Siam Queen

CultivarOcimum basilicum 'Siam Queen'

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Basil (the species)
Photo: Photo by David J. Stang · CC BY-SA 4.0 · Wikimedia Commons

Fact sheet

every fact quoted from its source
Days to germination5–10 days

from Basil · “5-10 days at 65-70°F (18-21°C).” — How to Grow Basil From Seed | Johnny's Selected Seeds

Days to maturity60–90 days

from Basil · “The typical days to maturity range from 60 to 90 days” — Genovese Basil Days to Maturity: From Seed to Harvest Timeline

Germination temperature72.5–82.5 °F

from Basil · “During germination, keep soil warm at 70-80°F” — Genovese Basil Days to Maturity: From Seed to Harvest Timeline

Waterconsistent water

from Basil · “consistent water” — Genovese Basil Days to Maturity: From Seed to Harvest Timeline

Hardiness zonesAnnual

from Basil · “Annual.” — How to Grow Basil From Seed | Johnny's Selected Seeds

Spacing5–8 in

from Basil · “Plant seeds 1/4" deep, 2-3 seeds per inch, in rows 18" apart. Firm the soil over the seeds. Thinning is not necessary, but a final spacing of 4-8" apart produces healthy, full plants.” — How to Grow Basil From Seed | Johnny's Selected Seeds

Height4.5–6.5 in

from Basil · “At 60 days, your basil should be 6-8 inches tall” — Genovese Basil Days to Maturity: From Seed to Harvest Timeline

Start indoors6 weeks before last frost

from Basil · “Sow indoors 6 weeks prior to setting out.” — How to Grow Basil From Seed | Johnny's Selected Seeds

Ready whenjust before the plants start to flower. Cut the entire plant 4-6" above the ground to promote a second growth.

from Basil · “Begin light harvesting after plants have become established. It is best done in the early morning when the temperature is cooler and the leaves are less likely to wilt. A full harvest should be completed just before the plants start to flower. Cut the entire plant 4-6" above the ground to promote a ” — How to Grow Basil From Seed | Johnny's Selected Seeds

Edible partsleaves

from Basil · “I like to pick leaves in the morning” — Genovese Basil Days to Maturity: From Seed to Harvest Timeline

Indoorsgrow lights

from Basil · “grow lights make the biggest difference indoors” — Genovese Basil Days to Maturity: From Seed to Harvest Timeline

Keep away fromsage, lavender, fennel

from Basil · “Basil should not be planted with sage, lavender, or fennel” — Basil Companion Plants: 10 Best Plants to Grow with Basil | Almanac.com

Siam Queen hasn't been researched on its own yet; these facts are for the species as a whole.

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