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Method
Rel. frost
Last spring frost (0°C) 19 May Frost 3 of 4 years · 20 years of data
Frost-free season 100 days 19 May – 27 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)
31 Mar – 14 Apr
15 Jun
5-7 wk
19 May
20 Jul
0 wk
23 May
10 Jul
1 wk after
Broccoli
Brassica oleracea (Italica-gruppen)
7 – 21 Apr
27 Jun
4-6 wk
19 May
25 Jul
0 wk
23 May
15 Jul
1 wk after
Chili pepper
Capsicum annuum
Season too short
2 – 30 Mar
8-12 wk
25 May
1 wk after
Curly Kale
Brassica oleracea (Curly Kale-gruppen)
31 Mar – 14 Apr
10 Jun
5-7 wk
19 May
15 Jul
0 wk
19 May
5 Jul
0 wk
Garden cucumber
Cucumis sativus
Greenhouse
27 Apr – 4 May
17 May
3-4 wk
25 May
7 Jun
1 wk after
Florence Fennel
Foeniculum vulgare
Fleece
27 Apr – 4 May
20 May
4-5 wk
1 Jun
17 Jun
2 wk after
23 Jun
5 wk after
Butter bean
Phaseolus lunatus
Season too short
30 May – 6 Jun
3-4 wk
27 Jun
6 wk after
Onion
Allium cepa (Cepa-gruppen)
Fleece
24 Feb – 24 Mar
18 Mar
8-12 wk
19 May
0 wk
29 May
1 wk after
Onion (sets)
Allium cepa (Cepa-gruppen)
23 May
24 May
1 wk after
23 May
1 wk after
Maize
Zea mays
Greenhouse
21 – 28 Apr
7 May
3-4 wk
19 May
28 May
0 wk
Swiss Chard
Beta vulgaris (Flavescens-gruppen)
23 – 30 Apr
16 Jun
3-4 wk
21 May
7 Jul
0 wk
9 Jun
27 Jun
3 wk after
Carrot
Daucus carota subsp. sativus var. sativus
19 May
28 Jun
0 wk
19 May
18 Jun
0 wk
Palm Kale
Brassica oleracea (Palm Kale-gruppen)
31 Mar – 14 Apr
10 Jun
5-7 wk
19 May
15 Jul
0 wk
19 May
5 Jul
0 wk
Potato
Solanum tuberosum
23 Apr – 7 May
2 May
4-6 wk
4 Jun
2 wk after
4 Jun
2 wk after
Ornamental Kale
Brassica oleracea (Ornamental-gruppen)
31 Mar – 14 Apr
13 Jun
5-7 wk
19 May
18 Jul
0 wk
23 May
8 Jul
1 wk after
Pumpkin
Cucurbita pepo
Fleece
4 – 11 May
22 May
3-4 wk
1 Jun
12 Jun
2 wk after
Beetroot
Beta vulgaris (Conditiva-gruppen)
23 – 30 Apr
29 Apr
3-4 wk
21 May
0 wk
9 Jun
3 wk after
Red Cabbage
Brassica oleracea (Red Cabbage-gruppen)
7 – 21 Apr
22 Jun
4-6 wk
19 May
20 Jul
0 wk
Lettuce
Lactuca sativa
21 – 28 Apr
2 Jul
3-4 wk
19 May
23 Jul
0 wk
23 May
13 Jul
1 wk after
Savoy Cabbage
Brassica oleracea (Savoy Cabbage-gruppen)
7 – 21 Apr
22 Jun
4-6 wk
19 May
20 Jul
0 wk
Shallot (bulbs)
Allium cepa (Aggregatum-gruppen)
21 Apr – 5 May
13 May
2-4 wk
19 May
27 May
0 wk
19 May
0 wk
Shallot (sets)
Allium cepa (Aggregatum-gruppen)
23 May
24 May
1 wk after
23 May
1 wk after
Spinach
Spinacia oleracea
21 – 28 Apr
24 Jul
3-4 wk
19 May
14 Aug
0 wk
15 May
4 Aug
1 wk before
Sweet potato
Ipomoea batatas
20 Jun – 4 Jul
4-6 wk
1 Aug
11 wk after
Garden tomato
Solanum lycopersicum
Greenhouse
24 Mar – 7 Apr
16 Apr
6-8 wk
19 May
28 May
0 wk
Tomatillo
Physalis ixocarpa
Common Bean
Phaseolus vulgaris
Fleece
27 Apr – 11 May
24 May
2-4 wk
25 May
7 Jun
1 wk after
23 Jun
5 wk after
White Cabbage
Brassica oleracea (White Cabbage-gruppen)
7 – 21 Apr
22 Jun
4-6 wk
19 May
20 Jul
0 wk
Garden pea
Pisum sativum
21 – 28 Apr
17 Jun
3-4 wk
19 May
8 Jul
0 wk
23 May
28 Jun
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
13 – 27 Apr
24 May
4-6 wk
25 May
21 Jun
1 wk after
Lemon balm
Melissa officinalis
10 – 24 Mar
13 May
8-10 wk
19 May
8 Jul
0 wk
23 Jun
28 Jun
5 wk after
Dill
Anethum graveolens
23 May
7 Jul
1 wk after
Wild chives
Allium schoenoprasum
24 Mar – 7 Apr
3 Jun
6-8 wk
19 May
15 Jul
0 wk
23 May
5 Jul
1 wk after
Spearmint
Mentha spicata
24 Feb – 24 Mar
20 May
8-12 wk
19 May
15 Jul
0 wk
23 Jun
5 Jul
5 wk after
Coriander
Coriandrum sativum
19 May
27 Jul
0 wk
9 Jun
17 Jul
3 wk after
Garden sage
Salvia officinalis
12 – 26 Mar
5 May
8-10 wk
21 May
30 Jun
0 wk
Common thyme
Thymus vulgaris
10 – 24 Mar
10 May
8-10 wk
19 May
5 Jul
0 wk
Oregano
Origanum vulgare
24 Mar – 7 Apr
24 May
6-8 wk
19 May
5 Jul
0 wk
23 Jun
25 Jun
5 wk after
Parsley
Petroselinum crispum
24 Mar – 7 Apr
24 May
6-8 wk
19 May
5 Jul
0 wk
23 May
25 Jun
1 wk after
Rosemary
Salvia rosmarinus
12 Feb – 12 Mar
11 Mar
10-14 wk
21 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
27 Apr – 4 May
31 May
3-4 wk
25 May
21 Jun
1 wk after
Cornflower
Centaurea cyanus
19 May
15 Jul
0 wk
23 May
5 Jul
1 wk after
Statice
Limonium sinuatum
Fleece
16 – 30 Mar
21 Apr
8-10 wk
25 May
16 Jun
1 wk after
Sweet William
Dianthus barbatus
24 Mar – 7 Apr
6-8 wk
19 May
0 wk
4 Jun
2 wk after
Snow-on-the-mountain
Euphorbia marginata
Fleece
30 Mar – 13 Apr
5 May
6-8 wk
25 May
16 Jun
1 wk after
17 Jul
8 wk after
Pinnate dahlia
Dahlia × pinnata
4 – 18 Apr
30 Apr
6-8 wk
30 May
11 Jun
2 wk after
Pinnate dahlia (tubers)
Dahlia × pinnata
28 Apr – 26 May
14 May
4-8 wk
23 Jun
5 wk after
23 Jun
5 wk after
Foxglove
Digitalis purpurea
10 – 24 Mar
8-10 wk
19 May
0 wk
9 Jun
3 wk after
Busy lizzie
Impatiens walleriana
28 Mar – 25 Apr
18 May
8-12 wk
20 Jun
13 Jul
5 wk after
Creeping zinnia
Sanvitalia procumbens
Fleece
30 Mar – 13 Apr
15 May
6-8 wk
25 May
26 Jun
1 wk after
Hyacinth bean
Dolichos lablab
Season too short
20 Apr – 4 May
4-6 wk
1 Jun
2 wk after
Chinese lantern
Physalis alkekengi
12 – 26 Mar
2 Apr
8-10 wk
21 May
28 May
0 wk
Love in a mist
Nigella damascena
19 May
23 Jun
0 wk
23 May
13 Jun
1 wk after
Strawflower
Xerochrysum bracteatum
Fleece
30 Mar – 13 Apr
25 Apr
6-8 wk
25 May
6 Jun
1 wk after
17 Jul
8 wk after
Purple-top vervain
Verbena bonariensis
26 Feb – 26 Mar
2 Apr
8-12 wk
21 May
28 May
0 wk
Cardoon
Cynara cardunculus
Greenhouse
24 Feb – 24 Mar
21 Mar
8-12 wk
19 May
0 wk
Regal-foxtail
Ptilotus nobilis
Greenhouse
2 – 30 Mar
16 Apr
8-12 wk
25 May
11 Jun
1 wk after
Globe amaranth
Gomphrena globosa
Greenhouse
30 Mar – 13 Apr
30 Apr
6-8 wk
25 May
11 Jun
1 wk after
Corn poppy
Papaver rhoeas
19 May
8 Jul
0 wk
23 May
28 Jun
1 wk after
Snapdragon
Antirrhinum majus
24 Feb – 24 Mar
3 May
8-12 wk
19 May
28 Jun
0 wk
4 Jun
18 Jun
2 wk after
Flossflower
Ageratum houstonianum
Fleece
23 Mar – 6 Apr
1 May
8-10 wk
1 Jun
26 Jun
2 wk after
Sweet pea
Lathyrus odoratus
24 Mar – 14 Apr
31 May
5-8 wk
19 May
5 Jul
0 wk
Stock
Matthiola incana
24 Mar – 7 Apr
27 May
6-8 wk
19 May
8 Jul
0 wk
9 Jun
28 Jun
3 wk after
Wormwood
Artemisia absinthium
24 Mar – 7 Apr
4 May
6-8 wk
19 May
15 Jun
0 wk
9 Jun
3 wk after
Mexican sunflower
Tithonia rotundifolia
Greenhouse
13 – 27 Apr
9 May
4-6 wk
25 May
6 Jun
1 wk after
Garden pansy
Viola × wittrockiana
10 – 24 Mar
20 May
8-10 wk
19 May
15 Jul
0 wk
4 Jun
5 Jul
2 wk after
Petunia
Petunia
Fleece
2 – 30 Mar
21 Apr
8-12 wk
25 May
16 Jun
1 wk after
Sweet Scabious
Scabiosa atropurpurea
26 Mar – 9 Apr
16 Apr
6-8 wk
21 May
28 May
0 wk
7 Jul
7 wk after
Common zinnia
Zinnia elegans
Fleece
13 – 27 Apr
24 May
4-6 wk
25 May
21 Jun
1 wk after
Common morning glory
Ipomoea purpurea
Greenhouse
20 Apr – 4 May
31 May
3-5 wk
25 May
21 Jun
1 wk after
Garden cosmos
Cosmos bipinnatus
Fleece
13 – 27 Apr
21 May
4-6 wk
25 May
18 Jun
1 wk after
23 Jun
5 wk after
Scarlet milkweed
Asclepias curassavica
Greenhouse
9 Mar – 6 Apr
16 May
8-12 wk
1 Jun
11 Jul
2 wk after
Bee balm
Monarda didyma
24 Feb – 24 Mar
13 Apr
8-12 wk
19 May
8 Jun
0 wk
23 Jun
5 wk after
Yarrow
Achillea millefolium
24 Mar – 7 Apr
4 Apr
6-8 wk
19 May
0 wk
9 Jun
3 wk after
Safflower
Carthamus tinctorius
19 May
15 Jun
0 wk
23 May
5 Jun
1 wk after
Iceland poppy
Papaver nudicaule
Season too short
24 Mar – 7 Apr
24 May
6-8 wk
19 May
5 Jul
0 wk
1 May
25 Jun
3 wk before
Bishop's flower
Ammi majus
7 – 21 Apr
31 May
4-6 wk
19 May
28 Jun
0 wk
9 Jun
18 Jun
3 wk after
Drumsticks
Pycnosorus globosus
Greenhouse
2 – 16 Mar
20 Mar
10-12 wk
25 May
29 May
1 wk after
Sunflower
Helianthus annuus
Fleece
27 Apr – 4 May
4 Jun
3-4 wk
25 May
25 Jun
1 wk after
9 Jun
15 Jun
3 wk after
China aster
Callistephus chinensis
6 – 20 Apr
8 May
6-8 wk
1 Jun
19 Jun
2 wk after
7 Jul
7 wk after
Annual phlox
Phlox drummondii
30 Mar – 13 Apr
29 Apr
6-8 wk
25 May
10 Jun
1 wk after
7 Jul
7 wk after
Hollyhock
Alcea rosea
24 Mar – 7 Apr
6-8 wk
19 May
0 wk
9 Jun
3 wk after
Alpine delphinium
Delphinium elatum
24 Feb – 24 Mar
13 Apr
8-12 wk
19 May
8 Jun
0 wk
23 Jun
5 wk after
African marigold
Tagetes erecta
Fleece
30 Mar – 13 Apr
15 May
6-8 wk
25 May
26 Jun
1 wk after
Black-eyed Susan
Rudbeckia hirta
26 Mar – 9 Apr
28 Apr
6-8 wk
21 May
9 Jun
0 wk
7 Jul
7 wk after
Wood sage
Salvia nemorosa
10 – 24 Mar
3 Apr
8-10 wk
19 May
29 May
0 wk
23 Jun
5 wk after
Black-eyed susan vine
Thunbergia alata
Greenhouse
16 Mar – 13 Apr
10 May
6-10 wk
25 May
21 Jun
1 wk after
California goldenpoppy
Eschscholzia californica
19 May
5 Jul
0 wk
23 May
25 Jun
1 wk after
Painted tongue
Salpiglossis sinuata
Fleece
16 – 30 Mar
22 Apr
8-10 wk
25 May
17 Jun
1 wk after
Water forget-me-not
Myosotis scorpioides
24 Mar – 7 Apr
4 May
6-8 wk
19 May
15 Jun
0 wk
9 Jun
3 wk after