I have my avocados on a south facing wall. I've heard of farmers planting dragon fruit as a companion to the avocado. Anyone know if this would work?

I have done it...  but the Dragon Fruit was in pots and the Avocado tree was pruned heavily to let in sun and control the height.

Yellow
YELLOW

Which “Yellow” Dragon Fruit?

Not all Dragon Fruit sold as “Yellow” taste good IMO.

Huge difference between Yellow Megalanthus and Yellow Undatus Dragon Fruit.

So I purchased a few more of these today and I bought the ones with the pieces of the DF stem on them still.
Is there anything special I should do to them to make sure they take?
- Rooting hormone?
- Making a newer cut at the base to encourage root growth?
- Should I use a "humidifier" - ie, since I'm using red solo cups do I put a plastic bag over the cups?
thanks

I asked a friend who successfully rooted a piece of giant yellow Megalanthus your question.

He said;
Many people just root them like normal cuttings.
This time of year is not the ideal time for cuttings.
I rooted my megalanthus in the winter time and I had to bring it inside into a sunny window amd place a heating mat underneath.

note these are written a while ago and some of my opinions have changed with growing things since then, but the basics hold true for grafting.
some of the articles are here: http://kadasgardens.com/Articles.html
because hylocereus have thin ribs, they dehydrate super fast.  i would graft tips, or cut the tips and wait for new offsets to emerge and graft teh new offsets for a thicker, rounder scion that is a hundred times easier to work with.
note this is mainly focused on using hylocereus as the root stock for slower and rarer cactus species, but it would be the logical rootstock for a hylocereus plantation as well so may be useful.
http://kadasgardens.com/grafting5.html
and if you are a breeder and trying to get new seeds up to snuff, this is the the best option for such endeavors.
http://kadasgardens.com/grafting1.html

Several Southern California Dragon Fruit hobbyist are interested and have shared pictures on Facebook of grafting Dragon Fruit onto hylocereus stock.
I am sure that it can be done, but still waiting for pictures of success getting the grafts to flowering stage.

I like fig trees.

Quote from: ricshaw on January 14, 2018, 08:01:42 AM

"Most of the avocado roots are in only the top six inches of soil and are under the canopy out to the drip line."

From:
https://www.californiaavocadogrowers.com/sites/default/files/documents/Irrigating-Avocados-Fact-Sheet.pdf

I did know about that, but it doesn't answer my questions.
I did find some sources stating 5-20 gallons several times per week once adults, but there is a big difference between 5 and 20 plus "several" is even more generic.

Did you bother to look at the link I provided above? HOW MUCH WATER TO USE:

December 13, 2018

“In a ground-breaking discovery encompassing six years of research, an international team of scientists led by UC Davis chemical ecologist Walter Leal announced they've identified the sex pheromone of the Asian citrus psyllid (ACP), an insect that feeds on citrus and transmits the bacteria that causes the deadly citrus greening disease known as Huanglongbing (HLB).”

http://ucanr.edu/blogs/blogcore/postdetail.cfm?postnum=25882

Simon, I apologize for taking so much of your time. I didn't mean to give you the burden of providing proof, just trying to figure out if anyone has a giant and a normal growing and fruiting together. At this time, it sounds like the answer is no, but you may soon. For the record, I hope that a giant variety exists.

The giant Megalanthus variety Fruit is now being sold in the U.S.

People are buying it, sharing pictures, and growing the seeds.

Thank you Simon for the update.
I believe that the Giant Megalanthus seeds will grow true because, like Vietnam DF, I doubt that every Gisnt Megalanthus plant in Ecuador is a clone from the same one plant.
I also doubt that Giant Megalanthus growers in Southern California will have the same results as Ecuador growers... but definitely worth trying.

This worked for me;

Let's talk Blueberries... 
https://www.ottoandsons-nursery.com/FruitTrees/Blueberry.html

In containers

Starting with a 5 gallon size plant, you need 'Soil Mix' of:
1/3 …Organic Potting Soil/Peat Moss
1/3 ...Azalea/Acid Mix
1/3 …¼" Pathway Bark
A liberal handful of Soil Sulfur.

Blend your mix & add the soil sulfur. Next you will need a 16"-20" pot (clay is always best & the bigger the better to allow root-growth & cut-down on shifting).
A few stones or some gravel or pottery-chards, to help keep the drainage hole open, and you are ready to plant!

Pack the bottom of your container with the soil mix. Set the Blueberry bush in and adjust the soil level, leaving 1"-2" for watering.
Just firm the new soil around the root-ball, give a generous watering & now wait for your Blueberry crop to come in!
On breakfast cereal, in muffins, or just FRESH! Hello anti-oxidants!

Additional hints:
Never let Blueberries dry out. Fertilize with an Acid based fertilizer about once a month. Liquid Fish Emulsion, will do the trick. Blueberries love full sun. Plant several varieties for better pollination & a larger yield per plant.

Quote from: ricshaw on November 26, 2017, 07:37:36 PM

Quote from: FamilyJ on November 26, 2017, 07:53:46 AM

Currently have Haileys Comet, White Vietnamese, 3 Diferent type of Yellow Dragon fruit, Kathie Van Arum, waiting to order Frankies Red and maybe Asunta

FYI Epicacti Nursery posted on Facebook;

"New Dragon Fruit varieties available in Spring April/ May and to be added to Mattslandscape.com catalog or can be ordered thru or picked up at walk in nursery Epicacti.com in spring 2018."

1) Tricia 
2) Paisley 
3) Edgar   
4) Townsend Pink
5) Asunta #2
6) Asunta #3
7) AX
David Bowie -previously out of stock but been duplicating so should have plenty next year spring 2018
9) Armando 
10) El Grullo -previously out of stock but been duplicating so should have plenty next year spring 2018
11) Houghton   
12) Lisa  -previously out of stock but been duplicating so should have plenty next year spring 2018
13) Hawaiian Gold   

***Even More varieties to be introduced mid summer 2018***

Did you try the Tricia by chance?

Yes, I have. I remember it being good and I am growing it.

The BIG problem is Tricia is a very thorny Dragon Fruit... worst than Lisa.

Quote from: ricshaw on November 29, 2017, 12:32:32 PM

Today was the day...
BRIX measured 22
It is a winner... tasted very good,
but not very productive or good grower for me.

Man that looks good, and did it taste like something similar to explain? like everyone says one of the Asunta's has a hint of cinnamon,  I love that it looks unique too. Thanks for Sharing info

It tasted like Megalanthus, not complex, just sweet. I think that the uniqueness of hybrid and the flesh color are a plus.