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Rel. frost
Last spring frost (0°C) 29 Apr Frost 9 of 10 years · 20 years of data
Frost-free season 138 days 29 Apr – 14 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)
11 – 25 Mar
17 Jun
5-7 wk
29 Apr
22 Jul
0 wk
22 Apr
12 Jul
1 wk before
Broccoli
Brassica oleracea (Italica-gruppen)
18 Mar – 1 Apr
29 Jun
4-6 wk
29 Apr
27 Jul
0 wk
22 Apr
17 Jul
1 wk before
Chili pepper
Capsicum annuum
Season too short
17 Feb – 17 Mar
8-12 wk
12 May
2 wk after
Curly Kale
Brassica oleracea (Curly Kale-gruppen)
11 – 25 Mar
12 Jun
5-7 wk
29 Apr
17 Jul
0 wk
17 Apr
7 Jul
2 wk before
Garden cucumber
Cucumis sativus
Season too short
14 – 21 Apr
3-4 wk
12 May
2 wk after
Florence Fennel
Foeniculum vulgare
30 Apr – 7 May
21 May
4-5 wk
4 Jun
18 Jun
5 wk after
4 Jun
8 Jun
5 wk after
Butter bean
Phaseolus lunatus
Season too short
17 – 24 May
3-4 wk
14 Jun
7 wk after
Onion
Allium cepa (Cepa-gruppen)
4 Feb – 4 Mar
28 Mar
8-12 wk
29 Apr
23 May
0 wk
9 May
13 May
1 wk after
Onion (sets)
Allium cepa (Cepa-gruppen)
22 Apr
12 Jun
1 wk before
22 Apr
2 Jun
1 wk before
Maize
Zea mays
Season too short
1 – 8 Apr
3-4 wk
29 Apr
0 wk
Swiss Chard
Beta vulgaris (Flavescens-gruppen)
8 – 15 Apr
2 Jul
3-4 wk
6 May
23 Jul
1 wk after
9 May
13 Jul
1 wk after
Carrot
Daucus carota subsp. sativus var. sativus
29 Apr
7 Jul
0 wk
17 Apr
27 Jun
2 wk before
Palm Kale
Brassica oleracea (Palm Kale-gruppen)
11 – 25 Mar
12 Jun
5-7 wk
29 Apr
17 Jul
0 wk
17 Apr
7 Jul
2 wk before
Potato
Solanum tuberosum
23 Mar – 6 Apr
27 May
4-6 wk
4 May
24 Jun
1 wk after
4 May
14 Jun
1 wk after
Ornamental Kale
Brassica oleracea (Ornamental-gruppen)
11 – 25 Mar
22 Jun
5-7 wk
29 Apr
27 Jul
0 wk
22 Apr
17 Jul
1 wk before
Pumpkin
Cucurbita pepo
Greenhouse
14 – 21 Apr
10 May
3-4 wk
12 May
31 May
2 wk after
Beetroot
Beta vulgaris (Conditiva-gruppen)
8 – 15 Apr
9 Jun
3-4 wk
6 May
30 Jun
1 wk after
9 May
20 Jun
1 wk after
Red Cabbage
Brassica oleracea (Red Cabbage-gruppen)
18 Mar – 1 Apr
24 Jun
4-6 wk
29 Apr
22 Jul
0 wk
Lettuce
Lactuca sativa
1 – 8 Apr
11 Jul
3-4 wk
29 Apr
1 Aug
0 wk
22 Apr
22 Jul
1 wk before
Savoy Cabbage
Brassica oleracea (Savoy Cabbage-gruppen)
18 Mar – 1 Apr
24 Jun
4-6 wk
29 Apr
22 Jul
0 wk
Shallot (bulbs)
Allium cepa (Aggregatum-gruppen)
20 Mar – 3 Apr
31 May
2-4 wk
17 Apr
14 Jun
2 wk before
17 Apr
4 Jun
2 wk before
Shallot (sets)
Allium cepa (Aggregatum-gruppen)
22 Apr
12 Jun
1 wk before
22 Apr
2 Jun
1 wk before
Spinach
Spinacia oleracea
1 – 8 Apr
26 Jul
3-4 wk
29 Apr
16 Aug
0 wk
11 Apr
6 Aug
3 wk before
Sweet potato
Ipomoea batatas
26 May – 9 Jun
4-6 wk
7 Jul
10 wk after
Garden tomato
Solanum lycopersicum
Season too short
4 – 18 Mar
5 Mar
6-8 wk
29 Apr
0 wk
Tomatillo
Physalis ixocarpa
Common Bean
Phaseolus vulgaris
Greenhouse
1 – 15 Apr
12 May
2-4 wk
29 Apr
26 May
0 wk
9 May
16 May
1 wk after
White Cabbage
Brassica oleracea (White Cabbage-gruppen)
18 Mar – 1 Apr
24 Jun
4-6 wk
29 Apr
22 Jul
0 wk
Garden pea
Pisum sativum
1 – 8 Apr
26 Jun
3-4 wk
29 Apr
17 Jul
0 wk
22 Apr
7 Jul
1 wk before

Herbs

Plant Sow indoors Transplant Direct sow
Earliest Latest Growing time Earliest Latest Rel. frost Earliest Latest Rel. frost
Basil
Ocimum basilicum
Greenhouse
31 Mar – 14 Apr
18 Apr
4-6 wk
12 May
16 May
2 wk after
Lemon balm
Melissa officinalis
18 Feb – 4 Mar
22 May
8-10 wk
29 Apr
17 Jul
0 wk
20 May
7 Jul
3 wk after
Dill
Anethum graveolens
22 Apr
23 Jul
1 wk before
Wild chives
Allium schoenoprasum
4 – 18 Mar
5 Jun
6-8 wk
29 Apr
17 Jul
0 wk
22 Apr
7 Jul
1 wk before
Spearmint
Mentha spicata
4 Feb – 4 Mar
22 May
8-12 wk
29 Apr
17 Jul
0 wk
20 May
7 Jul
3 wk after
Coriander
Coriandrum sativum
29 Apr
12 Aug
0 wk
9 May
2 Aug
1 wk after
Garden sage
Salvia officinalis
25 Feb – 11 Mar
7 May
8-10 wk
6 May
2 Jul
1 wk after
Common thyme
Thymus vulgaris
18 Feb – 4 Mar
12 May
8-10 wk
29 Apr
7 Jul
0 wk
Oregano
Origanum vulgare
4 – 18 Mar
26 May
6-8 wk
29 Apr
7 Jul
0 wk
20 May
27 Jun
3 wk after
Parsley
Petroselinum crispum
4 – 18 Mar
26 May
6-8 wk
29 Apr
7 Jul
0 wk
22 Apr
27 Jun
1 wk before
Rosemary
Salvia rosmarinus
28 Jan – 25 Feb
27 Mar
10-14 wk
6 May
5 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
Greenhouse
14 – 21 Apr
25 Apr
3-4 wk
12 May
16 May
2 wk after
Cornflower
Centaurea cyanus
29 Apr
17 Jul
0 wk
22 Apr
7 Jul
1 wk before
Statice
Limonium sinuatum
Fleece
3 – 17 Mar
18 Mar
8-10 wk
12 May
13 May
2 wk after
Sweet William
Dianthus barbatus
4 – 18 Mar
6-8 wk
29 Apr
0 wk
4 May
1 wk after
Snow-on-the-mountain
Euphorbia marginata
Fleece
17 – 31 Mar
1 Apr
6-8 wk
12 May
13 May
2 wk after
14 Jun
7 wk after
Pinnate dahlia
Dahlia × pinnata
19 Mar – 2 Apr
25 Mar
6-8 wk
14 May
2 wk after
Pinnate dahlia (tubers)
Dahlia × pinnata
25 Mar – 22 Apr
8 Apr
4-8 wk
20 May
3 wk after
20 May
3 wk after
Foxglove
Digitalis purpurea
18 Feb – 4 Mar
8-10 wk
29 Apr
0 wk
9 May
1 wk after
Busy lizzie
Impatiens walleriana
12 Mar – 9 Apr
6 Apr
8-12 wk
4 Jun
5 wk after
Creeping zinnia
Sanvitalia procumbens
Fleece
17 – 31 Mar
11 Apr
6-8 wk
12 May
23 May
2 wk after
Hyacinth bean
Dolichos lablab
Season too short
9 – 23 Apr
4-6 wk
21 May
3 wk after
Chinese lantern
Physalis alkekengi
25 Feb – 11 Mar
18 Apr
8-10 wk
6 May
13 Jun
1 wk after
Love in a mist
Nigella damascena
29 Apr
2 Jul
0 wk
22 Apr
22 Jun
1 wk before
Strawflower
Xerochrysum bracteatum
Greenhouse
4 – 18 Mar
6 Apr
6-8 wk
29 Apr
18 May
0 wk
27 May
4 wk after
Purple-top vervain
Verbena bonariensis
11 Feb – 11 Mar
18 Apr
8-12 wk
6 May
13 Jun
1 wk after
Cardoon
Cynara cardunculus
26 Feb – 26 Mar
19 Mar
8-12 wk
21 May
3 wk after
Regal-foxtail
Ptilotus nobilis
Greenhouse
17 Feb – 17 Mar
11 Mar
8-12 wk
12 May
2 wk after
Globe amaranth
Gomphrena globosa
Greenhouse
17 – 31 Mar
25 Mar
6-8 wk
12 May
2 wk after
Corn poppy
Papaver rhoeas
29 Apr
17 Jul
0 wk
22 Apr
7 Jul
1 wk before
Snapdragon
Antirrhinum majus
4 Feb – 4 Mar
12 May
8-12 wk
29 Apr
7 Jul
0 wk
4 May
27 Jun
1 wk after
Flossflower
Ageratum houstonianum
Fleece
12 – 26 Mar
28 Mar
8-10 wk
21 May
23 May
3 wk after
Sweet pea
Lathyrus odoratus
4 – 25 Mar
2 Jun
5-8 wk
29 Apr
7 Jul
0 wk
Stock
Matthiola incana
4 – 18 Mar
5 Jun
6-8 wk
29 Apr
17 Jul
0 wk
9 May
7 Jul
1 wk after
Wormwood
Artemisia absinthium
4 – 18 Mar
6 May
6-8 wk
29 Apr
17 Jun
0 wk
9 May
7 Jun
1 wk after
Mexican sunflower
Tithonia rotundifolia
Season too short
31 Mar – 14 Apr
3 Apr
4-6 wk
12 May
2 wk after
Garden pansy
Viola × wittrockiana
18 Feb – 4 Mar
22 May
8-10 wk
29 Apr
17 Jul
0 wk
4 May
7 Jul
1 wk after
Petunia
Petunia
Fleece
17 Feb – 17 Mar
18 Mar
8-12 wk
12 May
13 May
2 wk after
Sweet Scabious
Scabiosa atropurpurea
11 – 25 Mar
2 May
6-8 wk
6 May
13 Jun
1 wk after
4 Jun
5 wk after
Common zinnia
Zinnia elegans
Fleece
31 Mar – 14 Apr
18 Apr
4-6 wk
12 May
16 May
2 wk after
Common morning glory
Ipomoea purpurea
Greenhouse
7 – 21 Apr
25 Apr
3-5 wk
12 May
16 May
2 wk after
Garden cosmos
Cosmos bipinnatus
Fleece
31 Mar – 14 Apr
25 Apr
4-6 wk
12 May
23 May
2 wk after
20 May
3 wk after
Scarlet milkweed
Asclepias curassavica
Greenhouse
26 Feb – 26 Mar
10 Apr
8-12 wk
21 May
5 Jun
3 wk after
Bee balm
Monarda didyma
4 Feb – 4 Mar
22 Apr
8-12 wk
29 Apr
17 Jun
0 wk
20 May
7 Jun
3 wk after
Yarrow
Achillea millefolium
4 – 18 Mar
6 Apr
6-8 wk
29 Apr
18 May
0 wk
9 May
1 wk after
Safflower
Carthamus tinctorius
29 Apr
17 Jun
0 wk
22 Apr
7 Jun
1 wk before
Iceland poppy
Papaver nudicaule
Season too short
4 – 18 Mar
26 May
6-8 wk
29 Apr
7 Jul
0 wk
21 Mar
27 Jun
6 wk before
Bishop's flower
Ammi majus
18 Mar – 1 Apr
9 Jun
4-6 wk
29 Apr
7 Jul
0 wk
9 May
27 Jun
1 wk after
Drumsticks
Pycnosorus globosus
Season too short
17 Feb – 3 Mar
22 Feb
10-12 wk
12 May
2 wk after
Sunflower
Helianthus annuus
23 – 30 Apr
4 Jun
3-4 wk
21 May
25 Jun
3 wk after
20 May
15 Jun
3 wk after
China aster
Callistephus chinensis
26 Mar – 9 Apr
24 May
6-8 wk
21 May
5 Jul
3 wk after
4 Jun
25 Jun
5 wk after
Annual phlox
Phlox drummondii
17 – 31 Mar
29 Mar
6-8 wk
12 May
2 wk after
4 Jun
5 wk after
Hollyhock
Alcea rosea
4 – 18 Mar
6-8 wk
29 Apr
0 wk
9 May
1 wk after
Alpine delphinium
Delphinium elatum
4 Feb – 4 Mar
22 Apr
8-12 wk
29 Apr
17 Jun
0 wk
20 May
7 Jun
3 wk after
African marigold
Tagetes erecta
Fleece
17 – 31 Mar
11 Apr
6-8 wk
12 May
23 May
2 wk after
Black-eyed Susan
Rudbeckia hirta
11 – 25 Mar
14 May
6-8 wk
6 May
25 Jun
1 wk after
4 Jun
15 Jun
5 wk after
Wood sage
Salvia nemorosa
18 Feb – 4 Mar
12 Apr
8-10 wk
29 Apr
7 Jun
0 wk
20 May
28 May
3 wk after
Black-eyed susan vine
Thunbergia alata
Greenhouse
3 – 31 Mar
4 Apr
6-10 wk
12 May
16 May
2 wk after
California goldenpoppy
Eschscholzia californica
29 Apr
17 Jul
0 wk
22 Apr
7 Jul
1 wk before
Painted tongue
Salpiglossis sinuata
12 – 26 Mar
23 Apr
8-10 wk
21 May
18 Jun
3 wk after
Water forget-me-not
Myosotis scorpioides
4 – 18 Mar
6 May
6-8 wk
29 Apr
17 Jun
0 wk
9 May
7 Jun
1 wk after