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Rel. frost
Last spring frost (0°C) 19 Mar Frost 9 of 10 years · 20 years of data
Frost-free season 224 days 19 Mar – 29 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)
2 – 16 Mar
5-7 wk
20 Apr
5 wk after
13 Mar
1 wk before
Broccoli
Brassica oleracea (Italica-gruppen)
25 Feb – 11 Mar
4-6 wk
8 Apr
3 wk after
13 Mar
1 wk before
Chili pepper
Capsicum annuum
Fleece
19 Feb – 19 Mar
8-12 wk
14 May
8 wk after
Kale
Brassica oleracea (Curly Kale-gruppen)
30 Dec – 13 Jan
5-7 wk
17 Feb
4 wk before
6 Mar
2 wk before
Cucumber
Cucumis sativus
Fleece
16 – 23 Apr
3-4 wk
14 May
8 wk after
Florence Fennel
Foeniculum vulgare
Fleece
9 – 16 Apr
4-5 wk
14 May
8 wk after
14 Apr
4 wk after
Butter bean
Phaseolus lunatus
Fleece
16 – 23 Apr
3-4 wk
14 May
8 wk after
Onion
Allium cepa (Cepa-gruppen)
25 Dec – 22 Jan
8-12 wk
19 Mar
Vid frost
1 Apr
2 wk after
Onion (sets)
Allium cepa (Cepa-gruppen)
1 Apr
2 wk after
1 Apr
2 wk after
Sweetcorn
Zea mays
Fleece
6 – 13 Apr
3-4 wk
4 May
7 wk after
Chard
Beta vulgaris (Flavescens-gruppen)
23 – 30 Mar
3-4 wk
20 Apr
5 wk after
1 Apr
2 wk after
Carrot
Daucus carota subsp. sativus var. sativus
6 Mar
2 wk before
Cavolo nero
Brassica oleracea (Palm Kale-gruppen)
30 Dec – 13 Jan
5-7 wk
17 Feb
4 wk before
6 Mar
2 wk before
Potato
Solanum tuberosum
10 – 24 Feb
4-6 wk
24 Mar
1 wk after
24 Mar
1 wk after
Ornamental Kale
Brassica oleracea (Ornamental-gruppen)
30 Dec – 13 Jan
5-7 wk
17 Feb
4 wk before
13 Mar
1 wk before
Pumpkin
Cucurbita pepo
Fleece
16 – 23 Apr
3-4 wk
14 May
8 wk after
Beetroot
Beta vulgaris (Conditiva-gruppen)
23 – 30 Mar
3-4 wk
20 Apr
5 wk after
1 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
10 – 17 Feb
3-4 wk
10 Mar
1 wk before
13 Mar
1 wk before
Savoy Cabbage
Brassica oleracea (Savoy Cabbage-gruppen)
27 Jan – 10 Feb
4-6 wk
10 Mar
1 wk before
Shallot (bulbs)
Allium cepa (Aggregatum-gruppen)
6 – 20 Feb
2-4 wk
6 Mar
2 wk before
6 Mar
2 wk before
Shallot (sets)
Allium cepa (Aggregatum-gruppen)
13 Mar
1 wk before
13 Mar
1 wk before
Spinach
Spinacia oleracea
30 Jan – 6 Feb
3-4 wk
27 Feb
3 wk before
27 Feb
3 wk before
Sweet potato
Ipomoea batatas
20 Apr – 4 May
4-6 wk
1 Jun
11 wk after
Tomato
Solanum lycopersicum
19 Mar – 2 Apr
6-8 wk
14 May
8 wk after
Tomatillo
Physalis ixocarpa
French bean
Phaseolus vulgaris
16 – 30 Apr
2-4 wk
14 May
8 wk after
29 Apr
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
30 Jan – 6 Feb
3-4 wk
27 Feb
3 wk before
13 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
20 Apr – 4 May
4-6 wk
1 Jun
11 wk after
Lemon balm
Melissa officinalis
8 – 22 Jan
8-10 wk
19 Mar
Vid frost
14 Apr
4 wk after
Dill
Anethum graveolens
13 Mar
1 wk before
Chives
Allium schoenoprasum
23 Dec – 6 Jan
6-8 wk
17 Feb
4 wk before
13 Mar
1 wk before
Spearmint
Mentha spicata
5 Dec – 2 Jan
8-12 wk
27 Feb
3 wk before
14 Apr
4 wk after
Coriander
Coriandrum sativum
1 Apr
2 wk after
Sage
Salvia officinalis
9 – 23 Feb
8-10 wk
20 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
14 Apr
4 wk after
Parsley
Petroselinum crispum
2 – 16 Jan
6-8 wk
27 Feb
3 wk before
13 Mar
1 wk before
Rosemary
Salvia rosmarinus
12 Jan – 9 Feb
10-14 wk
20 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
16 – 23 Apr
3-4 wk
14 May
8 wk after
Cornflower
Centaurea cyanus
27 Feb
3 wk before
13 Mar
1 wk before
Statice
Limonium sinuatum
5 – 19 Mar
8-10 wk
14 May
8 wk after
Sweet William
Dianthus barbatus
2 – 16 Jan
6-8 wk
27 Feb
3 wk before
24 Mar
1 wk after
Snow-on-the-mountain
Euphorbia marginata
19 Mar – 2 Apr
6-8 wk
14 May
8 wk after
1 Jun
11 wk after
Dahlia
Dahlia × pinnata
12 – 26 Mar
6-8 wk
7 May
7 wk after
Dahlia (tubers)
Dahlia × pinnata
17 Feb – 17 Mar
4-8 wk
14 Apr
4 wk after
14 Apr
4 wk after
Foxglove
Digitalis purpurea
19 Dec – 2 Jan
8-10 wk
27 Feb
3 wk before
1 Apr
2 wk after
Busy lizzie
Impatiens walleriana
2 – 30 Mar
8-12 wk
25 May
10 wk after
Creeping zinnia
Sanvitalia procumbens
19 Mar – 2 Apr
6-8 wk
14 May
8 wk after
Hyacinth bean
Dolichos lablab
Greenhouse
2 – 16 Apr
4-6 wk
14 May
8 wk after
Chinese lantern
Physalis alkekengi
9 – 23 Feb
8-10 wk
20 Apr
5 wk after
Love in a mist
Nigella damascena
13 Mar
1 wk before
Strawflower
Xerochrysum bracteatum
19 Mar – 2 Apr
6-8 wk
14 May
8 wk after
1 Jun
11 wk after
Tall verbena
Verbena bonariensis
26 Jan – 23 Feb
8-12 wk
20 Apr
5 wk after
Cardoon
Cynara cardunculus
Greenhouse
20 Jan – 17 Feb
8-12 wk
14 Apr
4 wk after
Regal-foxtail
Ptilotus nobilis
Fleece
19 Feb – 19 Mar
8-12 wk
14 May
8 wk after
Globe amaranth
Gomphrena globosa
Fleece
19 Mar – 2 Apr
6-8 wk
14 May
8 wk after
Corn poppy
Papaver rhoeas
13 Mar
1 wk before
Snapdragon
Antirrhinum majus
16 Dec – 13 Jan
8-12 wk
10 Mar
1 wk before
24 Mar
1 wk after
Flossflower
Ageratum houstonianum
Fleece
5 – 19 Mar
8-10 wk
14 May
8 wk after
Sweet pea
Lathyrus odoratus
2 – 23 Jan
5-8 wk
27 Feb
3 wk before
Stock
Matthiola incana
13 – 27 Jan
6-8 wk
10 Mar
1 wk before
1 Apr
2 wk after
Wormwood
Artemisia absinthium
2 – 16 Jan
6-8 wk
27 Feb
3 wk before
1 Apr
2 wk after
Mexican sunflower
Tithonia rotundifolia
Fleece
2 – 16 Apr
4-6 wk
14 May
8 wk after
Pansy
Viola × wittrockiana
9 – 23 Dec
8-10 wk
17 Feb
4 wk before
24 Mar
1 wk after
Petunia
Petunia
19 Feb – 19 Mar
8-12 wk
14 May
8 wk after
Scabious
Scabiosa atropurpurea
23 Feb – 9 Mar
6-8 wk
20 Apr
5 wk after
29 Apr
6 wk after
Zinnia
Zinnia elegans
2 – 16 Apr
4-6 wk
14 May
8 wk after
Common morning glory
Ipomoea purpurea
Fleece
9 – 23 Apr
3-5 wk
14 May
8 wk after
Cosmos
Cosmos bipinnatus
2 – 16 Apr
4-6 wk
14 May
8 wk after
29 Apr
6 wk after
Scarlet milkweed
Asclepias curassavica
Greenhouse
19 Feb – 19 Mar
8-12 wk
14 May
8 wk after
Bee balm
Monarda didyma
25 Dec – 22 Jan
8-12 wk
19 Mar
Vid frost
14 Apr
4 wk after
Yarrow
Achillea millefolium
2 – 16 Jan
6-8 wk
27 Feb
3 wk before
1 Apr
2 wk after
Safflower
Carthamus tinctorius
27 Feb
3 wk before
13 Mar
1 wk before
Iceland poppy
Papaver nudicaule
23 Dec – 6 Jan
6-8 wk
17 Feb
4 wk before
6 Mar
2 wk before
Bishop's flower
Ammi majus
20 Feb – 6 Mar
4-6 wk
3 Apr
2 wk after
1 Apr
2 wk after
Drumsticks
Pycnosorus globosus
Fleece
19 Feb – 5 Mar
10-12 wk
14 May
8 wk after
Sunflower
Helianthus annuus
16 – 23 Apr
3-4 wk
14 May
8 wk after
14 Apr
4 wk after
China aster
Callistephus chinensis
19 Mar – 2 Apr
6-8 wk
14 May
8 wk after
29 Apr
6 wk after
Annual phlox
Phlox drummondii
4 – 18 Mar
6-8 wk
29 Apr
6 wk after
29 Apr
6 wk after
Hollyhock
Alcea rosea
2 – 16 Jan
6-8 wk
27 Feb
3 wk before
1 Apr
2 wk after
Delphinium
Delphinium elatum
14 Jan – 11 Feb
8-12 wk
8 Apr
3 wk after
14 Apr
4 wk after
African marigold
Tagetes erecta
19 Mar – 2 Apr
6-8 wk
14 May
8 wk after
Black-eyed Susan
Rudbeckia hirta
23 Feb – 9 Mar
6-8 wk
20 Apr
5 wk after
29 Apr
6 wk after
Woodland sage
Salvia nemorosa
17 – 31 Jan
8-10 wk
28 Mar
1 wk after
14 Apr
4 wk after
Black-eyed susan vine
Thunbergia alata
Fleece
5 Mar – 2 Apr
6-10 wk
14 May
8 wk after
California goldenpoppy
Eschscholzia californica
13 Mar
1 wk before
Painted tongue
Salpiglossis sinuata
5 – 19 Mar
8-10 wk
14 May
8 wk after
Water forget-me-not
Myosotis scorpioides
2 – 16 Jan
6-8 wk
27 Feb
3 wk before
1 Apr
2 wk after
Current date Soon Date passed