Move your tree outside for a few hours each day, gradually increasing the amount.

I suspect that is not enough water for your tree in your climate. I'm in the Santa Clara Valley, not far from you, and I water my container citrus quite a lot more than that. I've been watering them with probably a half a gallon (32 oz) every 3 days, and more when the temps go over 90F. Citrus will drop fruit if they are too dry or too wet. Apr 24, Lemon blossoms falling off a potted Lemon tree may be caused by cool drafts, as well as under or overwatering. A Lemon tree dropping flowers can be a sign of drought or other changes in watering.

When water is scarce, a Lemon tree will drop flowers and fruit to conserve energy. Flooding, waterlogged soil, or over-watering can cause Lemon blossom stumpmulching.barted Reading Time: 9 mins.

Jul 01, The National Gardening Association says that drafts, cold temperatures or fluctuations in soil moisture might be the cause of your lemon tree flowers falling off. Lemon Tree Flower Buds.

Apr 16, This layer of cells connects the flower to the tree – sub-freezing conditions injure the cells, and blossom drop will result. Trees that were not fertilized prior to the bloom period often drop excess number of blossoms, especially if soil fertility was extremely low.

The tree is reacting in a natural manner – it is ridding itself of a stumpmulching.barted Reading Time: 3 mins. Feb 26, A lemon tree (Citrus limon, U.S. Department of Agriculture plant hardiness zones 9 to 11) can be a beautiful feature in a home or stumpmulching.bar tree also gives off a fragrant citrus scent that enhances its surroundings. What's even better is that your lemon tree can bear fruit for you to use in your cooking and cocktails.

When you're trying to grow lemons, it may be helpful for you to. Citrus trees tend to be extra sensitive to that shift and what seems like a minor change in light intensity or the amount of humidity or water it receives can cause leaves and developing fruit to drop almost overnight. Sunlight: Lemon trees need eight hours of direct sun per day. You can get away with six, especially during the winter off-season, but bright light is required for good fruit stumpmulching.bar: Gayla Trail.