Isoetes andina thrives in consistently moist to submerged conditions. For emergent plants, maintain a waterlogged substrate, ensuring the soil is always saturated. Submerged plants should be kept fully underwater.

Avoid letting the substrate dry out at any point, as this can quickly stress or kill the plant.

Pruning is generally not required for Isoetes andina unless removing dead or damaged leaves. Trim away any brown or decaying foliage at the base of the plant using clean scissors.

This helps maintain plant health and appearance without significantly impacting growth.

Propagation is primarily achieved through the division of established plants or via spores. Mature plants may naturally produce offsets that can be carefully separated.

Spore propagation is possible but requires specific conditions and patience, often undertaken by experienced aquarists.

Repotting is infrequently needed for Isoetes andina. If it outgrows its container or the substrate becomes depleted, gently transplant it into a larger pot with nutrient-rich aquatic soil.

Ensure the roots are not damaged during the process. Avoid disturbing the plant unnecessarily.