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Method
Rel. frost
Last spring frost (0°C) 17 Jun Frost 1 of 4 years · 20 years of data
Frost-free season 90 days 17 Jun – 15 Sep
Probability that frost is over

75% = 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)
29 Apr – 13 May
14 Jun
5-7 wk
17 Jun
19 Jul
0 wk
21 Jun
9 Jul
1 wk after
Broccoli
Brassica oleracea (Italica-gruppen)
6 – 20 May
26 Jun
4-6 wk
17 Jun
24 Jul
0 wk
21 Jun
14 Jul
1 wk after
Chili pepper
Capsicum annuum
Season too short
31 Mar – 28 Apr
8-12 wk
23 Jun
1 wk after
Curly Kale
Brassica oleracea (Curly Kale-gruppen)
29 Apr – 13 May
9 Jun
5-7 wk
17 Jun
14 Jul
0 wk
17 Jun
4 Jul
0 wk
Garden cucumber
Cucumis sativus
Season too short
26 May – 2 Jun
3-4 wk
23 Jun
1 wk after
Florence Fennel
Foeniculum vulgare
Fleece
26 May – 2 Jun
5 Jun
4-5 wk
30 Jun
3 Jul
2 wk after
22 Jul
5 wk after
Butter bean
Phaseolus lunatus
Season too short
28 Jun – 5 Jul
3-4 wk
26 Jul
6 wk after
Onion
Allium cepa (Cepa-gruppen)
Season too short
25 Mar – 22 Apr
30 Mar
8-12 wk
17 Jun
0 wk
17 Jun
0 wk
Onion (sets)
Allium cepa (Cepa-gruppen)
Fleece
13 Jun
1 wk before
13 Jun
1 wk before
Maize
Zea mays
Season too short
20 – 27 May
3-4 wk
17 Jun
0 wk
Swiss Chard
Beta vulgaris (Flavescens-gruppen)
22 – 29 May
2 Jul
3-4 wk
19 Jun
23 Jul
0 wk
8 Jul
13 Jul
3 wk after
Carrot
Daucus carota subsp. sativus var. sativus
17 Jun
4 Jul
0 wk
17 Jun
24 Jun
0 wk
Palm Kale
Brassica oleracea (Palm Kale-gruppen)
29 Apr – 13 May
9 Jun
5-7 wk
17 Jun
14 Jul
0 wk
17 Jun
4 Jul
0 wk
Potato
Solanum tuberosum
Fleece
10 – 24 May
20 May
4-6 wk
21 Jun
1 wk after
21 Jun
1 wk after
Ornamental Kale
Brassica oleracea (Ornamental-gruppen)
29 Apr – 13 May
19 Jun
5-7 wk
17 Jun
24 Jul
0 wk
21 Jun
14 Jul
1 wk after
Pumpkin
Cucurbita pepo
Greenhouse
26 May – 2 Jun
18 Jun
3-4 wk
23 Jun
9 Jul
1 wk after
Beetroot
Beta vulgaris (Conditiva-gruppen)
Fleece
20 – 27 May
22 May
3-4 wk
17 Jun
0 wk
27 Jun
1 wk after
Red Cabbage
Brassica oleracea (Red Cabbage-gruppen)
6 – 20 May
21 Jun
4-6 wk
17 Jun
19 Jul
0 wk
Lettuce
Lactuca sativa
20 – 27 May
8 Jul
3-4 wk
17 Jun
29 Jul
0 wk
21 Jun
19 Jul
1 wk after
Savoy Cabbage
Brassica oleracea (Savoy Cabbage-gruppen)
6 – 20 May
21 Jun
4-6 wk
17 Jun
19 Jul
0 wk
Shallot (bulbs)
Allium cepa (Aggregatum-gruppen)
20 May – 3 Jun
2-4 wk
17 Jun
0 wk
17 Jun
0 wk
Shallot (sets)
Allium cepa (Aggregatum-gruppen)
Fleece
13 Jun
1 wk before
13 Jun
1 wk before
Spinach
Spinacia oleracea
20 – 27 May
23 Jul
3-4 wk
17 Jun
13 Aug
0 wk
13 Jun
3 Aug
1 wk before
Sweet potato
Ipomoea batatas
19 Jul – 2 Aug
4-6 wk
30 Aug
11 wk after
Garden tomato
Solanum lycopersicum
Season too short
22 Apr – 6 May
6-8 wk
17 Jun
0 wk
Tomatillo
Physalis ixocarpa
Common Bean
Phaseolus vulgaris
Greenhouse
20 May – 3 Jun
20 Jun
2-4 wk
17 Jun
4 Jul
0 wk
8 Jul
3 wk after
White Cabbage
Brassica oleracea (White Cabbage-gruppen)
6 – 20 May
21 Jun
4-6 wk
17 Jun
19 Jul
0 wk
Garden pea
Pisum sativum
20 – 27 May
23 Jun
3-4 wk
17 Jun
14 Jul
0 wk
21 Jun
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
Greenhouse
12 – 26 May
27 May
4-6 wk
23 Jun
24 Jun
1 wk after
Lemon balm
Melissa officinalis
8 – 22 Apr
19 May
8-10 wk
17 Jun
14 Jul
0 wk
22 Jul
5 wk after
Dill
Anethum graveolens
21 Jun
23 Jul
1 wk after
Wild chives
Allium schoenoprasum
22 Apr – 6 May
2 Jun
6-8 wk
17 Jun
14 Jul
0 wk
21 Jun
4 Jul
1 wk after
Spearmint
Mentha spicata
25 Mar – 22 Apr
19 May
8-12 wk
17 Jun
14 Jul
0 wk
22 Jul
5 wk after
Coriander
Coriandrum sativum
17 Jun
12 Aug
0 wk
8 Jul
2 Aug
3 wk after
Garden sage
Salvia officinalis
10 – 24 Apr
4 May
8-10 wk
19 Jun
29 Jun
0 wk
Common thyme
Thymus vulgaris
8 – 22 Apr
9 May
8-10 wk
17 Jun
4 Jul
0 wk
Oregano
Origanum vulgare
22 Apr – 6 May
23 May
6-8 wk
17 Jun
4 Jul
0 wk
22 Jul
5 wk after
Parsley
Petroselinum crispum
22 Apr – 6 May
23 May
6-8 wk
17 Jun
4 Jul
0 wk
21 Jun
24 Jun
1 wk after
Rosemary
Salvia rosmarinus
13 Mar – 10 Apr
31 Mar
10-14 wk
19 Jun
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
Greenhouse
26 May – 2 Jun
3 Jun
3-4 wk
23 Jun
24 Jun
1 wk after
Cornflower
Centaurea cyanus
17 Jun
14 Jul
0 wk
21 Jun
4 Jul
1 wk after
Statice
Limonium sinuatum
Fleece
14 – 28 Apr
24 Apr
8-10 wk
23 Jun
1 wk after
Sweet William
Dianthus barbatus
22 Apr – 6 May
6-8 wk
17 Jun
0 wk
3 Jul
2 wk after
Snow-on-the-mountain
Euphorbia marginata
Fleece
28 Apr – 12 May
8 May
6-8 wk
23 Jun
1 wk after
15 Aug
8 wk after
Pinnate dahlia
Dahlia × pinnata
3 – 17 May
3 May
6-8 wk
28 Jun
2 wk after
Pinnate dahlia (tubers)
Dahlia × pinnata
Greenhouse
2 – 30 May
6 Jun
4-8 wk
27 Jun
4 Jul
1 wk after
27 Jun
1 wk after
Foxglove
Digitalis purpurea
8 – 22 Apr
8-10 wk
17 Jun
0 wk
8 Jul
3 wk after
Busy lizzie
Impatiens walleriana
Fleece
7 Apr – 5 May
14 Jun
8-12 wk
30 Jun
9 Aug
2 wk after
Creeping zinnia
Sanvitalia procumbens
Fleece
28 Apr – 12 May
18 May
6-8 wk
23 Jun
29 Jun
1 wk after
Hyacinth bean
Dolichos lablab
Season too short
19 May – 2 Jun
4-6 wk
30 Jun
2 wk after
Chinese lantern
Physalis alkekengi
10 – 24 Apr
18 Apr
8-10 wk
19 Jun
0 wk
Love in a mist
Nigella damascena
17 Jun
29 Jun
0 wk
21 Jun
1 wk after
Strawflower
Xerochrysum bracteatum
Fleece
28 Apr – 12 May
28 Apr
6-8 wk
23 Jun
1 wk after
15 Aug
8 wk after
Purple-top vervain
Verbena bonariensis
27 Mar – 24 Apr
18 Apr
8-12 wk
19 Jun
0 wk
Cardoon
Cynara cardunculus
Greenhouse
25 Mar – 22 Apr
8-12 wk
17 Jun
0 wk
Regal-foxtail
Ptilotus nobilis
Greenhouse
31 Mar – 28 Apr
19 Apr
8-12 wk
23 Jun
1 wk after
Globe amaranth
Gomphrena globosa
Greenhouse
28 Apr – 12 May
3 May
6-8 wk
23 Jun
1 wk after
Corn poppy
Papaver rhoeas
17 Jun
14 Jul
0 wk
21 Jun
4 Jul
1 wk after
Snapdragon
Antirrhinum majus
25 Mar – 22 Apr
9 May
8-12 wk
17 Jun
4 Jul
0 wk
3 Jul
2 wk after
Flossflower
Ageratum houstonianum
Fleece
21 Apr – 5 May
4 May
8-10 wk
30 Jun
2 wk after
Sweet pea
Lathyrus odoratus
22 Apr – 13 May
30 May
5-8 wk
17 Jun
4 Jul
0 wk
Stock
Matthiola incana
22 Apr – 6 May
2 Jun
6-8 wk
17 Jun
14 Jul
0 wk
8 Jul
3 wk after
Wormwood
Artemisia absinthium
22 Apr – 6 May
3 May
6-8 wk
17 Jun
0 wk
8 Jul
3 wk after
Mexican sunflower
Tithonia rotundifolia
Greenhouse
12 – 26 May
12 May
4-6 wk
23 Jun
1 wk after
Garden pansy
Viola × wittrockiana
8 – 22 Apr
19 May
8-10 wk
17 Jun
14 Jul
0 wk
3 Jul
4 Jul
2 wk after
Petunia
Petunia
Fleece
31 Mar – 28 Apr
24 Apr
8-12 wk
23 Jun
1 wk after
Sweet Scabious
Scabiosa atropurpurea
24 Apr – 8 May
2 May
6-8 wk
19 Jun
0 wk
5 Aug
7 wk after
Common zinnia
Zinnia elegans
Fleece
12 – 26 May
27 May
4-6 wk
23 Jun
24 Jun
1 wk after
Common morning glory
Ipomoea purpurea
Greenhouse
19 May – 2 Jun
3 Jun
3-5 wk
23 Jun
24 Jun
1 wk after
Garden cosmos
Cosmos bipinnatus
Fleece
12 – 26 May
31 May
4-6 wk
23 Jun
28 Jun
1 wk after
22 Jul
5 wk after
Scarlet milkweed
Asclepias curassavica
Greenhouse
7 Apr – 5 May
19 May
8-12 wk
30 Jun
14 Jul
2 wk after
Bee balm
Monarda didyma
25 Mar – 22 Apr
19 Apr
8-12 wk
17 Jun
0 wk
22 Jul
5 wk after
Yarrow
Achillea millefolium
22 Apr – 6 May
6-8 wk
17 Jun
0 wk
8 Jul
3 wk after
Safflower
Carthamus tinctorius
17 Jun
0 wk
21 Jun
1 wk after
Iceland poppy
Papaver nudicaule
Season too short
22 Apr – 6 May
23 May
6-8 wk
17 Jun
4 Jul
0 wk
30 May
24 Jun
3 wk before
Bishop's flower
Ammi majus
6 – 20 May
6 Jun
4-6 wk
17 Jun
4 Jul
0 wk
8 Jul
3 wk after
Drumsticks
Pycnosorus globosus
Greenhouse
31 Mar – 14 Apr
10-12 wk
23 Jun
1 wk after
Sunflower
Helianthus annuus
2 – 9 Jun
8 Jun
3-4 wk
30 Jun
2 wk after
22 Jul
5 wk after
China aster
Callistephus chinensis
5 – 19 May
28 May
6-8 wk
30 Jun
9 Jul
2 wk after
5 Aug
7 wk after
Annual phlox
Phlox drummondii
Fleece
22 Apr – 6 May
18 May
6-8 wk
17 Jun
29 Jun
0 wk
22 Jul
5 wk after
Hollyhock
Alcea rosea
22 Apr – 6 May
6-8 wk
17 Jun
0 wk
8 Jul
3 wk after
Alpine delphinium
Delphinium elatum
25 Mar – 22 Apr
19 Apr
8-12 wk
17 Jun
0 wk
22 Jul
5 wk after
African marigold
Tagetes erecta
Fleece
28 Apr – 12 May
18 May
6-8 wk
23 Jun
29 Jun
1 wk after
Black-eyed Susan
Rudbeckia hirta
24 Apr – 8 May
18 May
6-8 wk
19 Jun
29 Jun
0 wk
5 Aug
7 wk after
Wood sage
Salvia nemorosa
8 – 22 Apr
9 Apr
8-10 wk
17 Jun
0 wk
22 Jul
5 wk after
Black-eyed susan vine
Thunbergia alata
Greenhouse
14 Apr – 12 May
13 May
6-10 wk
23 Jun
24 Jun
1 wk after
California goldenpoppy
Eschscholzia californica
17 Jun
14 Jul
0 wk
21 Jun
4 Jul
1 wk after
Painted tongue
Salpiglossis sinuata
Fleece
14 – 28 Apr
8 May
8-10 wk
23 Jun
3 Jul
1 wk after
Water forget-me-not
Myosotis scorpioides
22 Apr – 6 May
3 May
6-8 wk
17 Jun
0 wk
8 Jul
3 wk after