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Wanting huge houseplants

Hello!
I’ve been reading through a lot of discussions about repotting plants and why you shouldn’t size up the pots too much.

It seems that most people are against using a pot that’s too big because the plant will get bigger. I think the assumption is that most people want to keep their houseplants the same size and are only repotting annually for their health.

However, for me that’s not the case. I bought a number of plants very small so I could grow them over time and decide where to stop once they get big enough.

I’ve had them for a year now and they’ve all seen substantial growth but are still in very small pots. Actually had to repot a few of them already to separate out the growth, but I didn’t size up the pots yet.

Most of the advice recommends only going up by about an inch each time but I’m very impatient. I just want to know if I can push the size a bit further than is generally recommend without harming my plants, as I’m hoping they’ll eventually get bigger anyway. If they expend their energy into root growth for the next year and don’t show much for it up top to start with I’m Ok with that as long as they eventually start growing once the roots fill out the larger pot. Is that what will happen?

I’m very new to growing plants I’m afraid. I’ve always bought them already big previously so this is an area I am confused about and can’t seem to find someone explaining if it’s OK if your aim in the long term is the growth of your plant.

Also I know that the soil can get damper in larger pots so I’m going to try to combat this by adding rocks. 

The kind of plants I have are:

Garden croton
zanzibar gem
Heart leaf philodendron 
Corn plant
Heart of jesus
Dumbcane
cat palm
Snake plant
golden pothos
Kris-plant
Dwarf umbrella tree
Peace lily
Corn plant 

Posts

  • KT53KT53 Posts: 9,016
    It seems counter intuitive, but potting on into too large a pot can actually end up reducing the growth rate of plants. 
  • JennyJJennyJ Posts: 10,576
    Don't bother adding rocks. It would reduce the amount of compost in the pot, but it wold be better to just use a not-so-big pot and move the plant on when it's filled that one.
    Doncaster, South Yorkshire. Soil type: sandy, well-drained
  • Pete.8Pete.8 Posts: 11,340
    I do agree that it hardly seems worth the effort to repot a plant in a pot 1" wider - I always go bigger, but not too much.
    The best way is to look at the roots - if they quickly fill a pot after repotting, go a couple of sizes larger next time.
    If it takes a while for the plant to fill a bigger pot, then next time use a pot that's just a bit larger.
    I think Monty explained it well a while ago - when you take the plant out of the pot, if you can see more roots than compost, then it needs repotting.

    I've used seaweed extract on my foliage houseplants for the last few years - about 1/2 the suggested strength and they are all doing very well. I always use rainwater too.

    Billericay - Essex

    Knowledge is knowing that a tomato is a fruit.
    Wisdom is not putting it in a fruit salad.
  • Pete.8 said:

    I've used seaweed extract on my foliage houseplants for the last few years - about 1/2 the suggested strength and they are all doing very well. I always use rainwater too.
    Thank you for the advice! A few of them have roots that are definitely filling their current pots so I’ll go up 2 sizes for them and consider keeping the others only one size bigger.
    Also I didn’t know about seaweed extract so I’m going to give that a go after repotting!
  • Blue OnionBlue Onion Posts: 2,995
    Some of those plants actually prefer a smaller step-up pot for the best performance.  For example, the peace Lilly blooms under stress due to being slightly root bound.  The snake plants produce off-sets (babies) due to the stress of being root bound.  Etc.  
    Some of the others will be just fine in a pot several steps larger than their current pot.  I root cuttings off pathos and philodendron in water and then pot them directly into the pot they will spend the next several years in.  
    I think if you focus on getting the soil and watering correct, then the size step-up isn't a huge deal for some of the plants you have.  Some are just naturally very slow growing, like the corn plant, so it’s best to research each plant individually to find out their ideal conditions.  
    Utah, USA.
  • A lot of good advice here. I feel like I have an idea of what to aim for now and I’ll try to make it more individual to each plant.
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