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Rel. frost
Last spring frost (0°C) 5 Apr Frost 9 of 10 years · 20 years of data
Frost-free season 192 days 5 Apr – 14 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)
Fleece
7 – 21 Mar
5-7 wk
25 Apr
3 wk after
16 Mar
3 wk before
Broccoli
Brassica oleracea (Italica-gruppen)
14 – 28 Mar
4-6 wk
25 Apr
3 wk after
30 Mar
1 wk before
Chili pepper
Capsicum annuum
Greenhouse
21 Feb – 21 Mar
8-12 wk
16 May
6 wk after
Kale
Brassica oleracea (Curly Kale-gruppen)
16 – 30 Jan
5-7 wk
6 Mar
4 wk before
23 Mar
2 wk before
Cucumber
Cucumis sativus
Greenhouse
18 – 25 Apr
3-4 wk
16 May
6 wk after
Florence Fennel
Foeniculum vulgare
Greenhouse
11 – 18 Apr
4-5 wk
16 May
6 wk after
18 Apr
2 wk after
Butter bean
Phaseolus lunatus
Greenhouse
18 – 25 Apr
3-4 wk
16 May
6 wk after
Onion
Allium cepa (Cepa-gruppen)
11 Jan – 8 Feb
8-12 wk
5 Apr
Vid frost
18 Apr
2 wk after
Onion (sets)
Allium cepa (Cepa-gruppen)
18 Apr
2 wk after
18 Apr
2 wk after
Sweetcorn
Zea mays
Fleece
23 – 30 Apr
3-4 wk
21 May
7 wk after
Chard
Beta vulgaris (Flavescens-gruppen)
9 – 16 Apr
3-4 wk
7 May
5 wk after
18 Apr
2 wk after
Carrot
Daucus carota subsp. sativus var. sativus
23 Mar
2 wk before
Cavolo nero
Brassica oleracea (Palm Kale-gruppen)
16 – 30 Jan
5-7 wk
6 Mar
4 wk before
23 Mar
2 wk before
Potato
Solanum tuberosum
27 Feb – 13 Mar
4-6 wk
10 Apr
1 wk after
10 Apr
1 wk after
Ornamental Kale
Brassica oleracea (Ornamental-gruppen)
16 – 30 Jan
5-7 wk
6 Mar
4 wk before
30 Mar
1 wk before
Pumpkin
Cucurbita pepo
Greenhouse
18 – 25 Apr
3-4 wk
16 May
6 wk after
Beetroot
Beta vulgaris (Conditiva-gruppen)
9 – 16 Apr
3-4 wk
7 May
5 wk after
18 Apr
2 wk after
Red Cabbage
Brassica oleracea (Red Cabbage-gruppen)
14 – 28 Mar
4-6 wk
25 Apr
3 wk after
Lettuce
Lactuca sativa
27 Feb – 6 Mar
3-4 wk
27 Mar
1 wk before
30 Mar
1 wk before
Savoy Cabbage
Brassica oleracea (Savoy Cabbage-gruppen)
13 – 27 Feb
4-6 wk
27 Mar
1 wk before
Shallot (bulbs)
Allium cepa (Aggregatum-gruppen)
23 Feb – 9 Mar
2-4 wk
23 Mar
2 wk before
23 Mar
2 wk before
Shallot (sets)
Allium cepa (Aggregatum-gruppen)
30 Mar
1 wk before
30 Mar
1 wk before
Spinach
Spinacia oleracea
16 – 23 Feb
3-4 wk
16 Mar
3 wk before
16 Mar
3 wk before
Sweet potato
Ipomoea batatas
7 – 21 May
4-6 wk
18 Jun
11 wk after
Tomato
Solanum lycopersicum
Fleece
21 Mar – 4 Apr
6-8 wk
16 May
6 wk after
Tomatillo
Physalis ixocarpa
French bean
Phaseolus vulgaris
Fleece
18 Apr – 2 May
2-4 wk
16 May
6 wk after
1 May
4 wk after
White Cabbage
Brassica oleracea (White Cabbage-gruppen)
14 – 28 Mar
4-6 wk
25 Apr
3 wk after
Pea
Pisum sativum
16 – 23 Feb
3-4 wk
16 Mar
3 wk before
30 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
9 – 23 Apr
4-6 wk
21 May
7 wk after
Lemon balm
Melissa officinalis
25 Jan – 8 Feb
8-10 wk
5 Apr
Vid frost
1 May
4 wk after
Dill
Anethum graveolens
30 Mar
1 wk before
Chives
Allium schoenoprasum
9 – 23 Jan
6-8 wk
6 Mar
4 wk before
30 Mar
1 wk before
Spearmint
Mentha spicata
22 Dec – 19 Jan
8-12 wk
16 Mar
3 wk before
1 May
4 wk after
Coriander
Coriandrum sativum
18 Apr
2 wk after
Sage
Salvia officinalis
26 Feb – 12 Mar
8-10 wk
7 May
5 wk after
Thyme
Thymus vulgaris
14 – 28 Feb
8-10 wk
25 Apr
3 wk after
Oregano
Origanum vulgare
17 Feb – 3 Mar
6-8 wk
14 Apr
1 wk after
1 May
4 wk after
Parsley
Petroselinum crispum
19 Jan – 2 Feb
6-8 wk
16 Mar
3 wk before
30 Mar
1 wk before
Rosemary
Salvia rosmarinus
29 Jan – 26 Feb
10-14 wk
7 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
Season too short
3 – 10 May
3-4 wk
31 May
8 wk after
Cornflower
Centaurea cyanus
16 Mar
3 wk before
30 Mar
1 wk before
Statice
Limonium sinuatum
Fleece
7 – 21 Mar
8-10 wk
16 May
6 wk after
Sweet William
Dianthus barbatus
19 Jan – 2 Feb
6-8 wk
16 Mar
3 wk before
10 Apr
1 wk after
Snow-on-the-mountain
Euphorbia marginata
Fleece
21 Mar – 4 Apr
6-8 wk
16 May
6 wk after
21 May
7 wk after
Dahlia
Dahlia × pinnata
Fleece
12 – 26 Mar
6-8 wk
7 May
5 wk after
Dahlia (tubers)
Dahlia × pinnata
6 Mar – 3 Apr
4-8 wk
1 May
4 wk after
1 May
4 wk after
Foxglove
Digitalis purpurea
5 – 19 Jan
8-10 wk
16 Mar
3 wk before
18 Apr
2 wk after
Busy lizzie
Impatiens walleriana
Greenhouse
21 Feb – 21 Mar
8-12 wk
16 May
6 wk after
Creeping zinnia
Sanvitalia procumbens
Fleece
21 Mar – 4 Apr
6-8 wk
16 May
6 wk after
Hyacinth bean
Dolichos lablab
Season too short
19 Apr – 3 May
4-6 wk
31 May
8 wk after
Chinese lantern
Physalis alkekengi
26 Feb – 12 Mar
8-10 wk
7 May
5 wk after
Love in a mist
Nigella damascena
30 Mar
1 wk before
Strawflower
Xerochrysum bracteatum
Greenhouse
6 – 20 Mar
6-8 wk
1 May
4 wk after
8 May
5 wk after
Tall verbena
Verbena bonariensis
12 Feb – 12 Mar
8-12 wk
7 May
5 wk after
Cardoon
Cynara cardunculus
Season too short
6 Feb – 6 Mar
8-12 wk
1 May
4 wk after
Regal-foxtail
Ptilotus nobilis
Season too short
21 Feb – 21 Mar
8-12 wk
16 May
6 wk after
Globe amaranth
Gomphrena globosa
Greenhouse
21 Mar – 4 Apr
6-8 wk
16 May
6 wk after
Corn poppy
Papaver rhoeas
30 Mar
1 wk before
Snapdragon
Antirrhinum majus
2 – 30 Jan
8-12 wk
27 Mar
1 wk before
10 Apr
1 wk after
Flossflower
Ageratum houstonianum
Greenhouse
7 – 21 Mar
8-10 wk
16 May
6 wk after
Sweet pea
Lathyrus odoratus
19 Jan – 9 Feb
5-8 wk
16 Mar
3 wk before
Stock
Matthiola incana
30 Jan – 13 Feb
6-8 wk
27 Mar
1 wk before
18 Apr
2 wk after
Wormwood
Artemisia absinthium
19 Jan – 2 Feb
6-8 wk
16 Mar
3 wk before
18 Apr
2 wk after
Mexican sunflower
Tithonia rotundifolia
Greenhouse
4 – 18 Apr
4-6 wk
16 May
6 wk after
Pansy
Viola × wittrockiana
26 Dec – 9 Jan
8-10 wk
6 Mar
4 wk before
10 Apr
1 wk after
Petunia
Petunia
Greenhouse
6 Feb – 6 Mar
8-12 wk
1 May
4 wk after
Scabious
Scabiosa atropurpurea
12 – 26 Mar
6-8 wk
7 May
5 wk after
16 May
6 wk after
Zinnia
Zinnia elegans
Fleece
4 – 18 Apr
4-6 wk
16 May
6 wk after
Common morning glory
Ipomoea purpurea
Greenhouse
11 – 25 Apr
3-5 wk
16 May
6 wk after
Cosmos
Cosmos bipinnatus
Fleece
4 – 18 Apr
4-6 wk
16 May
6 wk after
1 May
4 wk after
Scarlet milkweed
Asclepias curassavica
Season too short
8 Mar – 5 Apr
8-12 wk
31 May
8 wk after
Bee balm
Monarda didyma
11 Jan – 8 Feb
8-12 wk
5 Apr
Vid frost
1 May
4 wk after
Yarrow
Achillea millefolium
19 Jan – 2 Feb
6-8 wk
16 Mar
3 wk before
18 Apr
2 wk after
Safflower
Carthamus tinctorius
16 Mar
3 wk before
30 Mar
1 wk before
Iceland poppy
Papaver nudicaule
9 – 23 Jan
6-8 wk
6 Mar
4 wk before
23 Mar
2 wk before
Bishop's flower
Ammi majus
9 – 23 Mar
4-6 wk
20 Apr
2 wk after
18 Apr
2 wk after
Drumsticks
Pycnosorus globosus
Season too short
21 Feb – 7 Mar
10-12 wk
16 May
6 wk after
Sunflower
Helianthus annuus
Greenhouse
3 – 10 Apr
3-4 wk
1 May
4 wk after
4 Apr
China aster
Callistephus chinensis
Greenhouse
6 – 20 Mar
6-8 wk
1 May
4 wk after
18 Apr
2 wk after
Annual phlox
Phlox drummondii
21 Mar – 4 Apr
6-8 wk
16 May
6 wk after
16 May
6 wk after
Hollyhock
Alcea rosea
19 Jan – 2 Feb
6-8 wk
16 Mar
3 wk before
18 Apr
2 wk after
Delphinium
Delphinium elatum
31 Jan – 28 Feb
8-12 wk
25 Apr
3 wk after
1 May
4 wk after
African marigold
Tagetes erecta
Fleece
21 Mar – 4 Apr
6-8 wk
16 May
6 wk after
Black-eyed Susan
Rudbeckia hirta
12 – 26 Mar
6-8 wk
7 May
5 wk after
16 May
6 wk after
Woodland sage
Salvia nemorosa
3 – 17 Feb
8-10 wk
14 Apr
1 wk after
1 May
4 wk after
Black-eyed susan vine
Thunbergia alata
Greenhouse
7 Mar – 4 Apr
6-10 wk
16 May
6 wk after
California goldenpoppy
Eschscholzia californica
30 Mar
1 wk before
Painted tongue
Salpiglossis sinuata
Fleece
7 – 21 Mar
8-10 wk
16 May
6 wk after
Water forget-me-not
Myosotis scorpioides
19 Jan – 2 Feb
6-8 wk
16 Mar
3 wk before
18 Apr
2 wk after
Current date Soon Date passed