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Rel. frost
Last spring frost (0°C) 28 Apr Frost 9 of 10 years · 20 years of data
Frost-free season 138 days 28 Apr – 13 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)
10 – 24 Mar
19 Jun
5-7 wk
28 Apr
24 Jul
0 wk
22 Apr
14 Jul
1 wk before
Broccoli
Brassica oleracea (Italica-gruppen)
17 – 31 Mar
1 Jul
4-6 wk
28 Apr
29 Jul
0 wk
22 Apr
19 Jul
1 wk before
Chili pepper
Capsicum annuum
Season too short
16 Feb – 16 Mar
8-12 wk
11 May
2 wk after
Curly Kale
Brassica oleracea (Curly Kale-gruppen)
10 – 24 Mar
14 Jun
5-7 wk
28 Apr
19 Jul
0 wk
15 Apr
9 Jul
2 wk before
Garden cucumber
Cucumis sativus
Season too short
13 – 20 Apr
3-4 wk
11 May
2 wk after
Florence Fennel
Foeniculum vulgare
29 Apr – 6 May
20 May
4-5 wk
3 Jun
17 Jun
5 wk after
8 Jun
6 wk after
Butter bean
Phaseolus lunatus
Season too short
16 – 23 May
3-4 wk
13 Jun
7 wk after
Onion
Allium cepa (Cepa-gruppen)
3 Feb – 3 Mar
1 Apr
8-12 wk
28 Apr
27 May
0 wk
11 May
17 May
2 wk after
Onion (sets)
Allium cepa (Cepa-gruppen)
22 Apr
16 Jun
1 wk before
22 Apr
6 Jun
1 wk before
Maize
Zea mays
Season too short
31 Mar – 7 Apr
3-4 wk
28 Apr
0 wk
Swiss Chard
Beta vulgaris (Flavescens-gruppen)
7 – 14 Apr
27 Jun
3-4 wk
5 May
18 Jul
1 wk after
11 May
8 Jul
2 wk after
Carrot
Daucus carota subsp. sativus var. sativus
28 Apr
9 Jul
0 wk
15 Apr
29 Jun
2 wk before
Palm Kale
Brassica oleracea (Palm Kale-gruppen)
10 – 24 Mar
14 Jun
5-7 wk
28 Apr
19 Jul
0 wk
15 Apr
9 Jul
2 wk before
Potato
Solanum tuberosum
22 Mar – 5 Apr
29 May
4-6 wk
3 May
26 Jun
1 wk after
3 May
16 Jun
1 wk after
Ornamental Kale
Brassica oleracea (Ornamental-gruppen)
10 – 24 Mar
24 Jun
5-7 wk
28 Apr
29 Jul
0 wk
22 Apr
19 Jul
1 wk before
Pumpkin
Cucurbita pepo
Greenhouse
13 – 20 Apr
17 May
3-4 wk
11 May
7 Jun
2 wk after
Beetroot
Beta vulgaris (Conditiva-gruppen)
7 – 14 Apr
9 Jun
3-4 wk
5 May
30 Jun
1 wk after
11 May
20 Jun
2 wk after
Red Cabbage
Brassica oleracea (Red Cabbage-gruppen)
17 – 31 Mar
26 Jun
4-6 wk
28 Apr
24 Jul
0 wk
Lettuce
Lactuca sativa
31 Mar – 7 Apr
13 Jul
3-4 wk
28 Apr
3 Aug
0 wk
22 Apr
24 Jul
1 wk before
Savoy Cabbage
Brassica oleracea (Savoy Cabbage-gruppen)
17 – 31 Mar
26 Jun
4-6 wk
28 Apr
24 Jul
0 wk
Shallot (bulbs)
Allium cepa (Aggregatum-gruppen)
18 Mar – 1 Apr
3 Jun
2-4 wk
15 Apr
17 Jun
2 wk before
15 Apr
7 Jun
2 wk before
Shallot (sets)
Allium cepa (Aggregatum-gruppen)
22 Apr
16 Jun
1 wk before
22 Apr
6 Jun
1 wk before
Spinach
Spinacia oleracea
31 Mar – 7 Apr
28 Jul
3-4 wk
28 Apr
18 Aug
0 wk
8 Apr
8 Aug
3 wk before
Sweet potato
Ipomoea batatas
30 May – 13 Jun
4-6 wk
11 Jul
11 wk after
Garden tomato
Solanum lycopersicum
Season too short
3 – 17 Mar
6-8 wk
28 Apr
0 wk
Tomatillo
Physalis ixocarpa
Common Bean
Phaseolus vulgaris
Greenhouse
31 Mar – 14 Apr
19 May
2-4 wk
28 Apr
2 Jun
0 wk
11 May
23 May
2 wk after
White Cabbage
Brassica oleracea (White Cabbage-gruppen)
17 – 31 Mar
26 Jun
4-6 wk
28 Apr
24 Jul
0 wk
Garden pea
Pisum sativum
31 Mar – 7 Apr
28 Jun
3-4 wk
28 Apr
19 Jul
0 wk
22 Apr
9 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
30 Mar – 13 Apr
25 Apr
4-6 wk
11 May
23 May
2 wk after
Lemon balm
Melissa officinalis
17 Feb – 3 Mar
24 May
8-10 wk
28 Apr
19 Jul
0 wk
24 May
9 Jul
4 wk after
Dill
Anethum graveolens
22 Apr
18 Jul
1 wk before
Wild chives
Allium schoenoprasum
3 – 17 Mar
7 Jun
6-8 wk
28 Apr
19 Jul
0 wk
22 Apr
9 Jul
1 wk before
Spearmint
Mentha spicata
3 Feb – 3 Mar
24 May
8-12 wk
28 Apr
19 Jul
0 wk
24 May
9 Jul
4 wk after
Coriander
Coriandrum sativum
28 Apr
7 Aug
0 wk
11 May
28 Jul
2 wk after
Garden sage
Salvia officinalis
24 Feb – 10 Mar
9 May
8-10 wk
5 May
4 Jul
1 wk after
Common thyme
Thymus vulgaris
17 Feb – 3 Mar
14 May
8-10 wk
28 Apr
9 Jul
0 wk
Oregano
Origanum vulgare
3 – 17 Mar
28 May
6-8 wk
28 Apr
9 Jul
0 wk
24 May
29 Jun
4 wk after
Parsley
Petroselinum crispum
3 – 17 Mar
28 May
6-8 wk
28 Apr
9 Jul
0 wk
22 Apr
29 Jun
1 wk before
Rosemary
Salvia rosmarinus
27 Jan – 24 Feb
20 Mar
10-14 wk
5 May
29 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
Greenhouse
13 – 20 Apr
2 May
3-4 wk
11 May
23 May
2 wk after
Cornflower
Centaurea cyanus
28 Apr
19 Jul
0 wk
22 Apr
9 Jul
1 wk before
Statice
Limonium sinuatum
Fleece
2 – 16 Mar
25 Mar
8-10 wk
11 May
20 May
2 wk after
Sweet William
Dianthus barbatus
3 – 17 Mar
6-8 wk
28 Apr
0 wk
3 May
1 wk after
Snow-on-the-mountain
Euphorbia marginata
Fleece
16 – 30 Mar
8 Apr
6-8 wk
11 May
20 May
2 wk after
13 Jun
7 wk after
Pinnate dahlia
Dahlia × pinnata
18 Mar – 1 Apr
1 Apr
6-8 wk
13 May
13 May
2 wk after
Pinnate dahlia (tubers)
Dahlia × pinnata
29 Mar – 26 Apr
15 Apr
4-8 wk
24 May
4 wk after
24 May
4 wk after
Foxglove
Digitalis purpurea
17 Feb – 3 Mar
8-10 wk
28 Apr
0 wk
11 May
2 wk after
Busy lizzie
Impatiens walleriana
Fleece
25 Feb – 25 Mar
13 May
8-12 wk
20 May
8 Jul
3 wk after
Creeping zinnia
Sanvitalia procumbens
Fleece
16 – 30 Mar
18 Apr
6-8 wk
11 May
30 May
2 wk after
Hyacinth bean
Dolichos lablab
Season too short
8 – 22 Apr
4-6 wk
20 May
3 wk after
Chinese lantern
Physalis alkekengi
24 Feb – 10 Mar
13 Apr
8-10 wk
5 May
8 Jun
1 wk after
Love in a mist
Nigella damascena
28 Apr
4 Jul
0 wk
22 Apr
24 Jun
1 wk before
Strawflower
Xerochrysum bracteatum
Fleece
16 – 30 Mar
29 Mar
6-8 wk
11 May
2 wk after
13 Jun
7 wk after
Purple-top vervain
Verbena bonariensis
10 Feb – 10 Mar
13 Apr
8-12 wk
5 May
8 Jun
1 wk after
Cardoon
Cynara cardunculus
Fleece
16 Feb – 16 Mar
25 Mar
8-12 wk
11 May
20 May
2 wk after
Regal-foxtail
Ptilotus nobilis
Greenhouse
16 Feb – 16 Mar
18 Mar
8-12 wk
11 May
13 May
2 wk after
Globe amaranth
Gomphrena globosa
Greenhouse
16 – 30 Mar
1 Apr
6-8 wk
11 May
13 May
2 wk after
Corn poppy
Papaver rhoeas
28 Apr
19 Jul
0 wk
22 Apr
9 Jul
1 wk before
Snapdragon
Antirrhinum majus
3 Feb – 3 Mar
14 May
8-12 wk
28 Apr
9 Jul
0 wk
3 May
29 Jun
1 wk after
Flossflower
Ageratum houstonianum
Fleece
11 – 25 Mar
4 Apr
8-10 wk
20 May
30 May
3 wk after
Sweet pea
Lathyrus odoratus
3 – 24 Mar
4 Jun
5-8 wk
28 Apr
9 Jul
0 wk
Stock
Matthiola incana
3 – 17 Mar
7 Jun
6-8 wk
28 Apr
19 Jul
0 wk
11 May
9 Jul
2 wk after
Wormwood
Artemisia absinthium
3 – 17 Mar
8 May
6-8 wk
28 Apr
19 Jun
0 wk
11 May
9 Jun
2 wk after
Mexican sunflower
Tithonia rotundifolia
Greenhouse
30 Mar – 13 Apr
10 Apr
4-6 wk
11 May
2 wk after
Garden pansy
Viola × wittrockiana
17 Feb – 3 Mar
24 May
8-10 wk
28 Apr
19 Jul
0 wk
3 May
9 Jul
1 wk after
Petunia
Petunia
Fleece
16 Feb – 16 Mar
25 Mar
8-12 wk
11 May
20 May
2 wk after
Sweet Scabious
Scabiosa atropurpurea
10 – 24 Mar
27 Apr
6-8 wk
5 May
8 Jun
1 wk after
8 Jun
6 wk after
Common zinnia
Zinnia elegans
Fleece
30 Mar – 13 Apr
25 Apr
4-6 wk
11 May
23 May
2 wk after
Common morning glory
Ipomoea purpurea
Greenhouse
6 – 20 Apr
2 May
3-5 wk
11 May
23 May
2 wk after
Garden cosmos
Cosmos bipinnatus
Fleece
30 Mar – 13 Apr
29 Apr
4-6 wk
11 May
27 May
2 wk after
24 May
4 wk after
Scarlet milkweed
Asclepias curassavica
Greenhouse
25 Feb – 25 Mar
17 Apr
8-12 wk
20 May
12 Jun
3 wk after
Bee balm
Monarda didyma
3 Feb – 3 Mar
24 Apr
8-12 wk
28 Apr
19 Jun
0 wk
24 May
9 Jun
4 wk after
Yarrow
Achillea millefolium
3 – 17 Mar
8 Apr
6-8 wk
28 Apr
20 May
0 wk
11 May
2 wk after
Safflower
Carthamus tinctorius
28 Apr
19 Jun
0 wk
22 Apr
9 Jun
1 wk before
Iceland poppy
Papaver nudicaule
Season too short
3 – 17 Mar
28 May
6-8 wk
28 Apr
9 Jul
0 wk
13 Mar
29 Jun
7 wk before
Bishop's flower
Ammi majus
17 – 31 Mar
11 Jun
4-6 wk
28 Apr
9 Jul
0 wk
11 May
29 Jun
2 wk after
Drumsticks
Pycnosorus globosus
Greenhouse
16 Feb – 2 Mar
26 Feb
10-12 wk
11 May
2 wk after
Sunflower
Helianthus annuus
22 – 29 Apr
28 May
3-4 wk
20 May
18 Jun
3 wk after
24 May
8 Jun
4 wk after
China aster
Callistephus chinensis
25 Mar – 8 Apr
17 May
6-8 wk
20 May
28 Jun
3 wk after
8 Jun
18 Jun
6 wk after
Annual phlox
Phlox drummondii
16 – 30 Mar
27 Mar
6-8 wk
11 May
2 wk after
8 Jun
6 wk after
Hollyhock
Alcea rosea
3 – 17 Mar
6-8 wk
28 Apr
0 wk
11 May
2 wk after
Alpine delphinium
Delphinium elatum
3 Feb – 3 Mar
24 Apr
8-12 wk
28 Apr
19 Jun
0 wk
24 May
9 Jun
4 wk after
African marigold
Tagetes erecta
Fleece
16 – 30 Mar
18 Apr
6-8 wk
11 May
30 May
2 wk after
Black-eyed Susan
Rudbeckia hirta
10 – 24 Mar
7 May
6-8 wk
5 May
18 Jun
1 wk after
8 Jun
8 Jun
6 wk after
Wood sage
Salvia nemorosa
17 Feb – 3 Mar
14 Apr
8-10 wk
28 Apr
9 Jun
0 wk
24 May
30 May
4 wk after
Black-eyed susan vine
Thunbergia alata
Greenhouse
2 – 30 Mar
11 Apr
6-10 wk
11 May
23 May
2 wk after
California goldenpoppy
Eschscholzia californica
28 Apr
16 Jul
0 wk
22 Apr
6 Jul
1 wk before
Painted tongue
Salpiglossis sinuata
11 – 25 Mar
22 Apr
8-10 wk
20 May
17 Jun
3 wk after
Water forget-me-not
Myosotis scorpioides
3 – 17 Mar
8 May
6-8 wk
28 Apr
19 Jun
0 wk
11 May
9 Jun
2 wk after