We did not count on to see any distinction in germination charge, so when the seeds in peat sprouted extra slowly we have been shocked. Within the time allowed (about 4 days), all the things besides the peat had a 100% germination charge; the peat had sprouted round 60%. The most definitely rationalization is that peat is a bit of too moist for seed-starting; media that is too moist can decelerate or stop germination altogether. Our 50/50 combine, the coir, and the Jiffy combine all germinated identically and in the identical timeframe. For the reason that seed-starting combine would not present any vitamins, we did not see any distinction in seedling shade or development charge.
The Jiffy combine held extra water than peat, however there was little or no vermiculite seen within the combine, so the Jiffy combine might be largely a mix of peat and coir, like our DIY model. Coir could be our alternative based mostly on holding moisture, adopted by Jiffy combine, then the peat/coir combo. The one distinction in crumb we observed was that the Jiffy combine shrank rather a lot when moist, dropping possibly 5/8-inch on the prime. The opposite media remained suitably fluffy.
Coir is surprisingly costly in comparison with peat, however the 50/50 combo got here in at about 60% of the Jiffy Combine’s worth. Given the portions we use, we’ll persist with 50/50 and coir. However the Jiffy combine carried out nicely, so we would not hesitate to make use of it for a simply tray or two of seedlings,