The Tropical Fruit Forum

Poncirus X C. Unshiu sounds a lot like Prague Citsuma / Prague Chimera especially with that hardiness

Welcome to the forum

I grow some subtropicals and tropicals in containers as well in zone 7, just remember that dips into 25f in the ground is not the same as dips to 25f while the plant is containerized since the roots are exposed to cold air temperature vs in the ground which would be warmer. I will start bringing those plants in within the next week or so.

As for getting citrus specifically on that rootstock, some nurseries have a special order option (Madison Citrus comes to mind https://madisoncitrusnursery.com/). None of my grafted plants that I've ordered online from other sources have come in on flying dragon or trifoliate, I've had them come on carizzo, srs mandarin, and us-1284, or as cuttings on own roots.

I don't know if this helps but I've just remembered was able to root a molissima cutting, in water with rooting hormone.  I don't remember the specifics but I am sure I did not remove the leaves as I don't do this with my other passion vines and it was a green vine not a woody vine. I sent that cutting to a friend back in 2020 who lives in Florida and the vine ended up dying from the heat. I did the rooting in my grow tent under LED 12 hours on and 12 off, it's humid in the tent so they don't dry out. I bet if you leave it in water it will eventually root. I will look through my photos to see if I have anything saved, I did send the friend some pictures before I shipped some random rooted cuttings to her which included the molissima. 

Thanks franklazar26, highly recommended

top worked on trifoliate seedling


self rooted


t-bud on citrange, even made a flower

Mine is in the ground this year, it bushed out a little and grew a new central leader. Hoping it will be hardy, it's surrounded by an evergreen shrub in an L shape so area is pretty sheltered. House is right beside it. Plant in the back is maypop and there are strawberries in this bed. Don't know if I should remove the strawberry and maypop.

I had bark splitting with Poncirus+ on own roots but not the one grafted to regular Poncirus, they are planted in different parts of the yard so not sure if the one is getting more southern exposure. Have you tried painting the stem/ trunks with white paint to reflect some of the sun? Thinking of doing this. My citrumelo did have some bark damage on the southern exposure but has already healed over

 I bought a Mexican cream guava from home depot as well and so far it's only made green fruit without any sweet flavor at all, never turned yellow. We'll see what happens next season lol

Some more info about the prague aside from this forum :

https://citrusgrowersv2.proboards.com/thread/521/prague-chimera

http://hardycitrus.blogspot.com/2020/02/prague-citsuma.html

Haven't been able to find any other info on Sherman, even emailed the professor at the university that created it directly but did not get a reply. Figured since Sherman is deciduous it might be hardier than SunDragon. Florida does not have a budwood program for home growers only for commerical growers unfortunately

The vine with the smooth ovaries produces oblong fruit. Shape is more distinct while they are smaller and still growing, almost look like a banana passionfruit. The flavor is not as good as the round one on the right. But something very interesting about it is the smell, I get hints of pawpaw and banana.



side by side with the other vine

You will know very quickly if it has set, and to me it looks like it has! I noticed that your vine also produces fuzzy ovaries, my other genetically distinct incarnata vine has ovaries that are smooth:

original vine with fuzzy ovaries:








new vine: smooth ovary (before pollinated, and after)

Hmm so the "Mexican guavas" I've seen at the grocery store are small and round, these two fruits are pear shaped. Could be mislabeled or a different "Mexican" variety? The inside was white when I bit into the fruit, and seeds were fully developed.

I have the plant in full sun, it appears to be an air layer as I don't see a graft. The fruits are lowest on the branch which probably did not get full sun due to being shaded by the leaves. Maybe the tree did abort the fruit too soon and the heat softened it up?

Here are some pics, it's in a 3 gallon

Just did Hindsii x poncirus+ (dry pollen)





I have a little bonsai/ year old hindsii cutting noticed several flowers today.

My eyes hurt. Biggest issue I had was the dry pollen would not adhere to the paint brush

Let me know what they say, can't be coincidence that we both have infected plants from them