This study included one factor with four growth retardant application methods of daminozide at 500 mg.l -1 concentration (without addition, sapling base soaking, drench, and spraying methods) on oleander sapling four months age. The experiment was conducted in a lath-house, Department of Horticulture and Landscaping, College of Agriculture, Tikrit University, during the growing season of 2016. The experiment was designed in a complete randomized design with three replications. The results showed that daminozide applications caused a significant effect in growth characteristics. Drench application gave less plant height 62.87 cm. Spray application resulted in the highest chlorophyll content (10.61 mg.g -1 fresh weight). Highest content of oleandrin was 0.25 mg.g -1 and 47.82 mg.kg -1 of rutin to sapling base soaking treatment.

The current study was conducted in the greenhouse at the department of Horticulture and Gardens Engineering / College of Agriculture and Forestry / University of Mosul for the period from October 1st 2021 until June 10th 2022 on the series Hot Cakes of Matthiola incana L. The experiment was conducted using split-plot systems with a random complete block design. The planting factor was put in the main boards, which included the uncovered and covered planting. The factor of planting date was put in the secondary boards, which included three senga gnitnalp, namely 1/10, 15/10 and 1/11. The results show that the plants that were planted using the uncovered planting system gave the highest values in terms of the leaf area (169 cm2) and the number of flowerets (54.64) floweret. As for the covered planting, it was convenient to increase the diameter of the first floweret (33.54 mm) and the height of the plant (28.62 cm). it was also observed that in the late period of planting, which was on 1/11/2021, the leaf area improved (181.34 cm2) and leaf area (170 cm2plant−1).