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Scion Collection: Scions should be collected from the middle to upper parts of the canopy of healthy, vigorous mother trees that are of high-quality planting species. The selected shoots should be full, robust, and have a smooth tip surface. Leaves must be green, glossy, and free from pests. Grafting can also be done on selected grafted seedlings or young saplings. The scions must be fully matured, with new growth cut when it is not yet in the active growth phase. After cutting, leaves should be removed immediately (leaving the petioles intact). Bundle 50–100 pieces together, wrap them in a damp cloth, label them with the species name, and prepare for grafting. If scions show signs of mites or other pests, they should be washed in a 1% soap solution or a 500-times diluted neutral detergent.
Scion Storage: Scions are typically used immediately after collection, unless special conditions require storage. The key to successful storage is maintaining moisture. Common materials used for this include clean river sand (with a moisture content of 5–10%, which feels slightly moist but doesn’t clump), or moist and clean moss (such as stone flower). The ideal storage temperature is between 4°C and 13°C. With proper humidity, the grafting survival rate can remain high for several weeks.
Scion Transportation: When transportation is necessary, clearly indicate the species, tree number, bundling method, moisture level, and ensure quick delivery. The quantity of scions will vary depending on the transport method. For small quantities, wrap them in a wet towel or wet stone and place them in a plastic bag with ventilation holes. For larger quantities, use containers like bamboo poles or wooden boxes lined with moisture-retaining materials such as wet moss. Layer the scions with moist materials, cover the top with more moss, and seal the container with a plastic film. Ensure consistent moisture and good air circulation during transit. If the journey is long or the temperature is high, first rinse the scions with clean water, then soak them in a sodium hypochlorite solution (or bleach) with an effective chlorine concentration of about 0.5% for 5–10 minutes. Rinse thoroughly, pat dry with absorbent paper, and place them in a polyethylene bag. Remove as much air as possible, seal the bag, and then place another plastic bag over it for extra protection. You can also add a layer of moisture-retaining material between the two bags to prevent drying. Avoid direct contact between the scions and the moist materials to prevent rotting due to excessive humidity. To avoid damage from pressure or extreme temperatures, store the packed scions in cardboard boxes and check every 2–3 days. If the petioles were removed, make sure to open the bag and remove any excess moisture caused by condensation. Use absorbent paper to wipe away any water and reseal the bag. This method allows the scions to stay viable even at high temperatures up to 37°C for up to 20 days without significantly affecting the grafting survival rate.