I Have 2 Emory Barrel Cacti In 6″pots For 5 Years.

Question

I got them at about 2-1/2″round are now 3″round & 5″tall pointed not round under grow light for cactus. What is wrong ?

Answer 1

It may be reaching for the light. They need as much sun as possible, and grow lights are never quite the same. Do you have a window nearby besides the grow lights? That would help. Here are more tips:

https://www.gardeningknowhow.com/ornamental/cacti-succulents/barrel-cactus/grow-an-emorys-barrel-cactus.htm

https://apps.cals.arizona.edu/arboretum/taxon.aspx?id=957