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Spring Dwarf

FAST FACTS - SPRING DWARF
by Nanette Londeree, Master Rosarian

SIGNS

  • No discernable signs

    SYMPTOMS

  • Emerging leaves in spring are balled or curved on very short shoots with conspicuous and extensive vein-clearing
  • Shoot tips becomes severely rosette
  • Plant growth is slow
  • Symptoms disappear later in season

    Spring Dwarf CAUSE

  • The causal agent (or agents) is unknown, possibly a virus

    OPTIMAL CONDITIONS

  • Transmission is by bud-grafting
  • No natural spread has been observed

    TREATMENT

    Prevention:

  • Because spread is almost exclusively during budding and grafting operations, control of this disease rests primarily with the nursery and commercial rose grower
  • Purchase high-quality, certified, virus-free or resistant nursery stock from reputable, reliable sources

    Elimination:

  • No known treatment
  • If plants demonstrate symptoms, provide proper cultural care to improve plant vigor or replace infected plants if their growth is unsatisfactory

    GOOD GUY / BAD GUY?

  • Moderately bad guy; if symptoms disappear later in the season and plant recovers, then itís a short term bad guy
  • If the plant does not recover, itís an obvious really bad guy

  • Photos of Spring Dwarf are by Baldo Villegas from the extraordinary website: http://members.tripod.com/buggyrose/irosepests.htm


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    Last Modified: 08/06/2013