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Rel. frost
Last spring frost (0°C) 22 Mar Frost 9 of 10 years · 20 years of data
Frost-free season 216 days 22 Mar – 24 Oct
Probability that frost is over

10% = Half of years are frost-free by this date. More about frost & season →

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Vegetables

Plant Sow indoors Transplant Direct sow
Date Growing timeGrow. time Date Rel. frost Date Rel. frost
Cauliflower
Brassica oleracea (Botrytis-gruppen)
3 – 17 Mar
5-7 wk
21 Apr
5 wk after
18 Mar
1 wk before
Broccoli
Brassica oleracea (Italica-gruppen)
25 Feb – 11 Mar
4-6 wk
8 Apr
3 wk after
18 Mar
1 wk before
Chili pepper
Capsicum annuum
Fleece
22 Feb – 22 Mar
8-12 wk
17 May
8 wk after
Kale
Brassica oleracea (Curly Kale-gruppen)
8 – 22 Jan
5-7 wk
26 Feb
4 wk before
14 Mar
2 wk before
Cucumber
Cucumis sativus
Fleece
19 – 26 Apr
3-4 wk
17 May
8 wk after
Florence Fennel
Foeniculum vulgare
Fleece
12 – 19 Apr
4-5 wk
17 May
8 wk after
17 Apr
4 wk after
Butter bean
Phaseolus lunatus
Season too short
4 – 11 Apr
3-4 wk
2 May
6 wk after
Onion
Allium cepa (Cepa-gruppen)
28 Dec – 25 Jan
8-12 wk
22 Mar
Vid frost
4 Apr
2 wk after
Onion (sets)
Allium cepa (Cepa-gruppen)
Season too short
9 Mar
2 wk before
Sweetcorn
Zea mays
Season too short
27 Mar – 3 Apr
3-4 wk
24 Apr
5 wk after
Chard
Beta vulgaris (Flavescens-gruppen)
24 – 31 Mar
3-4 wk
21 Apr
5 wk after
4 Apr
2 wk after
Carrot
Daucus carota subsp. sativus var. sativus
14 Mar
2 wk before
Cavolo nero
Brassica oleracea (Palm Kale-gruppen)
8 – 22 Jan
5-7 wk
26 Feb
4 wk before
14 Mar
2 wk before
Potato
Solanum tuberosum
Season too short
19 Jan – 2 Feb
4-6 wk
2 Mar
3 wk before
2 Mar
3 wk before
Ornamental Kale
Brassica oleracea (Ornamental-gruppen)
8 – 22 Jan
5-7 wk
26 Feb
4 wk before
18 Mar
1 wk before
Pumpkin
Cucurbita pepo
Fleece
19 – 26 Apr
3-4 wk
17 May
8 wk after
Beetroot
Beta vulgaris (Conditiva-gruppen)
24 – 31 Mar
3-4 wk
21 Apr
5 wk after
4 Apr
2 wk after
Red Cabbage
Brassica oleracea (Red Cabbage-gruppen)
25 Feb – 11 Mar
4-6 wk
8 Apr
3 wk after
Lettuce
Lactuca sativa
15 – 22 Feb
3-4 wk
15 Mar
1 wk before
18 Mar
1 wk before
Savoy Cabbage
Brassica oleracea (Savoy Cabbage-gruppen)
1 – 15 Feb
4-6 wk
15 Mar
1 wk before
Shallot (bulbs)
Allium cepa (Aggregatum-gruppen)
Season too short
7 – 21 Jan
2-4 wk
4 Feb
7 wk before
4 Feb
7 wk before
Shallot (sets)
Allium cepa (Aggregatum-gruppen)
Season too short
16 Feb
5 wk before
Spinach
Spinacia oleracea
7 – 14 Feb
3-4 wk
7 Mar
3 wk before
9 Mar
3 wk before
Sweet potato
Ipomoea batatas
9 – 23 Apr
4-6 wk
21 May
11 wk after
Tomato
Solanum lycopersicum
14 – 28 Mar
6-8 wk
9 May
8 wk after
Tomatillo
Physalis ixocarpa
French bean
Phaseolus vulgaris
11 – 25 Apr
2-4 wk
9 May
8 wk after
2 May
6 wk after
White Cabbage
Brassica oleracea (White Cabbage-gruppen)
25 Feb – 11 Mar
4-6 wk
8 Apr
3 wk after
Pea
Pisum sativum
7 – 14 Feb
3-4 wk
7 Mar
3 wk before
18 Mar
1 wk before
Current date Soon Date passed

Herbs

Plant Sow indoors Transplant Direct sow
Date Growing timeGrow. time Date Rel. frost Date Rel. frost
Basil
Ocimum basilicum
Season too short
13 – 27 Mar
4-6 wk
24 Apr
5 wk after
Lemon balm
Melissa officinalis
11 – 25 Jan
8-10 wk
22 Mar
Vid frost
16 Apr
4 wk after
Dill
Anethum graveolens
18 Mar
1 wk before
Chives
Allium schoenoprasum
1 – 15 Jan
6-8 wk
26 Feb
4 wk before
18 Mar
1 wk before
Spearmint
Mentha spicata
13 Dec – 10 Jan
8-12 wk
7 Mar
3 wk before
16 Apr
4 wk after
Coriander
Coriandrum sativum
4 Apr
2 wk after
Sage
Salvia officinalis
10 – 24 Feb
8-10 wk
21 Apr
5 wk after
Thyme
Thymus vulgaris
28 Jan – 11 Feb
8-10 wk
8 Apr
3 wk after
Oregano
Origanum vulgare
31 Jan – 14 Feb
6-8 wk
28 Mar
1 wk after
16 Apr
4 wk after
Parsley
Petroselinum crispum
10 – 24 Jan
6-8 wk
7 Mar
3 wk before
18 Mar
1 wk before
Rosemary
Salvia rosmarinus
13 Jan – 10 Feb
10-14 wk
21 Apr
5 wk after
Current date Soon Date passed

Annual flowers

Plant Sow indoors Transplant Direct sow
Date Growing timeGrow. time Date Rel. frost Date Rel. frost
Morning glory
Ipomoea tricolor
Greenhouse
19 – 26 Apr
3-4 wk
17 May
8 wk after
Cornflower
Centaurea cyanus
7 Mar
3 wk before
18 Mar
1 wk before
Statice
Limonium sinuatum
28 Feb – 14 Mar
8-10 wk
9 May
8 wk after
Sweet William
Dianthus barbatus
10 – 24 Jan
6-8 wk
7 Mar
3 wk before
30 Mar
1 wk after
Snow-on-the-mountain
Euphorbia marginata
14 – 28 Mar
6-8 wk
9 May
8 wk after
1 Jun
11 wk after
Dahlia
Dahlia × pinnata
9 – 23 Mar
6-8 wk
4 May
7 wk after
Dahlia (tubers)
Dahlia × pinnata
Season too short
24 Jan – 21 Feb
4-8 wk
21 Mar
21 Mar
Foxglove
Digitalis purpurea
27 Dec – 10 Jan
8-10 wk
7 Mar
3 wk before
4 Apr
2 wk after
Busy lizzie
Impatiens walleriana
Fleece
22 Feb – 22 Mar
8-12 wk
17 May
8 wk after
Creeping zinnia
Sanvitalia procumbens
14 – 28 Mar
6-8 wk
9 May
8 wk after
Hyacinth bean
Dolichos lablab
Season too short
5 – 19 Apr
4-6 wk
17 May
8 wk after
Chinese lantern
Physalis alkekengi
10 – 24 Feb
8-10 wk
21 Apr
5 wk after
Love in a mist
Nigella damascena
18 Mar
1 wk before
Strawflower
Xerochrysum bracteatum
Fleece
7 – 21 Mar
6-8 wk
2 May
6 wk after
7 May
7 wk after
Tall verbena
Verbena bonariensis
27 Jan – 24 Feb
8-12 wk
21 Apr
5 wk after
Cardoon
Cynara cardunculus
Greenhouse
23 Jan – 20 Feb
8-12 wk
17 Apr
4 wk after
Regal-foxtail
Ptilotus nobilis
Greenhouse
7 Feb – 7 Mar
8-12 wk
2 May
6 wk after
Globe amaranth
Gomphrena globosa
Fleece
22 Mar – 5 Apr
6-8 wk
17 May
8 wk after
Corn poppy
Papaver rhoeas
18 Mar
1 wk before
Snapdragon
Antirrhinum majus
21 Dec – 18 Jan
8-12 wk
15 Mar
1 wk before
30 Mar
1 wk after
Flossflower
Ageratum houstonianum
Fleece
8 – 22 Mar
8-10 wk
17 May
8 wk after
Sweet pea
Lathyrus odoratus
10 – 31 Jan
5-8 wk
7 Mar
3 wk before
Stock
Matthiola incana
18 Jan – 1 Feb
6-8 wk
15 Mar
1 wk before
4 Apr
2 wk after
Wormwood
Artemisia absinthium
10 – 24 Jan
6-8 wk
7 Mar
3 wk before
4 Apr
2 wk after
Mexican sunflower
Tithonia rotundifolia
Greenhouse
21 Mar – 4 Apr
4-6 wk
2 May
6 wk after
Pansy
Viola × wittrockiana
18 Dec – 1 Jan
8-10 wk
26 Feb
4 wk before
30 Mar
1 wk after
Petunia
Petunia
Fleece
7 Feb – 7 Mar
8-12 wk
2 May
6 wk after
Scabious
Scabiosa atropurpurea
24 Feb – 10 Mar
6-8 wk
21 Apr
5 wk after
2 May
6 wk after
Zinnia
Zinnia elegans
28 Mar – 11 Apr
4-6 wk
9 May
8 wk after
Common morning glory
Ipomoea purpurea
Fleece
12 – 26 Apr
3-5 wk
17 May
8 wk after
Cosmos
Cosmos bipinnatus
28 Mar – 11 Apr
4-6 wk
9 May
8 wk after
2 May
6 wk after
Scarlet milkweed
Asclepias curassavica
Greenhouse
22 Feb – 22 Mar
8-12 wk
17 May
8 wk after
Bee balm
Monarda didyma
28 Dec – 25 Jan
8-12 wk
22 Mar
Vid frost
16 Apr
4 wk after
Yarrow
Achillea millefolium
10 – 24 Jan
6-8 wk
7 Mar
3 wk before
4 Apr
2 wk after
Safflower
Carthamus tinctorius
7 Mar
3 wk before
18 Mar
1 wk before
Iceland poppy
Papaver nudicaule
1 – 15 Jan
6-8 wk
26 Feb
4 wk before
14 Mar
2 wk before
Bishop's flower
Ammi majus
19 Feb – 5 Mar
4-6 wk
2 Apr
2 wk after
4 Apr
2 wk after
Drumsticks
Pycnosorus globosus
Greenhouse
7 – 21 Feb
10-12 wk
2 May
6 wk after
Sunflower
Helianthus annuus
Fleece
4 – 11 Apr
3-4 wk
2 May
6 wk after
4 Apr
2 wk after
China aster
Callistephus chinensis
Fleece
7 – 21 Mar
6-8 wk
2 May
6 wk after
17 Apr
4 wk after
Annual phlox
Phlox drummondii
2 – 16 Mar
6-8 wk
27 Apr
6 wk after
2 May
6 wk after
Hollyhock
Alcea rosea
10 – 24 Jan
6-8 wk
7 Mar
3 wk before
4 Apr
2 wk after
Delphinium
Delphinium elatum
14 Jan – 11 Feb
8-12 wk
8 Apr
3 wk after
16 Apr
4 wk after
African marigold
Tagetes erecta
14 – 28 Mar
6-8 wk
9 May
8 wk after
Black-eyed Susan
Rudbeckia hirta
24 Feb – 10 Mar
6-8 wk
21 Apr
5 wk after
2 May
6 wk after
Woodland sage
Salvia nemorosa
17 – 31 Jan
8-10 wk
28 Mar
1 wk after
16 Apr
4 wk after
Black-eyed susan vine
Thunbergia alata
Fleece
8 Mar – 5 Apr
6-10 wk
17 May
8 wk after
California goldenpoppy
Eschscholzia californica
18 Mar
1 wk before
Painted tongue
Salpiglossis sinuata
28 Feb – 14 Mar
8-10 wk
9 May
8 wk after
Water forget-me-not
Myosotis scorpioides
10 – 24 Jan
6-8 wk
7 Mar
3 wk before
4 Apr
2 wk after
Current date Soon Date passed