Kumquats, like their cousin citrus trees, are quite heavy feeders. However, these babies are not too picky when it comes to food.

If the native soil in your property doesn't provide enough nutrients for the trees, you may need to feed them. Otherwise, they would do well with what's available.

Let's check out some good food ideas for feeding.

For Kumquat Trees in Ground

kumquat-tree-grown-in-ground
Beautiful kumquat tree near a station in Japan

Here's an idea (from Supreme Family Garden) that you can try for kumquat fertilizer:

  • A dark bucket
  • Superthrive (natural & non-toxic but not organic)
  • Banana peel
  • Egg shell
  • Epsom salt
  • Lettuce

In the dark bucket, we mix in some Superthrive, some banana peel & some egg shell. The darker color helps absorb more heat & thus helps break down the content inside. We leave the bucket in a warm place for a while.

After the materials have been broken down & given out quite an unpleasant smell, we can start using them as a fertilizer for our kumquat trees. You can pour some of the liquid around the plant.

If your land is slightly elevated, make sure to pour on the higher end; so the liquid can flow down, making it easier for the roots enjoy. Adding some epsom salt (magnesium sulfate) & lettuce helps with the green leaf growth. The banana peels we used earlier is for phosphorous & egg shell for calcium (our guess).

Before using this solution, you can try mixing some Milorganite into the soil. This stuff is good for the nitrogen & is sold in a big bag for very cheap. People also use it for their lawn. Remember also to add chelated iron if needed. This helps with the yellowing of the leaves.

Some folks say that when you use nitrogen, it blocks out the calcium intake. That's why magnesium (like epsom salt) or chelated iron is recommended as some supplements for the plants.

For Kumquat Trees in Pots

kumquat-trees-grown-in-pots
Fruitful kumquat trees grown in containers

When growing your kumquat trees in pots, the key thing you should watch out for is water drainage. Kumquats, like other citrus trees, don't like wet feet. They'll rot easily if there's standing water at the bottom.

With that in mind, you can creatively mix the food for your baby. Here are some ideas:

Osmocote is a slightly more affordable plant food that can be used for 6 months. We don't have to keep feeding the babies everyday & it doesn't burn the roots.

If you have some extra cash to spend, check out Citrus Tone. It's more expensive. This organic plant food has strains of bacteria that are beneficial for the kumquat roots.

Finally, EBStone provides selected citrus tree food that promotes lush green foliage & loaded kumquat trees.

Citrus & Fruit Tree Food 7-3-3 – E.B. Stone Organics
E.B. Stone Citrus & Fruit Tree Food is a blend of select natural organic ingredients for use with citrus and other home orchard fruit trees and with small fruits like berries and those grown on vines. It is formulated to encourage new growth, lush green foliage and to support bountiful crops. Contai…

We couldn't find this product on Home Depot. On Amazon, it's just too expensive. You may want to check out the nearest store here:

Find a Store Near You - E.B. Stone Store Locator
Use the Store Locator below to find a nursery near you for all of your favorite E.B. Stone Organics products. Search through the E.B. Stone Store Locator for locations in the USA and Puerto Rico.

Happy Feeding

Happy trees, happy humans. Yum yum, it's dinner time. When you do the fertilizing for the babies, make sure the weather is nice & cool. People do it in the evening time or early morning, especially for kumquats in pots. Hope this was helpful for your little kumquats. Thanks & see y'all next time here again.

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