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Method
Rel. frost
Last spring frost (0°C) 28 May Frost 3 of 4 years · 20 years of data
Frost-free season 89 days 28 May – 25 Aug
Probability that frost is over

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

Herbs

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