Is Preen Safe for Flower Bulbs?

Preen

• Preen manufactures and sells a line of gardening products that includes mulch, weed killer, weed preventer and landscape fabric. The company also manufactures organic weed preventers for gardeners who want to avoid synthetics in their garden.

Planting with Preen

• Gardeners should always plant their flower bulbs in certain condition, including quick-draining soil, organic compost and mulch to keep the soil loose, nutritious and warm. Preen Mulch Plus combines mulch with weed killer to keep the soil around flower bulbs warm while discouraging weed growth, and is a safe and effective addition to a flower bed.

Preen Weed Preventer

• Preen Weed Preventer also works to prevent weed growth, but is a liquid rather than a mulch. The company advertises that Weed Preventer restricts weed growth for up to six months, and is safe for use in all flower beds.

Instructions

• Gardeners can spread Preen Mulch around their planting site immediately after planting without damaging flower bulbs, but should use Weed Preventer or herbicide only after the flower buds sprout and begin to grow. When using herbicides, it's important that gardeners apply the liquid to the ground and weeds, rather than to the foliage of their flowers.