Too Small A Container

It looks like your plant is in a relatively small container and it may be getting too much or not enough water for the size of the root system. Nutrient/salt excess can also cause the browning of the leaf tips/edges as we see in your photo; however we’re leaning toward too much water because the affected stems are yellow. Roots that are drowning or too dry cannot function to bring the necessary water and nutrients up thru the stems and leaves. Also, this plant will perform much better if you plant it in a sunny, well drained area of your garden. If you must grow it in a container, we recommend only watering as the soil begins to dry out on top. As the plant grows you’ll need to put it in a larger container, but be careful not to go too large, and don’t over-water. As the root system fills out the pot (and good leaf development is occurring) you can begin to water more, keeping the soil evenly moist.