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Topics - Tropicaltoba

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Hello to all the greenhouse growers out there. I was wondering how you go about controlling your vapor pressure deficit. I canít find much on the market for the hobby greenhouse. I have a jimmy rigged system that is based off different 3 different temperature intervals each with their own humidity set points. It works quite well except for when I have to spray things down for pests in the late winter. I was curious what everyone else does.

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Tropical Fruit Discussion / Bug identification?
« on: August 15, 2023, 01:44:44 PM »
I was hoping people could confirm if this was a mealybug destroyer larvae. I live in Canada in the prairies and took my plants out of my greenhouse cause they were infested with mealy bugs. About 6 weeks later I see a couple of these moving very quickly along a plant. I am curious how it would have gotten here, could it be something else?


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Temperate Fruit Discussion / Shade tolerant berries?
« on: July 16, 2023, 12:34:54 PM »
I have increasing shade in my backyard, I used to be able to grow grapes but now there is only vegetative growth. I transplanted gooseberries against a fence that only gets evening sun. They produced a dozen berries last year but none this year. Should I try something else that is shade tolerant like thimbelberries or black currants (i have both in other parts of my yard) or do u think itís futile? Note I had the trees thinned last year and I donít think it did anything.

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Temperate Fruit Discussion / Loquat blooming in summer
« on: July 16, 2023, 12:29:58 PM »
So I recently had to move all my plants out of my greenhouse cause I was away on a holiday and fighting a mealey bug infestation. My greenhouse was running form 70-86 deg at the time. We had a recent cold spell down to mid 50ís and my 3 loquats all bloomed for the first time. Do I keep these? The same thing happened with my mangos last year (Pickering) and the fruit was really good (from what I can tell living in Canada).




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I had a nectarine in a pot that may have not had enough chill hours this winter. The tree still hasnít done anything but a scratch test shows itís still green. Any tricks to forcing it to leaf out or is it just done?

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Hey everyone Iíve been growing purple passionfruit for about 6 years in a 35 gallon pot. I know commercially they often replace the vines every 3 years in commercial production. It had been productive (2 crops per year) and then after being away for a week (I had watered it) looked like this and has not recovered. Fruit wrinkles, yellow limp leaves.  Does anyone know if this is how the vines die when they get too old?


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Tropical Fruit Discussion / Rambutan leaves full of holes?
« on: April 12, 2023, 01:30:03 PM »
I was wondering if anyone could identify the source of damage of my rambutan leaves? Iíve never seen any bugs on the plant but they are completely full of holes.


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Temperate Fruit Discussion / How far North has someone grown a pawpaw?
« on: April 10, 2023, 09:01:29 PM »
Iím trying to find out how far North you can successfully grow a paw paw fruit? Hardiness is one thing but it think they also need many frost free days that are hot. Iíve been able to keep a small tree alive in zone 3 for one winter but flowering 2 trees and getting fruit is another thing all together. Iím looking for some success stories.

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Hey everyone, I started a new thread after a comment from Daintree (I think it was DaintreeÖ I went out and enjoyed too many refreshmentz). In peopleís experience which tropical fruit trees can and canít handle root pruning well?

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Tropical Fruit Discussion / Visiting Cuba, good places to checkout?
« on: March 24, 2023, 09:48:58 AM »
Does anyone know of good places to check out fruits or botanical gardens in Cuba? Iím arriving there today.

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Hey everyone, Iíve been struggling for a while to grow container tangerines in my (tiny)greenhouse. I love tangelos, and have been growing a ďMinneloaĒ for about 5 years. Despite it being very healthy, It struggles to hold fruit, and the fruit that it has produced has been less than impressive. I also picked up a 4í sugarbelle 18 mo ago, and am currently (almost finished) resolving a chlorosis problem that has probably arisen as it transitioned from synthetic to organic fertilizers over the past year.

For those of you with greener thumbs or better climates, which plant do you prefer in terms of health productivity and taste? We donít have HLB in canada so that isnít a factor. Also if a citrus has been unproductive but looks healthy, do you think is worthwhile to graft onto it?

Thanks Al,

Minneola



Sugarbelle




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Hey everyone, my 4 season cold climate greenhouse uses a dessicant dehumidifier in the winter to both minimize condensation and also provide some heat for when itís really cold (-40). The issue is the dry air it produces isnít great f for some plants. My meyer lemon dropped almost all the leaves that were in the area where the dehumidifier blows.



Does anyone have suggestions for plants that could handle dry warm air in the winter?

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Hey everyone, I have limited space in my greenhouse and just got my first fruit of my baboon lemon. It was a nice size and looked good and was looking forward to making a couple of cocktails for myself and a friend, but was very embarrassed with the amount of juice I got from it, less than a tablespoon.

What do I do? Will it get better as the tree ages, or did it need more water etc. Or do I get rid of it in an attempt to save my reputation as a tropical cocktail connoisseur?

Here is whatís left after I crushed it trying to salvage my cocktail.


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Tropical Fruit Buy, Sell & Trade / Anybody trading/selling in Canada?
« on: March 12, 2023, 04:32:05 PM »
Due to some import bans some of the inconsistencies with bringing plant material across from the U.S. I was wondering if anybody sells/trades plants and scions in Canada?

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Tropical Fruit Discussion / Cause of new Longan growth drying up and dying?
« on: February 10, 2023, 07:26:25 PM »
Does anyone know the cause of the new tips of Longan growth to dry up and die? Iím
Growing it in a heated greenhouse, rh 60-70, no drafts goo light 65-80F for most of winter. The new rips are so delicate Iím worried about spraying with water if the culprit is spider mites. Any ideas?


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Temperate Fruit Discussion / Best Haskap/honeyberry varieties?
« on: February 04, 2023, 05:28:42 PM »
Has anyone tried Japanese honeyberry/haskap varieties? I Have several haskaps from the university of Saskatchewan breeding program(tundra, aurora, boreal etc). I was wondering if anyone has tried Japanese cultivars specifically the ďBlueĒ series. Has anyone tried these? Iím wondering if they are worth getting.

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I am long time enthusiastic yet relatively ineffective citrus grower in a 4 season cold climate greenhouse. I usually post on the tropical side. I was wondering if anyone has experience with Cryptolaemus montrouzieri for mealey bug and scale control in an enclosed environment? I recently found mealey bugs in my gh for the first time in 6 years (not an infestation) but have been battling soft brown scale from the start (only currently out of control on mango which I clean off 2x/week). The mealy bug destroyers are kinda pricey and was wondering if it would be possible for them to achieve a stable population? Note: Iím not looking to eradicate the mealey and soft scale, just keep their populations down.

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Tropical Fruit Discussion / Bees in greenhouse? What have u tried?
« on: February 01, 2023, 05:11:25 PM »
Hello all,
I am curious about what peoples experience has been with bees in their greenhouse? I have a year round greenhouse and try to provide 12 months of flowering species for some hoverflies and predatory wasps that help with my aphids. They (hoverflies) are very selective pollinators ( citrus and Longan only that I can tell) and I need something to help me with my passion fruit trellis which is almost out of reach.

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I am finally having some success (not killing them within 1 year) with container mangos. I was wondering that if you keep your mango warm during the winter, and it doesnít get any chill time, will that make it put on extra growth cause itís not spending energy on flowers?

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So I realize that in trying to grow fungus free organic mangos it is impossible to get the humidity/temp high enough for ultra tropicals like Langsat, mangosteen, and pulsan. So Iím trying an experiment so see if I can make a cheap mini greenhouse inside my already small greenhouse. With the goal of always have rh at 80% and temps no lower than 25C.

Iíve seen similar designs for sale but with their small
Air volume (15 cubic feet) and poor ventilation I suspect they would normally overheat like crazy outside in the sun. With my greenhouse being ďclimate controlledĒ 15-32C and 50-75%rh and 30% loss of light transmission. Iím gonna make mine a little bigger with a volume of 36cubic feet

Has anyone tried this in the past? And if not do u think it will work?


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Iíve had fruiting feijoias in containers in a heated greenhouse for about 3 years now. I have 3 different cultivars and they seem to flower in succession, so the first to flower (nikita) only ever had 2-6 fruit as the other plants would just start to flower after the blooms were ending.

My greenhouse maxes out at around 86f (32c) in the summer, and against the north window (where they sit) goes down to 7-10c during jan/Feb.

I had a friends parents visiting from New Zealand and kinda laughed at me when I showed them my feijoia fruit as compared to theirs back home mine were pretty small and dry. All the people I know from new Zealand (maybe 8 at most) says that back home they are the best fruit ever. I was wondering if anyone has had success growing large volumes of amazing feijoias, and what conditions/cultivars were needed. ::)

I was curious if anyone ha

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Iím curious if anyone else is making their own fertilizers for container plants? Iíve been using old leaves and coffee grounds in a worm bin and also have been trying some experiments with bokashi composting for fruit and high nitrogen wastes. I find the solids products work well for my large containerized that have worms in them, but Iím not sure what to do with all the leachates? Iím hoping to use them as a liquid fertilizer for my smaller plants but have concerns about toxicity. I was wondering if others have tried similar things?

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