Best Fertilizer for Ferns – Comparison Table
RANK
PRODUCT NAME
1
Osmocote Smart-Release Plant Food
2
Jobe’s Fern and Palm Fertilizer Spikes
3
Dr Earth Exotic Blend Palm, Tropical and Hibiscus Fertilizer
4
Miracle Gro All Purpose Plant Food
5
Palm Tree, Ferns, Cycads, Ixora Fertilizer
Best Fertilizer for Ferns – Reviews
Our Top Pick
Our rating:
As the name suggests, this plant fertilizer from Osmocote is suitable for use on ferns indoors and outdoors. It’s also very easy to use – simply sprinkle as much fertilizer as your plant needs (there is a useful measuring guide on the back to help you work this out), mix it into the soil, and water. It couldn’t be easier.
Containing 11 essential nutrients found in a fern’s natural growing habitat, the slow-release nature of this fertilizer allows you to feed your ferns under fairly low maintenance conditions. It only needs to be reapplied once every six months. To make things even easier, one application will give your ferns all the nutrients they need right up until it’s time to feed them again.
This plant food is made up of lots of little nutrient granules that are covered with a semi-permeable resin which, once wet, allows the nutrients to gradually seep out into the soil where they can be absorbed by your plant. These nutrients are also temperature sensitive, so more are released during warmer active growing periods, ensuring your fern has what it needs when it needs it.
Customers that purchased this fertilizer were amazed at how it helped the health of their plants improve, and also noticed a visible increase in leaf growth and new frond development. This amazing plant fertilizer is definitely one to use if you’re serious about getting your ferns big and beautiful!
Pros
- Really easy to apply – simply add to the soil, mix in, and water well
- Contains 11 essential nutrients that are slowly released into the soil for the plant to soak up
- Only needs to be applied once every six months
Cons
- As the empty nutrient shells remain visible in the soil, it can be easy to forget when it’s time to reapply
Our rating:
Specially formulated for use on indoor ferns and palms, these fertilizer spikes make it easier than ever to keep your plants healthy and strong.
Inserting the spikes down into the soil so they slowly release directly into the roots, gives your ferns a continuous supply of nutrients right where they need them most. By inserting them directly into the soil as one piece, you’re also guaranteed to be getting all of the fertilizer’s benefits without risking any spillages, wastage or evaporation.
These clever little spikes contain a mix of nitrogen, phosphate, calcium, magnesium, and sulfur, all of which will feed your fern and encourage growth without overfeeding, and one spike will last for two months, so you won’t have to worry about remembering to feed too regularly.
People that have purchased these fertilizer spikes noticed new fronds coming from their ferns after using them for just a few weeks and, in some cases, they have even managed to bring back ferns that seemed to be on the brink of dying.
Pros
- Solid spikes inserted directly into the soil mean no mess or wastage
- Contains all the nutrients that your fern needs to grow healthily
- The limited, slow-release formula removes the risk of overfeeding
Cons
- These have been specially formulated for indoor use only, so can’t be used on ferns out in the garden
Our rating:
Carefully designed for exotic plants, palms, and ferns, this fertilizer uses a proven scientific formula that provides optimal levels of plant nutrition to give you the amazing results you’re hoping for.
Handcrafted from feed-grade ingredients and enriched with multi-minerals and proteins found in plants, fish, bone, and mined minerals, this organic plant food helps to naturally promote the nutrient levels in your soil and, in turn, feed your plants with everything they need to grow big and strong.
Fantastic for using on an array of other tropical plants as well as ferns, Dr. Earth’s contains no synthetic materials, chicken manure, or toxic chemicals, and is a great choice for anybody who is looking to use all-natural ingredients or wants to garden organically.
The organic properties of this fertilizer make it safe to use around pets and children, and customers that have used this feed on their plants found that it helped to increase both their size and growth rate.
Pros
- Made from all-natural, organic ingredients
- Promotes nutrient levels within the soil to help feed your plants
- Can be used across a range of tropical plants
Cons
- The smell is quite strong, so is best made and used outside only
Our rating:
Packed full of essential nutrients that will help your plants grow strong and healthy, this all-purpose plant food from Miracle-Gro is water-soluble and gets straight to work delivering goodness to your plants, whilst guaranteeing to not burn them.
Safe for use on houseplants and garden plants, its balanced formula has been designed to work instantly, providing feed to all of your plants and giving them exactly what they need. It’s also incredibly simple to use! Just add one scoop per gallon of water to a watering can filled with water, and away you go.
Ideal for use on container-grown ferns and hanging baskets where soil nutrient levels are limited and can easily dry out in the warmer months, this instant-acting formula will feed your ferns without any risk of it evaporating away before your fern has had the chance to use it.
Regular feeding every two weeks with this fertilizer will give you the best results, and you will be able to see a noticeable difference in the general health of your ferns as well as an increase in new fronds.
Pros
- Starts working as soon as it hits the soil, making it ideal for container-grown ferns
- Can be used on houseplants and out in the garden
- Guaranteed to not burn leaves
Cons
- Has a more regular feeding schedule than other fertilizers, so can’t be mixed into the soil and forgotten about for several months
Dr Jimz Tree Secret
Out Of Stock!
Our rating:
If you’re looking for a product to fertilize your tree ferns with, then this blend of over 60 natural ingredients from Dr. Jimz is just what you need! Created with optimum health in mind, this plant feed will help to strengthen your fern and reduce the risk of disease.
Tested by microbiologists at Boise State University, Tree Secret has been shown to provide a 70% increase in beneficial bacteria within the soil just 24 hours after it was applied. This organic matter in the soil provides everything your plants need to thrive into strong, colorful specimens.
Its slow-release formula ensures that not all of the nutrients are used up at the same time, meaning that your plants and tree ferns have what they need when they need it, rather than having to take up as much as they can whilst it lasts.
The nutrients found within this fertilizer will also help your plants to heal themselves and strengthen their immune systems, making it easier for them to fight against any threat of disease.
Pros
- Strengthens your plants and reduces the risk of disease
- The slow-release formula ensures plants have nutrients available when they need them
- Proven to add a 70% increase to beneficial bacteria within the soil after just 24 hours
Cons
- Customers have found that, as this isn’t a concentrate, you require quite a lot of fertilizer for each plant
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