Planning Irrigation for you Garden

When planning your garden you should take into consideration the water needs of each plant, the density/spacing of your plants, and ways to reduce the amount of water and equipment needed to sufficiently hydrate your plants. Staff in the Garden In Every School program prefer to use micro-irrigation drip systems. They are easy to install and manage, plus there are a variety of fittings so you can create custom irrigation designs.

You can use micro-irrigation fittings to target specific plants or you can use hoses that apply water evenly to a wider area. Targeted fittings include bubblers (seen below) and shrublers, which can be directed to the base of a plant. These come in handy with low density plantings and they help you meter the amount of water each plant receives. Bubblers generally come in 1 Gallon/hour to 3 Gallons/hour settings, while shrubblers can be adjusted by dialing the fitting head to the needs of plants and can emit up to 5 Gallons/hour.

Photo of bubbler courtesy of Joby Elliott

If your plants are relatively dense (within 8 to 12 inches of each other) and are aligned in rows you can use a couple of efficient products like drip tape or soaker hoses. Drip tapes attach to a water source and have small holes every 12 inches to water plants. Soaker hoses are porous tubes that allow water to drain directly through the hose into the soil; they will distribute water evenly and you can control the rate of the application.

Photo of soaker hose courtesy of Rian_Bean

Soil Preparation and Maintenance

Preparing and maintaining the health of your soil is the equivalent of taking your vitamins, exercising and drinking plenty of water. We take supplemental vitamins to maintain ideal nutrition, exercise allows oxygen to flow through the blood to make sure our tissue is healthy, and water replenishes our bodies and assists oxygen transport, among other vital functions. Other living organisms, including trees, plants, microbiota, and decomposers also need nutrients, oxygen and water to maintain their systems. By preparing your soil at the beginning of the growing season and carrying out a maintenance schedule for the rest of the season, your garden should maintain its health and production.

First we need to know a little bit about soil. Soil is a mixture of sand, clay, and loam, and depending on your geographic and geologic area, your soil may have a predictable composition. For those of us in the Inland Empire, particularly in the Chino Valley, our soil is clay-like. Those who live in the foothills near Upland and Rancho Cucamonga also have clay soils, but they are more likely to have rocky soil as well due to their proximity to the foothills.

Healthy soil also contains air, water, and a small amount of organic material. Loam soils are considered ideal because they are a good combination of sand and clay. The sand allows air and water to penetrate the earth, while the clay holds in nutrients and moisture. If you have clay soil, you can purchase special products at your local gardening store to amend your soil. I've searched several gardening blogs from the Inland Empire and it appears that people have had success with adding builder's sand and heavy compost to their clay soils. Builder's sand is different than ocean sand or playground sand. Builder's sand is coarse and large-grained. Adding this to fine clay should disrupt the settling pattern of clay. Also by adding coarse and heavy compost, you will add nutrients to the soil and provide a biodegradable aggregate, which will also disrupt the settling pattern of clay.

The manner of soil preparation described above is ideal for growing vegetables. Most vegetables are annuals and are expected to germinate, flower, and produce fruit or mature within a short time frame. They can take advantage of the freshly applied organic matter before it begins to decompose further and lose its nutritional value. Their roots tend to spread quickly, but not as deep, nor as extensively as a fruit tree. If your intention is to plant vegetables, use the mixture described above to achieve optimal results. If you're planting fruit trees, there are two schools of thought related to soil prep. Some say that compost and soil inputs should be added to the ground at the time of planting. This could give the tree a head start by having nutrients close to its roots, however, when the roots reach the native soil, they might go into shock. The second method, which we follow at IEUA, is to plant fruit trees directly into the native, clay soil. The tree may take some time acclimating to the parent soil, but its growth should proceed uninterrupted after it becomes accustomed to its surroundings.

Once you have prepared your soil, it's time to develop a maintenance schedule. Soil maintenance for vegetable beds is fairly simple. Compost can be added to the soil prior to planting and then once more during the growing season, preferably when plants are flowering. If you do not have compost readily available, you can use plant food instead. Make sure to keep weeds pulled so they don't consume the nutrients that were intended for your plants. Fruit trees can also be maintained by adding tree stakes to the base of the tree. About three tree stakes will suffice per tree, but make sure to read the instructions on the packaging just in case. Tree stakes or tree food should be added about three months prior to the fruiting season of your particular type of tree.

See the links below for more information on soil preparation and maintenance:

This site provides good info about clay soils and how to prepare for planting:

http://organiclifestyles.tamu.edu/vegetables/soilpreparation.html (Texas A&M University)

Although we didn't address it, some people prefer to add lime, blood meal, and other additives to the soil to adjust the pH for particular plants. The following sites are helpful in this matter:

http://edis.ifas.ufl.edu/vh024 (University of Florida)

http://www.homesteadingtoday.com/showthread.php?t=303252 (Manure v. Bone Meal v. Blood Meal)

Preparing Seedlings

Don't wait until April to start your seedlings. You may miss out on some tasty, late fruiting varieties of warm weather veggies. Get started in early February and expand the possibilities of your garden!

What you'll need:

a seed tray (plastic or biodegradable)

potting soil

seed packets

 

Photo of tomato seedlings courtesy of Lucy Crosbie

Seeds need moisture and a constant temperature between 65 and 75 degrees Fahrenheit to germinate (or sprout). Depending on the plant type, some seeds will germinate in a matter or days, while some will need two to three weeks. Once the seed has germinated, it will send up starter leaves, often these are called "water leaves".

Seeds can be planted in late January and kept indoors for six weeks until they are ready to be transferred outside.

Not all seeds need to be started in a planter, some actually do better being planted directly in the ground.

Designing your Spring/Summer Garden

Designing your own garden can be rewarding and educational and you don't need to be a Landscape Architect to do it! Using the principles enumerated in our recent post, Planning your Spring/Summer Garden you can begin to turn your ideas into a physical reality.


To get started, grab a measuring tape and record the dimensions of your garden. Then use a ruler and a piece of sketch or graph paper to draw the outline of your garden. To draw your garden to scale, assign a certain length to equal one inch. For example, if your garden is twenty feet long, you can set 1 inch equal to two feet. Using graph paper is even easier because the quadriles are already on the page. Also, if you're interested in creating your design online instead of on paper, you can use free design tools like Google Sketch-Up to create your garden.

After the outline of your garden is drawn, you can create stencils or symbols to represent your plants. If you would like, you can buy gardening or landscaping stencils, or you can go online and download pre-made symbols (see the link below for gardening symbols). Just print the symbols on card stock, cut them out, and use them to trace your design.

Before you begin populating your garden with symbols, remember to make a plant key! A plant key is very important because it will help you organize your ideas and your design. It is invaluable when it's time to start planting, because it is difficult to remember the ideal location for every plant and your helpers can find the plant location directly from the chart.

After your outline, symbols, and key have been made you can begin to design your garden. Remember to keep the principles we have recently discussed in mind: intercropping plant species, incorporating pollinator-friendly and pest-deterring plants, and crop rotation (to confuse pests). Also, keep spatial and height elements in mind when planning your garden. Taller plants and those that need trellising should be placed near walls or toward the back of the garden so they do not block the sunlight needed by low and medium height plants.

Remember to add some color to your design. Shrubs and vines can be given a dark green color, while sunflowers can be bright yellow. A garden design is a practical way to organize a garden, but it can also be a fun way to get your creative juices flowing. Your final design can become an artful homage to your edible landscape!

Photo of garden design courtesy of Chris Kreussling



Try using some of these symbols from the University of Minnesota: http://www.google.com/imgres?imgurl=http://www.sustland.umn.edu/design/images/landscapesym2.gif&imgrefurl=http://www.sustland.umn.edu/design/lanscapesym.html&usg=__HDT3tT0S076F0OirIIEK8QS6b28=&h=770&w=600&sz=57&hl=en&start=5&zoom=1&tbnid=Gb4v_FnVJOpKfM:&tbnh=142&tbnw=111&ei=Ia0ZT9-WDurg0QHW_e3fBA&prev=/search%3Fq%3Dplant%2Bsymbols%26um%3D1%26hl%3Den%26sa%3DN%26rls%3Dcom.microsoft:*:IE-SearchBox%26rlz%3D1I7ADFA_en%26tbm%3Disch&um=1&itbs=1

Winter Garden Maintenance

The middle of January is a good time to do a little maintenance on your garden, even if you're not actively growing crops. Think of it this way: if you get a head start now, you'll have less work to do in the spring and summer. Here's a list to follow:

1) Weed your garden. Winter weeding is one of the best things you can do to ensure a successful yield in the summer. Most weeds sprout up in the winter, germinate in the spring and summer, set seed in the fall, and die when cold weather hits. If you can pull the weeds (or inhibit their access to sinlight) in the winter, then you have limited their chances of reseeding. Also, the longer a weed sits in the ground, the more time it has to establish roots, making it more difficult to extract. The moral of this story: pull weeds early and often.

2) Turn your compost. We all took our plant clippings, vegetable trimmings, and leaves and threw them into our compost bins at the end of the summer, but most of us probably forgot to turn our compost bins. If material has been in your bin since August or September, chances are it has already started decomposing. Give it a good turn and give those microdigesters some oxygen so you can have plenty of compost in the spring.

3) Prepare your gardening tools. If you're like me, you probably left a couple of tools outside and they've turned a nice shade of rust by now. Pick up your tools, clean them off (you can use a brilo pad or sand paper to scratch away at rust), and organize your tools. You might even want to get a head start and see if your local garden supply store has plant food that you can stock up on.

4) Stock up on seeds and trays. One of the many benefits of living in California is the immense amount of sunlight and good weather. So Cal gardeners can start a seed tray as early as January and be ready to plant by mid-March. Just remember to keep your seedlings inside by a window so they can be shielded from any unexpected weather. Also, if your local garden supply store doesn't have seeds yet, you can also go online and order them.

5) Prepare and repair. If you garden in pots, now is a good time to get rid of your old soil and give the inside of your pot a good scrubbing. Cleaning the inside of a garden pot is suggested so you can kill any mold or bacteria living on the walls of the vessel. Or if you garden in plant boxes, make sure boxes are in good condition. Finally, if you prefer in-ground planting, add soil additives like lime or clay conditioner today.

Good luck with your gardens!

Planning your Spring/Summer Garden

The middle of winter is a good time to plan your garden. Good planning can help you avoid pest issues and ensure a good yield over the summer.

How to plan your spring/summer line-up:

• Rotate your crops. Pests, molds and viruses love it when the same crops are planted in the same location year after year because they don't have to go far to get their favorite food. Also, know which familes your plants belong too. Plants in the same family, such as the Nightshade family (tomatoes, eggplants, and potatoes) or the Brassicaceae family (broccoli, cauliflower, and Brussel sprouts) tend to attract similar insects, so it's a good idea to mix these up a bit.


• Intercrop. As we learned from the Integrated Pest Management post (http://ieuagies.blogspot.com/2011/12/integrated-pest-management.html), intercropping reduces garden pests by limiting the amount of any one plant type found in the same area. Additionally, intercropping refers to the strategic planting of pest-repelling plants, such as marigold, garlic, and certain herbs (dill and mint) to ward off infestation.


• Attract beneficial insects. Remember to incorporate flowering plants for pollinators and clovers, mustards, dill, and chives for ladybugs. These plants can be intercropped with vegetable plants to act as companion plants.


• Good timing leads to better yield. In a well-planned garden, you can often increase your yield if you incorporate the plant's 'time to maturation' into your time schedule. In the case of tomatoes, there are three varieties: early maturing plants (40-55 days: Early Girl & Early Wonder), mid-season plants (56-75 days: Better Boy & Celebrity), and late-season plants (76-95 days: Brandywine & Cherokee Purple). Planting some of each variety will ensure that you have tomatoes all summer long and well into the fall. Check the information on the seed packet to determine the time to maturation for vegetables.

After you decide which plants you would like to incorporate into your garden you can begin to draft a design for the space. See our upcoming blog post: Designing your Spring/Summer Garden to get inspired.

Integrated Pest Management

Integrated Pest Management (IPM) is a pest control method which incorporates ecological principles into pest management practices. Gardens are full of insects, some are considered beneficial because they act as pollinators, decompose organic matter, or eat pests. However many of the critters and insects in gardens are considered pests, which the IPM program of the University of California defines as "organisms that damage or interfere with desirable plants...(they) also include organisms that impact human or animal health."

In the picture below you will find a lady bug and several aphids. Aphids are soft-bodied insects that feed on the sap of plants; they are considered pests because they damage the ability of the plant to provide nutrients to its leaves. Aphids also accumulate rather quickly, so if one is found, many more will follow. Luckily, aphids can usually be removed by spraying them off with water or hand picking. Larger infestation issues can be resolved with homemade garlic or pepper sprays.

Photo of ladybuy and aphids courtest of Dave Gunn
IPM is a targeted approach to reducing pest populations and is based on the following principles and techniques:
1. There is an acceptable level of pest population. Prior to commercial agriculture many farmers accepted that they would lose a small percentage of their yield to pests. Over time, the standardization of more potent pesticides and elaborate applications (such as crop dusting) changed the expectation of commercial farmers. IPM developed as an alternative to widespread pesticide use in the 1950s throughout the US, when indiscriminate field spraying began to occur on commercial agriculture sites.

2. Preventative cropping and cultural practices. There are several techniques that gardeners can do to reduce pests naturally. A method called intercropping places different plant species next to each other in the garden, rather than planting the same species together. A variety of bugs will be attracted to the different plants, reducing the possibility of an invasion. Plants that attract beneficial organisms (those that deter or eat pests) should be planted throughout the garden. Another method to reduce pests naturally is to plant peppers in between plants. Pepper plants are high in capsaicin and are helpful in deterring mammalian pests.

Photo of habanero peppers courtesy of Amy Kay Watson

3. Monitoring. Monitoring is the key to success with IPM practices. Careful observation and identification of which species are harming the garden will allow the gardener to determine the best method of pest control.

4. Appropriate control mechanisms. There are essentially three control mechanisms used in IPM: mechanical, biological, and limited pesticidal controls. When pest populations are low and localilized, mechanical controls (such as hand-picking or water spraying) can remove pests best. Biological controls include the use of natural sprays, intercropping, and incorporating plant species that attract natural enemies of pests. Finally, limited pesticidal controls are used when both mechanical and biological controls have failed. A targeted application of a pesticide may be used to reduce the pest population.

You can practice Integrated Pest Management in your school's garden. In late January/early February, start planning your garden. This is easily done by tracing an outline of your planting area and creating symbols for different plants. Incorporate the concepts of intercropping into your garden design. Also, try to include nectar-producing plants which tend to attract a variety of pest enemies naturally. Other plants to try: marigolds, peppers, and garlic.

For a list of plants to combat particular pest species see: http://en.wikipedia.org/wiki/List_of_repellent_plants

For more information on IPM: http://www.ipm.ucdavis.edu/GENERAL/whatisipm.html