Garden Glossary

Welcome to the Garden Glossary! Explore common gardening terms and definitions alphabetically. Whether you're new to gardening or experienced, this guide will deepen your understanding of key terminology. Use the table of contents for easy navigation and enrich your gardening knowledge!

A B C D E F G H I J-L M N O P Q R S T U V-Z

A

Aphids

Aphids are tiny insects that are pear shaped, and come in different colors. Found often on new plant growth like tomatoes and peppers early in the season. Using chemical soaps to kill them may harm beneficial bugs like ladybugs. Instead, applying worm castings at the plant base with good watering introduces chitinase enzymes. Aphids can't digest chitinase, and when they drink the worm casting liquid, it kills them.

Aeration

Loosening compacted soil to improve air circulation, water penetration, and root growth

B

Biennial

Plants that take two growing seasons to complete their life cycle, typically flowering and producing seeds in the second year. Examples include carrots and parsley

Bolting

The premature flowering and seed production of plants due to stress or high temperatures, often leading to bitter-tasting leaves

C

Companion planting

Planting different plants together to benefit each other

Compost

Decayed organic matter used as fertilizer

Crop Rotation

Changing the location of plant families in garden beds each growing season to reduce soil depletion, pest buildup, and disease recurrence while improving overall soil health and productivity

D

Direct Sowing

Planting seeds directly in the garden soil rather than starting them indoors in pots or trays

Disease Resistance

Plant varieties bred or naturally resistant to common diseases, reducing the need for chemical treatments and ensuring healthier plants

Drip irrigation

Watering system that delivers water directly to plant roots

E

Elevation

The height or altitude of a garden area, which can affect temperature, drainage, and plant selection

Enrichment

Adding nutrients, organic matter, or beneficial microbes to soil to improve its fertility and health

Erosion

Soil wearing away due to wind or water

F

Fertilizer

Nutrient-rich materials (organic or synthetic) added to soil or plants to promote growth, flowering, and fruiting

Frost Date

The average date of the last expected frost in spring or the first expected frost in fall, important for planting and protecting tender plants

Full Sun

Full sun (6+ hours): Plenty of direct sunlight, ideal for sun-loving plants. Learn more

G

Germination

The process where a seed begins to sprout and grow into a new plant

Greenhouse

A structure with transparent walls and roof, typically made of glass or plastic, used for growing plants that require controlled environmental conditions

H

Hardening Off

Gradually acclimating indoor-grown seedlings to outdoor conditions (sunlight, wind, temperature) before transplanting them into the garden

Harvesting

Gathering mature vegetables or herbs from the garden at their peak ripeness for consumption, cooking, or preserving

Herbicides

Chemicals used to kill unwanted plants (weeds)

Heirloom

Traditional plant varieties that have been passed down through generations, known for their unique traits and flavors

Hybrid

Plant varieties created by cross-pollinating two different parent plants, often bred for specific traits such as disease resistance or high yield

I

Indoor Plant

A plant cultivated and grown indoors for ornamental purposes

Inorganic Gardening

A gardening approach that involves using synthetic fertilizers and pesticides rather than organic methods

Inorganic Soil Amendments

Soil additives such as perlite, vermiculite, or sand that do not contain organic matter

Insecticide

A substance used to kill insects that are harmful to plants

Insecticidal Soap

A pesticide made from potassium salts of fatty acids that is used to control soft-bodied insects such as aphids, mealybugs, and spider mites

Irrigation

The process of artificially applying water to soil to assist in the growth of plants

Collapsible content

J-L

Leaf Mold

Decomposed leaves that enrich soil when used as a natural fertilizer

Leaf Mulch

Shredded leaves used to cover soil and improve its quality

Leggy

Plants with long, thin stems and not many leaves, usually because they don't get enough sunlight or are too close together. They need pruning or repotting to grow compact and healthy.

M

Mulch

Material (such as straw, wood chips, or shredded leaves) spread over the soil surface to retain moisture, suppress weeds, and regulate soil temperature

N

Nutrient Deficiency

Lack of essential nutrients in plants, leading to stunted growth, yellowing leaves, and poor overall health

O

Organic Gardening

Gardening without synthetic pesticides or fertilizers, using natural methods like composting, mulching, and beneficial insects for pest control

P

Partial Sun

Partial sun (4-6 hours): Some direct sunlight, suitable for plants that thrive in both shade and sun. Learn more

Perennial

Plants that live for more than two years, regrowing each spring from their roots or crown. Examples include mint, thyme, and asparagus

Pesticides

Chemicals used to control pests

pH

A measure of soil acidity or alkalinity, influencing nutrient availability to plants; most plants prefer slightly acidic to neutral soil (pH 6-7)

Planting depth

How deep a seed or plant should be buried in the soil

Pollinators

Animals like bees and butterflies that help in pollination

Pruning

Trimming back plant parts (such as branches, stems, or leaves) to promote plant health, shape, or fruit production.

Q

Quality Soil

Rich and well-balanced soil containing adequate nutrients, organic matter, and good drainage for plant growth

Quenching

Watering plants thoroughly to ensure they receive enough moisture, especially during hot and dry periods

Quick-Release Fertilizer

Fertilizer that releases nutrients rapidly to plants, providing immediate nourishment

R

Row Cover

Lightweight fabric or plastic covering used to protect plants from pests, frost, or excessive sun while allowing air, light, and water to pass through

S

Seed

Small, dormant plant enclosed in a protective outer covering

Seedling

A young plant that has recently germinated from a seed

Sow

To plant seeds in soil or growing medium

Sprouting

When seeds or plants start to grow

T

Thinning

Removing excess seedlings to ensure proper spacing and resources for the remaining plants, preventing overcrowding and competition

Transplanting

Moving a plant from one location to another, such as from a seed tray to a garden bed, to promote healthier growth or spacing

Trellis

A structure (such as stakes, wires, or frames) used to support climbing plants like beans, peas, or cucumbers

U

Underwatering

Not giving plants enough water, which can cause them to wilt or dry out

Unripe

Refers to fruits or vegetables that are not fully mature or ready for harvesting

Urban Farming

Growing crops or raising livestock in urban areas, often using small plots of land, rooftops, or community gardens

V-Z

Weeding

Removing unwanted plants (weeds) from garden beds to reduce competition for water, nutrients, and space

Yield

The quantity of crops harvested from a specific area or plant, influenced by factors like planting density, soil quality, and care practices