Lemon Cypress Indoors ‘Goldcrest’ (Cupressus macrocarpa) Plant Feed. Apply a balanced liquid fertilizer monthly during active growth. Watering. Water thoroughly but allow soil to dry slightly between waterings. Soil. All-purpose potting mix. Basic Care Summary. Water thoroughly but allow soil to dry slightly between waterings. Click to see full answer. Subsequently, one may also ask, how do you care for a lemon cypress tree indoors?LIGHT: Indoors, Lemon Cypress should be close to a window where it will receive at least 6-8 hours a day of direct sun. TEMPERATURE: Plants prefer cooler temperatures of 55-65°F. Water when the top 1-2 inches of potting mix is dry to the touch. Be sure not to over water, which can lead to problems with root rot.Beside above, how do you revive a lemon cypress tree? If the tree stands in water too long, it can damage the roots and kill the tree. Let the soil dry out on occasion to ensure that the tree isn’t getting overwatered, particularly during the rainy season. If you live in a dry climate, mist the tree every few weeks to keep the foliage its bright, cheery green. Also question is, how do you take care of a potted cypress tree? Grow your potted cypress tree in well draining, sandy/loamy soil. To amend soil, use peat, up to a 50 percent mixture. Place the tree in an area that receives morning sun and light shade in the afternoon. Water your potted cypress tree deeply, and keep the soil moist.Why is my lemon cypress turning yellow?We suspect that the yellow foliage is perfectly normal, as the leaves do turn yellow, ergo, the name ‘Goldcrest. ‘ In terms of the amount of sun that is appropriate, here are the Growing Conditions from our webpage on that plant. We consider “sun” to be 6 hours or more of sun a day.