Is bone meal good for Cannas

Question

Or all bulbs

Answer 1

Bone meal has been recommended for bulbs for decades. However, whether it's a good idea depends on where you live. Some soils are already high in phosphorus, bone meal's main nutrient. Adding more on a regular basis may worsen plants' performance. Only a soil test can tell if phosphorus is a good amendment for your garden. Cannas do need regular feeding, and a fertilizer higher in phosphorous is recommended.

https://www.gardeningknowhow.com/garden-how-to/soil-fertilizers/bone-meal-fertilizer.htm

https://www.gardeningknowhow.com/garden-how-to/soil-fertilizers/testing-soil.htm

https://www.gardeningknowhow.com/ornamental/bulbs/canna/canna-lily-care.htm

Answer 2

Bone meal has been recommended for bulbs for decades. However, whether this is, in truth, a good idea depends on where you live. Most Midwest soils are already high in phosphorus, bone meal's main nutrient. Adding more on a regular basis may worsen plants' performance. Only a soil test can tell if phosphorus is a good amendment for your garden.
https://extension.illinois.edu/blogs/green-speak/2018-05-03-how-do-soil-test
https://www.gardeningknowhow.com/garden-how-to/soil-fertilizers/bone-meal-fertilizer.htm