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Rel. frost
Last spring frost (0°C) 4 May Frost 1 of 10 years · 20 years of data
Frost-free season 199 days 4 May – 19 Nov
Probability that frost is over

90% = 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)
14 – 28 Apr
19 Jun
5-7 wk
2 Jun
24 Jul
4 wk after
27 Apr
14 Jul
1 wk before
Broccoli
Brassica oleracea (Italica-gruppen)
6 – 20 Apr
1 Jul
4-6 wk
18 May
29 Jul
2 wk after
27 Apr
19 Jul
1 wk before
Chili pepper
Capsicum annuum
Fleece
28 Mar – 25 Apr
10 Apr
8-12 wk
20 Jun
7 wk after
Curly Kale
Brassica oleracea (Curly Kale-gruppen)
19 Feb – 5 Mar
14 Jun
5-7 wk
9 Apr
19 Jul
4 wk before
22 Apr
9 Jul
2 wk before
Garden cucumber
Cucumis sativus
31 May – 7 Jun
4 Jun
3-4 wk
28 Jun
8 wk after
Florence Fennel
Foeniculum vulgare
24 – 31 May
11 Jun
4-5 wk
28 Jun
9 Jul
8 wk after
9 Jun
29 Jun
5 wk after
Butter bean
Phaseolus lunatus
Greenhouse
2 – 9 Jun
3-4 wk
30 Jun
8 wk after
Onion
Allium cepa (Cepa-gruppen)
9 Feb – 9 Mar
4 Apr
8-12 wk
4 May
30 May
Vid frost
14 May
20 May
1 wk after
Onion (sets)
Allium cepa (Cepa-gruppen)
27 Apr
19 Jun
1 wk before
27 Apr
9 Jun
1 wk before
Maize
Zea mays
23 – 30 May
25 May
3-4 wk
20 Jun
7 wk after
Swiss Chard
Beta vulgaris (Flavescens-gruppen)
5 – 12 May
8 Jul
3-4 wk
2 Jun
29 Jul
4 wk after
14 May
19 Jul
1 wk after
Carrot
Daucus carota subsp. sativus var. sativus
22 Apr
29 Jun
2 wk before
Palm Kale
Brassica oleracea (Palm Kale-gruppen)
19 Feb – 5 Mar
14 Jun
5-7 wk
9 Apr
19 Jul
4 wk before
22 Apr
9 Jul
2 wk before
Potato
Solanum tuberosum
28 Mar – 11 Apr
11 Jun
4-6 wk
9 May
9 Jul
1 wk after
9 May
29 Jun
1 wk after
Ornamental Kale
Brassica oleracea (Ornamental-gruppen)
19 Feb – 5 Mar
24 Jun
5-7 wk
9 Apr
29 Jul
4 wk before
27 Apr
19 Jul
1 wk before
Pumpkin
Cucurbita pepo
31 May – 7 Jun
21 Jun
3-4 wk
28 Jun
12 Jul
8 wk after
Beetroot
Beta vulgaris (Conditiva-gruppen)
5 – 12 May
7 Jul
3-4 wk
2 Jun
28 Jul
4 wk after
14 May
18 Jul
1 wk after
Red Cabbage
Brassica oleracea (Red Cabbage-gruppen)
6 – 20 Apr
26 Jun
4-6 wk
18 May
24 Jul
2 wk after
Lettuce
Lactuca sativa
30 Mar – 6 Apr
13 Jul
3-4 wk
27 Apr
3 Aug
1 wk before
27 Apr
24 Jul
1 wk before
Savoy Cabbage
Brassica oleracea (Savoy Cabbage-gruppen)
16 – 30 Mar
26 Jun
4-6 wk
27 Apr
24 Jul
1 wk before
Shallot (bulbs)
Allium cepa (Aggregatum-gruppen)
25 Mar – 8 Apr
5 Jun
2-4 wk
22 Apr
19 Jun
2 wk before
22 Apr
9 Jun
2 wk before
Shallot (sets)
Allium cepa (Aggregatum-gruppen)
27 Apr
19 Jun
1 wk before
27 Apr
9 Jun
1 wk before
Spinach
Spinacia oleracea
22 – 29 Mar
28 Jul
3-4 wk
19 Apr
18 Aug
2 wk before
16 Apr
8 Aug
3 wk before
Sweet potato
Ipomoea batatas
31 May – 14 Jun
4-6 wk
12 Jul
10 wk after
Garden tomato
Solanum lycopersicum
25 Apr – 9 May
4 May
6-8 wk
20 Jun
7 wk after
Tomatillo
Physalis ixocarpa
Common Bean
Phaseolus vulgaris
23 May – 6 Jun
23 Jun
2-4 wk
20 Jun
7 Jul
7 wk after
9 Jun
27 Jun
5 wk after
White Cabbage
Brassica oleracea (White Cabbage-gruppen)
6 – 20 Apr
26 Jun
4-6 wk
18 May
24 Jul
2 wk after
Garden pea
Pisum sativum
22 – 29 Mar
28 Jun
3-4 wk
19 Apr
19 Jul
2 wk before
27 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
17 – 31 May
30 May
4-6 wk
28 Jun
8 wk after
Lemon balm
Melissa officinalis
23 Feb – 9 Mar
24 May
8-10 wk
4 May
19 Jul
Vid frost
25 May
9 Jul
3 wk after
Dill
Anethum graveolens
27 Apr
29 Jul
1 wk before
Wild chives
Allium schoenoprasum
12 – 26 Feb
7 Jun
6-8 wk
9 Apr
19 Jul
4 wk before
27 Apr
9 Jul
1 wk before
Spearmint
Mentha spicata
25 Jan – 22 Feb
24 May
8-12 wk
19 Apr
19 Jul
2 wk before
25 May
9 Jul
3 wk after
Coriander
Coriandrum sativum
14 May
8 Aug
1 wk after
Garden sage
Salvia officinalis
24 Mar – 7 Apr
9 May
8-10 wk
2 Jun
4 Jul
4 wk after
Common thyme
Thymus vulgaris
9 – 23 Mar
14 May
8-10 wk
18 May
9 Jul
2 wk after
Oregano
Origanum vulgare
15 – 29 Mar
28 May
6-8 wk
10 May
9 Jul
1 wk after
25 May
29 Jun
3 wk after
Parsley
Petroselinum crispum
22 Feb – 8 Mar
28 May
6-8 wk
19 Apr
9 Jul
2 wk before
27 Apr
29 Jun
1 wk before
Rosemary
Salvia rosmarinus
24 Feb – 24 Mar
10 Apr
10-14 wk
2 Jun
19 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
31 May – 7 Jun
6 Jun
3-4 wk
28 Jun
8 wk after
Cornflower
Centaurea cyanus
19 Apr
19 Jul
2 wk before
27 Apr
9 Jul
1 wk before
Statice
Limonium sinuatum
11 – 25 Apr
7 May
8-10 wk
20 Jun
2 Jul
7 wk after
Sweet William
Dianthus barbatus
22 Feb – 8 Mar
6-8 wk
19 Apr
2 wk before
9 May
1 wk after
Snow-on-the-mountain
Euphorbia marginata
25 Apr – 9 May
21 May
6-8 wk
20 Jun
2 Jul
7 wk after
12 Jul
10 wk after
Pinnate dahlia
Dahlia × pinnata
19 Apr – 3 May
27 May
6-8 wk
14 Jun
8 Jul
6 wk after
Pinnate dahlia (tubers)
Dahlia × pinnata
30 Mar – 27 Apr
10 Jun
4-8 wk
25 May
8 Jul
3 wk after
25 May
28 Jun
3 wk after
Foxglove
Digitalis purpurea
8 – 22 Feb
8-10 wk
19 Apr
2 wk before
14 May
1 wk after
Busy lizzie
Impatiens walleriana
5 Apr – 3 May
29 Jun
8-12 wk
28 Jun
24 Aug
8 wk after
Creeping zinnia
Sanvitalia procumbens
25 Apr – 9 May
31 May
6-8 wk
20 Jun
12 Jul
7 wk after
Hyacinth bean
Dolichos lablab
Greenhouse
9 – 23 May
12 May
4-6 wk
20 Jun
7 wk after
Chinese lantern
Physalis alkekengi
24 Mar – 7 Apr
24 Apr
8-10 wk
2 Jun
19 Jun
4 wk after
Love in a mist
Nigella damascena
27 Apr
24 Jun
1 wk before
Strawflower
Xerochrysum bracteatum
25 Apr – 9 May
11 May
6-8 wk
20 Jun
22 Jun
7 wk after
12 Jul
10 wk after
Purple-top vervain
Verbena bonariensis
10 Mar – 7 Apr
24 Apr
8-12 wk
2 Jun
19 Jun
4 wk after
Cardoon
Cynara cardunculus
28 Mar – 25 Apr
8-12 wk
20 Jun
7 wk after
Regal-foxtail
Ptilotus nobilis
5 Apr – 3 May
22 Apr
8-12 wk
28 Jun
8 wk after
Globe amaranth
Gomphrena globosa
3 – 17 May
6 May
6-8 wk
28 Jun
8 wk after
Corn poppy
Papaver rhoeas
27 Apr
9 Jul
1 wk before
Snapdragon
Antirrhinum majus
2 Feb – 2 Mar
14 May
8-12 wk
27 Apr
9 Jul
1 wk before
9 May
29 Jun
1 wk after
Flossflower
Ageratum houstonianum
19 Apr – 3 May
17 May
8-10 wk
28 Jun
12 Jul
8 wk after
Sweet pea
Lathyrus odoratus
22 Feb – 15 Mar
4 Jun
5-8 wk
19 Apr
9 Jul
2 wk before
Stock
Matthiola incana
2 – 16 Mar
7 Jun
6-8 wk
27 Apr
19 Jul
1 wk before
14 May
9 Jul
1 wk after
Wormwood
Artemisia absinthium
22 Feb – 8 Mar
8 May
6-8 wk
19 Apr
19 Jun
2 wk before
14 May
9 Jun
1 wk after
Mexican sunflower
Tithonia rotundifolia
Fleece
9 – 23 May
27 May
4-6 wk
20 Jun
24 Jun
7 wk after
Garden pansy
Viola × wittrockiana
29 Jan – 12 Feb
24 May
8-10 wk
9 Apr
19 Jul
4 wk before
9 May
9 Jul
1 wk after
Petunia
Petunia
28 Mar – 25 Apr
7 May
8-12 wk
20 Jun
2 Jul
7 wk after
Sweet Scabious
Scabiosa atropurpurea
7 – 21 Apr
8 May
6-8 wk
2 Jun
19 Jun
4 wk after
9 Jun
9 Jun
5 wk after
Common zinnia
Zinnia elegans
9 – 23 May
11 Jun
4-6 wk
20 Jun
9 Jul
7 wk after
Common morning glory
Ipomoea purpurea
24 May – 7 Jun
6 Jun
3-5 wk
28 Jun
8 wk after
Garden cosmos
Cosmos bipinnatus
9 – 23 May
10 Jun
4-6 wk
20 Jun
8 Jul
7 wk after
9 Jun
28 Jun
5 wk after
Scarlet milkweed
Asclepias curassavica
9 Apr – 7 May
22 May
8-12 wk
2 Jul
17 Jul
8 wk after
Bee balm
Monarda didyma
9 Feb – 9 Mar
24 Apr
8-12 wk
4 May
19 Jun
Vid frost
25 May
9 Jun
3 wk after
Yarrow
Achillea millefolium
22 Feb – 8 Mar
8 Apr
6-8 wk
19 Apr
20 May
2 wk before
14 May
1 wk after
Safflower
Carthamus tinctorius
19 Apr
19 Jun
2 wk before
27 Apr
9 Jun
1 wk before
Iceland poppy
Papaver nudicaule
12 – 26 Feb
28 May
6-8 wk
9 Apr
9 Jul
4 wk before
22 Apr
29 Jun
2 wk before
Bishop's flower
Ammi majus
2 – 16 Apr
11 Jun
4-6 wk
14 May
9 Jul
1 wk after
14 May
29 Jun
1 wk after
Drumsticks
Pycnosorus globosus
Fleece
28 Mar – 11 Apr
9 Apr
10-12 wk
20 Jun
7 wk after
Sunflower
Helianthus annuus
23 – 30 May
18 Jun
3-4 wk
20 Jun
9 Jul
7 wk after
25 May
29 Jun
3 wk after
China aster
Callistephus chinensis
25 Apr – 9 May
7 Jun
6-8 wk
20 Jun
19 Jul
7 wk after
9 Jun
9 Jul
5 wk after
Annual phlox
Phlox drummondii
13 – 27 Apr
31 May
6-8 wk
8 Jun
12 Jul
5 wk after
9 Jun
2 Jul
5 wk after
Hollyhock
Alcea rosea
22 Feb – 8 Mar
6-8 wk
19 Apr
2 wk before
14 May
1 wk after
Alpine delphinium
Delphinium elatum
23 Feb – 23 Mar
24 Apr
8-12 wk
18 May
19 Jun
2 wk after
25 May
9 Jun
3 wk after
African marigold
Tagetes erecta
25 Apr – 9 May
31 May
6-8 wk
20 Jun
12 Jul
7 wk after
Black-eyed Susan
Rudbeckia hirta
7 – 21 Apr
28 May
6-8 wk
2 Jun
9 Jul
4 wk after
9 Jun
29 Jun
5 wk after
Wood sage
Salvia nemorosa
1 – 15 Mar
14 Apr
8-10 wk
10 May
9 Jun
1 wk after
25 May
30 May
3 wk after
Black-eyed susan vine
Thunbergia alata
19 Apr – 17 May
16 May
6-10 wk
28 Jun
8 wk after
California goldenpoppy
Eschscholzia californica
27 Apr
9 Jul
1 wk before
Painted tongue
Salpiglossis sinuata
11 – 25 Apr
14 May
8-10 wk
20 Jun
9 Jul
7 wk after
Water forget-me-not
Myosotis scorpioides
22 Feb – 8 Mar
8 May
6-8 wk
19 Apr
19 Jun
2 wk before
14 May
9 Jun
1 wk after