Aloe lineata can be propagated by cuttings or truncheons, however, this is not the popular or recommended method because then it will only occasionally produce branched stems. So it is best to propagate this aloe with seeds. The best time to sow the seeds is during the warmer months of the year and always try and use fresh seeds. Sow in coarse river sand and then cover with a layer of sand about 2mm deep. Keep the medium moist and be careful not to sow the seeds too deeply as this may cause rot. The seeds will germinate in about two or three weeks. Treat your young seedlings to a fungicide for its protection.
You can transplant once they are 2 or 3 cm into bigger containers with soil that consists of I part well-rotted compost and two parts river sand.