar – 2 Apr
12 May
6-8 wk
14 May
23 Jun
1 wk after
21 Jun
6 wk after
Wood sage
Salvia nemorosa
28 Feb – 14 Mar
4 Apr
8-10 wk
9 May
30 May
0 wk
3 Jun
4 wk after
Black-eyed susan vine
Thunbergia alata
Season too short
10 Mar – 7 Apr
6-10 wk
19 May
1 wk after
California goldenpoppy
Eschscholzia californica
9 May
9 Jul
0 wk
10 May
29 Jun
0 wk
Painted tongue
Salpiglossis sinuata
Fleece
10 – 24 Mar
1 May
8-10 wk
19 May
26 Jun
1 wk after
Water forget-me-not
Myosotis scorpioides
14 – 28 Mar
28 Apr
6-8 wk
9 May
9 Jun
0 wk
22 May
30 May
2 wk after