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Rel. frost
Last spring frost (0°C) 9 Apr Frost 1 of 4 years · 20 years of data
Frost-free season 227 days 9 Apr – 22 Nov
Probability that frost is over

75% = 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)
23 Mar – 6 Apr
5-7 wk
11 May
5 wk after
3 Apr
1 wk before
Broccoli
Brassica oleracea (Italica-gruppen)
18 Mar – 1 Apr
4-6 wk
29 Apr
3 wk after
3 Apr
1 wk before
Chili pepper
Capsicum annuum
Fleece
12 Mar – 9 Apr
8-12 wk
4 Jun
8 wk after
Kale
Brassica oleracea (Curly Kale-gruppen)
20 Jan – 3 Feb
5-7 wk
10 Mar
4 wk before
27 Mar
2 wk before
Cucumber
Cucumis sativus
18 – 25 May
3-4 wk
15 Jun
10 wk after
Florence Fennel
Foeniculum vulgare
Fleece
30 Apr – 7 May
4-5 wk
4 Jun
8 wk after
5 May
4 wk after
Butter bean
Phaseolus lunatus
Greenhouse
22 – 29 Apr
3-4 wk
20 May
6 wk after
Onion
Allium cepa (Cepa-gruppen)
15 Jan – 12 Feb
8-12 wk
9 Apr
Vid frost
22 Apr
2 wk after
Onion (sets)
Allium cepa (Cepa-gruppen)
22 Apr
2 wk after
22 Apr
2 wk after
Sweetcorn
Zea mays
Fleece
27 Apr – 4 May
3-4 wk
25 May
7 wk after
Chard
Beta vulgaris (Flavescens-gruppen)
13 – 20 Apr
3-4 wk
11 May
5 wk after
22 Apr
2 wk after
Carrot
Daucus carota subsp. sativus var. sativus
27 Mar
2 wk before
Cavolo nero
Brassica oleracea (Palm Kale-gruppen)
20 Jan – 3 Feb
5-7 wk
10 Mar
4 wk before
27 Mar
2 wk before
Potato
Solanum tuberosum
3 – 17 Mar
4-6 wk
14 Apr
1 wk after
14 Apr
1 wk after
Ornamental Kale
Brassica oleracea (Ornamental-gruppen)
20 Jan – 3 Feb
5-7 wk
10 Mar
4 wk before
3 Apr
1 wk before
Pumpkin
Cucurbita pepo
18 – 25 May
3-4 wk
15 Jun
10 wk after
Beetroot
Beta vulgaris (Conditiva-gruppen)
13 – 20 Apr
3-4 wk
11 May
5 wk after
22 Apr
2 wk after
Red Cabbage
Brassica oleracea (Red Cabbage-gruppen)
18 Mar – 1 Apr
4-6 wk
29 Apr
3 wk after
Lettuce
Lactuca sativa
3 – 10 Mar
3-4 wk
31 Mar
1 wk before
3 Apr
1 wk before
Savoy Cabbage
Brassica oleracea (Savoy Cabbage-gruppen)
17 Feb – 3 Mar
4-6 wk
31 Mar
1 wk before
Shallot (bulbs)
Allium cepa (Aggregatum-gruppen)
27 Feb – 13 Mar
2-4 wk
27 Mar
2 wk before
27 Mar
2 wk before
Shallot (sets)
Allium cepa (Aggregatum-gruppen)
3 Apr
1 wk before
3 Apr
1 wk before
Spinach
Spinacia oleracea
20 – 27 Feb
3-4 wk
20 Mar
3 wk before
20 Mar
3 wk before
Sweet potato
Ipomoea batatas
11 – 25 May
4-6 wk
22 Jun
11 wk after
Tomato
Solanum lycopersicum
9 – 23 Apr
6-8 wk
4 Jun
8 wk after
Tomatillo
Physalis ixocarpa
French bean
Phaseolus vulgaris
7 – 21 May
2-4 wk
4 Jun
8 wk after
20 May
6 wk after
White Cabbage
Brassica oleracea (White Cabbage-gruppen)
18 Mar – 1 Apr
4-6 wk
29 Apr
3 wk after
Pea
Pisum sativum
20 – 27 Feb
3-4 wk
20 Mar
3 wk before
3 Apr
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
11 – 25 May
4-6 wk
22 Jun
11 wk after
Lemon balm
Melissa officinalis
29 Jan – 12 Feb
8-10 wk
9 Apr
Vid frost
5 May
4 wk after
Dill
Anethum graveolens
3 Apr
1 wk before
Chives
Allium schoenoprasum
13 – 27 Jan
6-8 wk
10 Mar
4 wk before
3 Apr
1 wk before
Spearmint
Mentha spicata
26 Dec – 23 Jan
8-12 wk
20 Mar
3 wk before
5 May
4 wk after
Coriander
Coriandrum sativum
22 Apr
2 wk after
Sage
Salvia officinalis
2 – 16 Mar
8-10 wk
11 May
5 wk after
Thyme
Thymus vulgaris
18 Feb – 4 Mar
8-10 wk
29 Apr
3 wk after
Oregano
Origanum vulgare
21 Feb – 7 Mar
6-8 wk
18 Apr
1 wk after
5 May
4 wk after
Parsley
Petroselinum crispum
23 Jan – 6 Feb
6-8 wk
20 Mar
3 wk before
3 Apr
1 wk before
Rosemary
Salvia rosmarinus
2 Feb – 2 Mar
10-14 wk
11 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
7 – 14 May
3-4 wk
4 Jun
8 wk after
Cornflower
Centaurea cyanus
20 Mar
3 wk before
3 Apr
1 wk before
Statice
Limonium sinuatum
26 Mar – 9 Apr
8-10 wk
4 Jun
8 wk after
Sweet William
Dianthus barbatus
23 Jan – 6 Feb
6-8 wk
20 Mar
3 wk before
14 Apr
1 wk after
Snow-on-the-mountain
Euphorbia marginata
9 – 23 Apr
6-8 wk
4 Jun
8 wk after
22 Jun
11 wk after
Dahlia
Dahlia × pinnata
2 – 16 Apr
6-8 wk
28 May
7 wk after
Dahlia (tubers)
Dahlia × pinnata
10 Mar – 7 Apr
4-8 wk
5 May
4 wk after
5 May
4 wk after
Foxglove
Digitalis purpurea
9 – 23 Jan
8-10 wk
20 Mar
3 wk before
22 Apr
2 wk after
Busy lizzie
Impatiens walleriana
23 Mar – 20 Apr
8-12 wk
15 Jun
10 wk after
Creeping zinnia
Sanvitalia procumbens
9 – 23 Apr
6-8 wk
4 Jun
8 wk after
Hyacinth bean
Dolichos lablab
Season too short
23 Apr – 7 May
4-6 wk
4 Jun
8 wk after
Chinese lantern
Physalis alkekengi
2 – 16 Mar
8-10 wk
11 May
5 wk after
Love in a mist
Nigella damascena
3 Apr
1 wk before
Strawflower
Xerochrysum bracteatum
9 – 23 Apr
6-8 wk
4 Jun
8 wk after
22 Jun
11 wk after
Tall verbena
Verbena bonariensis
16 Feb – 16 Mar
8-12 wk
11 May
5 wk after
Cardoon
Cynara cardunculus
Greenhouse
10 Feb – 10 Mar
8-12 wk
5 May
4 wk after
Regal-foxtail
Ptilotus nobilis
Fleece
12 Mar – 9 Apr
8-12 wk
4 Jun
8 wk after
Globe amaranth
Gomphrena globosa
Fleece
9 – 23 Apr
6-8 wk
4 Jun
8 wk after
Corn poppy
Papaver rhoeas
3 Apr
1 wk before
Snapdragon
Antirrhinum majus
6 Jan – 3 Feb
8-12 wk
31 Mar
1 wk before
14 Apr
1 wk after
Flossflower
Ageratum houstonianum
Fleece
26 Mar – 9 Apr
8-10 wk
4 Jun
8 wk after
Sweet pea
Lathyrus odoratus
23 Jan – 13 Feb
5-8 wk
20 Mar
3 wk before
Stock
Matthiola incana
3 – 17 Feb
6-8 wk
31 Mar
1 wk before
22 Apr
2 wk after
Wormwood
Artemisia absinthium
23 Jan – 6 Feb
6-8 wk
20 Mar
3 wk before
22 Apr
2 wk after
Mexican sunflower
Tithonia rotundifolia
Fleece
23 Apr – 7 May
4-6 wk
4 Jun
8 wk after
Pansy
Viola × wittrockiana
30 Dec – 13 Jan
8-10 wk
10 Mar
4 wk before
14 Apr
1 wk after
Petunia
Petunia
12 Mar – 9 Apr
8-12 wk
4 Jun
8 wk after
Scabious
Scabiosa atropurpurea
16 – 30 Mar
6-8 wk
11 May
5 wk after
20 May
6 wk after
Zinnia
Zinnia elegans
23 Apr – 7 May
4-6 wk
4 Jun
8 wk after
Common morning glory
Ipomoea purpurea
11 – 25 May
3-5 wk
15 Jun
10 wk after
Cosmos
Cosmos bipinnatus
23 Apr – 7 May
4-6 wk
4 Jun
8 wk after
20 May
6 wk after
Scarlet milkweed
Asclepias curassavica
Fleece
23 Mar – 20 Apr
8-12 wk
15 Jun
10 wk after
Bee balm
Monarda didyma
15 Jan – 12 Feb
8-12 wk
9 Apr
Vid frost
5 May
4 wk after
Yarrow
Achillea millefolium
23 Jan – 6 Feb
6-8 wk
20 Mar
3 wk before
22 Apr
2 wk after
Safflower
Carthamus tinctorius
20 Mar
3 wk before
3 Apr
1 wk before
Iceland poppy
Papaver nudicaule
13 – 27 Jan
6-8 wk
10 Mar
4 wk before
27 Mar
2 wk before
Bishop's flower
Ammi majus
13 – 27 Mar
4-6 wk
24 Apr
2 wk after
22 Apr
2 wk after
Drumsticks
Pycnosorus globosus
Fleece
12 – 26 Mar
10-12 wk
4 Jun
8 wk after
Sunflower
Helianthus annuus
7 – 14 May
3-4 wk
4 Jun
8 wk after
5 May
4 wk after
China aster
Callistephus chinensis
9 – 23 Apr
6-8 wk
4 Jun
8 wk after
20 May
6 wk after
Annual phlox
Phlox drummondii
25 Mar – 8 Apr
6-8 wk
20 May
6 wk after
20 May
6 wk after
Hollyhock
Alcea rosea
23 Jan – 6 Feb
6-8 wk
20 Mar
3 wk before
22 Apr
2 wk after
Delphinium
Delphinium elatum
4 Feb – 4 Mar
8-12 wk
29 Apr
3 wk after
5 May
4 wk after
African marigold
Tagetes erecta
9 – 23 Apr
6-8 wk
4 Jun
8 wk after
Black-eyed Susan
Rudbeckia hirta
16 – 30 Mar
6-8 wk
11 May
5 wk after
20 May
6 wk after
Woodland sage
Salvia nemorosa
7 – 21 Feb
8-10 wk
18 Apr
1 wk after
5 May
4 wk after
Black-eyed susan vine
Thunbergia alata
Fleece
26 Mar – 23 Apr
6-10 wk
4 Jun
8 wk after
California goldenpoppy
Eschscholzia californica
3 Apr
1 wk before
Painted tongue
Salpiglossis sinuata
26 Mar – 9 Apr
8-10 wk
4 Jun
8 wk after
Water forget-me-not
Myosotis scorpioides
23 Jan – 6 Feb
6-8 wk
20 Mar
3 wk before
22 Apr
2 wk after
Current date Soon Date passed