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Ever had this happen? It is the end of the rainy season, the air is damp, the soil never seems to dry, and suddenly the leaves of your Aglaonema or Hoya start turning yellow one by one. This is a care guide for Aglaonema and Hoya during the seasonal change. The short answer: water less, let the soil dry before the next watering, improve airflow, and cut away rotten roots as soon as you find them. Most yellowing comes from roots sitting in too much water, not from thirst.

Why Aglaonema and Hoya Get Sick So Often in the Late Rainy Season

In the late rainy season humidity is high and light is low, so soil dries more slowly. But we tend to water out of habit. Roots stay wet too long, run out of oxygen, and soil fungi such as Pythium and Phytophthora thrive in these conditions.

The two plants need slightly different things.

Aglaonema: likes bright indirect light, moderately moist soil, but never soggy.
Hoya: a semi-succulent epiphytic climber whose roots need lots of air. It prefers dry over wet, especially thick-leaved types such as Hoya carnosa.

Remember: Hoya tolerates drought better than waterlogging, and Aglaonema also dislikes wet feet.

How to Tell What Is Causing the Yellow Leaves

Yellow leaves do not always mean root rot. Check this list first.

Symptom	Possible cause	How to check
Lower leaves yellow, soft and watery	Overwatering, early root rot	Soil still cool and damp 5-7 days after watering; pot feels unusually heavy
Whole plant pale yellow, slow growth	Too little light in the late rainy season	Move closer to a window and watch for new leaves
Dry yellow leaves with crispy edges	Underwatering or fertilizer burn	Soil bone dry and light; root tips burnt
Blackened, soft, smelly stem base	Severe root and crown rot	Roots are dark brown and mushy when unpotted

The Finger Test That Really Works

Push a finger 2-3 cm into the soil. If it is still cool and damp, do not water yet. In the late rainy season Hoya is usually watered every 7-14 days, while Aglaonema is watered when the top layer of soil has dried, often every 4-7 days. Adjust for your pot and potting mix.

How to Rescue a Plant with Early Root Rot at Home

If you spot the signs, do not wait. The longer you delay, the further the infection climbs toward the stem.

Remove the plant from the pot and gently shake off the old soil.
Check the roots. Healthy roots are white or cream and firm. Rotten roots are dark brown, mushy and smelly.
Cut away the rotten roots with clean scissors, sterilized with alcohol before and after each cut.
Air-dry in shade for 2-4 hours so the cuts dry.
Repot in airy mix in a pot with drainage holes, not too big for the roots.
Hold off on fertilizer until you see new leaves or roots.

If rot has spread through more than half of the stem base, cut the healthy green firm part and propagate it. Aglaonema can be rooted in clean water or an airy medium. Hoya cuttings with at least 2 nodes root well in coco coir or perlite.

Potting Mixes for Humid Weather

Aglaonema: peat moss or good potting soil mixed with perlite or volcanic rock, about 2 to 1.
Hoya: coarse coco coir, pine bark and perlite, very airy so water drains fast.

Caring for Them in Condos and Offices During the Season Change

Closed air-conditioned rooms often keep soil wet longer than you expect, especially in corners without light. Try this:

Place near a window with bright indirect light for at least 4-6 hours a day.
Open the window or use a gentle fan for airflow.
Empty the saucer within 15-30 minutes after watering.
Do not give strong fertilizer to a weak plant. When it recovers, use half-strength fertilizer.

If you have dogs or cats at home, be careful. Aglaonema contains calcium oxalate crystals that irritate the mouth and throat if chewed, so keep it on a high shelf out of reach. Hoya is generally considered friendlier to pets, but still should not be used as a chew toy.

Myths That Make Sick Plants Worse

Yellow leaves mean more water: not always. If the soil is still wet, more water makes it worse.
A bigger pot will help: an oversized pot holds water longer and raises rot risk.
Mist every day: the late rainy season is already humid, and extra misting invites leaf spot and fungus.

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Is it a problem if only the lower leaf of my Aglaonema turns yellow?

No need to panic. One lower leaf yellowing now and then is natural leaf shedding. But if many leaves yellow at once and the soil is soggy, check the roots right away. Remove yellow leaves with clean scissors and let the soil dry more before the next watering.

How often should I water Hoya in the late rainy season?

Usually every 7-14 days. Water when the whole pot has dried and the leaves have softened slightly. In damp spots or dense soil, stretch the interval even longer.

Can a plant with root rot still be saved?

Yes, if some white roots or a firm green stem section remain. Cut off the rotten parts, dry the cuts, and repot in airy mix in a pot that fits the roots. If the whole plant has rotted, try propagating a healthy tip.

When should I replace the potting mix?

When the mix has compacted, dries much slower than before, or smells musty. That is typically every 1-2 years. If you find root rot or mold on the surface, replace it immediately.

If the plants at home are sending distress signals, or you want a healthy Aglaonema or Hoya for your work desk or condo window, message PAMA anytime. Come adopt a new buddy and heal your heart at home 🪴