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Method
Rel. frost
Last spring frost (0°C) 24 May Frost 3 of 4 years · 20 years of data
Frost-free season 87 days 24 May – 19 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)
5 – 19 Apr
10 Jun
5-7 wk
24 May
15 Jul
0 wk
25 May
5 Jul
0 wk
Broccoli
Brassica oleracea (Italica-gruppen)
12 – 26 Apr
22 Jun
4-6 wk
24 May
20 Jul
0 wk
25 May
10 Jul
0 wk
Chili pepper
Capsicum annuum
Season too short
7 Mar – 4 Apr
8-12 wk
30 May
1 wk after
Curly Kale
Brassica oleracea (Curly Kale-gruppen)
5 – 19 Apr
5 Jun
5-7 wk
24 May
10 Jul
0 wk
24 May
30 Jun
0 wk
Garden cucumber
Cucumis sativus
Greenhouse
2 – 9 May
11 May
3-4 wk
30 May
1 Jun
1 wk after
Florence Fennel
Foeniculum vulgare
Greenhouse
25 Apr – 2 May
30 May
4-5 wk
30 May
27 Jun
1 wk after
6 Jun
17 Jun
2 wk after
Butter bean
Phaseolus lunatus
Season too short
4 – 11 Jun
3-4 wk
2 Jul
6 wk after
Onion
Allium cepa (Cepa-gruppen)
Greenhouse
1 – 29 Mar
22 Mar
8-12 wk
24 May
0 wk
24 May
0 wk
Onion (sets)
Allium cepa (Cepa-gruppen)
25 May
0 wk
25 May
0 wk
Maize
Zea mays
Greenhouse
26 Apr – 3 May
1 May
3-4 wk
24 May
0 wk
Swiss Chard
Beta vulgaris (Flavescens-gruppen)
28 Apr – 5 May
9 Jun
3-4 wk
26 May
30 Jun
0 wk
6 Jun
20 Jun
2 wk after
Carrot
Daucus carota subsp. sativus var. sativus
24 May
27 Jun
0 wk
24 May
17 Jun
0 wk
Palm Kale
Brassica oleracea (Palm Kale-gruppen)
5 – 19 Apr
5 Jun
5-7 wk
24 May
10 Jul
0 wk
24 May
30 Jun
0 wk
Potato
Solanum tuberosum
22 Apr – 6 May
26 Apr
4-6 wk
3 Jun
1 wk after
3 Jun
1 wk after
Ornamental Kale
Brassica oleracea (Ornamental-gruppen)
5 – 19 Apr
12 Jun
5-7 wk
24 May
17 Jul
0 wk
25 May
7 Jul
0 wk
Pumpkin
Cucurbita pepo
Greenhouse
2 – 9 May
3 Jun
3-4 wk
30 May
24 Jun
1 wk after
Beetroot
Beta vulgaris (Conditiva-gruppen)
28 Apr – 5 May
30 Apr
3-4 wk
26 May
0 wk
6 Jun
2 wk after
Red Cabbage
Brassica oleracea (Red Cabbage-gruppen)
12 – 26 Apr
17 Jun
4-6 wk
24 May
15 Jul
0 wk
Lettuce
Lactuca sativa
26 Apr – 3 May
1 Jul
3-4 wk
24 May
22 Jul
0 wk
25 May
12 Jul
0 wk
Savoy Cabbage
Brassica oleracea (Savoy Cabbage-gruppen)
12 – 26 Apr
17 Jun
4-6 wk
24 May
15 Jul
0 wk
Shallot (bulbs)
Allium cepa (Aggregatum-gruppen)
26 Apr – 10 May
8 May
2-4 wk
24 May
0 wk
24 May
0 wk
Shallot (sets)
Allium cepa (Aggregatum-gruppen)
25 May
0 wk
25 May
0 wk
Spinach
Spinacia oleracea
26 Apr – 3 May
19 Jul
3-4 wk
24 May
9 Aug
0 wk
21 May
30 Jul
0 wk
Sweet potato
Ipomoea batatas
18 Jun – 2 Jul
4-6 wk
30 Jul
10 wk after
Garden tomato
Solanum lycopersicum
Greenhouse
29 Mar – 12 Apr
10 Apr
6-8 wk
24 May
0 wk
Tomatillo
Physalis ixocarpa
Common Bean
Phaseolus vulgaris
Fleece
2 – 16 May
18 May
2-4 wk
30 May
1 Jun
1 wk after
18 Jun
4 wk after
White Cabbage
Brassica oleracea (White Cabbage-gruppen)
12 – 26 Apr
17 Jun
4-6 wk
24 May
15 Jul
0 wk
Garden pea
Pisum sativum
26 Apr – 3 May
16 Jun
3-4 wk
24 May
7 Jul
0 wk
25 May
27 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
Greenhouse
18 Apr – 2 May
12 May
4-6 wk
30 May
9 Jun
1 wk after
Lemon balm
Melissa officinalis
15 – 29 Mar
12 May
8-10 wk
24 May
7 Jul
0 wk
18 Jun
27 Jun
4 wk after
Dill
Anethum graveolens
25 May
30 Jun
0 wk
Wild chives
Allium schoenoprasum
29 Mar – 12 Apr
29 May
6-8 wk
24 May
10 Jul
0 wk
25 May
30 Jun
0 wk
Spearmint
Mentha spicata
1 – 29 Mar
15 May
8-12 wk
24 May
10 Jul
0 wk
18 Jun
30 Jun
4 wk after
Coriander
Coriandrum sativum
24 May
20 Jul
0 wk
6 Jun
10 Jul
2 wk after
Garden sage
Salvia officinalis
17 – 31 Mar
30 Apr
8-10 wk
26 May
25 Jun
0 wk
Common thyme
Thymus vulgaris
15 – 29 Mar
5 May
8-10 wk
24 May
30 Jun
0 wk
Oregano
Origanum vulgare
29 Mar – 12 Apr
19 May
6-8 wk
24 May
30 Jun
0 wk
18 Jun
20 Jun
4 wk after
Parsley
Petroselinum crispum
29 Mar – 12 Apr
19 May
6-8 wk
24 May
30 Jun
0 wk
25 May
20 Jun
0 wk
Rosemary
Salvia rosmarinus
17 Feb – 17 Mar
9 Mar
10-14 wk
26 May
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
2 – 9 May
19 May
3-4 wk
30 May
9 Jun
1 wk after
Cornflower
Centaurea cyanus
24 May
10 Jul
0 wk
25 May
30 Jun
0 wk
Statice
Limonium sinuatum
Fleece
21 Mar – 4 Apr
14 Apr
8-10 wk
30 May
9 Jun
1 wk after
Sweet William
Dianthus barbatus
29 Mar – 12 Apr
6-8 wk
24 May
0 wk
3 Jun
1 wk after
Snow-on-the-mountain
Euphorbia marginata
Fleece
4 – 18 Apr
28 Apr
6-8 wk
30 May
9 Jun
1 wk after
13 Jul
7 wk after
Pinnate dahlia
Dahlia × pinnata
Fleece
31 Mar – 14 Apr
5 May
6-8 wk
26 May
16 Jun
0 wk
Pinnate dahlia (tubers)
Dahlia × pinnata
Fleece
11 Apr – 9 May
19 May
4-8 wk
6 Jun
16 Jun
2 wk after
6 Jun
6 Jun
2 wk after
Foxglove
Digitalis purpurea
15 – 29 Mar
8-10 wk
24 May
0 wk
6 Jun
2 wk after
Busy lizzie
Impatiens walleriana
2 – 30 Apr
12 May
8-12 wk
25 Jun
7 Jul
5 wk after
Creeping zinnia
Sanvitalia procumbens
Fleece
4 – 18 Apr
8 May
6-8 wk
30 May
19 Jun
1 wk after
Hyacinth bean
Dolichos lablab
Season too short
25 Apr – 9 May
4-6 wk
6 Jun
2 wk after
Chinese lantern
Physalis alkekengi
17 – 31 Mar
26 Mar
8-10 wk
26 May
0 wk
Love in a mist
Nigella damascena
24 May
22 Jun
0 wk
25 May
12 Jun
0 wk
Strawflower
Xerochrysum bracteatum
Fleece
4 – 18 Apr
18 Apr
6-8 wk
30 May
30 May
1 wk after
13 Jul
7 wk after
Purple-top vervain
Verbena bonariensis
3 – 31 Mar
26 Mar
8-12 wk
26 May
0 wk
Cardoon
Cynara cardunculus
Season too short
1 – 29 Mar
16 Mar
8-12 wk
24 May
0 wk
Regal-foxtail
Ptilotus nobilis
Greenhouse
7 Mar – 4 Apr
4 Apr
8-12 wk
30 May
30 May
1 wk after
Globe amaranth
Gomphrena globosa
Greenhouse
4 – 18 Apr
18 Apr
6-8 wk
30 May
30 May
1 wk after
Corn poppy
Papaver rhoeas
24 May
7 Jul
0 wk
25 May
27 Jun
0 wk
Snapdragon
Antirrhinum majus
1 – 29 Mar
2 May
8-12 wk
24 May
27 Jun
0 wk
3 Jun
17 Jun
1 wk after
Flossflower
Ageratum houstonianum
Fleece
28 Mar – 11 Apr
24 Apr
8-10 wk
6 Jun
19 Jun
2 wk after
Sweet pea
Lathyrus odoratus
29 Mar – 19 Apr
26 May
5-8 wk
24 May
30 Jun
0 wk
Stock
Matthiola incana
29 Mar – 12 Apr
26 May
6-8 wk
24 May
7 Jul
0 wk
6 Jun
27 Jun
2 wk after
Wormwood
Artemisia absinthium
29 Mar – 12 Apr
29 Apr
6-8 wk
24 May
10 Jun
0 wk
6 Jun
2 wk after
Mexican sunflower
Tithonia rotundifolia
Greenhouse
18 Apr – 2 May
27 Apr
4-6 wk
30 May
1 wk after
Garden pansy
Viola × wittrockiana
15 – 29 Mar
15 May
8-10 wk
24 May
10 Jul
0 wk
3 Jun
30 Jun
1 wk after
Petunia
Petunia
Fleece
7 Mar – 4 Apr
14 Apr
8-12 wk
30 May
9 Jun
1 wk after
Sweet Scabious
Scabiosa atropurpurea
31 Mar – 14 Apr
9 Apr
6-8 wk
26 May
0 wk
6 Jul
6 wk after
Common zinnia
Zinnia elegans
Fleece
18 Apr – 2 May
12 May
4-6 wk
30 May
9 Jun
1 wk after
Common morning glory
Ipomoea purpurea
Greenhouse
25 Apr – 9 May
19 May
3-5 wk
30 May
9 Jun
1 wk after
Garden cosmos
Cosmos bipinnatus
Fleece
18 Apr – 2 May
19 May
4-6 wk
30 May
16 Jun
1 wk after
18 Jun
4 wk after
Scarlet milkweed
Asclepias curassavica
Greenhouse
14 Mar – 11 Apr
4 May
8-12 wk
6 Jun
29 Jun
2 wk after
Bee balm
Monarda didyma
1 – 29 Mar
12 Apr
8-12 wk
24 May
7 Jun
0 wk
18 Jun
4 wk after
Yarrow
Achillea millefolium
29 Mar – 12 Apr
30 Mar
6-8 wk
24 May
0 wk
6 Jun
2 wk after
Safflower
Carthamus tinctorius
24 May
10 Jun
0 wk
25 May
31 May
0 wk
Iceland poppy
Papaver nudicaule
Season too short
29 Mar – 12 Apr
19 May
6-8 wk
24 May
30 Jun
0 wk
8 May
20 Jun
2 wk before
Bishop's flower
Ammi majus
12 – 26 Apr
30 May
4-6 wk
24 May
27 Jun
0 wk
6 Jun
17 Jun
2 wk after
Drumsticks
Pycnosorus globosus
Greenhouse
7 – 21 Mar
18 Mar
10-12 wk
30 May
1 wk after
Sunflower
Helianthus annuus
Fleece
2 – 9 May
31 May
3-4 wk
30 May
21 Jun
1 wk after
6 Jun
11 Jun
2 wk after
China aster
Callistephus chinensis
11 – 25 Apr
6 May
6-8 wk
6 Jun
17 Jun
2 wk after
6 Jul
6 wk after
Annual phlox
Phlox drummondii
4 – 18 Apr
22 Apr
6-8 wk
30 May
3 Jun
1 wk after
6 Jul
6 wk after
Hollyhock
Alcea rosea
29 Mar – 12 Apr
6-8 wk
24 May
0 wk
6 Jun
2 wk after
Alpine delphinium
Delphinium elatum
1 – 29 Mar
12 Apr
8-12 wk
24 May
7 Jun
0 wk
18 Jun
4 wk after
African marigold
Tagetes erecta
Fleece
4 – 18 Apr
8 May
6-8 wk
30 May
19 Jun
1 wk after
Black-eyed Susan
Rudbeckia hirta
31 Mar – 14 Apr
26 Apr
6-8 wk
26 May
7 Jun
0 wk
6 Jul
6 wk after
Wood sage
Salvia nemorosa
15 – 29 Mar
2 Apr
8-10 wk
24 May
28 May
0 wk
18 Jun
4 wk after
Black-eyed susan vine
Thunbergia alata
Greenhouse
21 Mar – 18 Apr
28 Apr
6-10 wk
30 May
9 Jun
1 wk after
California goldenpoppy
Eschscholzia californica
24 May
1 Jul
0 wk
25 May
21 Jun
0 wk
Painted tongue
Salpiglossis sinuata
Fleece
21 Mar – 4 Apr
15 Apr
8-10 wk
30 May
10 Jun
1 wk after
Water forget-me-not
Myosotis scorpioides
29 Mar – 12 Apr
29 Apr
6-8 wk
24 May
10 Jun
0 wk
6 Jun
2 wk after