How many weeks after planting are trees, shrubs, and ground covers ideally fertilized?

Fertilizing trees, shrubs, and ground covers 4-6 weeks after planting is ideal because this timing allows the plants to establish their root systems before introducing additional nutrients. Initially, newly planted flora need to focus on root growth and acclimatization to their environment. By waiting 4-6 weeks, you allow enough time for the roots to start developing while also ensuring that the plants are not stressed from nutrient applications too early in their establishment period. This period supports healthier growth, as the plants can better utilize the fertilizers when they are starting to actively grow. Fertilization too soon can lead to root burn or excessive growth without strong foundational root systems, ultimately compromising the plants' health.