It’s easy to plant trees and shrubs too close together—especially when they’re small.
But spacing matters. Giving plants enough room from the start leads to healthier growth and a better-looking landscape over time.
🌱 Think About Mature Size
Plants are often sold small, but they won’t stay that way.
- Check the mature width of the plant
- Space based on how wide it will grow—not how it looks today
Planting too close can lead to crowding, poor air flow, and uneven growth.
📏 General Spacing Guidelines
A simple rule:
- Space plants about as far apart as their expected mature width
Examples:
- A shrub that grows 6 feet wide → space about 6 feet apart
- A tree with a 20-foot canopy → allow about 20 feet of space
For a fuller look, you can plant slightly closer—but expect some overlap over time.
🌿 Spacing From Buildings and Structures
Don’t forget to leave room around:
- Houses and foundations
- Fences
- Walkways and driveways
Plants placed too close can outgrow their space and require pruning or removal later.
🌬️ Allow for Airflow
Proper spacing helps:
- Reduce disease issues
- Improve plant health
- Maintain natural shape
Crowded plants compete for light, water, and space.
🌱 What Happens If Plants Are Too Close?
- Growth may become uneven or stretched
- Plants may need frequent pruning
- Some may decline over time due to crowding
This often shows up a few years after planting.
🌿 Planning Tips
- It’s okay if things look a little spaced out at first
- You can use mulch or temporary plants to fill gaps
- Think long-term—your landscape will grow into the space
🌿 Spacing for Hedges vs Natural Growth
Spacing depends on what you want your plants to do.
🌱 Natural Spacing (Individual Plants)
If you want each plant to grow to its natural shape:
- Space plants based on their full mature width
- This allows proper airflow and full development
This works best for:
- Feature shrubs
- Trees
- Natural-looking landscapes
🌿 Hedge or Privacy Planting
If your goal is a screen, hedge, or privacy row:
- You can plant closer than mature width
- This encourages plants to grow together into a continuous row
A common approach:
- Space plants at ½ to ¾ of their mature width
Example:
- A shrub that grows 8 feet wide → space 4–6 feet apart for a hedge
This creates a fuller look sooner.
🌸 Plants That Naturally Spread (Like Lilacs)
Some plants expand over time by sending up new shoots from the base.
Examples include:
- Lilacs
- Some types of dogwood
- Certain suckering shrubs
These plants will:
- Gradually form wider clumps
- Fill in space naturally over time
- Create a more informal, natural hedge
Because of this:
- You can space them a bit wider if you’re patient
- Or plant closer for a faster privacy effect
🌿 Using Lilacs for Privacy
Lilacs can make an excellent informal hedge or screen.
- For a looser, natural look: space farther apart and allow them to spread
- For a denser hedge: plant closer together and let them grow into each other
Keep in mind:
- Lilacs won’t form a tight, formal hedge
- They create a seasonal screen (full in leaf, more open in winter)
🌿 Final Thought
There’s no single “correct” spacing—it depends on your goal. Give your plants the space they need now, and they’ll reward you with healthier growth and a more natural look over time.
- Wider spacing = natural shape and less maintenance
- Closer spacing = faster coverage and fuller appearance
Plan for how you want the space to look in a few years, not just how it looks today. A little patience early on leads to better results later.