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Rel. frost
Last spring frost (0°C) 27 Mar Frost 3 of 4 years · 20 years of data
Frost-free season 225 days 27 Mar – 7 Nov
Probability that frost is over

25% = Half of years are frost-free by this date. More about frost & season →

Custom date

Vegetables

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