Q.When to fertilize new plants
When to fertilize new plants that I already used a root zone fertilizer on when planted? We totally overhauled the yard this year. I planted about 20 new perennials and filled 5 planters. With all the plants I amended the soil in organic compost and all mixed in a root zone fertilizer. Should I wait to top dress with an all purpose fertilizer since they already just got the root zone stuff? And, if so, how long? I just don’t want to overdo it on all my new beauties!

Thanks for the link! It was very helpful!

Sounds like an amazing project!
I like to lean on a more conservative use of fertilizer on newly planted perennials.
You have given them a great start with the use of compost and a root zone fertilizer.
No matter what fertilizing method you use, follow manufactures directions.
I personally dilute and feed lightly.
Here is a great link.
https://www.gardeningknowhow.com/garden-how-to/soil-fertilizers/best-times-to-apply-fertilizer.htm