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1

Citrus General Discussion / "Perfect" citrus fertilizer.

« on: June 18, 2019, 04:15:00 PM »

I have read on many websites that the best fertilizer to use for citrus is one with a ratio as close as possible to 5:1:3.
Where did this idea come from?
Are there any peer reviewed scientific papers to back this up?
Is it based on the NPK ratios in citrus tissues?
Has anyone actually shown that citrus take up these nutrients in a ratio of 5:1:3?

2

Citrus General Discussion / How long does it take for trifoliate cutting to produce fruit?

« on: June 05, 2019, 09:11:59 AM »

I took two trifoliate suckers from a rootstock grafted with a Meyer lemon scion and rooted them in water. That was 2 or 3 years ago. They are now in 3 gallon pots and are 4 ft tall. When can I expect them to bear fruit?

3

Citrus General Discussion / Can I over winter trees in semi-dark?

« on: May 25, 2019, 10:23:19 AM »

I am about to move to a new home and cannot take my greenhouse with me. I will have only a few areas with plenty of sun and so am considering overwintering them in the basement. However, the basement has few windows and so is rather dark.
Will I be able to successfully over winter them in semi-dark?
At what temperature?

4

Citrus General Discussion / Can a graft a large diameter scion on to a small diameter rootstock?

« on: April 26, 2019, 11:52:05 PM »

I have rootstocks of 1/8 inch diameter to which I would like to graft 1/14 inch diameter or larger scions. How can I do this? Or is it possible?

5

Citrus General Discussion / Rootstock video

« on: January 30, 2019, 11:54:49 PM »

Just saw this video on rootstocks: https://www.youtube.com/watch?v=unTjLRQyY5Y

6

Cold Hardy Citrus / How should I plant P. trifoliata outdoors in zone 6a

« on: October 17, 2018, 01:25:25 PM »

I have a two year old P. trifoliata started as a cutting that I would like to plant outdoors. Any tips for ensuring its survival?

7

Citrus General Discussion / "Rooting cuttings -- Can we reduce the process to its essence?"

« on: April 14, 2018, 09:24:09 PM »

I read this thread on a fig forum. https://www.ourfigs.com/forum/figs-home/291461-rooting-cuttings-can-we-reduce-the-process-to-its-essence
It caused me to ask the same question about rooting citrus cuttings. From this posting: Question: What are the essential components of an environment that will cause wood to sprout? Under proper conditions, we should need no medium at all, other than air -- a stick of fig wood suspended magically in the air could sprout roots, if other conditions were suitable. If so, then everything non-essential might simply complicate the process and reduce the probability of success. The non-essentials could be eliminated, boosting the probability of success.
The poster in this thread found that fig cuttings will root without being stuck into a growth/rooting medium. Can this be true of citrus? In other words, what are the essential conditions required for rooting citrus cuttings?

8

Citrus General Discussion / Girdling (cincturing) of citrus

« on: March 26, 2018, 11:22:54 PM »

Is girdling to increase fruit size and yield a common practice by commercial citrus growers?

9

Citrus General Discussion / What is best for cotainer citrus: deep or squat container?

« on: February 26, 2018, 02:10:31 PM »

Does it make a difference if you use a wide, squat pot or a deep pot of the same diameter?

10

Citrus General Discussion / What temperature(s) should I maintain in my greenhouse?

« on: January 04, 2018, 10:23:26 PM »

My greenhouse contains seedlings and trees that are up to 10 years old. I would like the greenhouse conditions to be favorable for rapid growth of the seedlings and for maximum fruit development of the older trees. What temperature settings should I use for the day and for the night?

11

Tropical Fruit Buy, Sell & Trade / Need good vendor of jaboticabas

« on: March 28, 2017, 12:33:02 PM »

Anybody know of a good online vendor of jaboticaba plants?

12

Citrus General Discussion / Bleach for root rot???

« on: March 13, 2017, 11:24:34 PM »

In the FAQ section of the "other" citrus forum it says to use 1 part bleach to 4 parts water for treating root rot. Some hydroponics sites also mention using bleach but at much lower concentrations. Has anyone used bleach to cure root rot in citrus?

13

Citrus General Discussion / Need recommendation for container soil mix recipe

« on: April 24, 2016, 06:04:09 PM »

Can someone recommend a soil mix recipe for containers of 15 gal and up for growing citrus? I have tried commercial cactus potting soil but lost a nice calamondin as a result (root rot). I also tried Talpa's gritty mix on a few small trees but I need to re-pot 5 large trees and the gritty mix takes way too much work to prepare. Any suggestions?

14

Citrus General Discussion / Citrus susceptible to citrus greening disease infection by psyllid during flush

« on: February 16, 2016, 08:17:26 PM »

So pesticides would be more effective during flush.
Here is the article: http://www.eurekalert.org/pub_releases/2016-02/esoa-pbg021216.php

15

Citrus General Discussion / When to repot

« on: February 08, 2016, 10:24:36 PM »

I have a 40 year calamondin that has been in the same pot for about 5 years. Leaves look good but it has not put out any new growth in a while. But the root ball is pretty dense. Should I leave it in the same pot and prune the roots? Should I also prune the branches? Or should I just put it into a larger container without pruning it?

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