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Rel. frost
Last spring frost (0°C) 5 May Frost 9 of 10 years · 20 years of data
Frost-free season 122 days 5 May – 4 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)
17 – 31 Mar
17 Jun
5-7 wk
5 May
22 Jul
0 wk
28 Apr
12 Jul
1 wk before
Broccoli
Brassica oleracea (Italica-gruppen)
24 Mar – 7 Apr
29 Jun
4-6 wk
5 May
27 Jul
0 wk
28 Apr
17 Jul
1 wk before
Chili pepper
Capsicum annuum
Season too short
20 Feb – 20 Mar
8-12 wk
15 May
1 wk after
Curly Kale
Brassica oleracea (Curly Kale-gruppen)
17 – 31 Mar
12 Jun
5-7 wk
5 May
17 Jul
0 wk
23 Apr
7 Jul
2 wk before
Garden cucumber
Cucumis sativus
Season too short
17 – 24 Apr
3-4 wk
15 May
1 wk after
Florence Fennel
Foeniculum vulgare
Fleece
20 – 27 Apr
20 May
4-5 wk
25 May
17 Jun
3 wk after
26 May
7 Jun
3 wk after
Butter bean
Phaseolus lunatus
Season too short
18 – 25 May
3-4 wk
15 Jun
6 wk after
Onion
Allium cepa (Cepa-gruppen)
10 Feb – 10 Mar
20 Mar
8-12 wk
5 May
15 May
0 wk
15 May
1 wk after
Onion (sets)
Allium cepa (Cepa-gruppen)
28 Apr
4 Jun
1 wk before
28 Apr
25 May
1 wk before
Maize
Zea mays
Season too short
9 – 16 Apr
3-4 wk
7 May
0 wk
Swiss Chard
Beta vulgaris (Flavescens-gruppen)
12 – 19 Apr
16 Jun
3-4 wk
10 May
7 Jul
1 wk after
15 May
27 Jun
1 wk after
Carrot
Daucus carota subsp. sativus var. sativus
5 May
7 Jul
0 wk
23 Apr
27 Jun
2 wk before
Palm Kale
Brassica oleracea (Palm Kale-gruppen)
17 – 31 Mar
12 Jun
5-7 wk
5 May
17 Jul
0 wk
23 Apr
7 Jul
2 wk before
Potato
Solanum tuberosum
29 Mar – 12 Apr
17 May
4-6 wk
10 May
14 Jun
1 wk after
10 May
4 Jun
1 wk after
Ornamental Kale
Brassica oleracea (Ornamental-gruppen)
17 – 31 Mar
22 Jun
5-7 wk
5 May
27 Jul
0 wk
28 Apr
17 Jul
1 wk before
Pumpkin
Cucurbita pepo
Season too short
17 – 24 Apr
3-4 wk
15 May
1 wk after
Beetroot
Beta vulgaris (Conditiva-gruppen)
12 – 19 Apr
22 May
3-4 wk
10 May
12 Jun
1 wk after
15 May
2 Jun
1 wk after
Red Cabbage
Brassica oleracea (Red Cabbage-gruppen)
24 Mar – 7 Apr
24 Jun
4-6 wk
5 May
22 Jul
0 wk
Lettuce
Lactuca sativa
7 – 14 Apr
11 Jul
3-4 wk
5 May
1 Aug
0 wk
28 Apr
22 Jul
1 wk before
Savoy Cabbage
Brassica oleracea (Savoy Cabbage-gruppen)
24 Mar – 7 Apr
24 Jun
4-6 wk
5 May
22 Jul
0 wk
Shallot (bulbs)
Allium cepa (Aggregatum-gruppen)
26 Mar – 9 Apr
23 May
2-4 wk
23 Apr
6 Jun
2 wk before
23 Apr
27 May
2 wk before
Shallot (sets)
Allium cepa (Aggregatum-gruppen)
28 Apr
4 Jun
1 wk before
28 Apr
25 May
1 wk before
Spinach
Spinacia oleracea
7 – 14 Apr
26 Jul
3-4 wk
5 May
16 Aug
0 wk
17 Apr
6 Aug
3 wk before
Sweet potato
Ipomoea batatas
1 – 15 Jun
4-6 wk
13 Jul
10 wk after
Garden tomato
Solanum lycopersicum
Season too short
12 – 26 Mar
6-8 wk
7 May
0 wk
Tomatillo
Physalis ixocarpa
Common Bean
Phaseolus vulgaris
Season too short
9 – 23 Apr
2-4 wk
7 May
0 wk
15 May
1 wk after
White Cabbage
Brassica oleracea (White Cabbage-gruppen)
24 Mar – 7 Apr
24 Jun
4-6 wk
5 May
22 Jul
0 wk
Garden pea
Pisum sativum
7 – 14 Apr
26 Jun
3-4 wk
5 May
17 Jul
0 wk
28 Apr
7 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
Season too short
3 – 17 Apr
4-6 wk
15 May
1 wk after
Lemon balm
Melissa officinalis
24 Feb – 10 Mar
22 May
8-10 wk
5 May
17 Jul
0 wk
26 May
7 Jul
3 wk after
Dill
Anethum graveolens
28 Apr
7 Jul
1 wk before
Wild chives
Allium schoenoprasum
10 – 24 Mar
5 Jun
6-8 wk
5 May
17 Jul
0 wk
28 Apr
7 Jul
1 wk before
Spearmint
Mentha spicata
10 Feb – 10 Mar
22 May
8-12 wk
5 May
17 Jul
0 wk
26 May
7 Jul
3 wk after
Coriander
Coriandrum sativum
5 May
27 Jul
0 wk
15 May
17 Jul
1 wk after
Garden sage
Salvia officinalis
1 – 15 Mar
7 May
8-10 wk
10 May
2 Jul
1 wk after
Common thyme
Thymus vulgaris
24 Feb – 10 Mar
12 May
8-10 wk
5 May
7 Jul
0 wk
Oregano
Origanum vulgare
10 – 24 Mar
26 May
6-8 wk
5 May
7 Jul
0 wk
26 May
27 Jun
3 wk after
Parsley
Petroselinum crispum
10 – 24 Mar
26 May
6-8 wk
5 May
7 Jul
0 wk
28 Apr
27 Jun
1 wk before
Rosemary
Salvia rosmarinus
1 Feb – 1 Mar
16 Mar
10-14 wk
10 May
25 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
Season too short
17 – 24 Apr
3-4 wk
15 May
1 wk after
Cornflower
Centaurea cyanus
5 May
17 Jul
0 wk
28 Apr
7 Jul
1 wk before
Statice
Limonium sinuatum
Greenhouse
26 Feb – 12 Mar
27 Mar
8-10 wk
7 May
22 May
0 wk
Sweet William
Dianthus barbatus
10 – 24 Mar
6-8 wk
5 May
0 wk
10 May
1 wk after
Snow-on-the-mountain
Euphorbia marginata
Greenhouse
12 – 26 Mar
10 Apr
6-8 wk
7 May
22 May
0 wk
2 Jun
4 wk after
Pinnate dahlia
Dahlia × pinnata
Greenhouse
10 – 24 Mar
17 Apr
6-8 wk
5 May
29 May
0 wk
Pinnate dahlia (tubers)
Dahlia × pinnata
Fleece
20 Mar – 17 Apr
10 Apr
4-8 wk
15 May
1 wk after
15 May
1 wk after
Foxglove
Digitalis purpurea
24 Feb – 10 Mar
8-10 wk
5 May
0 wk
15 May
1 wk after
Busy lizzie
Impatiens walleriana
Fleece
2 – 30 Mar
1 Apr
8-12 wk
25 May
27 May
3 wk after
Creeping zinnia
Sanvitalia procumbens
Greenhouse
12 – 26 Mar
20 Apr
6-8 wk
7 May
1 Jun
0 wk
Hyacinth bean
Dolichos lablab
Season too short
13 – 27 Apr
4-6 wk
25 May
3 wk after
Chinese lantern
Physalis alkekengi
1 – 15 Mar
2 Apr
8-10 wk
10 May
28 May
1 wk after
Love in a mist
Nigella damascena
5 May
2 Jul
0 wk
28 Apr
22 Jun
1 wk before
Strawflower
Xerochrysum bracteatum
Greenhouse
12 – 26 Mar
31 Mar
6-8 wk
7 May
12 May
0 wk
2 Jun
4 wk after
Purple-top vervain
Verbena bonariensis
15 Feb – 15 Mar
2 Apr
8-12 wk
10 May
28 May
1 wk after
Cardoon
Cynara cardunculus
Fleece
20 Feb – 20 Mar
23 Mar
8-12 wk
15 May
18 May
1 wk after
Regal-foxtail
Ptilotus nobilis
Season too short
20 Feb – 20 Mar
8-12 wk
15 May
1 wk after
Globe amaranth
Gomphrena globosa
Season too short
20 Mar – 3 Apr
6-8 wk
15 May
1 wk after
Corn poppy
Papaver rhoeas
5 May
17 Jul
0 wk
28 Apr
7 Jul
1 wk before
Snapdragon
Antirrhinum majus
10 Feb – 10 Mar
12 May
8-12 wk
5 May
7 Jul
0 wk
10 May
27 Jun
1 wk after
Flossflower
Ageratum houstonianum
Greenhouse
6 – 20 Mar
6 Apr
8-10 wk
15 May
1 Jun
1 wk after
Sweet pea
Lathyrus odoratus
10 – 31 Mar
2 Jun
5-8 wk
5 May
7 Jul
0 wk
Stock
Matthiola incana
10 – 24 Mar
5 Jun
6-8 wk
5 May
17 Jul
0 wk
15 May
7 Jul
1 wk after
Wormwood
Artemisia absinthium
10 – 24 Mar
6 May
6-8 wk
5 May
17 Jun
0 wk
15 May
7 Jun
1 wk after
Mexican sunflower
Tithonia rotundifolia
Season too short
3 – 17 Apr
4-6 wk
15 May
1 wk after
Garden pansy
Viola × wittrockiana
24 Feb – 10 Mar
22 May
8-10 wk
5 May
17 Jul
0 wk
10 May
7 Jul
1 wk after
Petunia
Petunia
Greenhouse
12 Feb – 12 Mar
27 Mar
8-12 wk
7 May
22 May
0 wk
Sweet Scabious
Scabiosa atropurpurea
15 – 29 Mar
16 Apr
6-8 wk
10 May
28 May
1 wk after
10 Jun
5 wk after
Common zinnia
Zinnia elegans
Greenhouse
26 Mar – 9 Apr
20 Apr
4-6 wk
7 May
18 May
0 wk
Common morning glory
Ipomoea purpurea
Season too short
10 – 24 Apr
3-5 wk
15 May
1 wk after
Garden cosmos
Cosmos bipinnatus
Greenhouse
26 Mar – 9 Apr
1 May
4-6 wk
7 May
29 May
0 wk
15 May
19 May
1 wk after
Scarlet milkweed
Asclepias curassavica
Season too short
2 – 30 Mar
6 Mar
8-12 wk
25 May
3 wk after
Bee balm
Monarda didyma
10 Feb – 10 Mar
22 Apr
8-12 wk
5 May
17 Jun
0 wk
26 May
7 Jun
3 wk after
Yarrow
Achillea millefolium
10 – 24 Mar
6 Apr
6-8 wk
5 May
18 May
0 wk
15 May
1 wk after
Safflower
Carthamus tinctorius
5 May
17 Jun
0 wk
28 Apr
7 Jun
1 wk before
Iceland poppy
Papaver nudicaule
Season too short
10 – 24 Mar
26 May
6-8 wk
5 May
7 Jul
0 wk
27 Mar
27 Jun
6 wk before
Bishop's flower
Ammi majus
24 Mar – 7 Apr
9 Jun
4-6 wk
5 May
7 Jul
0 wk
15 May
27 Jun
1 wk after
Drumsticks
Pycnosorus globosus
Season too short
20 Feb – 6 Mar
10-12 wk
15 May
1 wk after
Sunflower
Helianthus annuus
27 Apr – 4 May
24 May
3-4 wk
25 May
14 Jun
3 wk after
26 May
4 Jun
3 wk after
China aster
Callistephus chinensis
30 Mar – 13 Apr
13 May
6-8 wk
25 May
24 Jun
3 wk after
10 Jun
14 Jun
5 wk after
Annual phlox
Phlox drummondii
Greenhouse
10 – 24 Mar
20 Apr
6-8 wk
5 May
1 Jun
0 wk
15 May
22 May
1 wk after
Hollyhock
Alcea rosea
10 – 24 Mar
6-8 wk
5 May
0 wk
15 May
1 wk after
Alpine delphinium
Delphinium elatum
10 Feb – 10 Mar
22 Apr
8-12 wk
5 May
17 Jun
0 wk
26 May
7 Jun
3 wk after
African marigold
Tagetes erecta
Greenhouse
12 – 26 Mar
20 Apr
6-8 wk
7 May
1 Jun
0 wk
Black-eyed Susan
Rudbeckia hirta
15 – 29 Mar
3 May
6-8 wk
10 May
14 Jun
1 wk after
10 Jun
5 wk after
Wood sage
Salvia nemorosa
24 Feb – 10 Mar
12 Apr
8-10 wk
5 May
7 Jun
0 wk
26 May
28 May
3 wk after
Black-eyed susan vine
Thunbergia alata
Season too short
6 Mar – 3 Apr
6-10 wk
15 May
1 wk after
California goldenpoppy
Eschscholzia californica
5 May
4 Jul
0 wk
28 Apr
24 Jun
1 wk before
Painted tongue
Salpiglossis sinuata
16 – 30 Mar
6 Apr
8-10 wk
25 May
1 Jun
3 wk after
Water forget-me-not
Myosotis scorpioides
10 – 24 Mar
6 May
6-8 wk
5 May
17 Jun
0 wk
15 May
7 Jun
1 wk after