Big Blue Liriope Plant

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The Big Blue Liriope Grass Will Steal the Show in Your Garden

The Big Blue Liriope plant, or Liriope muscari 'Big Blue', is a beautiful yet hardy perennial plant that will add interest to any space.

The ornamental grass boasts dark, glossy foliage that arches out from the center of the plant and produces a stalk with dainty purple-blue flowers that form berries. The flowers bloom in late summer, and the berries appear in fall. Be advised that these berries aren’t for snacking and are believed to be poisonous.

Each plant grows 1-2 feet in height and width, and their aggressive growth habits allow them to easily spread and fill up a flower bed if you let them. Liriope Big Blue is ideal for rock gardens or the edges of a flower bed, but you can also let them grow as they wish and use them as a ground cover. 

Big Blue Liriope Care 

Big Blue Liriope grass is ideal for USDA hardiness zones 5-10. It will need winter protection in zones 5 and 6, but the warmer zones won’t require as much extra attention when the temperatures drop.

This variation of Liriope enjoys full sun in cool climates and afternoon shade in warm climates. Leaves may burn if they’re exposed to extreme temperatures for several hours.

The plant can tolerate full shade but won’t grow to its full potential in these conditions. You’ll likely see elongated leaves and slow growth.

Liriope needs well-draining soil since they don’t like wet feet. They prefer slightly acidic or neutral soil with a pH of 6.0-7.0.

They’re light feeders and won’t require much fertilizer. You can apply slow-release fertilizer or a thick layer of compost in the spring, and it should be enough to keep your Liriopes happy all year long.

When to Plant Big Blue Liriope

The best time to plant liriope is in early spring! This will give the plants the entire growing season to establish. Big blue liriope spacing should be every foot apart.

Overall, the Liriope Big Blue is easy to care for once it’s established in your garden. New plants will need extra TLC to keep the soil moist, but after one year, this plant will become more drought-tolerant, and you can spend more time appreciating it and less time hovering over it.

Big Blue Liriope likes consistently moist soil, but it’s a drought-tolerant plant that can adapt to drier conditions if necessary. Be sure young plants or new transplants get plenty of water during the first year in their new location because they’re a little pickier about how much water they receive since they’re working on growing a robust root system.

The soil should be moist but not wet. If it looks dry, it’s time for a drink. If you live in an area that receives frequent rain, you may not need to give established plants supplemental water.

Big Blue Liriope Pruning Requirements

Pruning your Liriope will encourage new growth and keep your plants looking tidy. You can prune off the tops of the flower stalks in late winter or early spring before new growth pops up. You can also entirely cut back the plants by mowing over them with a lawn mower set to the highest setting. This will encourage new foliage growth. You don’t need to prune throughout the year unless you want to remove certain plant parts.  

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