During stratification (which can be done outside around January for us in the Bay Area, CA) I usually put seedling pots/trays outside and cover them with shade cloth or trash bags. This year I decided to simply build a flimsy hoophouse over one of my tray tables and let the seeds stratify in there. This would prevent them from getting rained on.
Because they were still exposed to light though, all the mosses and other things got a decent head start. I'm not so worried about the normal moss, but there is a new strange growth on many of the pots. I do spray on the Safer brand fungicide occasionally. It almost looks like some kind of mineral build up. However, it has definitely spread/grown, and is not in every pot (some pots are just green and mossy, and some have this stuff on it). I'm watering with rain water, and the ppm in the tray is something like 13. I'm concerned that this stuff is going to effect my germination rates this year. Any thoughts on what it could be and if it's harmful?
David-this is an excellent post, been meaning to take photos like that. Those are salts and probably minerals crystallizing on the surface of the peat, and if your rain water is 13ppm, it's from your peat source! Are you bottom watering? Take a sample of the peat moss you used for those particular pots with "symptoms", squeeze the water out. Test that water, very likely to be over 120ppm.
Notice the burn marks on new growth in the last picture, that's called phytotoxicity: the dissolved solids in the peat is too high, so it's causing the leaves to burn.
That peat technically can still be used, but it really has to be flushed with RO or rain water many times before it's safe to use. If you divide in the winter and let the rain flush all that crap out (ie. don't let them sit in trays during the winter, by spring that soil is probably safe. However, It's better to find higher quality peat than mess with that stuff.
Last Edit: Apr 22, 2020 10:26:27 GMT -5 by meizzwang
Post by greenthumb on Apr 24, 2020 10:59:58 GMT -5
Mike- you were totally right. I decided to test the peat two different ways, and compare the "mineral buildup" pots with some peat/perlite mix I recently made up:
1) Squeeze water out of the moss Mineral Buildup peat: hovering aroun 200 ppm Current peat: around 20 ppm
2) 1 cup of soil, 2 cups of water, mix it up and then let it settle Mineral Buildup peat: 130ppm Current peat: 35 ppm
As you can see, the results aren't perfectly stable, but the peat/perlite mix that has been exhibiting those growths definitely has the much higher ppm. The thing is, both my current peat and the mineral-y peat are from the same brand, same type of bale! I will definitely have to start testing it, as it's clearly inconsistent.
sanguinearocks101: What are good plants to make hybrids with S. luecophylla with? Im looking for dark colors.
Sept 10, 2020 18:46:52 GMT -5
adaetz100: Sarracenia purpurea tends to add a lot of red/purple to its offspring, but there are some lovely dark red flava x leucophylla crosses too. Look up 'Royal Ruby' if you're not familiar with it already--it's a natural flava x leuco hybrid
Sept 22, 2020 20:15:04 GMT -5
sarrseens: How about $50
Oct 3, 2020 10:35:54 GMT -5