Give Your Garden Pots the Care They Deserve

Watering, fertilizing and repotting protects container plants from diseases and prolongs their lives.
From: DK Books - Learn to Garden
Homemade Irrigator

Homemade Irrigator

Photo by: DK - Learn to Garden © 2008 Dorling Kindersley Limited

DK - Learn to Garden , 2008 Dorling Kindersley Limited

A piece of slate or crock can be used if you don't have a watering wand. Place it on the soil as you water and it will help distribute the flow evenly.

Plants in containers are easy to maintain and control. Feeding and watering can be regulated and monitored, while deadheading and pruning are simple, as plants in garden pots are movable. 

When a plant’s season of interest has passed, you can simply replace it. Plants that grow too vigorously in open ground, such as some bamboos, are restrained by pots, while slower-growing species that are easily swamped in a border can be pampered. Pests and diseases are easy to treat, and plants can be lifted above soil level away from slugs and snails. However, plants in pots depend on you totally for their food, water, and general care, whereas the same plants in open ground will survive with far less attention. 

Watering 

Containers dry out quickly, especially in hot or windy weather. Some plants, like camellias and rhododendrons, do not set flower buds properly if they are short of moisture. Being evergreen, they need watering all year. Pots close to walls and fences or under trees do not receive much rainfall, so keep an eye on them. The signs of lack of water are obvious—wilting, yellowing foliage, and in extreme cases falling leaves. Use a watering can, or a hose with a wand or nozzle, so you can moderate the flow of water. The plant has had a thorough soaking once water flows from the bottom of the pot. Surface compaction may prevent water from soaking in at all; push a hand fork into the soil a few times to remedy this. An irrigation system is the most reliable way to keep plants watered. Small-gauge pipes with adjustable nozzles are placed in the pots; water can be controlled by a timer. A piece of slate or crock can be used if you don’t have a watering wand. Place it on the soil as you water, and it will help distribute the flow evenly.

Fertilizing 

Plants in containers need fertilizing from late spring to mid-fall for healthy growth and a succession of flowers. Fertilizing is usually done every two weeks, though hungry plants, such as tomatoes and brugmansias, need it weekly. The simplest method is to add water-soluble fertilizer to the watering can. Controlled-release fertilizers avoid the need for continual feeding, as the fertilizer is released over several months. These are available as pellets, sticks, or small p lugs, which are pressed into the soil once the plant is in the pot. Alternatively, buy granules and mix them into the soil before planting. All forms are useful in a low-maintenance garden. Controlled-release fertilizers are also the best option for containers packed full of plants, such as hanging baskets. Follow the manufacturer’s guidelines; over fertilizing can be fatal. Adding well-rotted manure to the bottom of the pot when planting, or sprinkling pelleted chicken manure on pots in spring, are good organic alternatives. Water-retaining gel is useful for those who occasionally forget to water; it is excellent for hanging baskets, which dry out quickly. The gel stores moisture around the root ball, creating a reservoir for the plant to draw on in dry periods. Add the gel granules to the potting mix at planting time, following the directions on the packet.

Repotting 

Repot regularly in spring, using a new pot only slightly larger than the original. Potbound plants are often top-heavy, and hard to water, with  little space for water to collect on and seep into the soil without spilling over the edge or running down the inside of the pot. Foliage may be yellow, and new growth reduced. If you want to keep an overgrown plant in the same pot, either prune it, or divide it and replant in fresh potting mix. Also, top-dress potted trees and shrubs in spring by removing one-third of the soil, without damaging the roots, and replacing it with fresh. Moving heavy pots, even when empty, is not easy. Grow plants that will be moved regularly in light pots and soilless potting mix. Plant movers—metal or wooden stands on wheels, and equipped with brakes—are useful for heavy containers.

Next Up

Garden Design: Connect Your Indoor and Outdoor Spaces

Let your indoor space inspire your landscape design plans.

Define Your Outdoor Space With a Garden Fence

Discover the materials and design that will work best for your garden boundary, whether it is a fence, wall or hedge.

Kitchen-Inspired Container Gardening for Small Spaces

You don’t have to have a green thumb to have a green patio. All you need are the right tools, info and a little creativity.  Sponsor content courtesy of Fiskars

Edible Gardening in Small Spaces

Make the most of a small garden space by mixing flowers and vegetable plants in an ornamental edible garden.

Less Is More: Small Space Gardening

Even miniscule backyards, rooftops and balconies can be transformed into relaxing, inviting outdoor living rooms.

Pots in Gardens or Yards

Learn how containers can add flair, focal points and versatility in your garden design.

Start Your Garden Pots Off Right

Take time to prepare these ideal growing conditions and you will be rewarded with healthy, productive crops.

Creating Mix-and-Match Container Gardens

Opposites certainly attract in these container gardens that pair together a wide range of plants.

Planning Crops in Pots

Plan your crops carefully to achieve a long cropping season and a lush, colorful container display at all times of the year.

Plant a Pot of Wallflowers

Wallflowers are biennial plants, which means they live for two years, producing leaves in the first and flowers in the second. Buy them with bare roots and plant in fall, ready to bloom the following spring.