Nandina domestica 'ZHNAN28'
Nandina domestica Cool Glow™ Peach on low water in June 2022. Photo: SK Reid.
Summary
South Coast Research & Extension Center (South Coast REC/SCREC) is located in Irvine California, this site has a sandy loam soil and plants are irrigated with reclaimed water. UC Davis is located in Davis, California, this site has a silty clay loam soil and plants are irrigated with potable water. More information about the field sites is located in the Nuts & Bolts section.
For Cool Glow Peach we observed statistically significant differences between all three treatments for overall appearance ratings, with the mean rating for the 20% treatment falling below our acceptable appearance threshold of 3. When the foliage ratings were analyzed we found both the 80% and 50% treatments were significantly better than the 20% treatment. As a result we would recommend Nandina Cool Glow Peach be irrigated on WUCOLS Moderate level in Region 2 to achieve good aesthetic performance.
The Cool Glow Peach heavenly bamboo did not perform well from the start in Davis in our full sun trial. From the data collected throughout the season, we do not recommend this cultivar for use in our region in full sun (Table 12a). It showed signs of sunburn and dieback to such an extent that no significant increase in size was seen between June and October on any treatment and the low treatment showed significant dieback (Figure 5a-5b). We are subsequently evaluating it in 50% shade for the 2022 irrigation treatment season.
At the cooler South Coast REC site, Cool Glow Peach did attain an acceptable overall appearance rating on the moderate irrigation treatment with significantly better performance than either the high or low treatment (Table 12b). There was also significantly more growth on the moderate treatment with mortality rates of 57% and 25% on the high and low irrigation levels, respectively. For these reasons, in this region we suggest this plant be placed where it will receive afternoon shade and, when using reclaimed water, irrigated at the moderate level.
Nandina 'Zhnan28' on moderate water in October 2021.
Basic Info
| Submitted by: | Bailey Nurseries |
| Site(s): | UC Davis & SCREC |
| Trial Exposure: | Sun & 50% Shade |
| Year evaluated: | 2021: Sun @ SCREC & UC Davis 2022: 50% Shade @ UC Davis |
| Height & Width after 2 years: | 12.1' x 0.9' - UC Davis (Sun) 1.5' x 1.1' - SCREC (Sun) 1.5' x 1.5' UC Davis (50% Shade) |
| Reported Height & Width at maturity: | 3-4' x 3-4' |
| WUCOLS plant type: | P |
| Water Needs & WUCOLS Region: | Region 2 - Moderate (50% Shade) Region 2 - Not Reccomended (Sun) Region 3 - M (Sun) |
Mean Overall Appearance rating: (1-5 Scale, 5 is highest) | 3.5 - UC Davis (50% Shade) 2.5 - UC Davis (Sun) 3.3 - SCREC (Sun) |
| Flowering Months: | July-October - UC Davis (Sun) N/A - SCREC June - UC Davis (50% Shade) |
Growth and Quality Data
Click Here for Complete Data Set - Sun (UC Davis & SCREC)
Click Here for Complete Data Set - 50% Shade (UC Davis)
Nandina domestica Cool Glow™ Peach on low water in October 2022. Photo: JA Sisneroz.