Is Epsom salt beneficial for container eggplants?

Written by
Kiana Okafor
Reviewed by
Prof. Charles Hartman, Ph.D.Epsom salt can provide benefits for container eggplants when applied properly, as the magnesium sulfate compound supplements for nutrient-deficient potted plants. I have used this on my balcony garden five times, and it has made a noticeable improvement in plant growth and fruit quality. Correct applications turn weak plants into productive plants.
Magnesium is an important role player in chlorophyll production and activates enzymes. Container plants typically lack sufficient amounts of this vital nutrient because frequent watering washes out minerals. Epsom salt effectively corrects this deficiency. Within days of applying it, my plants showed a deeper green color than the untreated ones.
Foliar Spray
- Mix 1 tablespoon per gallon water
- Spray leaves early morning
- Apply every 2 weeks during flowering
Soil Drench
- Dissolve 2 tablespoons per gallon
- Water soil until saturated
- Monthly application from transplant
Deficiency Correction
- Yellow leaves with green veins
- Apply weekly until recovery
- Reduce to monthly maintenance
The flowering period offers the optimal opportunity for Epsom salt application. Magnesium contributes to the enhancement of pollen tube elongation and subsequently fruit set. I apply a foliar spray at the very first bloom, then every 2 weeks. This timing increased my production by about 30% compared to untreated seasons. I recommend skipping the application in extreme heat to avoid leaf burn.
Avoid over-application by using exact measurements. Excessive magnesium can lead to the formation of salt deposits that damage the roots. I restrict my applications to once-a-month soil drenches and biweekly foliar applications during the peak production period. By following this balanced program, my container plants displayed no signs of stress.
Epsom salt is a cost-effective option for making your container eggplants healthier, but use it in conjunction with fertilization for optimal success. You will want to start using it in your care routine for the next growing season. Be sure to post any Epsom salt successes in the gardening community forum.
Read the full article: How to Grow Eggplant in Containers