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People also ask
Do ferns need fertilizer to grow?
Feeding Fern Plants Most perennial ferns do not require fertilizer, however, can benefit from it. In fact, a 1/2-inch layer of aged compost applied in spring, covered by another inch of shredded wood mulch or straw mulch, can provide enough nutrients to maintain healthy fern plants while also helping to hold in moisture.
How do you fertilize Boston ferns in the summer?
In the spring and summer, Boston ferns need to be fertilized once a month. The proper Boston fern fertilizer to use in summer is a water soluble fertilizer mixed at half strength. The fertilizer should have an NPK ratio of 20-10-20. During the summer you can supplement the monthly Boston fern fertilizer with slow release fertilizers.
How do you fix over fertilized ferns?
If the outer fronds or tips of the fronds turn brown, this is a sign of over fertilizing outdoor ferns. You can then try to flush the fertilizer from the soil with extra watering. Ferns like a lot of water and should be fine with this flushing, but if tips turn black, decrease the watering.
How often should I fertilize my ferns?
Garden ferns should be fertilized annually in the spring. Outdoor container ferns can be fertilized in the spring and once again midsummer if the plant looks unhealthy. Avoid fertilizing in the fall, as it can be more harmful than helpful. Typically, ferns can get all the nutrients it needs from the soil.