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Rel. frost
Last spring frost (0°C) 6 May Frost 1 of 4 years · 20 years of data
Frost-free season 181 days 6 May – 3 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)
Fleece
7 – 21 Apr
5-7 wk
26 May
3 wk after
16 Apr
3 wk before
Broccoli
Brassica oleracea (Italica-gruppen)
14 – 28 Apr
4-6 wk
26 May
3 wk after
30 Apr
1 wk before
Chili pepper
Capsicum annuum
Greenhouse
24 Mar – 21 Apr
8-12 wk
16 Jun
6 wk after
Kale
Brassica oleracea (Curly Kale-gruppen)
16 Feb – 2 Mar
5-7 wk
6 Apr
4 wk before
23 Apr
2 wk before
Cucumber
Cucumis sativus
Greenhouse
19 – 26 May
3-4 wk
16 Jun
6 wk after
Florence Fennel
Foeniculum vulgare
Greenhouse
12 – 19 May
4-5 wk
16 Jun
6 wk after
19 May
2 wk after
Butter bean
Phaseolus lunatus
Greenhouse
19 – 26 May
3-4 wk
16 Jun
6 wk after
Onion
Allium cepa (Cepa-gruppen)
11 Feb – 11 Mar
8-12 wk
6 May
Vid frost
19 May
2 wk after
Onion (sets)
Allium cepa (Cepa-gruppen)
19 May
2 wk after
19 May
2 wk after
Sweetcorn
Zea mays
Fleece
24 – 31 May
3-4 wk
21 Jun
7 wk after
Chard
Beta vulgaris (Flavescens-gruppen)
10 – 17 May
3-4 wk
7 Jun
5 wk after
19 May
2 wk after
Carrot
Daucus carota subsp. sativus var. sativus
23 Apr
2 wk before
Cavolo nero
Brassica oleracea (Palm Kale-gruppen)
16 Feb – 2 Mar
5-7 wk
6 Apr
4 wk before
23 Apr
2 wk before
Potato
Solanum tuberosum
30 Mar – 13 Apr
4-6 wk
11 May
1 wk after
11 May
1 wk after
Ornamental Kale
Brassica oleracea (Ornamental-gruppen)
16 Feb – 2 Mar
5-7 wk
6 Apr
4 wk before
30 Apr
1 wk before
Pumpkin
Cucurbita pepo
Greenhouse
19 – 26 May
3-4 wk
16 Jun
6 wk after
Beetroot
Beta vulgaris (Conditiva-gruppen)
10 – 17 May
3-4 wk
7 Jun
5 wk after
19 May
2 wk after
Red Cabbage
Brassica oleracea (Red Cabbage-gruppen)
14 – 28 Apr
4-6 wk
26 May
3 wk after
Lettuce
Lactuca sativa
30 Mar – 6 Apr
3-4 wk
27 Apr
1 wk before
30 Apr
1 wk before
Savoy Cabbage
Brassica oleracea (Savoy Cabbage-gruppen)
16 – 30 Mar
4-6 wk
27 Apr
1 wk before
Shallot (bulbs)
Allium cepa (Aggregatum-gruppen)
26 Mar – 9 Apr
2-4 wk
23 Apr
2 wk before
23 Apr
2 wk before
Shallot (sets)
Allium cepa (Aggregatum-gruppen)
30 Apr
1 wk before
30 Apr
1 wk before
Spinach
Spinacia oleracea
19 – 26 Mar
3-4 wk
16 Apr
3 wk before
16 Apr
3 wk before
Sweet potato
Ipomoea batatas
7 – 21 Jun
4-6 wk
19 Jul
11 wk after
Tomato
Solanum lycopersicum
Fleece
21 Apr – 5 May
6-8 wk
16 Jun
6 wk after
Tomatillo
Physalis ixocarpa
French bean
Phaseolus vulgaris
Fleece
19 May – 2 Jun
2-4 wk
16 Jun
6 wk after
1 Jun
4 wk after
White Cabbage
Brassica oleracea (White Cabbage-gruppen)
14 – 28 Apr
4-6 wk
26 May
3 wk after
Pea
Pisum sativum
19 – 26 Mar
3-4 wk
16 Apr
3 wk before
30 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
Fleece
10 – 24 May
4-6 wk
21 Jun
7 wk after
Lemon balm
Melissa officinalis
25 Feb – 11 Mar
8-10 wk
6 May
Vid frost
1 Jun
4 wk after
Dill
Anethum graveolens
30 Apr
1 wk before
Chives
Allium schoenoprasum
9 – 23 Feb
6-8 wk
6 Apr
4 wk before
30 Apr
1 wk before
Spearmint
Mentha spicata
22 Jan – 19 Feb
8-12 wk
16 Apr
3 wk before
1 Jun
4 wk after
Coriander
Coriandrum sativum
19 May
2 wk after
Sage
Salvia officinalis
29 Mar – 12 Apr
8-10 wk
7 Jun
5 wk after
Thyme
Thymus vulgaris
17 – 31 Mar
8-10 wk
26 May
3 wk after
Oregano
Origanum vulgare
20 Mar – 3 Apr
6-8 wk
15 May
1 wk after
1 Jun
4 wk after
Parsley
Petroselinum crispum
19 Feb – 5 Mar
6-8 wk
16 Apr
3 wk before
30 Apr
1 wk before
Rosemary
Salvia rosmarinus
Fleece
17 Feb – 17 Mar
10-14 wk
26 May
3 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 Jun
3-4 wk
1 Jul
8 wk after
Cornflower
Centaurea cyanus
16 Apr
3 wk before
30 Apr
1 wk before
Statice
Limonium sinuatum
Fleece
7 – 21 Apr
8-10 wk
16 Jun
6 wk after
Sweet William
Dianthus barbatus
19 Feb – 5 Mar
6-8 wk
16 Apr
3 wk before
11 May
1 wk after
Snow-on-the-mountain
Euphorbia marginata
Fleece
21 Apr – 5 May
6-8 wk
16 Jun
6 wk after
21 Jun
7 wk after
Dahlia
Dahlia × pinnata
Fleece
12 – 26 Apr
6-8 wk
7 Jun
5 wk after
Dahlia (tubers)
Dahlia × pinnata
6 Apr – 4 May
4-8 wk
1 Jun
4 wk after
1 Jun
4 wk after
Foxglove
Digitalis purpurea
5 – 19 Feb
8-10 wk
16 Apr
3 wk before
19 May
2 wk after
Busy lizzie
Impatiens walleriana
Fleece
8 Apr – 6 May
8-12 wk
1 Jul
8 wk after
Creeping zinnia
Sanvitalia procumbens
Fleece
21 Apr – 5 May
6-8 wk
16 Jun
6 wk after
Hyacinth bean
Dolichos lablab
Season too short
20 May – 3 Jun
4-6 wk
1 Jul
8 wk after
Chinese lantern
Physalis alkekengi
Fleece
17 – 31 Mar
8-10 wk
26 May
3 wk after
Love in a mist
Nigella damascena
30 Apr
1 wk before
Strawflower
Xerochrysum bracteatum
Greenhouse
6 – 20 Apr
6-8 wk
1 Jun
4 wk after
8 Jun
5 wk after
Tall verbena
Verbena bonariensis
Fleece
3 – 31 Mar
8-12 wk
26 May
3 wk after
Cardoon
Cynara cardunculus
Season too short
9 Mar – 6 Apr
8-12 wk
1 Jun
4 wk after
Regal-foxtail
Ptilotus nobilis
Season too short
24 Mar – 21 Apr
8-12 wk
16 Jun
6 wk after
Globe amaranth
Gomphrena globosa
Greenhouse
21 Apr – 5 May
6-8 wk
16 Jun
6 wk after
Corn poppy
Papaver rhoeas
30 Apr
1 wk before
Snapdragon
Antirrhinum majus
2 Feb – 2 Mar
8-12 wk
27 Apr
1 wk before
11 May
1 wk after
Flossflower
Ageratum houstonianum
Greenhouse
7 – 21 Apr
8-10 wk
16 Jun
6 wk after
Sweet pea
Lathyrus odoratus
19 Feb – 12 Mar
5-8 wk
16 Apr
3 wk before
Stock
Matthiola incana
2 – 16 Mar
6-8 wk
27 Apr
1 wk before
19 May
2 wk after
Wormwood
Artemisia absinthium
19 Feb – 5 Mar
6-8 wk
16 Apr
3 wk before
19 May
2 wk after
Mexican sunflower
Tithonia rotundifolia
Greenhouse
5 – 19 May
4-6 wk
16 Jun
6 wk after
Pansy
Viola × wittrockiana
26 Jan – 9 Feb
8-10 wk
6 Apr
4 wk before
11 May
1 wk after
Petunia
Petunia
Greenhouse
9 Mar – 6 Apr
8-12 wk
1 Jun
4 wk after
Scabious
Scabiosa atropurpurea
Fleece
31 Mar – 14 Apr
6-8 wk
26 May
3 wk after
1 Jun
4 wk after
Zinnia
Zinnia elegans
Fleece
5 – 19 May
4-6 wk
16 Jun
6 wk after
Common morning glory
Ipomoea purpurea
Greenhouse
12 – 26 May
3-5 wk
16 Jun
6 wk after
Cosmos
Cosmos bipinnatus
Fleece
5 – 19 May
4-6 wk
16 Jun
6 wk after
1 Jun
4 wk after
Scarlet milkweed
Asclepias curassavica
Season too short
8 Apr – 6 May
8-12 wk
1 Jul
8 wk after
Bee balm
Monarda didyma
11 Feb – 11 Mar
8-12 wk
6 May
Vid frost
1 Jun
4 wk after
Yarrow
Achillea millefolium
19 Feb – 5 Mar
6-8 wk
16 Apr
3 wk before
19 May
2 wk after
Safflower
Carthamus tinctorius
16 Apr
3 wk before
30 Apr
1 wk before
Iceland poppy
Papaver nudicaule
9 – 23 Feb
6-8 wk
6 Apr
4 wk before
23 Apr
2 wk before
Bishop's flower
Ammi majus
9 – 23 Apr
4-6 wk
21 May
2 wk after
19 May
2 wk after
Drumsticks
Pycnosorus globosus
Season too short
24 Mar – 7 Apr
10-12 wk
16 Jun
6 wk after
Sunflower
Helianthus annuus
Greenhouse
4 – 11 May
3-4 wk
1 Jun
4 wk after
5 May
China aster
Callistephus chinensis
Greenhouse
6 – 20 Apr
6-8 wk
1 Jun
4 wk after
19 May
2 wk after
Annual phlox
Phlox drummondii
21 Apr – 5 May
6-8 wk
16 Jun
6 wk after
16 Jun
6 wk after
Hollyhock
Alcea rosea
19 Feb – 5 Mar
6-8 wk
16 Apr
3 wk before
19 May
2 wk after
Delphinium
Delphinium elatum
3 – 31 Mar
8-12 wk
26 May
3 wk after
1 Jun
4 wk after
African marigold
Tagetes erecta
Fleece
21 Apr – 5 May
6-8 wk
16 Jun
6 wk after
Black-eyed Susan
Rudbeckia hirta
12 – 26 Apr
6-8 wk
7 Jun
5 wk after
16 Jun
6 wk after
Woodland sage
Salvia nemorosa
6 – 20 Mar
8-10 wk
15 May
1 wk after
1 Jun
4 wk after
Black-eyed susan vine
Thunbergia alata
Greenhouse
7 Apr – 5 May
6-10 wk
16 Jun
6 wk after
California goldenpoppy
Eschscholzia californica
30 Apr
1 wk before
Painted tongue
Salpiglossis sinuata
Fleece
7 – 21 Apr
8-10 wk
16 Jun
6 wk after
Water forget-me-not
Myosotis scorpioides
19 Feb – 5 Mar
6-8 wk
16 Apr
3 wk before
19 May
2 wk after
Current date Soon Date passed