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Rel. frost
Last spring frost (0°C) 25 Mar Frost 9 of 10 years · 20 years of data
Frost-free season 215 days 25 Mar – 26 Oct
Probability that frost is over

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