Articles
GROWTH CONTROL OF CANARY ISLANDS NATIVE SHRUB SPECIES FOR POTTED PLANT USE
Since 1988 the C.I.T.A. has been involved in a project to screen native species which could be developed as potted plants.
In its current phase, it deals with several shrubby species locally used in landscaping or gardening.
Daminozide as spray; Chlormequat, Ancymidol and Paclobutrazol, as spray or drench (all at 2 concentration levels), were applied to pinched plants of Cheirolophus arbutifolius, Isoplexis canariensis, Nauplius sericeus and Salvia canariensis.
Although C. arbutifolius could be reduced in size by Daminozide sprays or Paclobutrazol drenches, the plants failed to flower.
Daminozide was ineffective and phytotoxic for I. canariensis, but Chlormequat sprays and Ancymidol or Paclobutrazol drenches successfully reduced plant size.
Chlormequat sprays and Paclobutrazol drenches were the most suitable treatments for N. sericeus. A significant reduction in plant height of S. canariensis could be achieved by Ancymidol or Paclobutrazol drenching; however, only some treated plants flowered as did the controls.