Ceanothus griseus var. horizontalis 'MATCEA01'
Due to pruning the plants in late June, the reference month for beginning the relative plant growth index calculation for this cultivar is July (Figure 16b). At the end of the deficit season, the Low treatment had the largest relative plant growth index though this was not statistically significant, showing that regular summer water is not critical for this plant’s growth or health in a shade or part shade situation. Aesthetically the treatments were comparable for the Overall Appearance, Foliage and Vigor ratings (Table 22a). There was a slight decline (from very good to good) in average overall appearance on the Low water treatment beginning in September, but this rating was impacted by two individuals that died in the following month. Since the Low treatment in the shade house was not irrigated over the entire season, this could be the cause of death of these two plants, though the surviving individuals on this treatment were rated between 3 and 5. Despite the mortality on the treatment, trials staff recommend irrigating Highlights™ at the Low level, though providing one irrigation in the late spring and/or mid/late summer could prevent the kind of stress in inland areas that leads to mortality of weaker individual plants.
*Plant width is final 2nd year width after pruning in late June to 1m-wide circle. A much larger width would undoubtedly have been attained without pruning.
|Submitted by:||Sunset Western Garden Collection|
|Trial Exposure:||50% Shade|
Height & Width
(after 2 years):
3' x 10' - UC Davis
Reported Height & Width
|2-3' x 5-6'|
|WUCOLS plant type:||Gc S N|
|Water Needs & WUCOLS Zone:||Low - Region 2|
(1-5 Scale, 5 is highest)
|3.8 - UC Davis|
|March-May - UC Davis|