Can the fruit grafted with plum trees be eaten?

The fruit of purple leaf plum is purple, bare and very beautiful. The fruit is also rich in sugar, trace protein, carotene, nicotinic acid, calcium, iron, phosphorus, asparagine, glutamine, threonine, alanine, proline, glycine, serine, vitamin C, vitamin b 1, vitamin b2, fat and so on. Has the functions of invigorating middle warmer, relaxing bowels, quenching thirst, nourishing yin and promoting fluid production. It is especially suitable for patients with palpitation, shortness of breath, amenorrhea, constipation, blood stasis, swelling and pain, sallow and emaciated.