Help With Flowering and Fruit Set

Flowering and fruit set is why we grow our beloved citrus trees. Either or the sweet aroma of citrus blossom or that great taste of fresh citrus that is hard to beat. When it comes to flowering and fruit set a healthy citrus tree is going to produce more. Optimization if the tree is done via fertilizing and care. Here are a few tips that may aid in ultimate results of flowering and fruit set.

Citrus trees flower and produce fruit in response to environmental stresses. Generally stress is considered bad, but in this case stress is natural and good. What is meant here is that a tree coming out of dormancy in the Spring is a good stress as the tree is doing what Mother Nature intended… Getting ready for a new year of growth and fruit production. Outside trees will be easy to produce flowering and fruit set as they are working in conjunction with the weather and seasons. Indoor citrus trees may need a little help and that is why it is always suggested to keep container citrus in a bright sunny place. The days and warmth are a good indicator to the citrus trees on what they should be doing.

Fertilizing right in the spring is always recommended as the tree is coming out of dormancy and going right into the growth and production stage. If your tree doesn’t have the food needed it will likely have a hard time producing. Another thing to consider for increasing bloom (which in the long run is fruit set) is added nutritional elements that citrus trees crave. Nutritional treatments right before bud set such as Calcium and Boron can aid the tree in getting what it needs at just the right time. Different micro-elements are needed by the tree for different things. Calcium and Boron are elements proven to aid the tree is flowering and fruit set.

Comments (23)

  • We have a cat and they are known to be attracted to green plants and may eat some of the leaves. Is a Persian lime tree harmful to pets(cat) if it would eat some of the bottom leaves?

  • I got a citrus tree from you guys from a greenhouse nursery. Its January and is covered in buds, I have it under an hps 150w light by a window as well. Does the tree think its spring and I should fertilize? Or did you guys fertilize it before it was shipped to them.

  • I have had my lemon tree for 2 winters. I live in NC. It produced growth this summer being outside, i brought it inside as freezing nights approached. It flowered in Dec. and all the blooms feel off , but no lemons. I don’t think it suppose to bloom in winter.
    It did the same thing last year. I purchased it in November in SC and it was blooming. the blooms feel off and no lemons then either!
    I put it outside in March and leave it all summer.

    Help please

  • received a Meyer Lemon for Christmas gift….in Pennsylvania, sunshine is so limited in the winter….it’s in a WEST window….the best we have in our house…..leave don’t look very lush, flowers dropping (which i guess they would now??)….smells pretty tho! Does it need a grow light? or do the leaves need to be spritzed? hoping i can keep it alive and thriving! thank you, LN

  • Jacqueline Kuetbach

    I have two indoor citrus trees, one is lemon and one orange. they were purchased at a reputable greenhouse in Sept. The lemon tree completely lost its leaves, while the orange one did not. We purchased a grow light in December as we were told they need more light in the winter, especially. I also mist them and give them plant food occasionally. Will the lemon tree start to produce leaves again? Also, will both trees start to flower in the spring? The orange tree has about 8 small oranges I would say are ready to pick. Would appreciates anything you can tell me about growing indoor citrus trees. Thanks very much!

  • i just got my meyer lemon plant today in the mail it looks great. the info paper said to polinate with a brush if being kept indoors but didn’t say what to use and when. Also I live in oregon so planning on keeping it indoors how often do i water it? thanks!

  • I have been growing my Meyer lemon tree for about a year now. It has had remarkable growth over the last year and has recently been blooming like crazy. Since the tree is indoors for the winter, I have been pollinating it as instructed. I have purchased the GrowScripts bloom time kit to provide the tree with micronutrients and have applied those as instructed. I water the tree every 2-3 days depending on how dry the soil is. I have been noticing over the past few days the tree has been dropping flowers with mini fruit and those without. Is this a normal occurrence? If so, is there anything I should or shouldn’t do to help prevent this?
    I’m assuming the tree is shedding the ones it thinks it cannot support or it simply has too many to support. But I am not sure.

  • HI! I purchased on of your meyer lemon trees from a local nursery a few weeks ago (end of february). I have it set up in a glass hallway with quite a bit of good south/west facing light. It is loaded with blooms and looks like it’s doing great. It has a great shape. However there is an abundance of green growth at the top since I’ve brought it home. Should I snip the new green growth to encourage fruit set? Also there is fertilizer in it (little green balls) but should i get something else to encourage fruiting? Thanks!

    • Always fertilizer. The little green balls are the fertilizer used at the nursery and YES you need to fertilize the tree. We like once every quarter or so in order to keep consistent feeding. Snipping the tree will cause the new growth to fork. SO tip it if you wish; it may not help with fruiting though. Know that the lemon you have is probably everbearing.

  • I have my lemon tree for 2 years now. The first year 2016/2017 it produce around 5 lemons. Brought it in during the winter and it stay health. Put it outside 2018 and it produced around 12 lemons. This winter I brought it inside and it strive at all. All the leaves fallen off on the floor. I water it just like always do. Gave it fertilizer, talk to it. It is now March 2019 and nothing. Please help!!!!!!

    • Go ahead and send us pictures so we can see what is happening. Many times there can be shock involved. Did it get to cold. Was it placed in a different location. Was it fed like last time? Etc. We can’t really tell what has happened but would be happy to look at a pic to help diagnose.

  • I have an orange and lemon tree, both have blooms, can I spray the tree with a Micronutrient Nutritional application while the tree has blooms.

  • I just bought a Cocktail tree [ key lime & meyer lemon ] . I live in Florida and have it outside in it’s pot. My neighbor has a key lime tree which is plentiful but I wanted my own. He was told to put “Hi- Yield” systemic insect control granules in it every 6 weeks. Should I be treating my plant also ? The only thing I have is Ortho Rose & Flower insect control plus …. can I use this?

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Products We Recommend

Citrus Tree Micronutrient 

GrowScripts Citrus Tree Micronutrient Nutritional is a formulation of micronutrients most often found deficient in Citrus. It is a product formula based on what is proven successful in the commercial citrus industry.

Kits and Subscriptions

GrowScripts is the next step in growing your baby successfully. Providing a simple, user-friendly, way to nurture citrus trees without all the guesswork. They've developed feeding programs that anyone can subscribe to.  

NPK Macro- Nutrients

With a coating based on temperature your tree will get the Macronutrients (NPK) needed through diffusion. When triggered this control-release product allows for feeding over months and not weeks.