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[Radium]

Mr.Pedro (T.pachanoi) has just sprouted a new head which is growing rapidly into a strong stud fella.
The only thing that worries me is the dark green algae growing on the pot walls down to the very bottom of the pot.
The pot is transparent and I can easily see through it.
I like the transparency about pots, because it let's you clearly tell if a plant is going root bound, but at the expense of the algae horde knocking on your door because of the light going through the pot.

Is there any possible harm from algae to Mr.Pedro?
Just tell me and I will spray the pot with black paint.

Or is it harmless for the cacti? or perhaps even a mutual beneficial relationship between them?

[BubbleCat]

algea wont trouble your plants, usually. They only grow exactly there where they fin light, no where else. Just consider that they use some nutrients, not much tho.

1 Like Radium likes this.

[happyconcacti]

I'm not sure about your exact situation. With cacti seedlings, when algae comes it means the fungus gnats are soon to follow.

1 Like BubbleCat likes this.

[BubbleCat]

that sounds true, algea are shy of arid conditions

[Bach]

I don't see how it would hurt the pedro, but if it bothers you just nest the transparent pot inside an opaque one. That way you can still pull the pot and inspect the roots.

3 Likes happyconcacti, Radium and Rife like this.

[Radium]

I don't see how it would hurt the pedro, but if it bothers you just nest the trasparent pot inside an opaque one. That way you can still pull the pot and inspect the roots.

Nice solution, or just nest it inside a cardboard roll, to save the opaque pots for planting.

[Rife]

I used 16oz clear deli cups (super cheap) with PVC couplings to lift them off the ground + provide darkness for the roots. Pretty nice with canna seedlings to know exactly when to transplant.

1 Like Radium likes this.