Propagation Environment: Open growing facility.
Container type and volume: Pinus palustris are very sensitive to competition and should be grown at a cell density of less than 540 cell/m2 to achieve good seedling quality. The Multipot 3/96 has atop opening of 3.8 cm and is 12 cm deep. The cavities are 98cm3 in volume with a cell density of 441/m2.
Growing medium: 50% spaghnum peat and 50% #2 grade vermiculite. The pH of the medium may need to be adjusted with lime to the level of 5.0. A slow release fertilizer, such as Osmocote 18-6-12, is incorporated into the medium at the rate of 6 lbs/cu. yard. Fill cavities and tamp lightly to remove air pockets. Brush media to make room for seed placement.
Sowing Date: May 1st
Sowing Technique: Sow 1 or 2 seeds per cavity depending on seed viability. These should be thinned to 1 seedling per cell before seed coats are shed. Oversowing or thinning is preferred to transplanting germinants.