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No frost in sight Last frost normally in 8 days (21 May), but frost-free in the forecast.
Method
Rel. frost
Last spring frost (0°C) 21 May Frost 1 of 10 years · 20 years of data
Frost-free season 146 days 21 May – 14 Oct
Probability that frost is over

90% = Half of years are frost-free by this date. More about frost & season →

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Vegetables

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