Aglaonema costatum, the dotted aglaonema

To find out if your plant is thirsty, stick your finger in the soil. When the surface is dry (about three centimetres), then you need to water your Aglaonema costatum. Aglaonema costatum like moisture, but not stagnant water. Make sure that the potting soil remains moist, but that the rootlets are not drowned.

If you can, use non-calcareous water such as rainwater or filtered water.

Also make sure that water doesn't stagnate in the saucer or planter.

Spray foliage with water at room temperature. Use rainwater or non-calcareous water to avoid the appearance of white spots.

Every spring, repot your Aglaonema costatum to give it more space.

Aglaonema costatum like to be cramped. Re-pot in a pot one or two centimetres wider than the previous one. Choose a pierced plastic pot. This material retains moisture and is better suited to the plant's needs. Line the bottom with clay balls for drainage.

This variety thrives in rich soil. You can use potting soil for green plants and add compost or ground horn. Pour in a layer of substrate and place your subject in the center. Fill in with potting soil and tamp down.

Water to remove air bubbles and encourage rooting.

To promote the growth of your Aglaonema costatum, apply fertilizer in spring and summer.

To support your plant's growth, feed it every two weeks with a liquid houseplant fertilizer.

When dust accumulates on the leaves, the plant slows down its photosynthesis process and its growth. To keep your Aglaonema costatum healthy, clean its foliage with a damp, clean cloth.

Aglaonema costatum are toxic plants. Wash your hands after touching your plant, or wear gloves when handling it.

Your Aglaonema costatum does not need pruning. You can remove wilted leaves and cut back the flowering stem after flowering.

Remember that the plant is irritating. Use pruning shears or wear gloves during the operation.

Cutting is carried out during the strong growth phase, generally in spring and early summer.

Take advantage of repotting to divide your Aglaonema costatum. Once your plant has been dug up, locate a rhizome with one or more stems. Each stem should have at least three leaves.

Using your hands or a clean, sharp tool, separate the rhizome from the rest of the plant.

Pour a drainage layer (gravel, clay balls, pozzolan, etc.) of one to two centimeters into a bucket or small pierced pot. Add a draining substrate, such as universal potting soil mixed with sand.

Make a pilot hole and plant the cutting. Do not bury the leaves. Press lightly and water.