Growing Rhubarb

Although the origins are unclear, rhubarb is probably a hybrid of R. rhaponticum and R. palmatum. These parents and… Read More »

Tuberous Begonias

Tuberous begonias are probably the most well-known begonias here in the west. They range from saucer-sized blooms on… Read More »

Forcing Bulbs

The secret to forcing bulbs is in knowing how much time they need to develop strong roots and come to bloom at a… Read More »

Horticultural Oils

Oil sprays have been used since the late 1800's for the control of various insect pests of fruit and shade trees. As… Read More »

Leaf Eating Pests

In the realm of plant problems, roses are best known for falling prey to aphids and various fungal diseases. Less… Read More »

Pruning Old Roses

“Pruning a rose bush is not unlike giving a home haircut to a small child: you do the best you can, secure in the… Read More »

How to Grow Roses

Growing Roses in the Bay Area When to Plant: Potted roses can be planted any time of year, though the best selection… Read More »

Growing Potatoes

Potatoes (Solanum tuberosum) originated in the Andean highlands (Peru, Colombia, Ecuador, and Bolivia), where the Incas… Read More »

Growing Garlic

Garlic originated in central Asia with long cold winters, damp cool springs and warm dry summers. Since then they have… Read More »