diff --git a/benches/growable.rs b/benches/growable.rs
index ca7ac8a9045..ea6d2ed9a51 100644
--- a/benches/growable.rs
+++ b/benches/growable.rs
@@ -19,6 +19,16 @@ fn add_benchmark(c: &mut Criterion) {
         })
     });
 
+    c.bench_function("growable::dyn_primitive::non_null::non_null", |b| {
+        b.iter(|| {
+            let mut a: Box<dyn Growable> =
+                Box::new(GrowablePrimitive::new(vec![&i32_array], false, 1026 * 10));
+
+            let iter = values.clone().into_iter().map(|start| (0, start, 10));
+            a.extend_from_iter(Box::new(iter));
+        })
+    });
+
     let i32_array = create_primitive_array::<i32>(1026 * 10, 0.0);
     c.bench_function("growable::primitive::non_null::null", |b| {
         b.iter(|| {
diff --git a/src/array/growable/mod.rs b/src/array/growable/mod.rs
index c6d45356237..ef190ec3ca3 100644
--- a/src/array/growable/mod.rs
+++ b/src/array/growable/mod.rs
@@ -40,6 +40,13 @@ pub trait Growable<'a> {
     /// Extends this [`Growable`] with null elements, disregarding the bound arrays
     fn extend_validity(&mut self, additional: usize);
 
+    /// Extends this [`Growable`] by iterator.
+    fn extend_from_iter(&mut self, iter: Box<dyn Iterator<Item = (usize, usize, usize)>>) {
+        for (index, start, len) in iter {
+            self.extend(index, start, len);
+        }
+    }
+
     /// Converts this [`Growable`] to an [`Arc<dyn Array>`], thereby finishing the mutation.
     /// Self will be empty after such operation.
     fn as_arc(&mut self) -> std::sync::Arc<dyn Array> {