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Rel. frost
Last spring frost (0°C) 29 Mar Frost 3 of 4 years · 20 years of data
Frost-free season 231 days 29 Mar – 15 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)
12 – 26 Mar
5-7 wk
30 Apr
5 wk after
23 Mar
1 wk before
Broccoli
Brassica oleracea (Italica-gruppen)
7 – 21 Mar
4-6 wk
18 Apr
3 wk after
23 Mar
1 wk before
Chili pepper
Capsicum annuum
Fleece
1 – 29 Mar
8-12 wk
24 May
8 wk after
Kale
Brassica oleracea (Curly Kale-gruppen)
9 – 23 Jan
5-7 wk
27 Feb
4 wk before
16 Mar
2 wk before
Cucumber
Cucumis sativus
7 – 14 May
3-4 wk
4 Jun
10 wk after
Florence Fennel
Foeniculum vulgare
Fleece
19 – 26 Apr
4-5 wk
24 May
8 wk after
24 Apr
4 wk after
Butter bean
Phaseolus lunatus
Greenhouse
11 – 18 Apr
3-4 wk
9 May
6 wk after
Onion
Allium cepa (Cepa-gruppen)
4 Jan – 1 Feb
8-12 wk
29 Mar
Vid frost
11 Apr
2 wk after
Onion (sets)
Allium cepa (Cepa-gruppen)
11 Apr
2 wk after
11 Apr
2 wk after
Sweetcorn
Zea mays
Fleece
16 – 23 Apr
3-4 wk
14 May
7 wk after
Chard
Beta vulgaris (Flavescens-gruppen)
2 – 9 Apr
3-4 wk
30 Apr
5 wk after
11 Apr
2 wk after
Carrot
Daucus carota subsp. sativus var. sativus
16 Mar
2 wk before
Cavolo nero
Brassica oleracea (Palm Kale-gruppen)
9 – 23 Jan
5-7 wk
27 Feb
4 wk before
16 Mar
2 wk before
Potato
Solanum tuberosum
20 Feb – 6 Mar
4-6 wk
3 Apr
1 wk after
3 Apr
1 wk after
Ornamental Kale
Brassica oleracea (Ornamental-gruppen)
9 – 23 Jan
5-7 wk
27 Feb
4 wk before
23 Mar
1 wk before
Pumpkin
Cucurbita pepo
7 – 14 May
3-4 wk
4 Jun
10 wk after
Beetroot
Beta vulgaris (Conditiva-gruppen)
2 – 9 Apr
3-4 wk
30 Apr
5 wk after
11 Apr
2 wk after
Red Cabbage
Brassica oleracea (Red Cabbage-gruppen)
7 – 21 Mar
4-6 wk
18 Apr
3 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)
16 Feb – 2 Mar
2-4 wk
16 Mar
2 wk before
16 Mar
2 wk before
Shallot (sets)
Allium cepa (Aggregatum-gruppen)
23 Mar
1 wk before
23 Mar
1 wk before
Spinach
Spinacia oleracea
9 – 16 Feb
3-4 wk
9 Mar
3 wk before
9 Mar
3 wk before
Sweet potato
Ipomoea batatas
30 Apr – 14 May
4-6 wk
11 Jun
11 wk after
Tomato
Solanum lycopersicum
29 Mar – 12 Apr
6-8 wk
24 May
8 wk after
Tomatillo
Physalis ixocarpa
French bean
Phaseolus vulgaris
26 Apr – 10 May
2-4 wk
24 May
8 wk after
9 May
6 wk after
White Cabbage
Brassica oleracea (White Cabbage-gruppen)
7 – 21 Mar
4-6 wk
18 Apr
3 wk after
Pea
Pisum sativum
9 – 16 Feb
3-4 wk
9 Mar
3 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
Fleece
2 – 16 Apr
4-6 wk
14 May
7 wk after
Lemon balm
Melissa officinalis
18 Jan – 1 Feb
8-10 wk
29 Mar
Vid frost
24 Apr
4 wk after
Dill
Anethum graveolens
23 Mar
1 wk before
Chives
Allium schoenoprasum
2 – 16 Jan
6-8 wk
27 Feb
4 wk before
23 Mar
1 wk before
Spearmint
Mentha spicata
15 Dec – 12 Jan
8-12 wk
9 Mar
3 wk before
24 Apr
4 wk after
Coriander
Coriandrum sativum
11 Apr
2 wk after
Sage
Salvia officinalis
19 Feb – 5 Mar
8-10 wk
30 Apr
5 wk after
Thyme
Thymus vulgaris
7 – 21 Feb
8-10 wk
18 Apr
3 wk after
Oregano
Origanum vulgare
10 – 24 Feb
6-8 wk
7 Apr
1 wk after
24 Apr
4 wk after
Parsley
Petroselinum crispum
12 – 26 Jan
6-8 wk
9 Mar
3 wk before
23 Mar
1 wk before
Rosemary
Salvia rosmarinus
22 Jan – 19 Feb
10-14 wk
30 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
26 Apr – 3 May
3-4 wk
24 May
8 wk after
Cornflower
Centaurea cyanus
9 Mar
3 wk before
23 Mar
1 wk before
Statice
Limonium sinuatum
15 – 29 Mar
8-10 wk
24 May
8 wk after
Sweet William
Dianthus barbatus
12 – 26 Jan
6-8 wk
9 Mar
3 wk before
3 Apr
1 wk after
Snow-on-the-mountain
Euphorbia marginata
29 Mar – 12 Apr
6-8 wk
24 May
8 wk after
11 Jun
11 wk after
Dahlia
Dahlia × pinnata
22 Mar – 5 Apr
6-8 wk
17 May
7 wk after
Dahlia (tubers)
Dahlia × pinnata
27 Feb – 27 Mar
4-8 wk
24 Apr
4 wk after
24 Apr
4 wk after
Foxglove
Digitalis purpurea
29 Dec – 12 Jan
8-10 wk
9 Mar
3 wk before
11 Apr
2 wk after
Busy lizzie
Impatiens walleriana
12 Mar – 9 Apr
8-12 wk
4 Jun
10 wk after
Creeping zinnia
Sanvitalia procumbens
29 Mar – 12 Apr
6-8 wk
24 May
8 wk after
Hyacinth bean
Dolichos lablab
Greenhouse
12 – 26 Apr
4-6 wk
24 May
8 wk after
Chinese lantern
Physalis alkekengi
19 Feb – 5 Mar
8-10 wk
30 Apr
5 wk after
Love in a mist
Nigella damascena
23 Mar
1 wk before
Strawflower
Xerochrysum bracteatum
29 Mar – 12 Apr
6-8 wk
24 May
8 wk after
11 Jun
11 wk after
Tall verbena
Verbena bonariensis
5 Feb – 5 Mar
8-12 wk
30 Apr
5 wk after
Cardoon
Cynara cardunculus
Fleece
14 Feb – 14 Mar
8-12 wk
9 May
6 wk after
Regal-foxtail
Ptilotus nobilis
Fleece
1 – 29 Mar
8-12 wk
24 May
8 wk after
Globe amaranth
Gomphrena globosa
Fleece
29 Mar – 12 Apr
6-8 wk
24 May
8 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
3 Apr
1 wk after
Flossflower
Ageratum houstonianum
Fleece
15 – 29 Mar
8-10 wk
24 May
8 wk after
Sweet pea
Lathyrus odoratus
12 Jan – 2 Feb
5-8 wk
9 Mar
3 wk before
Stock
Matthiola incana
23 Jan – 6 Feb
6-8 wk
20 Mar
1 wk before
11 Apr
2 wk after
Wormwood
Artemisia absinthium
12 – 26 Jan
6-8 wk
9 Mar
3 wk before
11 Apr
2 wk after
Mexican sunflower
Tithonia rotundifolia
Fleece
12 – 26 Apr
4-6 wk
24 May
8 wk after
Pansy
Viola × wittrockiana
19 Dec – 2 Jan
8-10 wk
27 Feb
4 wk before
3 Apr
1 wk after
Petunia
Petunia
1 – 29 Mar
8-12 wk
24 May
8 wk after
Scabious
Scabiosa atropurpurea
5 – 19 Mar
6-8 wk
30 Apr
5 wk after
9 May
6 wk after
Zinnia
Zinnia elegans
12 – 26 Apr
4-6 wk
24 May
8 wk after
Common morning glory
Ipomoea purpurea
Fleece
19 Apr – 3 May
3-5 wk
24 May
8 wk after
Cosmos
Cosmos bipinnatus
12 – 26 Apr
4-6 wk
24 May
8 wk after
9 May
6 wk after
Scarlet milkweed
Asclepias curassavica
Fleece
12 Mar – 9 Apr
8-12 wk
4 Jun
10 wk after
Bee balm
Monarda didyma
4 Jan – 1 Feb
8-12 wk
29 Mar
Vid frost
24 Apr
4 wk after
Yarrow
Achillea millefolium
12 – 26 Jan
6-8 wk
9 Mar
3 wk before
11 Apr
2 wk after
Safflower
Carthamus tinctorius
9 Mar
3 wk before
23 Mar
1 wk before
Iceland poppy
Papaver nudicaule
2 – 16 Jan
6-8 wk
27 Feb
4 wk before
16 Mar
2 wk before
Bishop's flower
Ammi majus
2 – 16 Mar
4-6 wk
13 Apr
2 wk after
11 Apr
2 wk after
Drumsticks
Pycnosorus globosus
Fleece
1 – 15 Mar
10-12 wk
24 May
8 wk after
Sunflower
Helianthus annuus
26 Apr – 3 May
3-4 wk
24 May
8 wk after
24 Apr
4 wk after
China aster
Callistephus chinensis
29 Mar – 12 Apr
6-8 wk
24 May
8 wk after
9 May
6 wk after
Annual phlox
Phlox drummondii
14 – 28 Mar
6-8 wk
9 May
6 wk after
9 May
6 wk after
Hollyhock
Alcea rosea
12 – 26 Jan
6-8 wk
9 Mar
3 wk before
11 Apr
2 wk after
Delphinium
Delphinium elatum
24 Jan – 21 Feb
8-12 wk
18 Apr
3 wk after
24 Apr
4 wk after
African marigold
Tagetes erecta
29 Mar – 12 Apr
6-8 wk
24 May
8 wk after
Black-eyed Susan
Rudbeckia hirta
5 – 19 Mar
6-8 wk
30 Apr
5 wk after
9 May
6 wk after
Woodland sage
Salvia nemorosa
27 Jan – 10 Feb
8-10 wk
7 Apr
1 wk after
24 Apr
4 wk after
Black-eyed susan vine
Thunbergia alata
Fleece
15 Mar – 12 Apr
6-10 wk
24 May
8 wk after
California goldenpoppy
Eschscholzia californica
23 Mar
1 wk before
Painted tongue
Salpiglossis sinuata
15 – 29 Mar
8-10 wk
24 May
8 wk after
Water forget-me-not
Myosotis scorpioides
12 – 26 Jan
6-8 wk
9 Mar
3 wk before
11 Apr
2 wk after
Current date Soon Date passed