Several reasons why the leaf edges and tips of home-grown Dafugui orchids keep turning yellow

1. Leaves tinged yellow: growth is normal, it is due to too strong light; 2. Leaves turn yellow, new shoots are rather small: excessive light, lacking nitrogen fertilizer and necessary humidity. 3. Old leaves yellow and fall off: normal aging, normal shedding of old growth, or caused by repotting; 4. Old leaves yellow and fall off rapidly: overwatering, watering too frequently, or improper potting when repotting. 5. New leaf tips scorched: excessive fertilizing, or the potting material and water quality are not clean. 6. Both new leaves and old plants have scorched black tips: excessive damp heat in the pot, and root rot has already occurred in the root system. 7. New shoots stop growing after emerging: there is root rot or unclean matter beside the new shoot, the old plant does not supply enough nutrients, or the new shoot's water roots suffer fertilizer damage; open the potting material around the new shoot, remove the unclean matter, and use fine potting material to induce roots and help it resume growth: 8. There are scorch spots on the leaves with no yellow around the edges: sunburn spots. 9. Leaf tips appear scalded and shrunken: the water temperature for watering is too high, or the air temperature is too high when watering; being rained on during high summer temperatures, etc. 10. If new leaves turn yellow: it may be that the roots have a problem or the environment is not well ventilated.