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Large Trees Brought Indoors All Dying! Please Help Me Save Them!

Hello,

We've just finished a new build house. It has high ceilings and (despite being in Ireland which tends to be dull for a lot of the year) should be reasonably bright as it's got windows all along the side facing south (and some north facing ones also. I really like trees and so was keen on the idea of growing some trees indoors in large pots as the rooms were big enough to take them. The problem is all of the trees (to varying degrees) are shedding their leaves and look to be dying!

The trees:

(1) Citrus Kumquat Nagami:

How it looked when it arrived 2 weeks ago:



How it looks now:



Just to say this does not do it justice to how much worse it looks, it looks much worse in real life than in the picture.

(2) Scots Pine:



Holding up best of the 3 trees but the needles are turning brown quite rapidly.


(3) Olive Tree:



Again does not look that bad in pic and leaves mostly still green but has lost a lot of them and is losing more rapidly.

Just to say we brought some smaller ones in also and the same thing happened:

Here's one that was in the house for a few weeks:



And here's one that has stayed outside all of the time for comparison:
:

So as you can see none of them are doing well indoors:

I've got multiple probes to check the soil moisture levels, annoyingly the symptoms of over/underwatering them seems similar but as per probes they are ok for moisture.

I tried giving them all specific plant feeds (citrus/pine/olive) but that did nothing. As the Citrus was fading fast I tried lightly spraying leaves with Epsom Salts + water, no change.

I've also brought a grow light for the Citrus as I thought it needed more light. Nothing is working and I may well be making things worse.

The indoor temperature is about a stable 20 degrees, it's a passive house so should stay pretty stable all year around. They are close to the windows but not getting direct sun on them when it's sunny there's an overhang all along the south facing roof. You can see what the room looks like here, it's a very dull day here today:






My concern is that they will all slowly die. There's lots of stuff online saying you can grow olive trees etc indoors but I wonder are those US/Australia based where they get a lot more sunlight than here. Do people successfully grow trees indoors in the UK/Ireland?

My options seem to be:

(1) Get the trees outside and plant them in the garden now before it's too late and they die. The olive and pine I'd imagine will be fine. The citrus says on the label it's hardy down to -5 degrees which should be fine for Ireland (we're close to coast so it tends to rarely be frosty or that cold). I also worry the longer I leave it the more of a shock it would be to go from warm house to cold garden. 

The plan would then be to maybe try and grow some big green plants (areca palm, Monstera or similar) which I think are likely to do better indoors. I'd like some really big greenery indoors but ideally somthing that does not require constant care like the trees seem to. Any suggestions on what would work well would be great.

(2) Try and save the trees and keep them indoors. I'm not sure how feasible this is. I'm spending huge amounts of time/effort on them, my wife says I'm nuts and should worry about the 100 other things that need fixing in the house so this is perhaps not the best plan.


Anyway, sorry for the very long post and any advice would be much appreciated. I don't have a good gardener to advise me here so thought I'd turn to some online expertise for help!

Thanks in advance!

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Posts

  • fidgetbonesfidgetbones Posts: 17,618
    The air is too dry inside for citrus. Scots pine  thrive on cold so should be outdoors all the time. 
     If you want indoor plants, try the indoor plant section.
  • ViewAheadViewAhead Posts: 866
    They do look a bit sorry for themselves.  I think they are going to need to be outside and I would relocate them soonish, while the outside and inside temps are not too different.  Maybe open the doors and keep them there for a few hrs, then move them outside but keep them alongside the house for a few days as they acclimatise. 
  • Thanks very much for the replies guys, I really appreciate them. I'll get them outside as soon as possible. Will have to pay the guys I paid 2 weeks ago to lug them into the house to lug them back out again! Will post in the indoor plant section to get some advice on large green plants/trees to replace them.
  • fidgetbonesfidgetbones Posts: 17,618
    Can I suggest a sack truck. It will save you money in the long run.
  • JennyJJennyJ Posts: 10,576
    It looks as if they may also not have drainage holes in the pots - they aren't standing in saucers and I can't see inner pots. Without drainage there might be a buildup of stagnant water in the bottom of the pots, although two weeks doesn't seem long for the effects to be showing so dramatically so I think light levels is the main problem, and maybe dry air. 
    As you've found, feeding plants that are already struggling doesn't help.
    You'd be better trying things more commonly grown as houseplants, because they are usually tropical/jungle plants which cope better with low light levels indoors.  Even if it looks right to us, as far as plants are concerned the level of light is far lower than outside. Make sure there's enough humidity though - our homes often have very dry air - what's comfortable for us isn't humid enough for many plants. Things like Schefflera, Monstera and Ficus elastica aren't too fussy. ZZ plant and sanseveria are probably about the easiest. Calathea are attractive but notoriously picky. Whatever you choose, don't overwater them - with a few exceptions, the best way to water houseplants is allow to dry out between waterings down to the depth of your second knuckle (deeper if they're really big pots), then water until it comes out of the drainage holes and pour away the excess from the saucer/outer pot after a few minutes, but you might have to take a more cautious approach if you want plants that are so big that you can't easily move them.

    Doncaster, South Yorkshire. Soil type: sandy, well-drained
  • ViewAheadViewAhead Posts: 866
    I read once that if a plant is more than a metre away from a window, it is effectively in the dark.  Tropical things can cope as their natural habitat is under a dense canopy of vegetation, of course. 
  • ObelixxObelixx Posts: 30,090
    edited October 2023
    I agree with everyone else that those trees are designed to be outdoors where they'll get the light and fresh air they need to thrive tho you'll need to shelter the olive and citrus from the coldest winter winds.  You should also consider giving the Scots Pine a greater depth of soil as it seems low in the pot with not a lot of room for the roots to grow.

    Have a look at ficus benjamina which makes a good indoor tree but does need regular misting indoors altho mine, after 40 years, is so big now it's easier to wheel it into the shower once a month to remove dust, freshen the foliage and give the pot a good soak.

    Another tree like plant is a multi-stemmed dracaena - several colour forms - and then there are cheese plants - monstera deliciosa which comes in green and variegated forms.  You can look up care info for all of these on the RHS website.

    Vendée - 20kms from Atlantic coast.
    "The price good men (and women) pay for indifference to public affairs is to be ruled by evil men (and women)."
    Plato
  • I get so angry when I see in interior magazines olive trees used as interior decor plants...they really won't do well without good access to light and proper ventilation. At least your three haven't deteriorated too much and will bounce back with no problems. In order to keep any large potted trees happy by definition the interior conditions they'd require to stay happy would make for a horrid environment for human habitation. 

    But with such a bright room you'll find tones of plants to work with. A large ficus bengalensis will look fantastic and be easy to care for. Or maybe a majestic Fishtail palm aka Caryota Mitis. 
    To Plant a Garden is to Believe in Tomorrow
  • CeresCeres Posts: 2,698
    A word of warning about big houseplants. Some of the jungly ones have a habit of dripping when they have just been watered (guttation) as any excess moisture is pushed out through the leaves during the hours of darkness. This can damage some floors and furniture surfaces so make sure to ask about this when you buy some houseplants for your lovely new home. Avoid banana plants if you can't take the deluge.
  • RedwingRedwing Posts: 1,511
    edited October 2023
    Hard lessons learned I think.  The Scots Pine I would plant in the ground outside where it will do well.  The Olive, keep it outside in a sheltered position in the winter and keep the pot dry and insulate in really cold weather. The citrus should be outside in the summer and in a cold greenhouse for the months late October to about March with no heat. 
    Based in Sussex, I garden to encourage as many birds to my garden as possible.
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