
My first lemon eucalyptus; it grew to over 2 meters tall
I’m not new to growing the lemon eucalyptus.
My first try at growing this plant was when someone in the local gardening forum conducted a small mass order from a lady who was growing this plant locally. When I received it then, it was only about 15cm tall at the most. Somehow, I managed to grow it until it reached about two meters before I had to prune it down.
This plant is one of the most unfussy and unassuming plants I’ve grown. Give it a moderately moist soil mixture, about four hours of direct sunlight a day, and daily watering, and it’d grow and grow and grow happily for you (maybe it’d grow so happily until one doesn’t know how to handle it as a tree).

The callousing of the stalk to become a trunk; even with hard pruning, the plant will continue to grow
I’d placed a thick wooden stake to support my first plant, and tied cable twists and twine around the stalk to support the then-young plant. I promptly forgot all about the cable twists and twine, and as the plant grew, the stalk thickened, and the twists and twine cut deeply into the growing stalk, callousing the plant in a supposed-bonsai technique (my bonsai expert friend told me about this), and thickening the stalk until it became a small trunk of about an inch thick. I think that through this mistake, my plant’s trunk was the only one amongst all the people who had joined the mass order which had grown so thick.
The plant was sturdy, and very useful when one needed some citrusy-soothing scent, or apparently in an attempt to repel mosquitoes.
However, there was one issue: after about a year or so, my lemon eucalyptus plant started dying. It wasn’t the hard surface pruning my dad had given it twice. But the leaves and stalks gradually turned brown and died, one by one, until I had to kill the whole plant.

My current plants grown from seeds
What went wrong? I checked the trunk – it was sturdy and very hard, so it definitely wasn’t rot; the leaves were browning in the sequence from new growth to old growth, before completely dying off; sunlight shouldn’t be the problem as it had gone through two cycles of the typical climate and sun-shifts here.
I decided to Google a little, and came upon this blog post at The Herb Gardener. Then I realized – my plant’s roots had effectively strangled themselves in the very large pot (but still a pot, nonetheless) and committed suicide through a lack of my own knowledge.
So, I’ve learnt that the lemon eucalyptus is a little like the mint plants, which do well with a yearly root pruning.
Some plants take well to being pot-bound; others don’t – the roots grow so compacted the plant strangles itself to death. The lemon eucalyptus is one of those which definitely requires some maintenance on its roots.

The plant and leaves grow readily and easily
Currently, I’ve grown two small plants from seeds, and they are in a small pot. I don’t intend to really upsize the pot, but from now on, I’ll remember to give it a root-cut now and then.
Care: A relatively moist soil mix
Fertilizing: Does well with frequent weak fertilizing
Sunlight: Full sun preferable, but it will tolerate some bright shade
Propagation: By seeds
Special care: Do yearly root pruning

Jan 13, 2011 @ 21:25:32
Hello! I hve been following your blog for a while now! Just wanted to know what kind of soil do you use? I have been trying to grow lemon balm seeds, to no avail. I don’t have much luck with seeds or with repotting of plants…i figured it was the type of soil that I use….pretty much those cheap potting mix where u can get at the supermarkets!
Jan 14, 2011 @ 09:03:54
Hello. I use a mixture of volcanic sand (pumice; gravelly-looking thingies) for drainage, and just normal $1.50 black soil from World Farm. All my edible plants get the same mixture in different ratios according to their need.
The best way to germinate seeds (for me at least) is to put a layer of soil (or vermiculite, or tissue paper) in a clear plastic takeaway container. Moisten the whole environment, and then surface sow the seeds without covering them up with soil. Then close the container and leave it in a place with bright shade (or on top of your fridge, to see if the warmth can aid germination).
I believe the lemon balm seeds can be sprouted this way. But if you got the seeds from a source which has low germination rates on the whole, then most of the time, whatever you do isn’t going to help very much.
Why not buy a lemon balm plant instead? =)
Jan 14, 2011 @ 16:49:49
hahaha!:)
Let me answer your last question first. Yes, I was sooo tempted to buy a pot of lemon balm when I saw one (this was after 2 batches of unsuccessful seed sowing)….but I resisted because I wanted to try grow something from seeds…and the lemon balm seeds were the first seeds packets I ever bought. Bought it at HomeFix.
I did like when u said…soil+ vermiculite mix in a container….the seeds did germinate, small tiny leaves BUT it never grew bigger…the leaves would turn a bit soggy, and then eventually rotted away. I tried a second batch and the same happened. Am at my third batch now, after which I would run out of seeds.
However, I used this ang moh soil: Arthur Bower’s Seeds and Cuttings soil which I purchase at Far East Flora. It was so expensive but it doesn’t seem to work!! The soil it probably too wet or its not suitable for our climate.
I will try out the volcanic sand though! tks!
Jan 14, 2011 @ 17:09:16
I had a reader of another gardening blog email to ask about her lemon balm seeds not germinating as well. I suggested my clear plastic container method, but it kind of turned out that it was a problem with the seeds she’d bought (Horti), not really her germination method.
I’ve a friend who specializes in growing lavenders, who uses the Arthur Bower’s mix, and she (and another friend) claims that it is an extremely well-draining mixture. I personally haven’t used it, so I’m not sure of it.
But, from your description, it might be that your seedlings are suffering from too much moisture. Instead of closing the container totally, you can leave about a 1cm gap and use a rubber band to secure the lid, so that there will still be some ventilation. I hope this will work for you. =)
Jan 15, 2011 @ 21:59:17
Gosh Sky …. so heart pain to have that big lemon eucalyptus die on you.,
Lucky got seeds to contimue growing it.
Jan 15, 2011 @ 22:46:59
Hey Chawan,
Yeah lor. It was like…oh no. It died! =( But ah well, it’s a learning experience. And now I know what to do. =)