How To Tell Age Of Monstera

You can tell the age of a monstera by counting its leaves, checking for fenestrations, and measuring its overall height and stem thickness.
 
If you’ve been wondering how to tell age of monstera accurately, the truth is that these tropical beauties don’t come with a birth certificate.
 
But there are several reliable visual clues that give you a pretty solid estimate of how old your plant might be.
 
In this post, we’ll break down the most effective ways to tell age of monstera, from leaf development to root structure, so you can finally stop guessing.
 
Let’s dig into the fascinating world of monstera aging and help you become a plant detective.
 

Why Leaf Count Helps You Tell Age of Monstera

The quickest way to tell age of monstera is by counting the number of mature leaves it has produced.
 
Young monsteras start with just a few small leaves, usually between 3 and 5 when they’re about a year old.
 
Each growing season, a healthy monstera will push out one or two new leaves, sometimes more if it’s getting perfect light and nutrients.
 
So if you have a monstera with 10 to 15 leaves, you’re likely looking at a plant that’s between 3 and 5 years old.
 
A monstera with 20 or more leaves has probably been growing happily for a decade or more.
 

1. Counting Leaves on Younger Monsteras

For the first couple of years, counting leaves is your most reliable method to tell age of monstera.
 
A monstera that’s under one year old typically has fewer than 6 leaves, and they’ll be small and mostly solid.
 
By year two, you can expect around 8 to 10 leaves, and they’ll start showing slight indentations along the edges.
 
Just remember that leaf production slows down in winter, so a plant with fewer leaves might simply be older but dormant.
 

2. The Role of Leaf Size in Aging

Leaf size is another great clue when you want to tell age of monstera.
 
Baby monsteras produce leaves that are only a few inches across, even when fully mature.
 
As the plant gets older, each new leaf comes in bigger than the last, and after about 4 or 5 years, leaves can reach 12 to 18 inches wide.
 
If your monstera is pushing out leaves that are larger than your hand, you know it’s no longer a juvenile.
 

Fenestrations Are the Ultimate Age Indicator

Fenestrations are the iconic holes and splits in monstera leaves, and they’re the single best way to tell age of monstera.
 
Juvenile monsteras have solid heart-shaped leaves without any holes or slits at all.
 
Those famous fenestrations only start appearing once the plant reaches a certain maturity, usually around 2 to 3 years old.
 
So if your monstera has zero fenestrations, it’s almost certainly younger than 3 years.
 

1. Few Holes Mean Early Adulthood

When fenestrations first begin, you’ll see just a couple of shallow slits near the edges of the leaves.
 
This usually happens when the monstera is around 2 to 3 years old, and it’s such an exciting milestone for plant parents.
 
The first leaves with fenestrations often look a bit awkward, with just one or two splits on one side.
 

2. Deep Splits and Multiple Holes Indicate Older Plants

As the monstera ages, the fenestrations become more dramatic and numerous.
 
By year 4 or 5, you’ll see deep splits that go almost all the way to the leaf’s center vein, plus multiple oval holes scattered throughout.
 
A monstera that’s 7 years or older will have leaves that look like works of art, with intricate patterns of holes and slits covering most of the surface.
 
The more fenestrations you see, the older the plant is, plain and simple.
 

Height and Stem Thickness Help You Tell Age of Monstera

Beyond leaves and fenestrations, the physical structure of the plant gives you solid answers when you try to tell age of monstera.
 
Height is an obvious metric, but stem thickness is even more telling because it reflects the plant’s cumulative growth.
 

1. Height Milestones by Year

A one-year-old monstera usually stands about 1 to 2 feet tall, including the pot.
 
By year three, you can expect 3 to 4 feet of vertical growth, and mature monsteras often reach 6 feet or more indoors.
 
Remember that climbing monsteras grow taller faster if they have a moss pole or trellis to grab onto.
 

2. Stem Thickness as a Trusted Aging Sign

Older monsteras develop thick, woody stems that feel firm and almost bark-like near the base.
 
If the stems are thin and soft, under a quarter-inch in diameter, the plant is likely under 2 years old.
 
A monstera with stems that are half an inch thick or more has been growing for several years at least.
 
You can also check the aerial roots; longer, tougher aerial roots often appear on plants that are 4 years or older.
 

Aerial Roots and Overall Growth Patterns

When you’re trying to tell age of monstera, don’t ignore the roots that dangle out of the pot or cling to the soil.
 
Juvenile monsteras have short, thin aerial roots that are barely noticeable.
 
As the plant matures, these roots grow longer and thicker, sometimes reaching several feet in length.
 
Older monsteras also produce more of these roots, and they’ll often start wrapping around the pot or trying to attach to nearby surfaces.
 

1. Growth Rate Slows With Age

Young monsteras grow rapidly, especially in the first 2 years, often putting out a new leaf every month during spring and summer.
 
Once a monstera reaches 5 to 6 years old, growth slows down noticeably.
 
If your plant is only producing 2 or 3 leaves per year, it’s likely a mature specimen rather than a spring chicken.
 

2. Pot Bound Roots Reveal Age

Carefully slip your monstera out of its pot and inspect the root ball.
 
A young plant will have loose, well-spaced roots that haven’t filled the container yet.
 
An older monstera will have roots tightly packed, circling the bottom, and sometimes even pushing out of the drainage holes.
 
Being root-bound isn’t healthy long-term, but it’s a strong indicator that your plant has been growing for years.
 

So, How to Tell Age of Monstera?

You can tell age of monstera by combining all the clues we just covered.
 
Start by counting the leaves, then check for fenestrations, measure the height, and feel the stem thickness.
 
A monstera with fewer than 6 solid leaves is under 1 year old, while one with 15 leaves and deep fenestrations is probably around 4 or 5 years.
 
A plant with thick stems, long aerial roots, and slow growth is likely a mature specimen over 6 years old.
 
There’s no exact science to tell age of monstera, but these methods give you a great estimate for your plant’s birthday.
 
So grab your monstera, examine its leaves, stems, and roots, and you’ll have a solid answer in just a few minutes.
 
Happy plant parenting, and enjoy watching your monstera continue to age beautifully for years to come.