Trade Show Opportunity

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2010 Perennial Plant Symposium
Save the date for the 2010 Perennial Plant Symposium. It will be held July 18-24 in Portland, Oregon at the Double Tree... click for details
2009 Perennial Plant Symposium Video

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Portland Symposium
Preview the Portland, Oregon Great Northwest Symposium July 18-24, 2010.  Take the opportunity to tour famous gardens... click for details
Plant Tips
  • June is a perfect month to plant new perennials that will flower in June and beyond into summer and fall. At one time gardeners did most or even all of their perennial planting in the early spring season. Summer environmental conditions were considered too harsh for new plantings. This is not true any more! The use of plastic containers presently sold in the garden center allows plants to be easily acclimated to their new surroundings, as opposed to the past practices of marketing perennials either bare-root or field-dug.

  • Perennials planted in June or later in the summer will require initial care. The garden area should be well-amended with humus or other organic matter so that moisture retention is enhanced. Newly established beds should receive 4 inches of organic matter per 12 inches of soil profile to ensure good drainage and optimal root growth. Irrigation is usually necessary to assist in the summertime establishment of perennials. Also, one very deep watering per week is more advantageous than numerous shallow waterings. Following planting remember to mulch. This practice helps retain moisture, retards weed growth, and looks great. Shredded hardwood, pine bark, or even compost may be used. Do not apply more than 2 inches of mulch and keep the mulch away from the crown of the plant to avoid rot. These practices will help the perennials beat the heat!
Perennial Plant of the Year - How Is It Chosen?

From time to time we receive the question, "How is the Perennial Plant of the Year selected?" The selection process is quite simple – PPA members vote for the POY. In addition to their vote, each member nominates plants for future consideration. The Perennial Plant of...

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