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RHODODENDRONS

SELECTION
SITING
PLANTING
WATERING
WEEDING
MULCHING
FEEDING
PRUNING
WINTER PROTECTION
DECIDUOUS AZALEAS

 

 

Newfane Greenhouse and Nursery
Newfane Greenhouse >> Care & Maintenance >> Rhododendrons

RHODODENDRON, AZALEA & MOUNTAIN LAUREL

Newfane Greenhouse SELECTION
Rhododendrons, azaleas & mountain laurel are broadleaf evergreens prized as ornamental shrubs the world over. Varieties we carry are all hardy in our area, so selection depends mainly upon size & color choice. Bloom times vary from spring to early summer. Also consider the overall mature size, growth rate, and leaf & bloom size. Read the tag on the plant or ask our staff for assistance if you're unsure of which variety is best for you.

SITING
Most broadleaf evergreens prefer a protected site in part shade with rich, humusy, acid soil. Adequate moisture and good drainage are essential. Most soil in our area is acidic, but use a pH tester if you're unsure.

PLANTING
As with other shrubs, dig a hole about twice the width of the container, and not much deeper. Plant the shrub at the same depth as it was in its container, and loosen any compacted roots. Backfill with soil amended with up to 1/2 peat moss or peat humus, or use Complete Planting Mix. Water in well with a long, slow trickle, rather than flooding. Maintain moist soil for 2 weeks after planting.

WATERING
Water is the key to good growth. During rainy periods, natural moisture is usually sufficient. Plant roots should be moist, but not waterlogged. In the absence of natural rainfall, water is especially important during the following periods of greatest need :

  • Immediately after planting
  • After flowering during summer when new leaves & buds are forming
  • In fall prior to winter dormancy
  • Any period of a week to 10 days with out at least 1" of rain
WEEDING
Weeds not only compete for moisture & nutrients, but also block out sunlight and reduce air circulation. Be careful weeding close to rhododendrons, azaleas & mountain laurel; their fibrous root systems lie just beneath the surface and can easily be damaged by cultivation. Hand weeding is best.

MULCHING
Mulch keeps the soil moist and weeds out. 2-3" of bark mulch works well. Avoid mounding mulch up around trunk of shrub. A donut configuration works well.

FEEDING
Most azaleas, rhododendrons & mountain laurel prefer a food for acid loving shrubs. We recommend Espoma Holly Tone or Miracid. Follow the directions on the package for frequency of feeding, but avoid feeding past mid-August. Tender new growth is more prone to winter kill.

PRUNING
Prune for shape or healthy structure immediately after flowering. Pruning later in the season can remove bud set for the following year. Use a sharp pruner and cut above a rosette of leaves. To encourage rhododendrons to branch sideways and form a more dense plant, freely pinch out terminal vegetative buds. This is most important on younger, non flowering plants. Most ungainly rhododendrons can be rejuvenated to an improved form by heavy pruning done in stages over a period of 2-3 years.

WINTER PROTECTION
We recommend spraying with Wilt-Pruf around the time of hard frost ( usually around Thanksgiving ). This helps keep the leaves from drying out, & prevents winter burn. Be sure to spray when it's 40 degrees or above.

DECIDUOUS AZALEAS
Deciduous azaleas, unlike evergreen azaleas lose their leaves in fall. The flowers which occur in a wider range of colors than the evergreens, emerge in spring before the leaves. In general deciduous azaleas can be sited in more sun than evergreen azaleas. Otherwise, care is the same, except that winter protection of the leaves is not necessary.

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Newfane Greenhouse & Nursery, Inc.

391 Rt 30, Route 30, Newfane, VT 05345
Tel: 802-365-4408 - Fax: 802-365-7002 - Email: jwilson@sover.net

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