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Rel. frost
Last spring frost (0°C) 21 Apr Frost 3 of 4 years · 20 years of data
Frost-free season 189 days 21 Apr – 27 Oct
Probability that frost is over

25% = 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 Apr
17 Jun
5-7 wk
20 May
22 Jul
4 wk after
14 Apr
12 Jul
1 wk before
Broccoli
Brassica oleracea (Italica-gruppen)
24 Mar – 7 Apr
29 Jun
4-6 wk
5 May
27 Jul
2 wk after
14 Apr
17 Jul
1 wk before
Chili pepper
Capsicum annuum
Fleece
15 Mar – 12 Apr
17 Apr
8-12 wk
7 Jun
12 Jun
7 wk after
Curly Kale
Brassica oleracea (Curly Kale-gruppen)
6 – 20 Feb
12 Jun
5-7 wk
27 Mar
17 Jul
4 wk before
9 Apr
7 Jul
2 wk before
Garden cucumber
Cucumis sativus
18 – 25 May
11 Jun
3-4 wk
15 Jun
2 Jul
8 wk after
Florence Fennel
Foeniculum vulgare
11 – 18 May
9 Jun
4-5 wk
15 Jun
7 Jul
8 wk after
27 May
27 Jun
5 wk after
Butter bean
Phaseolus lunatus
Greenhouse
20 – 27 May
29 May
3-4 wk
17 Jun
19 Jun
8 wk after
Onion
Allium cepa (Cepa-gruppen)
27 Jan – 24 Feb
2 Apr
8-12 wk
21 Apr
28 May
Vid frost
1 May
18 May
1 wk after
Onion (sets)
Allium cepa (Cepa-gruppen)
14 Apr
17 Jun
1 wk before
14 Apr
7 Jun
1 wk before
Maize
Zea mays
10 – 17 May
1 Jun
3-4 wk
7 Jun
22 Jun
7 wk after
Swiss Chard
Beta vulgaris (Flavescens-gruppen)
22 – 29 Apr
6 Jul
3-4 wk
20 May
27 Jul
4 wk after
1 May
17 Jul
1 wk after
Carrot
Daucus carota subsp. sativus var. sativus
9 Apr
27 Jun
2 wk before
Palm Kale
Brassica oleracea (Palm Kale-gruppen)
6 – 20 Feb
12 Jun
5-7 wk
27 Mar
17 Jul
4 wk before
9 Apr
7 Jul
2 wk before
Potato
Solanum tuberosum
15 – 29 Mar
6 Jun
4-6 wk
26 Apr
4 Jul
1 wk after
26 Apr
24 Jun
1 wk after
Ornamental Kale
Brassica oleracea (Ornamental-gruppen)
6 – 20 Feb
22 Jun
5-7 wk
27 Mar
27 Jul
4 wk before
14 Apr
17 Jul
1 wk before
Pumpkin
Cucurbita pepo
18 – 25 May
25 Jun
3-4 wk
15 Jun
16 Jul
8 wk after
Beetroot
Beta vulgaris (Conditiva-gruppen)
22 – 29 Apr
17 Jun
3-4 wk
20 May
8 Jul
4 wk after
1 May
28 Jun
1 wk after
Red Cabbage
Brassica oleracea (Red Cabbage-gruppen)
24 Mar – 7 Apr
24 Jun
4-6 wk
5 May
22 Jul
2 wk after
Lettuce
Lactuca sativa
17 – 24 Mar
11 Jul
3-4 wk
14 Apr
1 Aug
1 wk before
14 Apr
22 Jul
1 wk before
Savoy Cabbage
Brassica oleracea (Savoy Cabbage-gruppen)
3 – 17 Mar
24 Jun
4-6 wk
14 Apr
22 Jul
1 wk before
Shallot (bulbs)
Allium cepa (Aggregatum-gruppen)
12 – 26 Mar
3 Jun
2-4 wk
9 Apr
17 Jun
2 wk before
9 Apr
7 Jun
2 wk before
Shallot (sets)
Allium cepa (Aggregatum-gruppen)
14 Apr
17 Jun
1 wk before
14 Apr
7 Jun
1 wk before
Spinach
Spinacia oleracea
9 – 16 Mar
26 Jul
3-4 wk
6 Apr
16 Aug
2 wk before
3 Apr
6 Aug
3 wk before
Sweet potato
Ipomoea batatas
18 May – 1 Jun
4-6 wk
29 Jun
10 wk after
Garden tomato
Solanum lycopersicum
12 – 26 Apr
11 May
6-8 wk
7 Jun
22 Jun
7 wk after
Tomatillo
Physalis ixocarpa
Common Bean
Phaseolus vulgaris
10 – 24 May
27 Jun
2-4 wk
7 Jun
11 Jul
7 wk after
27 May
1 Jul
5 wk after
White Cabbage
Brassica oleracea (White Cabbage-gruppen)
24 Mar – 7 Apr
24 Jun
4-6 wk
5 May
22 Jul
2 wk after
Garden pea
Pisum sativum
9 – 16 Mar
26 Jun
3-4 wk
6 Apr
17 Jul
2 wk before
14 Apr
7 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
4 – 18 May
3 Jun
4-6 wk
15 Jun
1 Jul
8 wk after
Lemon balm
Melissa officinalis
10 – 24 Feb
22 May
8-10 wk
21 Apr
17 Jul
Vid frost
12 May
7 Jul
3 wk after
Dill
Anethum graveolens
14 Apr
27 Jul
1 wk before
Wild chives
Allium schoenoprasum
30 Jan – 13 Feb
5 Jun
6-8 wk
27 Mar
17 Jul
4 wk before
14 Apr
7 Jul
1 wk before
Spearmint
Mentha spicata
12 Jan – 9 Feb
22 May
8-12 wk
6 Apr
17 Jul
2 wk before
12 May
7 Jul
3 wk after
Coriander
Coriandrum sativum
1 May
6 Aug
1 wk after
Garden sage
Salvia officinalis
11 – 25 Mar
7 May
8-10 wk
20 May
2 Jul
4 wk after
Common thyme
Thymus vulgaris
24 Feb – 10 Mar
12 May
8-10 wk
5 May
7 Jul
2 wk after
Oregano
Origanum vulgare
2 – 16 Mar
26 May
6-8 wk
27 Apr
7 Jul
1 wk after
12 May
27 Jun
3 wk after
Parsley
Petroselinum crispum
9 – 23 Feb
26 May
6-8 wk
6 Apr
7 Jul
2 wk before
14 Apr
27 Jun
1 wk before
Rosemary
Salvia rosmarinus
11 Feb – 11 Mar
8 Apr
10-14 wk
20 May
17 Jun
4 wk after

Annual flowers

Plant Sow indoors Transplant Direct sow
Earliest Latest Growing time Earliest Latest Rel. frost Earliest Latest Rel. frost
Morning glory
Ipomoea tricolor
18 – 25 May
10 Jun
3-4 wk
15 Jun
1 Jul
8 wk after
Cornflower
Centaurea cyanus
6 Apr
17 Jul
2 wk before
14 Apr
7 Jul
1 wk before
Statice
Limonium sinuatum
29 Mar – 12 Apr
11 May
8-10 wk
7 Jun
6 Jul
7 wk after
Sweet William
Dianthus barbatus
9 – 23 Feb
6-8 wk
6 Apr
2 wk before
26 Apr
1 wk after
Snow-on-the-mountain
Euphorbia marginata
12 – 26 Apr
25 May
6-8 wk
7 Jun
6 Jul
7 wk after
29 Jun
10 wk after
Pinnate dahlia
Dahlia × pinnata
6 – 20 Apr
26 May
6-8 wk
1 Jun
7 Jul
6 wk after
Pinnate dahlia (tubers)
Dahlia × pinnata
17 Mar – 14 Apr
9 Jun
4-8 wk
12 May
7 Jul
3 wk after
12 May
27 Jun
3 wk after
Foxglove
Digitalis purpurea
26 Jan – 9 Feb
8-10 wk
6 Apr
2 wk before
1 May
1 wk after
Busy lizzie
Impatiens walleriana
23 Mar – 20 Apr
29 Jun
8-12 wk
15 Jun
24 Aug
8 wk after
Creeping zinnia
Sanvitalia procumbens
12 – 26 Apr
4 Jun
6-8 wk
7 Jun
16 Jul
7 wk after
Hyacinth bean
Dolichos lablab
Fleece
4 – 18 May
4 May
4-6 wk
15 Jun
8 wk after
Chinese lantern
Physalis alkekengi
11 – 25 Mar
22 Apr
8-10 wk
20 May
17 Jun
4 wk after
Love in a mist
Nigella damascena
14 Apr
22 Jun
1 wk before
Strawflower
Xerochrysum bracteatum
12 – 26 Apr
15 May
6-8 wk
7 Jun
26 Jun
7 wk after
29 Jun
10 wk after
Purple-top vervain
Verbena bonariensis
25 Feb – 25 Mar
22 Apr
8-12 wk
20 May
17 Jun
4 wk after
Cardoon
Cynara cardunculus
15 Mar – 12 Apr
23 Mar
8-12 wk
7 Jun
7 wk after
Regal-foxtail
Ptilotus nobilis
23 Mar – 20 Apr
26 Apr
8-12 wk
15 Jun
21 Jun
8 wk after
Globe amaranth
Gomphrena globosa
20 Apr – 4 May
10 May
6-8 wk
15 Jun
21 Jun
8 wk after
Corn poppy
Papaver rhoeas
14 Apr
7 Jul
1 wk before
Snapdragon
Antirrhinum majus
20 Jan – 17 Feb
12 May
8-12 wk
14 Apr
7 Jul
1 wk before
26 Apr
27 Jun
1 wk after
Flossflower
Ageratum houstonianum
6 – 20 Apr
21 May
8-10 wk
15 Jun
16 Jul
8 wk after
Sweet pea
Lathyrus odoratus
9 Feb – 2 Mar
2 Jun
5-8 wk
6 Apr
7 Jul
2 wk before
Stock
Matthiola incana
17 Feb – 3 Mar
5 Jun
6-8 wk
14 Apr
17 Jul
1 wk before
1 May
7 Jul
1 wk after
Wormwood
Artemisia absinthium
9 – 23 Feb
6 May
6-8 wk
6 Apr
17 Jun
2 wk before
1 May
7 Jun
1 wk after
Mexican sunflower
Tithonia rotundifolia
4 – 18 May
19 May
4-6 wk
15 Jun
16 Jun
8 wk after
Garden pansy
Viola × wittrockiana
16 – 30 Jan
22 May
8-10 wk
27 Mar
17 Jul
4 wk before
26 Apr
7 Jul
1 wk after
Petunia
Petunia
15 Mar – 12 Apr
11 May
8-12 wk
7 Jun
6 Jul
7 wk after
Sweet Scabious
Scabiosa atropurpurea
25 Mar – 8 Apr
6 May
6-8 wk
20 May
17 Jun
4 wk after
27 May
7 Jun
5 wk after
Common zinnia
Zinnia elegans
26 Apr – 10 May
11 Jun
4-6 wk
7 Jun
9 Jul
7 wk after
Common morning glory
Ipomoea purpurea
11 – 25 May
10 Jun
3-5 wk
15 Jun
1 Jul
8 wk after
Garden cosmos
Cosmos bipinnatus
26 Apr – 10 May
9 Jun
4-6 wk
7 Jun
7 Jul
7 wk after
27 May
27 Jun
5 wk after
Scarlet milkweed
Asclepias curassavica
27 Mar – 24 Apr
26 May
8-12 wk
19 Jun
21 Jul
8 wk after
Bee balm
Monarda didyma
27 Jan – 24 Feb
22 Apr
8-12 wk
21 Apr
17 Jun
Vid frost
12 May
7 Jun
3 wk after
Yarrow
Achillea millefolium
9 – 23 Feb
6 Apr
6-8 wk
6 Apr
18 May
2 wk before
1 May
8 May
1 wk after
Safflower
Carthamus tinctorius
6 Apr
17 Jun
2 wk before
14 Apr
7 Jun
1 wk before
Iceland poppy
Papaver nudicaule
30 Jan – 13 Feb
26 May
6-8 wk
27 Mar
7 Jul
4 wk before
9 Apr
27 Jun
2 wk before
Bishop's flower
Ammi majus
20 Mar – 3 Apr
9 Jun
4-6 wk
1 May
7 Jul
1 wk after
1 May
27 Jun
1 wk after
Drumsticks
Pycnosorus globosus
23 Mar – 6 Apr
31 Mar
10-12 wk
15 Jun
8 wk after
Sunflower
Helianthus annuus
10 – 17 May
16 Jun
3-4 wk
7 Jun
7 Jul
7 wk after
12 May
27 Jun
3 wk after
China aster
Callistephus chinensis
12 – 26 Apr
5 Jun
6-8 wk
7 Jun
17 Jul
7 wk after
27 May
7 Jul
5 wk after
Annual phlox
Phlox drummondii
31 Mar – 14 Apr
4 Jun
6-8 wk
26 May
16 Jul
5 wk after
27 May
6 Jul
5 wk after
Hollyhock
Alcea rosea
9 – 23 Feb
6-8 wk
6 Apr
2 wk before
1 May
1 wk after
Alpine delphinium
Delphinium elatum
10 Feb – 10 Mar
22 Apr
8-12 wk
5 May
17 Jun
2 wk after
12 May
7 Jun
3 wk after
African marigold
Tagetes erecta
12 – 26 Apr
4 Jun
6-8 wk
7 Jun
16 Jul
7 wk after
Black-eyed Susan
Rudbeckia hirta
25 Mar – 8 Apr
26 May
6-8 wk
20 May
7 Jul
4 wk after
27 May
27 Jun
5 wk after
Wood sage
Salvia nemorosa
16 Feb – 2 Mar
12 Apr
8-10 wk
27 Apr
7 Jun
1 wk after
12 May
28 May
3 wk after
Black-eyed susan vine
Thunbergia alata
6 Apr – 4 May
20 May
6-10 wk
15 Jun
1 Jul
8 wk after
California goldenpoppy
Eschscholzia californica
14 Apr
7 Jul
1 wk before
Painted tongue
Salpiglossis sinuata
29 Mar – 12 Apr
12 May
8-10 wk
7 Jun
7 Jul
7 wk after
Water forget-me-not
Myosotis scorpioides
9 – 23 Feb
6 May
6-8 wk
6 Apr
17 Jun
2 wk before
1 May
7 Jun
1 wk after