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Topics - drymifolia

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One of the things that has done really well in my cold greenhouse over the last couple years is the Monstera that I bought as a small quart size tissue culture start and planted in the ground. It was alleged to be deliciosa, but I'm starting to question that ID as the leaves are smaller than I expect for that species, but maybe they will get larger over time.

In any case, it has started spreading a bit, and I'm considering letting it grow across the leaf litter and wood chip mulch under the avocado and citrus trees in the greenhouse, but I'm not sure if it is going to cause the trees any problems.

Does anyone have experience growing Monstera as a ground cover among avocados and/or citrus?

Looking for a fruit or two, or some fresh seeds, or even better a small bundle of bareroot seedlings of the black sapote, Diospyros digyna (aka D. nigra). The intent is to use them as rootstocks, so I might also be convinced to buy a grafted tree, but only if it's a male or bisexual cultivar. I'm planning use the pollen to attempt to hybridize with D. texana, so don't want a female-only cultivar.

Citrus General Discussion / What's wrong with this key lime tree?
« on: November 21, 2023, 08:53:10 AM »
My in-laws are in Miami, they have a key lime they planted a couple years ago. This year all the leaves look twisted like this. Is this maybe HLB?

Hi everyone,

I know that many of the earliest Mexican-type avocados will start ripening soon in CA, maybe already have started in warmer spots. As I've mentioned on here before, I'm organizing a cold-hardy avocado breeding project here in the PNW, and while my grafted greenhouse trees will hopefully start producing seeds next year, I've already got 50+ members signed up, and growing, so I'll need to start another batch of seeds this winter to keep up with the number of people wanting to join the project.

So, does anyone have extra fruit or seeds of any pure Mexican types? Anise-scented leaves, thin skin on fruit, etc. I'm in WA state, which does not restrict movement of avocados into the state.

Examples of cultivars that would be good, though many other cultivars or unnamed trees with correct traits would also be great:

Mexicola Grande
Lila (not Lula)
Del Rio

Here are some other cultivars that are not pure Mexican, though sometimes mistaken as such, but I'm not interested in these:


Either email at or PM me if you have any ripe fruit or seeds now, or expect to have them this fall. I'd be happy to pay any reasonable price, or could trade for scionwood if you are somewhere that can receive it from outside the state (so not CA, at least). I cannot necessarily cut all of these, but here's a list of what I've got grafted so far, so could potentially cut most of them:


I grafted Kishu scions (from CCPP) onto a few citrus in my greenhouse this spring. One of the grafts I did mainly as "security" in case the others all failed, was a cleft graft onto my TDE3 (Tahoe Gold) tree. That one did take, along with another one on a lemon seedling. The graft on a lemon looks fine, but for some reason the graft on TDE3 has completely yellow leaves, even though the TDE3 itself looks ok. Since the other graft looks fine I'll probably just remove this one soon:

I can't think of any reason these wouldn't be graft compatible, but that's the only explanation I can think of for the appearance. Any other ideas?

I know that there's a scourge of misidentification for Morus nigra, so I've been approaching with skepticism the alleged seeds I bought from Sheffield's. Here's what the seeds look like:

 I started germinating my first test batch in mid-March, and those sprouted about 5 weeks ago. Here's what they looked like then:

I know M. nigra leaves are more fuzzy and "fig-like" but I'm not clear at what point they start looking that way, and whether M. alba seedlings have any fuzz in their first month or two. Here's a closeup of a couple of my seedlings now at 5 weeks, with the leaves seeming both a bit shiny like alba and a bit fuzzy like nigra:

Has anyone here grown both alba and nigra from seed? Can you tell from these photos whether these are indeed accurately labeled seeds? Or will I need to wait for them to get a bit larger to ID?

Tropical Fruit Discussion / What killed my greenhouse banana?
« on: March 07, 2023, 07:44:19 PM »
I planted a 1 gal pup of a Dwarf Cavendish banana in the ground in my greenhouse in spring 2021. It grew great that summer, then stopped growing over the winter, and started again the next spring. Last year it reached about 8' by the time it stopped growing in the fall, here's a photo from mid-October, it only unfurled one more leaf after the one unfurling here:

It looked fine for the first part of the winter, nice green leaves for the most part, with only the oldest leaves getting a little yellow from the cold temperatures. Here's a photo from mid-January:

Then, a little over a month ago, the leaves started dying at a rate of about one or two per week, from the bottom up. This was what it looked like by February 20, with most of the leaves dead but the inner leaves still mostly green:

Yesterday, I decided it was completely dead, it was almost a foot shorter than before (shriveled), the cigar was brown:

When I cut into the top, the heart was brown and soft:

As I cut off chunks to remove the rest of the p-stem, it started smelling a sickly sweet scent, similar to fermentation, and by the base it was very gooey and definitely starting to rot:

I had watered it pretty regularly, and tested with an orchard soil moisture probe so I only watered when it was medium-dry or drier. I don't think the problem was watering-related.

There had been a LOT of rain recently, and it's possible there's a deep perched water table that the roots didn't reach last year but they were waterlogged deep this year?

The weather was cold, but not colder than the previous year when it over-wintered fine.

My leading theory is some kind of soil pathogen that was able to attack easier in the winter when the defenses were down, but no clue what pathogen that might be.

Any thoughts?

Tropical Fruit Discussion / Rootstock size for mango grafting?
« on: February 16, 2023, 03:40:50 PM »
I'm planning to get some scionwood from my brother at some point in the next month or so (from the tree discussed in this other thread), and I have two different seedlings in my greenhouse that I could potentially use as rootstock, but would prefer to use the smaller one, which is the seedling of the tree I'll be grafting. Here's what it looks like now:

I don't know if that seedling (about 7 months old, stunted from a winter in a cool greenhouse) is too small for successful grafting, though. I know there are some grafting techniques (Z graft, for example) that can be used when a rootstock is thinner than the scionwood, but I'm not sure if those work well with mangos.

My other option to use as rootstock is a two year-old Ataulfo seedling that I have planted in the ground in the greenhouse, but I kind of want to grow that one out, even though it's a much better size for matching scionwood. Here's what that looks like:

Is there any way to use the little seedling without waiting for it to grow more first, or should I stick with the larger one instead?

I'm sorry if this has been discussed on here already, I tried to use the search feature and couldn't find any on-point discussions.

My brother lives in what I believe is a historically Haitian neighborhood in Ft. Lauderdale, and his house came with a very large mango tree, far too thick to reach your arms around the trunk. We estimate 30+, maybe 50+ year old tree. There's no obvious sign of a graft, but on a gnarled old trunk that might be easy to miss.

It produces a pretty heavy crop of enormous fruit each year, and I had them send me one last year so I could try it since I'm never in south FL in the right time of year to catch them. This was apparently a little larger than average, but not the largest, weighing in at just over 3 lbs:

Here it is with a store-bought Ataulfo for comparison:

This is what it looked like fully ripened (maybe even a day or two over-ripe):

I sadly didn't take any photos of it cut open (we were camping and my hands were way too sticky, and it was devoured too fast), but here's what the seed looked like (the compass has a scale):

The seed was mono-embryonic and already very much sprouted, this is what it looked like as soon as I removed the seed case:

I'm growing the seedling in my greenhouse and it's done fine so far, but growing very slowly.

So that brings me to the point of this thread, does this fruit seem to match any known cultivars? My first guess was Madame Francis because the fruit shape seems roughly correct, but (1) these seem larger, (2) they don't turn as yellow when ripe, and (3) from what I can find Madame Francis is usually polyembryonic.

Without an obvious graft union, I'm thinking maybe this was a zygotic seedling of Madame Francis. Any other ideas?

Tropical Fruit Discussion / What triggers flowering in tropical guava?
« on: February 01, 2023, 12:03:16 PM »
Does anyone know what induces flowering for guavas? I have a couple small guavas that I've grown in containers for a few years now, and they are pretty little shrubs but haven't ever flowered. They spend most of the summer outdoors and most of the winter in my greenhouse (which is pretty cold, but stays above freezing). I recently moved one of them into the house and it's starting to grow, but don't see any hint of flowers. Here it is now:

My understanding is they usually fruit within a couple years when grown outdoors in the tropics, but I'm not clear on what triggers that transition to flowering. I.e., should I give special nutrients, temperatures, or watering patterns? Any insights?

Tropical Fruit Discussion / Germinating black sapote (D. digyna)?
« on: January 07, 2023, 07:04:41 PM »
I picked up a couple black sapotes from "Robert Is Here" in south FL last week, and saved 8 seeds. They are in a bag in a warm place with a slightly damp paper towel, but it just occurred to me that I'm not sure if these need some kind of stratification first. Does anyone have experience sprouting these? Any tricks or preferred techniques?

Does anyone know if these are compatible?

Couldn't find any reference to anyone trying. I've got a bunch of texana seedlings and eventually want to try to cross them with nigra, so I'd love if I could also use the extra seedlings as greenhouse rootstocks rather than having to grow or buy separate nigra rootstocks.

I'm a couple years into a long-term avocado breeding effort here in the Seattle area, and starting next spring I'll be delivering trees to anyone in this broader region who wants to join the project. Here's the sign-up form:

I'm skeptical of the hardiness claims some people have made for certain avocado cultivars, but I'll be testing both grafted trees and intentionally crossed seedlings of allegedly hardy cultivars, which I'm growing in my greenhouse to produce seeds and scions.

As that website explains, you should expect most of the trees distributed in the project to die or suffer badly, but if any prove hardy here I'll be propagating those and sharing them with members of the project to test them further.

I'll be focusing on zone 8b+ in western WA for this first delivery, but anyone in this broader region in zone 8+ is encouraged to sign up, and in the next few years I'm planning to expand a little further each year.

P.S. I know this topic is borderline "temperate fruit trees" but still seems like avocado discussion is usually on the tropical side of this forum, so that's where I'm posting it.

Tropical Fruit Discussion / Not getting emails
« on: October 27, 2022, 04:54:12 PM »
I have not gotten any email from the forum since signing up for this new account, and I have notifications set up. I never even got an email asking me to confirm my email address. Is the forum having mail server problems?

Greetings! I'm in search of either seeds or scions of any Mexican-race avocados (named cultivars or unnamed trees with anise scented leaves). I can trade scions of varieties I already have or pay for them, your choice.

I want seeds of any variety, including ones I already have, but obviously only scionwood from other ones. I would want the scions starting in late February or March, when my greenhouse trees start waking up, but that is flexible and I can bench graft indoors in a pinch if you need to send sooner.

Here's what I have currently, the ones that are bold are large enough to cut this winter or early next spring, the rest are recent grafts or have been cut a lot already and can't be cut until later next year at the earliest:


Brazos Belle

Duke (from the Oroville train station)

Del Rio


Jade (a backyard tree from Gainesville, FL)


Linh (backyard tree from northern CA)

Long South Gate (a backyard tree from Los Angeles area)



"Not Mexicola" (from an Etsy seller who collected scions from a tree in a public park in CA with fruit similar to Mexicola)


Rincon Valley (street tree near Santa Rosa, might be Mexicola)




Walter Hole

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