9 Reasons Why Your Houseplants Have Powdery Mildew On The Soil

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Transcript

00:00Nine Reasons Why Your House Plants Have Powdery Mildew on the Soil

00:05Lack of Beneficial Microorganisms in Your Soil

00:09Sterile potting mixes lack competitive microbes, letting mildew colonize.

00:14Reintroduce compost or healthy soil to restore balance.

00:19Contaminated potting mix or shared tools

00:21Bagged mixes or unsterilized tools can carry spores between pots,

00:26source clean soil, and disinfect tools with alcohol.

00:31High ambient humidity and inadequate ventilation.

00:34Humidity above 70% with poor airflow encourages spores to settle.

00:39Increase ventilation using fans or occasionally open windows.

00:43Overwatering and persistently moist soil.

00:47Consistently soggy soil promotes mildew and root rot.

00:50Let top inches dry, use draining mixes and empty saucers.

00:54Accumulation of organic debris on soil surface.

00:59Decaying leaves and petals create a damp buffet for mildew.

01:03Remove litter and top dress with grit or sterile sand.

01:07Crowded plant placement reducing airflow.

01:10Plants grouped tightly trap humidity around soil surfaces.

01:14Space pots and rotate positions to enhance airflow, reducing mildew establishment.

01:20Cooler temperatures.

01:21Slowing soil drying.

01:23Cool room slow evaporation.

01:26Keeping soil wet for spores.

01:28Move plants warmer or use heat mats to assist drying.

01:32Lack of sufficient light to evaporate surface moisture.

01:36Dim locations hinder surface drying and favor mildew.

01:39Provide brighter light appropriate to species to speed daily evaporation.

01:43Overhead watering or watering late in the day.

01:47Evening or overhead watering leaves surface puddles overnight.

01:51Water mornings, bottom water.

01:54And aim gently to minimize compaction.