Nested Green is a Basic Blooncard in Bloons Card Storm. It spawns a Nested Blue if it is destroyed, which does not inherit any modified properties of its parent (e.g. its Delay or being On Fire). It can be summoned from a Nested Yellow.
Compared to a normal Green Bloon, Nested Green has 10 less HP, one less charge, and 2 delay, with its only upside being the ability to spawn extra bloons. The one less charge and 2 delay is critically bad, as it’s speed is extremely slow and it’s one charge makes it fairly non-threatening. It has as many Bloons per card as Swarm Green Bloon, but the long delay before all three Bloons actually come out makes it less effective in swarm decks.
Nested Greens have a total of 170 HP per card, which is almost twice that of a single Green Bloon for the same cost each, more if playing on Dark Castle. However, overall HP per card is still less; Green Bloon cards have 180 total HP each, and Swarm Greens have 210 total HP per card. The high health is compensated by the high delay.
Nested Greens is often non-threatening, but at least cheap to get out of your hand. Spawned Nested Blues and Red Bloons effectively have 1 extra delay, so this card is often best used as a supplement to other cards which benefit from your board being more full.
Like Nested Yellow, a lone Nested Green is weak to basically any early game monkey, as almost all of them will have enough time to break apart all its HP and its descendants. Instead, combine Nested Green with other Bloons to try and offset its weaknesses.