How to revive an unhealthy citrus tree | DIY Garden Projects | Gardening Australia
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- Опубліковано 5 чер 2023
- Josh helps bring a struggling potted cumquat back to health by performing some tree triage. Subscribe 🔔 ab.co/GA-subscribe
Citrus trees are a garden staple for many Australians, but they’re also top of the list for causing grower angst - yellowing leaves, pests and diseases - they get the lot
Josh helps out his friends Josie and Xavier whose citrus tree is looking sick.
Their eight-year-old ‘Nagami’ Cumquat (Citrus cv.) was a gift from Josie’s grandmother and was the first tree they planted in their new Perth garden, so it has lots of sentimental value.
However, after being initially healthy, they’ve noticed over the past two years it’s become more susceptible to pests and is losing leaves, dropping fruit and generally looking pale and unwell.
It’s been growing in a half-wine-barrel for about 6 years and gets fed with compost three times a year, in spring, summer, and autumn, plus liquid fertiliser in between.
Josh guesses that the plant may either be root-bound, that the potting mix is simply old and stale, or that the drainage may be impeded. Or all three!
Repotting is the order of the day:
- The mulch is removed and put aside for later.
- Caster wheels make it easy to move to the centre of the deck and onto a tarp to make cleaning up easier afterwards. The protect the pot with blocks of foam as they lay it on its side to remove the tree.
- Under the pot, the drainage holes are a bit blocked but not too bad.
- After scraping away some of the soil, the root ball eventually comes free from the pot. It is slightly root-bound but, more importantly, the organic matter in the pot has broken down, forming a dense compacted media that restricts air pockets or drainage. This is removed and the root ball is pruned back by about a third, while the pot is cleaned.
- When repotting, the level of new mix is measured in the pot to ensure the root ball sits at the right level when replaced. New mix is then backfilled around the roots, watering in and rocking the root ball as they go to prevent air pockets from forming.
- The canopy is then reduced by about 20% to prevent the foliage from drooping as the new roots regrow, and to encourage new growth.
- Mulch is replaced, and a top dressing of organic feed is applied followed by a dose of seaweed solution to help settle it back in.
Featured Plant:
CUMQUAT ‘NAGAMI’ - Citrus cv.
Filmed on Whadjuk Country | Perth, WA
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The easy extraction from the barrel is miraculous. Only in the movies
Ive been growing citrus for years, and nothing beats epsom salts! 1 week after giving epsom salts you'll see new leaves everywhere. once every 2 months is great. If your fruits are dropping early, it is usually a lack of phosphorus and potassium.
Yes, I agree. I am doing the same. I give Epson salt and new leaves develop everywhere within 2 weeks. My citrus trees were covered with scale. So, I prayed bio oil 100 ml/10 litre of water,and followed up once after 2 weeks again. All scale died. Not even one on my cirrus trees any more. I also had a big problem with citrus leaf miner. After spraying bio oil, no leaf miners any more and my citrus trees look beautiful.
I am from sri lanka .garden and landscape related to the jobs i am currently doing the job with 15 years of experience i am happy to meet people like you
Give that barrel a medal!
I have a Nagami Cumquat which is 25 years old in a huge glaze pot. It gets looked after betted than a dog, its give me a bucket of fruit every year,
That's so uncanny my Gran had a cumquat tree and whenever I see one I think of her - great segment Josh thank you!
Same here. I have one in my yard in her honor
Seems like the right diagnosis. Great work team.
Thanks for watching!
Entertaining and very informative and great acting Josie and Xavier ! Well done 'Dr.' Josh!
Glad you enjoyed it!
Selamat sore sahabatku terimakasih banyak perkongsian nya ya
Well done Josh.
Loved this. I have just bought my first citrus tree, a mandarin ao I need to learn a lot.
Please keep your great videos coming. Thank you all.❤
Thank you! Will do!
Thank you! I needed this for my oranges!
You're so welcome!
@@GardeningAustralia :)
Fantastic content
Glad you enjoyed it!
Just what I needed to know time to increase my pot size and fresh soil.
Thanks for watching!
How about using potting media that doesn’t go “gluggy” in the first place. Coarse River Sand, Pumice, Perlite for example. Peat Moss can also be used, maybe 40% for water retention.
Coarse river sand on its own works wonders if you can manage the weight.
For anyone interested look up “what is perfect soil” by Gary’s best gardening on UA-cam…. You’ll understand why the potting media looked like sewage and needed to be replaced, and why the same thing will happen because they repotted with the same mix.
Explanation on how to root prune please 😊
Very informative ❤
Glad it was helpful! Thanks for watching 🌱
Thank you so much for the lesson I got a lemon tree in a big but i just realise it has one big not can it be cut the branch of wen il prune it thank you 👍🏻🌈💖🇦🇺🐨🦘
That's not rootbound! The type of soil mix is the problem.
useful information if you can get past the cheesiness
❤💐
The scale was not addressed. 😢
Because the plant was stressed its resistance to pests and diseases was lowered. This is not uncommon for a wide variety of plants/trees. The first action to stop the scale is to improve the vigour of the plant - the repotting process show here in the video will take care of that. Second is to prune and open up the canopy as adding air and light can help reduce scale - again the repotting takes care of this. Finally you can spray what's left with white oil - follow the manufacturer's instructions. Scale can hide so look underneath leaves and along stems. Have a great day.
Thank you for the response. I will look for white oil.
Uhhh sorry to be the bearer of bad news "doc" but you got the prognosis wrong, that tree was just overwatered which is why the soil was gluggy. The procedure was unnecessary. Simply don't overwater container citrus - especially in colder weather.
What are your credentials?
A citrus in the same pot for 6 years - repotting was the absolute best advice. Refreshes the soil and the pruning (root & canopy) will encourage strong new growth and improve resistance to pests and disease. The repotting has also allowed for the drainage holes to be cleaned out. Now with nice fresh open soil the risk of any overwatering is reduced as the water can escape the pot and get away from the roots. Just my 5 cents.