The Tropical Fruit Forum

Coffee and kitchen scraps are no fertilizer for a citrus tree.  Luak, is correct, the container is too small for a 5-ft. tree.  The medium the tree is now growing in is not free draining enough. Straight potting soil is also not a good medium for the tree.  I would pull the tree out of the container, remove as much of the soil as possible, (flushing with water), avoid damaging the roots.  Replace with a faster draining mixture.  In the future use a real fertilizer that is higher in nitrogen and potassium, and lower is phosphorous. Good luck to you and this tree.

If your looking for Santa Teresa lemon bud wood, I can give you some.  I have an in-ground Santa Teresa lemon tree.   It really is a super lemon variety , and it is named after a great Saint -  Saint Teresa of Lisieux. Send me you address.

Very young citrus trees, don't produce great fruit.  Give the tree some time and the fruit should improve.

In the 2000-01 citrus season, Florida had 106 citrus packinghouses operating across citrus belt.  Each of the top 24 packinghouses sold more than 1 million cartons of fresh citrus that season.  The 2016-17 season saw only 26 packinghouses operating in Florida – All due to Citrus Greening Disease.

http://www.theledger.com/news/20170530/fla-packinghouses-struggle-to-maintain-supplies-amid-greening

A new step in food safety. Chinese website Alibaba offers food counters that immediately measure the amount of nitrate in your fresh produce, and knows whether your food has been exposed to radioactive radiation. For approximately 100 dollar

Nice looking tree.  Mandarins normally take 5 years or so before they start to produce higher quality fruit.  Each year from no your tree should show improvement.

They are sweet.  I have seen them in the store for the last couple weeks.  Don't have much acidic offset though.

Poncirus seed germinates poncirus trees.. However, if you plant Flying Dragon seed, less that 50 percent will be the true dwarfing Flying Dragon cultivar.  You can tell which are true Flying Dragon only by growing out the seedlings.  Three years ago I purchased 20 very young seedlings trees of "Flying Dragon" from Swimming Free.  I grew them out and only four of the seedlings were the true dwarfing Flying Dragon .

Clemenluz is another mutation of the Clementine.  Have be harvested a month earlier to aavoid frost.

http://www.freshplaza.com/article/175662/Chile-The-Andes-1cv.-Clemenluz-is-a-new-clementine-protected-variety

The history of the Arctic Frost hybrid satsuma, a Texas super star,---  who developed it and how it was developed.

https://today.agrilife.org/2015/06/10/arctic-frost-satsuma-mandarin-hybrid-named-new-texas-superstar/

Heinrich, I have never heard of an Ortanique flowering at such a young age, yours is the first.  As for the grapefruit's early flowering, it does happen more frequently than with other citrus varieties.  Reports of an early flowering grapefruit comes up on a more or less regular basis, but I have never known the early flower to produce a fruit.  Eugen Schleipfer is certainly correct, when this happens the tree does not produce more flowers for approximately 10 years, or until the tree reaches maturity.  One thing, it is certainly rare for a seedling grower to have two different citrus varieties produce juvenile flowers at the same time.   Thank you for your post and the nice pictures, Very interesting

http://www.krgv.com/story/35426586/citrus-canker-disease-nearly-wiped-out

Plastic seems like a good idea for frost protection, but it's just too thin to provide any insulation to plants. Since frost forms when leaf temperatures dip, simply covering the plant isn't going to be enough to protect it -- the trick is to use an insulated covering to capture heat that's radiating from the ground. Plastic that touches plants is even worse than no protection in many cases, since it can hold moisture against plant tissues and cause more serious freeze damage. However, when used as a row cover or placed directly on the ground around a plant, plastic can be an effective tool in the battle against frost. In general, you should toss plastic covers out of your emergency plant supply closet, but thick bedspreads, cardboard boxes and heavy curtains are still winners. Just ensure that when you cover your plant, the cover reaches the ground, trapping warm air under the plant's canopy. The better the cover does this, the safer your plant will be from frost.

http://homeguides.sfgate.com/not-cover-plants-plastic-frost-67563.html