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What are the propagation methods for southern magnolia? A detailed guide

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The propagation of southern magnolia mainly involves two methods: sowing and grafting. (1) Seed propagation 1. Harvesting and seed storage The fruit of southern magnolia ripens in September-October. When ripe, the fruit splits open, revealing the red aril. It should be harvested promptly when the fruit is slightly cracked and the aril has just turned reddish-yellow. After harvesting, place the fruit in a shaded area to dry for 5-6 days to encourage splitting. Remove the seeds with the aril, soak them in clean water for 1-2 days, rub off the aril and remove the shriveled seeds. Alternatively, mix with plant ash and rub to remove the aril. Mix the clean white seeds with

The propagation of southern magnolia mainly involves two methods: sowing and grafting.

(1) Seed propagation

1. Harvesting and seed storage The fruit of southern magnolia ripens in September-October. When ripe, the fruit splits open, revealing the red aril. It should be harvested promptly when the fruit is slightly cracked and the aril has just turned reddish-yellow. After harvesting, place the fruit in a shaded area to dry for 5-6 days to encourage splitting. Remove the seeds with the aril, soak them in clean water for 1-2 days, rub off the aril and remove the shriveled seeds. Alternatively, mix with plant ash and rub to remove the aril. Mix the clean white seeds with kerosene or zinc phosphide to prevent rodent damage.

2. Sowing There are two sowing periods: sow immediately after harvest (autumn sowing) and spring sowing. The seedbed should be a fertile, loose sandy soil, deep-plowed with weeds and pests eliminated, and sufficient base fertilizer applied. After leveling the bed surface, open sowing furrows 5 cm deep, 5 cm wide, with a row spacing of about 20 cm. Sow in rows, distributing the seeds evenly in the furrows, cover with soil and press lightly.

3. Seedling management after sowing When the seedlings have 2 to 3 true leaves, they can be transplanted with soil. Since growth is slow during the seedling stage, regular weeding and loosening of the soil are necessary. From May to July, apply top dressing 3 times, using fully decomposed dilute manure water.

(2) Grafting propagation

For grafting, Magnolia (Mulan, Xinyi) is commonly used as the rootstock. The Magnolia rootstock is propagated by cuttings or sowing. When its trunk diameter reaches about 0.5 cm, it can be used as rootstock. In March to April, take healthy branches of southern magnolia with terminal buds as scions. The scions should be 5 to 7 cm long, with 1 to 2 axillary buds, and the leaves removed. Use the cut grafting method to graft at 3 to 5 cm above the ground on the rootstock. After grafting, mound soil around it, leaving the top of the scion slightly exposed, to promote wound healing. The side grafting method can also be used, with the graft union about 5 to 10 cm above the ground. In some areas, Magnolia amoena, Magnolia convexa, and others are used as rootstock; the grafted seedlings grow faster and the results are more ideal.

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