Alstroemeria Care: Deadheading vs. Letting Seed Pods Develop

To Deadhead or Not?

You can let seed pods form, but alstroemeria spreads primarily through root expansion, not seeds.

Growth Habit

• Forms dense clumps from tuberous roots.
• In partial shade with moist soil, it can become invasive.
• Deadheading redirects energy to root growth, potentially increasing spread.

Recommendation

If you want to contain it, deadhead and install root barriers. If you want a large colony, let it go—but monitor boundaries.