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Rel. frost
Last spring frost (0°C) 6 Apr Normal year · 20 years of data
Frost-free season 228 days 6 Apr – 20 Nov
Probability that frost is over

50% = 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)
20 Mar – 3 Apr
5-7 wk
8 May
5 wk after
31 Mar
1 wk before
Broccoli
Brassica oleracea (Italica-gruppen)
15 – 29 Mar
4-6 wk
26 Apr
3 wk after
31 Mar
1 wk before
Chili pepper
Capsicum annuum
Fleece
9 Mar – 6 Apr
8-12 wk
1 Jun
8 wk after
Kale
Brassica oleracea (Curly Kale-gruppen)
17 – 31 Jan
5-7 wk
7 Mar
4 wk before
24 Mar
2 wk before
Cucumber
Cucumis sativus
15 – 22 May
3-4 wk
12 Jun
10 wk after
Florence Fennel
Foeniculum vulgare
Fleece
27 Apr – 4 May
4-5 wk
1 Jun
8 wk after
2 May
4 wk after
Butter bean
Phaseolus lunatus
Greenhouse
19 – 26 Apr
3-4 wk
17 May
6 wk after
Onion
Allium cepa (Cepa-gruppen)
12 Jan – 9 Feb
8-12 wk
6 Apr
Vid frost
19 Apr
2 wk after
Onion (sets)
Allium cepa (Cepa-gruppen)
19 Apr
2 wk after
19 Apr
2 wk after
Sweetcorn
Zea mays
Fleece
24 Apr – 1 May
3-4 wk
22 May
7 wk after
Chard
Beta vulgaris (Flavescens-gruppen)
10 – 17 Apr
3-4 wk
8 May
5 wk after
19 Apr
2 wk after
Carrot
Daucus carota subsp. sativus var. sativus
24 Mar
2 wk before
Cavolo nero
Brassica oleracea (Palm Kale-gruppen)
17 – 31 Jan
5-7 wk
7 Mar
4 wk before
24 Mar
2 wk before
Potato
Solanum tuberosum
28 Feb – 14 Mar
4-6 wk
11 Apr
1 wk after
11 Apr
1 wk after
Ornamental Kale
Brassica oleracea (Ornamental-gruppen)
17 – 31 Jan
5-7 wk
7 Mar
4 wk before
31 Mar
1 wk before
Pumpkin
Cucurbita pepo
15 – 22 May
3-4 wk
12 Jun
10 wk after
Beetroot
Beta vulgaris (Conditiva-gruppen)
10 – 17 Apr
3-4 wk
8 May
5 wk after
19 Apr
2 wk after
Red Cabbage
Brassica oleracea (Red Cabbage-gruppen)
15 – 29 Mar
4-6 wk
26 Apr
3 wk after
Lettuce
Lactuca sativa
28 Feb – 7 Mar
3-4 wk
28 Mar
1 wk before
31 Mar
1 wk before
Savoy Cabbage
Brassica oleracea (Savoy Cabbage-gruppen)
14 – 28 Feb
4-6 wk
28 Mar
1 wk before
Shallot (bulbs)
Allium cepa (Aggregatum-gruppen)
24 Feb – 10 Mar
2-4 wk
24 Mar
2 wk before
24 Mar
2 wk before
Shallot (sets)
Allium cepa (Aggregatum-gruppen)
31 Mar
1 wk before
31 Mar
1 wk before
Spinach
Spinacia oleracea
17 – 24 Feb
3-4 wk
17 Mar
3 wk before
17 Mar
3 wk before
Sweet potato
Ipomoea batatas
8 – 22 May
4-6 wk
19 Jun
11 wk after
Tomato
Solanum lycopersicum
6 – 20 Apr
6-8 wk
1 Jun
8 wk after
Tomatillo
Physalis ixocarpa
French bean
Phaseolus vulgaris
4 – 18 May
2-4 wk
1 Jun
8 wk after
17 May
6 wk after
White Cabbage
Brassica oleracea (White Cabbage-gruppen)
15 – 29 Mar
4-6 wk
26 Apr
3 wk after
Pea
Pisum sativum
17 – 24 Feb
3-4 wk
17 Mar
3 wk before
31 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
10 – 24 Apr
4-6 wk
22 May
7 wk after
Lemon balm
Melissa officinalis
26 Jan – 9 Feb
8-10 wk
6 Apr
Vid frost
2 May
4 wk after
Dill
Anethum graveolens
31 Mar
1 wk before
Chives
Allium schoenoprasum
10 – 24 Jan
6-8 wk
7 Mar
4 wk before
31 Mar
1 wk before
Spearmint
Mentha spicata
23 Dec – 20 Jan
8-12 wk
17 Mar
3 wk before
2 May
4 wk after
Coriander
Coriandrum sativum
19 Apr
2 wk after
Sage
Salvia officinalis
27 Feb – 13 Mar
8-10 wk
8 May
5 wk after
Thyme
Thymus vulgaris
15 Feb – 1 Mar
8-10 wk
26 Apr
3 wk after
Oregano
Origanum vulgare
18 Feb – 4 Mar
6-8 wk
15 Apr
1 wk after
2 May
4 wk after
Parsley
Petroselinum crispum
20 Jan – 3 Feb
6-8 wk
17 Mar
3 wk before
31 Mar
1 wk before
Rosemary
Salvia rosmarinus
30 Jan – 27 Feb
10-14 wk
8 May
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
4 – 11 May
3-4 wk
1 Jun
8 wk after
Cornflower
Centaurea cyanus
17 Mar
3 wk before
31 Mar
1 wk before
Statice
Limonium sinuatum
23 Mar – 6 Apr
8-10 wk
1 Jun
8 wk after
Sweet William
Dianthus barbatus
20 Jan – 3 Feb
6-8 wk
17 Mar
3 wk before
11 Apr
1 wk after
Snow-on-the-mountain
Euphorbia marginata
6 – 20 Apr
6-8 wk
1 Jun
8 wk after
19 Jun
11 wk after
Dahlia
Dahlia × pinnata
30 Mar – 13 Apr
6-8 wk
25 May
7 wk after
Dahlia (tubers)
Dahlia × pinnata
7 Mar – 4 Apr
4-8 wk
2 May
4 wk after
2 May
4 wk after
Foxglove
Digitalis purpurea
6 – 20 Jan
8-10 wk
17 Mar
3 wk before
19 Apr
2 wk after
Busy lizzie
Impatiens walleriana
20 Mar – 17 Apr
8-12 wk
12 Jun
10 wk after
Creeping zinnia
Sanvitalia procumbens
6 – 20 Apr
6-8 wk
1 Jun
8 wk after
Hyacinth bean
Dolichos lablab
Greenhouse
20 Apr – 4 May
4-6 wk
1 Jun
8 wk after
Chinese lantern
Physalis alkekengi
27 Feb – 13 Mar
8-10 wk
8 May
5 wk after
Love in a mist
Nigella damascena
31 Mar
1 wk before
Strawflower
Xerochrysum bracteatum
6 – 20 Apr
6-8 wk
1 Jun
8 wk after
19 Jun
11 wk after
Tall verbena
Verbena bonariensis
13 Feb – 13 Mar
8-12 wk
8 May
5 wk after
Cardoon
Cynara cardunculus
Fleece
22 Feb – 22 Mar
8-12 wk
17 May
6 wk after
Regal-foxtail
Ptilotus nobilis
Fleece
9 Mar – 6 Apr
8-12 wk
1 Jun
8 wk after
Globe amaranth
Gomphrena globosa
Fleece
6 – 20 Apr
6-8 wk
1 Jun
8 wk after
Corn poppy
Papaver rhoeas
31 Mar
1 wk before
Snapdragon
Antirrhinum majus
3 – 31 Jan
8-12 wk
28 Mar
1 wk before
11 Apr
1 wk after
Flossflower
Ageratum houstonianum
Fleece
23 Mar – 6 Apr
8-10 wk
1 Jun
8 wk after
Sweet pea
Lathyrus odoratus
20 Jan – 10 Feb
5-8 wk
17 Mar
3 wk before
Stock
Matthiola incana
31 Jan – 14 Feb
6-8 wk
28 Mar
1 wk before
19 Apr
2 wk after
Wormwood
Artemisia absinthium
20 Jan – 3 Feb
6-8 wk
17 Mar
3 wk before
19 Apr
2 wk after
Mexican sunflower
Tithonia rotundifolia
Fleece
20 Apr – 4 May
4-6 wk
1 Jun
8 wk after
Pansy
Viola × wittrockiana
27 Dec – 10 Jan
8-10 wk
7 Mar
4 wk before
11 Apr
1 wk after
Petunia
Petunia
9 Mar – 6 Apr
8-12 wk
1 Jun
8 wk after
Scabious
Scabiosa atropurpurea
13 – 27 Mar
6-8 wk
8 May
5 wk after
17 May
6 wk after
Zinnia
Zinnia elegans
20 Apr – 4 May
4-6 wk
1 Jun
8 wk after
Common morning glory
Ipomoea purpurea
8 – 22 May
3-5 wk
12 Jun
10 wk after
Cosmos
Cosmos bipinnatus
20 Apr – 4 May
4-6 wk
1 Jun
8 wk after
17 May
6 wk after
Scarlet milkweed
Asclepias curassavica
Fleece
20 Mar – 17 Apr
8-12 wk
12 Jun
10 wk after
Bee balm
Monarda didyma
12 Jan – 9 Feb
8-12 wk
6 Apr
Vid frost
2 May
4 wk after
Yarrow
Achillea millefolium
20 Jan – 3 Feb
6-8 wk
17 Mar
3 wk before
19 Apr
2 wk after
Safflower
Carthamus tinctorius
17 Mar
3 wk before
31 Mar
1 wk before
Iceland poppy
Papaver nudicaule
10 – 24 Jan
6-8 wk
7 Mar
4 wk before
24 Mar
2 wk before
Bishop's flower
Ammi majus
10 – 24 Mar
4-6 wk
21 Apr
2 wk after
19 Apr
2 wk after
Drumsticks
Pycnosorus globosus
Fleece
9 – 23 Mar
10-12 wk
1 Jun
8 wk after
Sunflower
Helianthus annuus
4 – 11 May
3-4 wk
1 Jun
8 wk after
2 May
4 wk after
China aster
Callistephus chinensis
6 – 20 Apr
6-8 wk
1 Jun
8 wk after
17 May
6 wk after
Annual phlox
Phlox drummondii
22 Mar – 5 Apr
6-8 wk
17 May
6 wk after
17 May
6 wk after
Hollyhock
Alcea rosea
20 Jan – 3 Feb
6-8 wk
17 Mar
3 wk before
19 Apr
2 wk after
Delphinium
Delphinium elatum
1 Feb – 1 Mar
8-12 wk
26 Apr
3 wk after
2 May
4 wk after
African marigold
Tagetes erecta
6 – 20 Apr
6-8 wk
1 Jun
8 wk after
Black-eyed Susan
Rudbeckia hirta
13 – 27 Mar
6-8 wk
8 May
5 wk after
17 May
6 wk after
Woodland sage
Salvia nemorosa
4 – 18 Feb
8-10 wk
15 Apr
1 wk after
2 May
4 wk after
Black-eyed susan vine
Thunbergia alata
Fleece
23 Mar – 20 Apr
6-10 wk
1 Jun
8 wk after
California goldenpoppy
Eschscholzia californica
31 Mar
1 wk before
Painted tongue
Salpiglossis sinuata
23 Mar – 6 Apr
8-10 wk
1 Jun
8 wk after
Water forget-me-not
Myosotis scorpioides
20 Jan – 3 Feb
6-8 wk
17 Mar
3 wk before
19 Apr
2 wk after
Current date Soon Date passed