Plant _ are organisms, such as bacteria, fungi, and viruses, that can be very harmful to plants.

Slow release fertilizers are typically mixed into plant media at the time of planting and are commonly _ type fertilizers.

When ordering for school greenhouses, teachers typically order bedding plants as young plants with well established, complete, and independent root systems known as

One of the fastest growing sectors of the green industry is _, a water based soil-less growing media.

Insects feed on a variety of plants. An insects feeding habits are determined by their

Plants that are deficient in _ often are reddish purple in color

Plants obtain _ by breaking down carbon dioxide during photosynthesis.

Most horiculture plants can thrive in a pH range of _ to 7.

The area on the stem where leaves develop is the _

The leaf arrangement in the figure is

A thin stalk called the _ support the anther.

Insects are supported and protected by a hardened _

A nanometer is the unit of measurement used to quantify _ wavelengths.

_ plants can flower under a wide range of day lengths.

A plants ability to bend through a maze towards a light source, as seen in the figure, is called

_ are tumor like growths that develop in response to an insect laying eggs within the plant.

A typical soil will be composed of mineral and organic matter as well as water and

The soil _ refers to the amount of sand, silt, and clay present in a given soil.

Soil pH is a measure of the amount of _ ions in the soil.

When working with cuttings, it is common to treat plants with an _ which is a plant growth hormone that induces adventitious root formation.

Some plants reproduce by natural layering. An example of natural layering is strawberries who reproduce from _.

The fertilizer analysis shown in the figure is a(n) _ fertilizer.

_ most commonly occur on the underside of lead and provide openings for gas exchange.

Sometimes leaves do not have a stalk but instead are attached directly to the plant base known as