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Rel. frost
Last spring frost (0°C) 21 May Frost 1 of 4 years · 20 years of data
Frost-free season 145 days 21 May – 13 Oct
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)
Season too short
7 – 21 Apr
5-7 wk
26 May
1 wk after
9 May
2 wk before
Broccoli
Brassica oleracea (Italica-gruppen)
28 Apr – 12 May
4-6 wk
9 Jun
3 wk after
25 May
1 wk after
Chili pepper
Capsicum annuum
Season too short
4 Apr – 2 May
8-12 wk
27 Jun
5 wk after
Kale
Brassica oleracea (Curly Kale-gruppen)
14 – 28 Mar
5-7 wk
2 May
3 wk before
21 May
Vid frost
Cucumber
Cucumis sativus
Season too short
30 May – 6 Jun
3-4 wk
27 Jun
5 wk after
Florence Fennel
Foeniculum vulgare
Season too short
23 – 30 May
4-5 wk
27 Jun
5 wk after
11 Jun
3 wk after
Butter bean
Phaseolus lunatus
Season too short
11 – 18 Jun
3-4 wk
9 Jul
7 wk after
Onion
Allium cepa (Cepa-gruppen)
26 Feb – 26 Mar
8-12 wk
21 May
Vid frost
11 Jun
3 wk after
Onion (sets)
Allium cepa (Cepa-gruppen)
11 Jun
3 wk after
11 Jun
3 wk after
Sweetcorn
Zea mays
Greenhouse
3 – 10 Jun
3-4 wk
1 Jul
6 wk after
Chard
Beta vulgaris (Flavescens-gruppen)
25 May – 1 Jun
3-4 wk
22 Jun
5 wk after
11 Jun
3 wk after
Carrot
Daucus carota subsp. sativus var. sativus
21 May
Vid frost
Cavolo nero
Brassica oleracea (Palm Kale-gruppen)
14 – 28 Mar
5-7 wk
2 May
3 wk before
21 May
Vid frost
Potato
Solanum tuberosum
25 Apr – 9 May
4-6 wk
6 Jun
2 wk after
6 Jun
2 wk after
Ornamental Kale
Brassica oleracea (Ornamental-gruppen)
14 – 28 Mar
5-7 wk
2 May
3 wk before
25 May
1 wk after
Pumpkin
Cucurbita pepo
Season too short
30 May – 6 Jun
3-4 wk
27 Jun
5 wk after
Beetroot
Beta vulgaris (Conditiva-gruppen)
25 May – 1 Jun
3-4 wk
22 Jun
5 wk after
11 Jun
3 wk after
Red Cabbage
Brassica oleracea (Red Cabbage-gruppen)
28 Apr – 12 May
4-6 wk
9 Jun
3 wk after
Lettuce
Lactuca sativa
17 – 24 Apr
3-4 wk
15 May
1 wk before
25 May
1 wk after
Savoy Cabbage
Brassica oleracea (Savoy Cabbage-gruppen)
3 – 17 Apr
4-6 wk
15 May
1 wk before
Shallot (bulbs)
Allium cepa (Aggregatum-gruppen)
23 Apr – 7 May
2-4 wk
21 May
Vid frost
21 May
Vid frost
Shallot (sets)
Allium cepa (Aggregatum-gruppen)
25 May
1 wk after
25 May
1 wk after
Spinach
Spinacia oleracea
10 – 17 Apr
3-4 wk
8 May
2 wk before
17 May
1 wk before
Sweet potato
Ipomoea batatas
22 Jun – 6 Jul
4-6 wk
3 Aug
11 wk after
Tomato
Solanum lycopersicum
Greenhouse
20 Apr – 4 May
6-8 wk
15 Jun
4 wk after
Tomatillo
Physalis ixocarpa
French bean
Phaseolus vulgaris
Greenhouse
18 May – 1 Jun
2-4 wk
15 Jun
4 wk after
11 Jun
3 wk after
White Cabbage
Brassica oleracea (White Cabbage-gruppen)
28 Apr – 12 May
4-6 wk
9 Jun
3 wk after
Pea
Pisum sativum
10 – 17 Apr
3-4 wk
8 May
2 wk before
25 May
1 wk after
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
Greenhouse
20 May – 3 Jun
4-6 wk
1 Jul
6 wk after
Lemon balm
Melissa officinalis
12 – 26 Mar
8-10 wk
21 May
Vid frost
25 Jun
5 wk after
Dill
Anethum graveolens
25 May
1 wk after
Chives
Allium schoenoprasum
7 – 21 Mar
6-8 wk
2 May
3 wk before
25 May
1 wk after
Spearmint
Mentha spicata
13 Feb – 13 Mar
8-12 wk
8 May
2 wk before
25 Jun
5 wk after
Coriander
Coriandrum sativum
11 Jun
3 wk after
Sage
Salvia officinalis
Fleece
31 Mar – 14 Apr
8-10 wk
9 Jun
3 wk after
Thyme
Thymus vulgaris
31 Mar – 14 Apr
8-10 wk
9 Jun
3 wk after
Oregano
Origanum vulgare
31 Mar – 14 Apr
6-8 wk
26 May
1 wk after
25 Jun
5 wk after
Parsley
Petroselinum crispum
13 – 27 Mar
6-8 wk
8 May
2 wk before
25 May
1 wk after
Rosemary
Salvia rosmarinus
Greenhouse
17 Feb – 17 Mar
10-14 wk
26 May
1 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
8 – 15 Jun
3-4 wk
6 Jul
7 wk after
Cornflower
Centaurea cyanus
8 May
2 wk before
25 May
1 wk after
Statice
Limonium sinuatum
Season too short
6 – 20 Apr
8-10 wk
15 Jun
4 wk after
Sweet William
Dianthus barbatus
13 – 27 Mar
6-8 wk
8 May
2 wk before
6 Jun
2 wk after
Snow-on-the-mountain
Euphorbia marginata
Season too short
20 Apr – 4 May
6-8 wk
15 Jun
4 wk after
1 Jul
6 wk after
Dahlia
Dahlia × pinnata
Greenhouse
14 – 28 Apr
6-8 wk
9 Jun
3 wk after
Dahlia (tubers)
Dahlia × pinnata
30 Apr – 28 May
4-8 wk
25 Jun
5 wk after
25 Jun
5 wk after
Foxglove
Digitalis purpurea
27 Feb – 13 Mar
8-10 wk
8 May
2 wk before
11 Jun
3 wk after
Busy lizzie
Impatiens walleriana
Greenhouse
4 Apr – 2 May
8-12 wk
27 Jun
5 wk after
Creeping zinnia
Sanvitalia procumbens
Greenhouse
20 Apr – 4 May
6-8 wk
15 Jun
4 wk after
Hyacinth bean
Dolichos lablab
Season too short
25 May – 8 Jun
4-6 wk
6 Jul
7 wk after
Chinese lantern
Physalis alkekengi
Greenhouse
17 – 31 Mar
8-10 wk
26 May
1 wk after
Love in a mist
Nigella damascena
25 May
1 wk after
Strawflower
Xerochrysum bracteatum
Season too short
20 Apr – 4 May
6-8 wk
15 Jun
4 wk after
1 Jul
6 wk after
Tall verbena
Verbena bonariensis
Greenhouse
3 – 31 Mar
8-12 wk
26 May
1 wk after
Cardoon
Cynara cardunculus
Season too short
23 Mar – 20 Apr
8-12 wk
15 Jun
4 wk after
Regal-foxtail
Ptilotus nobilis
Season too short
4 Apr – 2 May
8-12 wk
27 Jun
5 wk after
Globe amaranth
Gomphrena globosa
Season too short
2 – 16 May
6-8 wk
27 Jun
5 wk after
Corn poppy
Papaver rhoeas
25 May
1 wk after
Snapdragon
Antirrhinum majus
20 Feb – 20 Mar
8-12 wk
15 May
1 wk before
6 Jun
2 wk after
Flossflower
Ageratum houstonianum
Season too short
18 Apr – 2 May
8-10 wk
27 Jun
5 wk after
Sweet pea
Lathyrus odoratus
13 Mar – 3 Apr
5-8 wk
8 May
2 wk before
Stock
Matthiola incana
20 Mar – 3 Apr
6-8 wk
15 May
1 wk before
11 Jun
3 wk after
Wormwood
Artemisia absinthium
13 – 27 Mar
6-8 wk
8 May
2 wk before
11 Jun
3 wk after
Mexican sunflower
Tithonia rotundifolia
Season too short
16 – 30 May
4-6 wk
27 Jun
5 wk after
Pansy
Viola × wittrockiana
21 Feb – 7 Mar
8-10 wk
2 May
3 wk before
6 Jun
2 wk after
Petunia
Petunia
Season too short
23 Mar – 20 Apr
8-12 wk
15 Jun
4 wk after
Scabious
Scabiosa atropurpurea
Greenhouse
31 Mar – 14 Apr
6-8 wk
26 May
1 wk after
11 Jun
3 wk after
Zinnia
Zinnia elegans
Greenhouse
4 – 18 May
4-6 wk
15 Jun
4 wk after
Common morning glory
Ipomoea purpurea
Season too short
23 May – 6 Jun
3-5 wk
27 Jun
5 wk after
Cosmos
Cosmos bipinnatus
Season too short
4 – 18 May
4-6 wk
15 Jun
4 wk after
11 Jun
3 wk after
Scarlet milkweed
Asclepias curassavica
Season too short
13 Apr – 11 May
8-12 wk
6 Jul
7 wk after
Bee balm
Monarda didyma
26 Feb – 26 Mar
8-12 wk
21 May
Vid frost
25 Jun
5 wk after
Yarrow
Achillea millefolium
13 – 27 Mar
6-8 wk
8 May
2 wk before
11 Jun
3 wk after
Safflower
Carthamus tinctorius
8 May
2 wk before
25 May
1 wk after
Iceland poppy
Papaver nudicaule
7 – 21 Mar
6-8 wk
2 May
3 wk before
21 May
Vid frost
Bishop's flower
Ammi majus
19 Apr – 3 May
4-6 wk
31 May
1 wk after
11 Jun
3 wk after
Drumsticks
Pycnosorus globosus
Season too short
4 – 18 Apr
10-12 wk
27 Jun
5 wk after
Sunflower
Helianthus annuus
Season too short
18 – 25 May
3-4 wk
15 Jun
4 wk after
31 May
1 wk after
China aster
Callistephus chinensis
Season too short
20 Apr – 4 May
6-8 wk
15 Jun
4 wk after
11 Jun
3 wk after
Annual phlox
Phlox drummondii
Fleece
20 Apr – 4 May
6-8 wk
15 Jun
4 wk after
25 Jun
5 wk after
Hollyhock
Alcea rosea
13 – 27 Mar
6-8 wk
8 May
2 wk before
11 Jun
3 wk after
Delphinium
Delphinium elatum
17 Mar – 14 Apr
8-12 wk
9 Jun
3 wk after
25 Jun
5 wk after
African marigold
Tagetes erecta
Greenhouse
20 Apr – 4 May
6-8 wk
15 Jun
4 wk after
Black-eyed Susan
Rudbeckia hirta
Fleece
14 – 28 Apr
6-8 wk
9 Jun
3 wk after
25 Jun
5 wk after
Woodland sage
Salvia nemorosa
17 – 31 Mar
8-10 wk
26 May
1 wk after
25 Jun
5 wk after
Black-eyed susan vine
Thunbergia alata
Season too short
18 Apr – 16 May
6-10 wk
27 Jun
5 wk after
California goldenpoppy
Eschscholzia californica
25 May
1 wk after
Painted tongue
Salpiglossis sinuata
Season too short
6 – 20 Apr
8-10 wk
15 Jun
4 wk after
Water forget-me-not
Myosotis scorpioides
13 – 27 Mar
6-8 wk
8 May
2 wk before
11 Jun
3 wk after
Current date Soon Date passed