Reining in Roving Grasses

Clump-forming grasses stay put in neat bunches. On the other hand, running grasses -- such as banner grasses, European dune grass, giant reed, prairie cord grass, ribbon grass, and basket grass -- are invasive and need control in small or formal beds. Here's how keep roving grasses in check.

1. Prevention is the best tactic for a would-be roving grass. Simply give it close quarters at planting time. Start with a spade, scissors, and a plastic two-gallon nursery container.

2. Dig a hole that is large enough to accommodate the two-gallon pot with its rim situated at soil level. Water the planting spot. Then, cut away the pot bottom and position the pot in the hole.

3. Plant the grass in the bottomless pot (no deeper than the plant was situated in its original container), then firm soil in and around the pot and grass. Water the newly planted grass deeply.

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