Cultivation Techniques of Potted Osmanthus
This article brings you knowledge about home gardening, specifically the cultivation techniques of potted osmanthus, as follows:
Osmanthus Varieties
1. Silver Osmanthus, flowers are yellowish white or light yellow, varieties include "Pure Silver Osmanthus" and "Qingshan Silver Osmanthus."
2. Golden Osmanthus, flowers are yellow (welcome spring yellow, corn yellow, carmine yellow). Varieties include Round-Leaf Golden Osmanthus, Huangchuan Golden Osmanthus, Xianning Late Osmanthus,球形 Osmanthus, and Willow-Leaf Su Osmanthus.
3. Red Osmanthus, flowers range from orange, tangerine red, to light orange, varieties include "Cinnabar Red Osmanthus," "Large-Leaf Red Osmanthus," and "Small-Leaf Red Osmanthus."
4. Four-Season Osmanthus, plants are shorter with more suckers, the fragrance is not as strong as Silver, Golden, or Red Osmanthus, blooms several times or continuously throughout the year, flowers are lemon yellow or light yellow, varieties include Large-Leaf Four-Season Osmanthus and Small-Leaf Four-Season Osmanthus.
Habits of Osmanthus, it prefers strong light, warm conditions, can tolerate high temperatures, not cold-resistant, prefers a well-ventilated environment, suitable for moist and well-drained sandy loam soil, likes fertilizer, has a strong tree vigor, high resistance to chlorine gas, and can live for over a thousand years with proper management.
Propagation
1. Cutting, before the spring sprouts, use one-year-old branches that are fully developed, cut into 5 cm to 10 cm long sections, keep 2 to 3 leaves at the top, insert them into river sand or loess beds, cover with shade, or in the summer when new shoot growth stops, cut the current year's green branches and use the same method for cutting.
2. High-pressure, in the spring, select an appropriate thick branch from the mother tree, cut to the radius depth from its lower side, bend the branch towards the opposite side, causing the cut to crack open to a length of 6 cm to 9 cm, then put the cracked part into a pottery jar, fill with soil, and hang the jar in the middle of the branch or use plastic film instead of the jar, water frequently during the rooting process to keep the soil moist, after the roots develop in autumn, cut it from the mother tree for propagation.
3. Grafting, use ligustrum or small-leaf ligustrum as the rootstock, use the cut grafting method before the spring sprouts, cut the rootstock close to the base for easier survival, and after survival, the scion may root, ensuring a high survival rate of grafting and faster growth after survival, in the cold north, use Koelreuteria paniculata as the rootstock, which enhances cold resistance and doubles growth speed.
Cultivation should be done in a sunny, well-drained area with deep topsoil, apply base fertilizer, manure, or wood ash at planting, plant large seedlings with soil balls carefully, for potted plants, apply base fertilizer at the bottom of the pot, plant the seedlings with soil balls carefully, potting can be done throughout the year, but early spring (February) and early winter (October to November) are best. After survival, large trees grow branches once a year, small potted trees grow branches 2 to 3 times a year, apply a quick-acting nitrogen fertilizer once a year before branching or flowering, especially one month before flowering, water thoroughly, after flowering and before winter, apply an organic fertilizer (such as peanut cake, bone meal) as the base fertilizer for the following year, then apply a quick-acting nitrogen fertilizer once in March every year, a phosphorus and potassium fertilizer in May and July, and a slow-release fertilizer in October.
Osmanthus has few diseases and pests, common ones include刺娥, 布袋虫, and 卷叶娥, which are leaf-eating pests, spray emulsion dichlorvos and floral nutrient solution diluted 3000 times in April every year, and spray dimethoate plus floral nutrient solution diluted 300 times in July to August, prevention is better than cure, even if no pests are found, spray pesticides in April, July, and August. If pests are found, spray continuously for three times, with a 3-day interval between each spray.
The above[] introduces the complete cultivation techniques of potted osmanthus, for everyone's learning and reference!