Why is the outer leaf greener than the inner leaf?
Why Is Outer Leaf Greener Than Inner
Certified GKH Gardening Expert
This really depends on the type of plant you're referring to, as it could be normal in some plants (such as with certain varieties or varietgated plants). An issue with light can sometimes cause inner leaves to become more pale in color while outer leaves remain darker green. Nutrient deficient plants can also have symtoms similar to this.