---
title: particleScaleSpeed
framework: spritekit
role: symbol
role_heading: Instance Property
path: spritekit/skemitternode/particlescalespeed
---

# particleScaleSpeed

The rate at which a particle’s scale factor changes per second.

## Declaration

```swift
var particleScaleSpeed: CGFloat { get set }
```

## Discussion

Discussion The default value is 0.0.

## See Also

### Scaling Particles by a Factor

- [particleScale](spritekit/skemitternode/particlescale.md)
- [particleScaleRange](spritekit/skemitternode/particlescalerange.md)
- [particleScaleSequence](spritekit/skemitternode/particlescalesequence.md)