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Rel. frost
Last spring frost (0°C) 10 Mar Frost 3 of 4 years · 20 years of data
Frost-free season 259 days 10 Mar – 24 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)
19 Feb – 5 Mar
5-7 wk
9 Apr
5 wk after
6 Mar
1 wk before
Broccoli
Brassica oleracea (Italica-gruppen)
13 – 27 Feb
4-6 wk
27 Mar
3 wk after
6 Mar
1 wk before
Chili pepper
Capsicum annuum
10 Feb – 10 Mar
8-12 wk
5 May
10 wk after
Kale
Brassica oleracea (Curly Kale-gruppen)
27 Dec – 10 Jan
5-7 wk
14 Feb
4 wk before
2 Mar
2 wk before
Cucumber
Cucumis sativus
7 – 14 Apr
3-4 wk
5 May
10 wk after
Florence Fennel
Foeniculum vulgare
31 Mar – 7 Apr
4-5 wk
5 May
10 wk after
20 Apr
6 wk after
Butter bean
Phaseolus lunatus
Season too short
23 – 30 Mar
3-4 wk
20 Apr
6 wk after
Onion
Allium cepa (Cepa-gruppen)
16 Dec – 13 Jan
8-12 wk
10 Mar
Vid frost
23 Mar
2 wk after
Onion (sets)
Allium cepa (Cepa-gruppen)
Season too short
25 Feb
2 wk before
Sweetcorn
Zea mays
Season too short
15 – 22 Mar
3-4 wk
12 Apr
5 wk after
Chard
Beta vulgaris (Flavescens-gruppen)
12 – 19 Mar
3-4 wk
9 Apr
5 wk after
23 Mar
2 wk after
Carrot
Daucus carota subsp. sativus var. sativus
2 Mar
2 wk before
Cavolo nero
Brassica oleracea (Palm Kale-gruppen)
27 Dec – 10 Jan
5-7 wk
14 Feb
4 wk before
2 Mar
2 wk before
Potato
Solanum tuberosum
Season too short
7 – 21 Jan
4-6 wk
18 Feb
3 wk before
18 Feb
3 wk before
Ornamental Kale
Brassica oleracea (Ornamental-gruppen)
27 Dec – 10 Jan
5-7 wk
14 Feb
4 wk before
6 Mar
1 wk before
Pumpkin
Cucurbita pepo
7 – 14 Apr
3-4 wk
5 May
10 wk after
Beetroot
Beta vulgaris (Conditiva-gruppen)
12 – 19 Mar
3-4 wk
9 Apr
5 wk after
23 Mar
2 wk after
Red Cabbage
Brassica oleracea (Red Cabbage-gruppen)
13 – 27 Feb
4-6 wk
27 Mar
3 wk after
Lettuce
Lactuca sativa
3 – 10 Feb
3-4 wk
3 Mar
1 wk before
6 Mar
1 wk before
Savoy Cabbage
Brassica oleracea (Savoy Cabbage-gruppen)
20 Jan – 3 Feb
4-6 wk
3 Mar
1 wk before
Shallot (bulbs)
Allium cepa (Aggregatum-gruppen)
Season too short
26 Dec – 9 Jan
2-4 wk
23 Jan
7 wk before
23 Jan
7 wk before
Shallot (sets)
Allium cepa (Aggregatum-gruppen)
Season too short
4 Feb
5 wk before
Spinach
Spinacia oleracea
26 Jan – 2 Feb
3-4 wk
23 Feb
3 wk before
25 Feb
3 wk before
Sweet potato
Ipomoea batatas
28 Mar – 11 Apr
4-6 wk
9 May
11 wk after
Tomato
Solanum lycopersicum
2 – 16 Mar
6-8 wk
27 Apr
8 wk after
Tomatillo
Physalis ixocarpa
French bean
Phaseolus vulgaris
30 Mar – 13 Apr
2-4 wk
27 Apr
8 wk after
20 Apr
6 wk after
White Cabbage
Brassica oleracea (White Cabbage-gruppen)
13 – 27 Feb
4-6 wk
27 Mar
3 wk after
Pea
Pisum sativum
26 Jan – 2 Feb
3-4 wk
23 Feb
3 wk before
6 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
Season too short
1 – 15 Mar
4-6 wk
12 Apr
5 wk after
Lemon balm
Melissa officinalis
30 Dec – 13 Jan
8-10 wk
10 Mar
Vid frost
4 Apr
4 wk after
Dill
Anethum graveolens
6 Mar
1 wk before
Chives
Allium schoenoprasum
20 Dec – 3 Jan
6-8 wk
14 Feb
4 wk before
6 Mar
1 wk before
Spearmint
Mentha spicata
1 – 29 Dec
8-12 wk
23 Feb
3 wk before
4 Apr
4 wk after
Coriander
Coriandrum sativum
23 Mar
2 wk after
Sage
Salvia officinalis
29 Jan – 12 Feb
8-10 wk
9 Apr
5 wk after
Thyme
Thymus vulgaris
16 – 30 Jan
8-10 wk
27 Mar
3 wk after
Oregano
Origanum vulgare
19 Jan – 2 Feb
6-8 wk
16 Mar
1 wk after
4 Apr
4 wk after
Parsley
Petroselinum crispum
29 Dec – 12 Jan
6-8 wk
23 Feb
3 wk before
6 Mar
1 wk before
Rosemary
Salvia rosmarinus
1 – 29 Jan
10-14 wk
9 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
Fleece
18 – 25 Apr
3-4 wk
16 May
10 wk after
Cornflower
Centaurea cyanus
23 Feb
3 wk before
6 Mar
1 wk before
Statice
Limonium sinuatum
16 Feb – 2 Mar
8-10 wk
27 Apr
8 wk after
Sweet William
Dianthus barbatus
29 Dec – 12 Jan
6-8 wk
23 Feb
3 wk before
18 Mar
1 wk after
Snow-on-the-mountain
Euphorbia marginata
2 – 16 Mar
6-8 wk
27 Apr
8 wk after
20 May
11 wk after
Dahlia
Dahlia × pinnata
25 Feb – 11 Mar
6-8 wk
22 Apr
7 wk after
Dahlia (tubers)
Dahlia × pinnata
Season too short
12 Jan – 9 Feb
4-8 wk
9 Mar
9 Mar
Foxglove
Digitalis purpurea
15 – 29 Dec
8-10 wk
23 Feb
3 wk before
23 Mar
2 wk after
Busy lizzie
Impatiens walleriana
10 Feb – 10 Mar
8-12 wk
5 May
10 wk after
Creeping zinnia
Sanvitalia procumbens
2 – 16 Mar
6-8 wk
27 Apr
8 wk after
Hyacinth bean
Dolichos lablab
Greenhouse
24 Mar – 7 Apr
4-6 wk
5 May
8 wk after
Chinese lantern
Physalis alkekengi
29 Jan – 12 Feb
8-10 wk
9 Apr
5 wk after
Love in a mist
Nigella damascena
6 Mar
1 wk before
Strawflower
Xerochrysum bracteatum
2 – 16 Mar
6-8 wk
27 Apr
8 wk after
20 May
11 wk after
Tall verbena
Verbena bonariensis
15 Jan – 12 Feb
8-12 wk
9 Apr
5 wk after
Cardoon
Cynara cardunculus
Fleece
26 Jan – 23 Feb
8-12 wk
20 Apr
6 wk after
Regal-foxtail
Ptilotus nobilis
10 Feb – 10 Mar
8-12 wk
5 May
10 wk after
Globe amaranth
Gomphrena globosa
10 – 24 Mar
6-8 wk
5 May
10 wk after
Corn poppy
Papaver rhoeas
6 Mar
1 wk before
Snapdragon
Antirrhinum majus
9 Dec – 6 Jan
8-12 wk
3 Mar
1 wk before
18 Mar
1 wk after
Flossflower
Ageratum houstonianum
24 Feb – 10 Mar
8-10 wk
5 May
10 wk after
Sweet pea
Lathyrus odoratus
29 Dec – 19 Jan
5-8 wk
23 Feb
3 wk before
Stock
Matthiola incana
6 – 20 Jan
6-8 wk
3 Mar
1 wk before
23 Mar
2 wk after
Wormwood
Artemisia absinthium
29 Dec – 12 Jan
6-8 wk
23 Feb
3 wk before
23 Mar
2 wk after
Mexican sunflower
Tithonia rotundifolia
24 Mar – 7 Apr
4-6 wk
5 May
10 wk after
Pansy
Viola × wittrockiana
6 – 20 Dec
8-10 wk
14 Feb
4 wk before
18 Mar
1 wk after
Petunia
Petunia
2 Feb – 2 Mar
8-12 wk
27 Apr
8 wk after
Scabious
Scabiosa atropurpurea
12 – 26 Feb
6-8 wk
9 Apr
5 wk after
20 Apr
6 wk after
Zinnia
Zinnia elegans
16 – 30 Mar
4-6 wk
27 Apr
8 wk after
Common morning glory
Ipomoea purpurea
31 Mar – 14 Apr
3-5 wk
5 May
10 wk after
Cosmos
Cosmos bipinnatus
16 – 30 Mar
4-6 wk
27 Apr
8 wk after
20 Apr
6 wk after
Scarlet milkweed
Asclepias curassavica
Fleece
21 Feb – 21 Mar
8-12 wk
16 May
10 wk after
Bee balm
Monarda didyma
16 Dec – 13 Jan
8-12 wk
10 Mar
Vid frost
4 Apr
4 wk after
Yarrow
Achillea millefolium
29 Dec – 12 Jan
6-8 wk
23 Feb
3 wk before
23 Mar
2 wk after
Safflower
Carthamus tinctorius
23 Feb
3 wk before
6 Mar
1 wk before
Iceland poppy
Papaver nudicaule
20 Dec – 3 Jan
6-8 wk
14 Feb
4 wk before
2 Mar
2 wk before
Bishop's flower
Ammi majus
7 – 21 Feb
4-6 wk
21 Mar
2 wk after
23 Mar
2 wk after
Drumsticks
Pycnosorus globosus
Fleece
10 – 24 Feb
10-12 wk
5 May
8 wk after
Sunflower
Helianthus annuus
30 Mar – 6 Apr
3-4 wk
27 Apr
8 wk after
4 Apr
4 wk after
China aster
Callistephus chinensis
2 – 16 Mar
6-8 wk
27 Apr
8 wk after
20 Apr
6 wk after
Annual phlox
Phlox drummondii
18 Feb – 4 Mar
6-8 wk
15 Apr
6 wk after
20 Apr
6 wk after
Hollyhock
Alcea rosea
29 Dec – 12 Jan
6-8 wk
23 Feb
3 wk before
23 Mar
2 wk after
Delphinium
Delphinium elatum
2 – 30 Jan
8-12 wk
27 Mar
3 wk after
4 Apr
4 wk after
African marigold
Tagetes erecta
2 – 16 Mar
6-8 wk
27 Apr
8 wk after
Black-eyed Susan
Rudbeckia hirta
12 – 26 Feb
6-8 wk
9 Apr
5 wk after
20 Apr
6 wk after
Woodland sage
Salvia nemorosa
5 – 19 Jan
8-10 wk
16 Mar
1 wk after
4 Apr
4 wk after
Black-eyed susan vine
Thunbergia alata
24 Feb – 24 Mar
6-10 wk
5 May
10 wk after
California goldenpoppy
Eschscholzia californica
6 Mar
1 wk before
Painted tongue
Salpiglossis sinuata
16 Feb – 2 Mar
8-10 wk
27 Apr
8 wk after
Water forget-me-not
Myosotis scorpioides
29 Dec – 12 Jan
6-8 wk
23 Feb
3 wk before
23 Mar
2 wk after
Current date Soon Date passed