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Rel. frost
Last spring frost (0°C) 19 Apr Frost 9 of 10 years · 20 years of data
Frost-free season 167 days 19 Apr – 3 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
Earliest Latest Growing time Earliest Latest Rel. frost Earliest Latest Rel. frost
Cauliflower
Brassica oleracea (Botrytis-gruppen)
1 – 15 Mar
19 Jun
5-7 wk
19 Apr
24 Jul
0 wk
13 Apr
14 Jul
1 wk before
Broccoli
Brassica oleracea (Italica-gruppen)
8 – 22 Mar
1 Jul
4-6 wk
19 Apr
29 Jul
0 wk
13 Apr
19 Jul
1 wk before
Chili pepper
Capsicum annuum
Season too short
12 Feb – 12 Mar
8-12 wk
7 May
3 wk after
Curly Kale
Brassica oleracea (Curly Kale-gruppen)
1 – 15 Mar
14 Jun
5-7 wk
19 Apr
19 Jul
0 wk
6 Apr
9 Jul
2 wk before
Garden cucumber
Cucumis sativus
Greenhouse
9 – 16 Apr
15 May
3-4 wk
7 May
5 Jun
3 wk after
Florence Fennel
Foeniculum vulgare
25 Apr – 2 May
6 Jun
4-5 wk
30 May
4 Jul
6 wk after
30 May
24 Jun
6 wk after
Butter bean
Phaseolus lunatus
Season too short
12 – 19 May
3-4 wk
9 Jun
7 wk after
Onion
Allium cepa (Cepa-gruppen)
25 Jan – 22 Feb
4 Apr
8-12 wk
19 Apr
30 May
0 wk
2 May
20 May
2 wk after
Onion (sets)
Allium cepa (Cepa-gruppen)
13 Apr
19 Jun
1 wk before
13 Apr
9 Jun
1 wk before
Maize
Zea mays
Greenhouse
22 – 29 Mar
5 May
3-4 wk
19 Apr
26 May
0 wk
Swiss Chard
Beta vulgaris (Flavescens-gruppen)
22 – 29 Mar
8 Jul
3-4 wk
19 Apr
29 Jul
0 wk
2 May
19 Jul
2 wk after
Carrot
Daucus carota subsp. sativus var. sativus
19 Apr
9 Jul
0 wk
6 Apr
29 Jun
2 wk before
Palm Kale
Brassica oleracea (Palm Kale-gruppen)
1 – 15 Mar
14 Jun
5-7 wk
19 Apr
19 Jul
0 wk
6 Apr
9 Jul
2 wk before
Potato
Solanum tuberosum
13 – 27 Mar
8 Jun
4-6 wk
24 Apr
6 Jul
1 wk after
24 Apr
26 Jun
1 wk after
Ornamental Kale
Brassica oleracea (Ornamental-gruppen)
1 – 15 Mar
24 Jun
5-7 wk
19 Apr
29 Jul
0 wk
13 Apr
19 Jul
1 wk before
Pumpkin
Cucurbita pepo
Fleece
18 – 25 Apr
20 May
3-4 wk
16 May
10 Jun
4 wk after
Beetroot
Beta vulgaris (Conditiva-gruppen)
22 – 29 Mar
20 Jun
3-4 wk
19 Apr
11 Jul
0 wk
2 May
1 Jul
2 wk after
Red Cabbage
Brassica oleracea (Red Cabbage-gruppen)
8 – 22 Mar
26 Jun
4-6 wk
19 Apr
24 Jul
0 wk
Lettuce
Lactuca sativa
22 – 29 Mar
13 Jul
3-4 wk
19 Apr
3 Aug
0 wk
13 Apr
24 Jul
1 wk before
Savoy Cabbage
Brassica oleracea (Savoy Cabbage-gruppen)
8 – 22 Mar
26 Jun
4-6 wk
19 Apr
24 Jul
0 wk
Shallot (bulbs)
Allium cepa (Aggregatum-gruppen)
9 – 23 Mar
5 Jun
2-4 wk
6 Apr
19 Jun
2 wk before
6 Apr
9 Jun
2 wk before
Shallot (sets)
Allium cepa (Aggregatum-gruppen)
13 Apr
19 Jun
1 wk before
13 Apr
9 Jun
1 wk before
Spinach
Spinacia oleracea
22 – 29 Mar
28 Jul
3-4 wk
19 Apr
18 Aug
0 wk
30 Mar
8 Aug
3 wk before
Sweet potato
Ipomoea batatas
21 May – 4 Jun
4-6 wk
2 Jul
11 wk after
Garden tomato
Solanum lycopersicum
Greenhouse
22 Feb – 8 Mar
14 Apr
6-8 wk
19 Apr
26 May
0 wk
Tomatillo
Physalis ixocarpa
Common Bean
Phaseolus vulgaris
Fleece
9 – 23 Apr
22 May
2-4 wk
7 May
5 Jun
3 wk after
15 May
26 May
4 wk after
White Cabbage
Brassica oleracea (White Cabbage-gruppen)
8 – 22 Mar
26 Jun
4-6 wk
19 Apr
24 Jul
0 wk
Garden pea
Pisum sativum
22 – 29 Mar
28 Jun
3-4 wk
19 Apr
19 Jul
0 wk
13 Apr
9 Jul
1 wk before

Herbs

Plant Sow indoors Transplant Direct sow
Earliest Latest Growing time Earliest Latest Rel. frost Earliest Latest Rel. frost
Basil
Ocimum basilicum
Fleece
4 – 18 Apr
28 Apr
4-6 wk
16 May
26 May
4 wk after
Lemon balm
Melissa officinalis
8 – 22 Feb
24 May
8-10 wk
19 Apr
19 Jul
0 wk
15 May
9 Jul
4 wk after
Dill
Anethum graveolens
13 Apr
29 Jul
1 wk before
Wild chives
Allium schoenoprasum
22 Feb – 8 Mar
7 Jun
6-8 wk
19 Apr
19 Jul
0 wk
13 Apr
9 Jul
1 wk before
Spearmint
Mentha spicata
25 Jan – 22 Feb
24 May
8-12 wk
19 Apr
19 Jul
0 wk
15 May
9 Jul
4 wk after
Coriander
Coriandrum sativum
19 Apr
18 Aug
0 wk
2 May
8 Aug
2 wk after
Garden sage
Salvia officinalis
8 – 22 Feb
9 May
8-10 wk
19 Apr
4 Jul
0 wk
Common thyme
Thymus vulgaris
8 – 22 Feb
14 May
8-10 wk
19 Apr
9 Jul
0 wk
Oregano
Origanum vulgare
22 Feb – 8 Mar
28 May
6-8 wk
19 Apr
9 Jul
0 wk
15 May
29 Jun
4 wk after
Parsley
Petroselinum crispum
22 Feb – 8 Mar
28 May
6-8 wk
19 Apr
9 Jul
0 wk
13 Apr
29 Jun
1 wk before
Rosemary
Salvia rosmarinus
11 Jan – 8 Feb
10 Apr
10-14 wk
19 Apr
19 Jun
0 wk

Annual flowers

Plant Sow indoors Transplant Direct sow
Earliest Latest Growing time Earliest Latest Rel. frost Earliest Latest Rel. frost
Morning glory
Ipomoea tricolor
Fleece
18 – 25 Apr
5 May
3-4 wk
16 May
26 May
4 wk after
Cornflower
Centaurea cyanus
19 Apr
19 Jul
0 wk
13 Apr
9 Jul
1 wk before
Statice
Limonium sinuatum
7 – 21 Mar
10 Apr
8-10 wk
16 May
5 Jun
4 wk after
Sweet William
Dianthus barbatus
22 Feb – 8 Mar
6-8 wk
19 Apr
0 wk
24 Apr
1 wk after
Snow-on-the-mountain
Euphorbia marginata
21 Mar – 4 Apr
24 Apr
6-8 wk
16 May
5 Jun
4 wk after
2 Jul
11 wk after
Pinnate dahlia
Dahlia × pinnata
16 – 30 Mar
26 Apr
6-8 wk
11 May
7 Jun
3 wk after
Pinnate dahlia (tubers)
Dahlia × pinnata
20 Mar – 17 Apr
10 May
4-8 wk
15 May
7 Jun
4 wk after
15 May
28 May
4 wk after
Foxglove
Digitalis purpurea
8 – 22 Feb
8-10 wk
19 Apr
0 wk
2 May
2 wk after
Busy lizzie
Impatiens walleriana
7 Mar – 4 Apr
16 May
8-12 wk
30 May
11 Jul
6 wk after
Creeping zinnia
Sanvitalia procumbens
21 Mar – 4 Apr
4 May
6-8 wk
16 May
15 Jun
4 wk after
Hyacinth bean
Dolichos lablab
Greenhouse
4 – 18 Apr
4-6 wk
16 May
4 wk after
Chinese lantern
Physalis alkekengi
8 – 22 Feb
24 Apr
8-10 wk
19 Apr
19 Jun
0 wk
Love in a mist
Nigella damascena
19 Apr
4 Jul
0 wk
13 Apr
24 Jun
1 wk before
Strawflower
Xerochrysum bracteatum
21 Mar – 4 Apr
14 Apr
6-8 wk
16 May
26 May
4 wk after
2 Jul
11 wk after
Purple-top vervain
Verbena bonariensis
25 Jan – 22 Feb
24 Apr
8-12 wk
19 Apr
19 Jun
0 wk
Cardoon
Cynara cardunculus
21 Feb – 21 Mar
25 Mar
8-12 wk
16 May
20 May
4 wk after
Regal-foxtail
Ptilotus nobilis
Fleece
21 Feb – 21 Mar
21 Mar
8-12 wk
16 May
16 May
4 wk after
Globe amaranth
Gomphrena globosa
Fleece
21 Mar – 4 Apr
4 Apr
6-8 wk
16 May
16 May
4 wk after
Corn poppy
Papaver rhoeas
19 Apr
19 Jul
0 wk
13 Apr
9 Jul
1 wk before
Snapdragon
Antirrhinum majus
25 Jan – 22 Feb
14 May
8-12 wk
19 Apr
9 Jul
0 wk
24 Apr
29 Jun
1 wk after
Flossflower
Ageratum houstonianum
21 Mar – 4 Apr
20 Apr
8-10 wk
30 May
15 Jun
6 wk after
Sweet pea
Lathyrus odoratus
22 Feb – 15 Mar
4 Jun
5-8 wk
19 Apr
9 Jul
0 wk
Stock
Matthiola incana
22 Feb – 8 Mar
7 Jun
6-8 wk
19 Apr
19 Jul
0 wk
2 May
9 Jul
2 wk after
Wormwood
Artemisia absinthium
22 Feb – 8 Mar
8 May
6-8 wk
19 Apr
19 Jun
0 wk
2 May
9 Jun
2 wk after
Mexican sunflower
Tithonia rotundifolia
Fleece
4 – 18 Apr
13 Apr
4-6 wk
16 May
4 wk after
Garden pansy
Viola × wittrockiana
8 – 22 Feb
24 May
8-10 wk
19 Apr
19 Jul
0 wk
24 Apr
9 Jul
1 wk after
Petunia
Petunia
21 Feb – 21 Mar
10 Apr
8-12 wk
16 May
5 Jun
4 wk after
Sweet Scabious
Scabiosa atropurpurea
22 Feb – 8 Mar
8 May
6-8 wk
19 Apr
19 Jun
0 wk
30 May
9 Jun
6 wk after
Common zinnia
Zinnia elegans
4 – 18 Apr
28 Apr
4-6 wk
16 May
26 May
4 wk after
Common morning glory
Ipomoea purpurea
Fleece
11 – 25 Apr
5 May
3-5 wk
16 May
26 May
4 wk after
Garden cosmos
Cosmos bipinnatus
4 – 18 Apr
10 May
4-6 wk
16 May
7 Jun
4 wk after
30 May
6 wk after
Scarlet milkweed
Asclepias curassavica
Fleece
7 Mar – 4 Apr
20 Apr
8-12 wk
30 May
15 Jun
6 wk after
Bee balm
Monarda didyma
25 Jan – 22 Feb
24 Apr
8-12 wk
19 Apr
19 Jun
0 wk
15 May
9 Jun
4 wk after
Yarrow
Achillea millefolium
22 Feb – 8 Mar
8 Apr
6-8 wk
19 Apr
20 May
0 wk
2 May
10 May
2 wk after
Safflower
Carthamus tinctorius
19 Apr
19 Jun
0 wk
13 Apr
9 Jun
1 wk before
Iceland poppy
Papaver nudicaule
Season too short
22 Feb – 8 Mar
28 May
6-8 wk
19 Apr
9 Jul
0 wk
4 Mar
29 Jun
7 wk before
Bishop's flower
Ammi majus
8 – 22 Mar
11 Jun
4-6 wk
19 Apr
9 Jul
0 wk
2 May
29 Jun
2 wk after
Drumsticks
Pycnosorus globosus
Fleece
21 Feb – 7 Mar
9 Mar
10-12 wk
16 May
18 May
4 wk after
Sunflower
Helianthus annuus
18 – 25 Apr
18 Jun
3-4 wk
16 May
9 Jul
4 wk after
15 May
29 Jun
4 wk after
China aster
Callistephus chinensis
21 Mar – 4 Apr
7 Jun
6-8 wk
16 May
19 Jul
4 wk after
30 May
9 Jul
6 wk after
Annual phlox
Phlox drummondii
12 – 26 Mar
4 May
6-8 wk
7 May
15 Jun
3 wk after
30 May
5 Jun
6 wk after
Hollyhock
Alcea rosea
22 Feb – 8 Mar
6-8 wk
19 Apr
0 wk
2 May
2 wk after
Alpine delphinium
Delphinium elatum
25 Jan – 22 Feb
24 Apr
8-12 wk
19 Apr
19 Jun
0 wk
15 May
9 Jun
4 wk after
African marigold
Tagetes erecta
21 Mar – 4 Apr
4 May
6-8 wk
16 May
15 Jun
4 wk after
Black-eyed Susan
Rudbeckia hirta
22 Feb – 8 Mar
28 May
6-8 wk
19 Apr
9 Jul
0 wk
30 May
29 Jun
6 wk after
Wood sage
Salvia nemorosa
8 – 22 Feb
14 Apr
8-10 wk
19 Apr
9 Jun
0 wk
15 May
30 May
4 wk after
Black-eyed susan vine
Thunbergia alata
Fleece
7 Mar – 4 Apr
14 Apr
6-10 wk
16 May
26 May
4 wk after
California goldenpoppy
Eschscholzia californica
19 Apr
19 Jul
0 wk
13 Apr
9 Jul
1 wk before
Painted tongue
Salpiglossis sinuata
7 – 21 Mar
9 May
8-10 wk
16 May
4 Jul
4 wk after
Water forget-me-not
Myosotis scorpioides
22 Feb – 8 Mar
8 May
6-8 wk
19 Apr
19 Jun
0 wk
2 May
9 Jun
2 wk after