Answer: Sago palms will grow in full sun to part shade so I don't think the six hours of sunshine is hurting it. Yellowing fronds usually indicates overwatering. Sagos like to be watered regularly but the soil needs to dry out slightly between waterings. Try adjusting your watering so that the soil is thoroughly saturated and then allowed to dry. Usually once a week is fine for sagos, twice if the weather is really hot and the soil dries out quickly. The yellowing fronds won't green up again but your sago should put out healthy new growth and you can eventually cut off the affected fronds. You didn't mention how long ago you planted your sago. If it was recently, it might just be trying to adjust to its new home. It takes a while for the stress to show up on the fronds so what you are seeing now may be from stress when it was first planted. Just be careful with the watering and watch for healthy new growth. Best wishes with your sago.
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