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Varieties: Some of the important varieties of poplar are Populus deltoides, G3, G48,D121, D61, D67, S7C8 and S7C15
Soil: Poplars will grow in any soil type but will thrive best in a reasonably drained soil of pH 5 to 7.5
Spacing: 3 feet Row-Row and 6 feet plant to plant spacing.
Planting season: Poplar planting should be done in May to early June or between early-November and mid-May.
Unrooted hardwood cuttings and bareroot stock should be planted when the soil is moist or when rain is expected.
Planting methods are critical to planting success. Planting unrooted hardwood cuttings can be done by hand or machine.
Cuttings must be planted upright.
Unrooted whips or poles should be planted at a depth of 2 to 3 feet.
Slow release fertilizers such as 14-14-10 Osmocote (or comparable product) should be used with auger plantings.
Diseases:
Wetwood, or Slime Flux
A bacterium (Erwinia nimipressuralis) takes hold in the heartwood and causes abnormally high sap pressure. F
The flux is sour-smelling and oozes down the side of tree, causing unsightly gray streaks when dried.
The wounds generally will not heal properly and the condition can persist for many years.
Canker and Dieback
Canker and dieback on poplars is caused by several different fungi.
Dark sunken cankers form where the fungus enters a tree through wounds or cracks.
These cankers can disrupt water and nutrient flow and, if it spreads to more than half of the diameter of the trunk, will probably kill the tree.
Pruning off infected branches and removing severely infected trees can slow or even prevent spread.
promote the general health of the tree through regular fertilization and watering.
