Apartment plants

Yellowed gardenia

Yellowed gardenia

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Question: Yellowed gardenia

Why does gardenia make yellow leaves?

Answer: yellowed gardenia

Dear Lucia,
gardenias belong to a genus of small or medium-sized shrubs, widespread in Asia, Africa and Oceania; in particular in the nursery we find hybrids, often obtained from two species, gardenia jasminoides and gardenia grandiflora. They are particularly appreciated for the beautiful dark foliage and for the flowers, with fleshy petals, decidedly very fragrant, used also in the perfume industry. Gardenias in nature are evergreen shrubs that grow in the undergrowth, semi-shaded, fresh and moist. Similarly, in the apartment or in the garden, we will have to try to grow it in conditions similar to those found in nature. Then we place our gardenia in a luminous half-shade, where, however, it does not receive too many hours of direct sunlight, especially during the hottest hours of the day. We water regularly, but avoid water stagnation, otherwise the plant could suffer a lot; excess watering is often one of the causes of leaf yellowing; we water regularly, but only when the soil is quite dry; rather, especially in hot weather and in winter if the plant is grown at home, we vaporize the foliage. The typical undergrowth soil has an acid ph, gardenias are acidophilic plants, such as azaleas or hydrangeas; if they are grown in the common universal soil, or are watered with water rich in limestone, they tend to be affected by ferric chlorosis, which typically causes the leaves to yellow. The leaves affected by chlorosis remain very light in color, but without drying or falling. To avoid this event it is advisable, first of all, to cultivate gardenias in a good soil for acidophilic plants; secondly it would be advisable to water them with limestone-free water; and it is also good to supply, at the end of winter and at the end of summer, a soothing fertilizer, which increases the amount of bio-available iron in the soil.