How to Grow Moonbeam Coreopsis

Threadleaf coreopsis, or Coreopsis verticillata, charms many gardeners with its cheery, daisy-like flowers and slender, silvery-green foliage. Several cultivars of the species have been developed, including a variety with pale, whitish-yellow flowers called Moonbeam. Coreopsis 'Moonbeam' grows easily from divisions and will establish a healthy new root system in just a few months, but unlike other coreopsis varieties, it will not self-seed and take over the garden since the seeds it produces are sterile and will not reliably sprout.

8-inch plastic pots
Loam
Coarse sand
Garden trowel

Instructions

- 1
  Prepare a pot for the division before gathering it. Fill an 8-inch plastic pot half-full with a mixture of three parts loam and one part coarse sand.
- 2
  Mark out a 2-by- 2-inch portion near the edge of an established plant. Dig down three inches around the portion using a garden trowel.
- 3
  Work the blade of the garden trowel under the division. Pry it up and sever any roots or rhizomes still connecting the division to the parent plant.
- 4
  Set the division on the soil in the pot. Fill in around the roots with more of the soil mixture created in Step 1. Firm the soil well around the roots.
- 5
  Water the division with 1/4 cup of water to settle the soil. Apply 1/4 cup of water to the soil whenever the top inch or so feels dry. Avoid making the soil overly wet at any time.
- 6
  Set the potted division in a greenhouse, cold frame or in another warm, sheltered spot with bright light. Grow the division under those conditions until it establishes a healthy root system and puts on new growth.
- 7
  Transplant the Coreopsis 'Moonbeam' into a permanent bed once it has doubled in size. Select a planting site with the same soil, light and moisture conditions as the parent plant.

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