About: Rafael Beck

Hibiscus plants are common garden plants that can also be grown indoors. Many gardeners like hibiscus because they are hardy plants, and many varieties of the hibiscus can survive colder weather. Identify problems with a hibiscus plant as soon as possible and make sure that the plant is treated for any issues. Yellow leaves on a hibiscus can point to several problems, and treating them as soon as they are diagnosed will help the hibiscus return to health.

Causes of Yellow Leaves on Hibiscus Trees

Check the hibiscus plant for signs of pest damage, include insects and fungal problems. Indoor hibiscus plants are susceptible to mites, which can sap nutrients from the plant and turn the leaves yellow. Fungal problems can turn the leaves yellow and leave spots on the leaves or stems of the plant.

Issues with the amount of water the hibiscus receives can also cause the leaves to turn yellow. As the plant grows and the seasons change, the amount of water requires to keep the tree healthy varies. Too much or too little water will cause the leaves to yellow or drop.

Pest and Fungus Problems of Hibiscus

Apply a fungicide or pesticide to the hibiscus plant if any pests or fungi are found. This will help control the problem and restore the hibiscus plant to health. The best pesticides to use for hibiscus are insecticidal soaps that can be applied to the leaves and stems of the plant to control pest problems.

Remove any leaves affected by fungal problems to stop the fungus from spreading to the rest of the plant or other plants. Dispose of the affected leaves immediately. If the hibiscus has fungal problems, use a fungicide that is formulated specifically for the type of fungus affecting the plant.

Where to Grow Hibiscus Plants – Yellow Leaves on Hibiscus

Change the location of the hibiscus plant if it is in a planter. Hibiscus plants kept in full shade are not able to process nutrients properly and may have yellow leaves. Hibiscus trees that are in full sunlight can become scorched and dried out. Move the hibiscus to an area where it receives partial sunlight to help keep it healthy.

Use a balanced, time-release fertilizer that can be applied to the soil every two months. The proper amount of fertilizer will help keep the hibiscus healthy and prevent its leaves from turning yellow. Water-soluble fertilizers can also be used, although these need more frequent application.

How to Water a Hibiscus With Yellow Leaves

Alter the amount of water the hibiscus receives. Both too much and too little water can cause the plant to become stressed, which can result in yellowing leaves. Make sure the soil is draining properly. The soil around the hibiscus should be moist, but not saturated with water.

Water the plant only enough to keep the top portion of the soil moist if the leaves are yellowing in the fall. The plant is attempting to become dormant and requires less water; … Read the rest

The Welwitschia mirabilis is variously called a plant or a small tree, although many botanists consider it a dwarf tree related to the pine. Though it is grown on other continents today, it is believed to have originated in Africa. It is found in a narrow area of the the Namib Desert in southwestern Africa for about 600 to 700 miles or 1,000 kilometers from near the Kuiseb River in central Namibia to the city of Mossamedes in southwestern Angola.

It’s Edible; How It Survives Harsh Environments

Belonging to the Welwitschiaceae family, the Welwitschia is sometimes eaten by humans, who more often than not eat part of the female tree either raw or after it has been cooked in ashes. The elephant, zebra, rhinoceros, oryx and springbok are among the animals that eat it. The typical tree grows to about 500 millimeters or 19.69 inches tall. The tallest Welwitschia on record was found in Namibia and measured 1.8 meters or 70.87 inches in height.

But, in general, it’s not height that marks the Welwitschia’s appearance but its broad,stubby look. Its leaves droop down, and as time passes, the dusty and windy conditions of its environment may put some rips in the leaves even though they remain more or less immovable. The broad leaves help to keep the tree’s soil moist and cool while also lessening soil erosion. Their bark is like cork.

A Cone-Bearing Plant with Deep Roots

Seeds from the tree sprout only in heavy rains and since the Welwitschia grows in arid and semi-arid environments, sometimes it’s a long time between rains. Fortunately, however, the seeds of the Welwitschia are hardy and can survive for years before heavy rains come to make them sprout. Heavy fog is essential to the Welwitschia. When the seeds do sprout, the fog of the areas where they grow gives them the moisture they need to exist until the next rains. The tree’s leaves have stomata or very small pores that absorb the fog’s moisture.

The Welwitschia is a cone-bearer with separate male and female cones. The female cones are larger than the male cones, which flower. The flowers on the male cones produce pollen to pollinate the female trees with the help of an insect called probergrothiussexpunctalis. A female Welwitschia can easily produce 10,000 seeds. In the spring, the female cones release seeds, which are carried by the wind. The tree’s roots can go down into the ground as much as 30 meters or 98 feet. It also has side roots.

Discovery by Europeans

The Austrian botanist Friedrich Welwitsch first saw the plant in the Namib Desert in Angola in 1859. Three years later he brought it to the attention of Sir Joseph Dalton Hooker of the Royal Botanic Gardens at Kew (England). Hooker named the plant after Welwitsch. Mirabilis means marvelous in Latin. Even though the species name was changed to bainesii, it never caught on so the term mirabilis is still used today.

It has been written that Welwitsch preferred … Read the rest