[header] How to plant sycamore tree seeds [title] Plant the seeds in a shallow tray. [step] Sycamore seeds grow best when you start them in a tray and then transfer them to a pot. Choose a shallow growing tray, but one that's deep enough to let the seed take root. 
The plant will grow to about 4 inches (10 cm) in the first 2 months. [title] Bury the seeds about 0.125 inches (0.32 cm) deep.