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Try a few houseplants to bring the outdoors inside

You won’t find local gardeners complaining about the recent rainy spell. Every drop is a welcome relief after what may well have been the driest summer on record.

What surprises me at this time of year is how quickly I find myself missing the sun and the sea of green and color in my garden. Cloudy, gray days make me long for happy, healthy plants.

So, I surround myself with houseplants. Not only do indoor plants brighten up a room, they absorb carbon dioxide and release oxygen, helping to clean the air.

All houseplants need three basic elements to thrive – light, water and nutrients.

Light

Plants depend on sunlight for photosynthesis. Because the specific needs for each plant will vary, it’s important to survey your indoor space to evaluate the amount of light available where you’d like to add plants. Make sure you consider both the duration and the intensity of the light. You can fill your windows with full-sun plants and save less well-lit spaces for plants that don’t need full light. While it’s never a substitute for the sun, fluorescent lighting can also help to supplement natural light.

Most plants at nurseries are tagged with some growing information like whether they need low, medium or high light. If they aren’t, check with sales staff or research your plants online to make sure what you choose will be a good fit for your space.

If your plant begins to lean significantly toward the light, it should be moved, as this is a sign that it’s not getting enough sun. You should also turn your plants regularly so each side gets equal sun exposure.

Water

The two most common causes of houseplant death are over- and under-watering. Many sources recommend watering plants once a week, but that’s just a guideline. To really gauge your plant’s water needs, you should use your finger to test the moisture of the soil just below the surface. If it’s still moist, don’t water it yet. For most plants, the best plan is to saturate the soil, then let it dry out before watering again. After a few cycles, your plants will let you know how long to go between waterings. If the plant is droopy or wilting, water less frequently.

Nutrients

Unlike the plants in your landscape, the correct houseplant potting medium is potting soil, which is typically a mix of peat, perlite, and vermiculite. Natural soils typically do not drain well, and so are not well suited to potted plants. Many of today’s potting soil mixes even come with additional nutrients to get you off to a good start.

Over time, those initial nutrients will leach out of the soil and will need to be replenished. An occasional fertilizer feeding will be necessary to keep plants healthy. Many good premixed houseplant fertilizers are available – just remember – it’s better to under-fertilize than to over-fertilize. Over-fertilizing can burn plants.

Temperature

Most common houseplants are native to climates similar to the temperature and conditions inside our homes. They do best at 65 to 75 degrees during the day and slightly cooler nighttime temperatures. Don’t place plants directly in the line of a heater, fan or air conditioner.

Pots and containers

Choosing the correct sized pot can be key to your plant’s health. A pot that is too small will limit plant growth and an over-sized pot can cause root rot when too much water is retained in the pot. Adequate drainage is critical.

You will periodically need to repot your plants. If the roots are straining out of the bottom of the pot, it’s time to move to a larger container. Generally, a new pot should just be a few inches bigger than the old one.

Air Root Plant – Also called Mother of Thousands, the babies form along the outer edges of the leaves of the mother plant. It likes full sun light.

Aloe – This full-sun-loving classic succulent has a sap that can help heal burns.

False Aralia – This wispy, upright plant is typically a floor plant as it gets four to eight feet tall. They like high humidity and moist soil with moderate light.

Begonia – This beautiful and colorful plant likes diffused light and a little extra moisture.

Dracaena – Also called Corn Plant, this is a simple plant to grow and likes strong or full sunlight. It can grow well over six feet tall.

Weeping Fig – This is an evergreen tree with a strong growth habit. This plant hates to be moved. Even a few inches to the right or left and it will drop its leaves

Philodendron – This is an easy plant to grow. The heart-shaped leaves are tough and adaptable.

Pothos Ivy – A great starter houseplant, pothos ivy is nearly impossible to kill. The plant can be started from cuttings placed in soil or water and can be left in water for long periods of time.

Rubber Tree – This traditional and simple plant requires little fuss and has pretty, glossy leaves that are striking. It has average water needs.

Snake Plant or Mother-In-Law Tongue – This is a very traditional houseplant. It seems to thrive on neglect.

Spider Plant – This delicate plant that grows new plantlets from shoots off the sides. It is great in hanging baskets. It likes diffused light and moist soil.

Wandering Jew – A fast growing vine that is perfect for hanging baskets. Do not let the soil get soggy.

Wait until last frost before you bring out the pruning tools

We left January with a 78-degree high one day and welcomed February with a 17-degree low the next. These dramatic swings in temperature are often painful for Austinites, for whom prolonged bitter cold is an anomaly. And it can wreak havoc on our gardens. Our plants don’t know if they are supposed to be dead, dormant or budding out.

As gardeners, we certainly want to take advantage of those sporadic and delightfully warm days to get caught up with our landscaping chores. But it’s still just a bit early.

There are still a few more weeks left with a danger of frost. According to the USDA Hardiness Zone map for the Austin area, our average last frost comes between March 1 and March 31. It’s typically the middle of March. (As we all know, using the term “typical” can get you into some gardening trouble here with our yo-yo like weather patterns.)

Try to be patient. (I know it’s hard when the sun is shining and everything is dead, brown and ugly.) Waiting to prune until after the last freeze prevents stimulation of new, tender growth that can be damaged by frost and can stress the plant by bringing it in and out of dormancy.

Getting started – pruners, loppers and shears

Good tools can make a big difference – for you and for your plants. A clean cut is much better for plants than ragged or torn edges. Sharp, high-quality tools like Felco or Fiskars brands make cutting easier for the gardener, too. Use hand pruners for smaller plants and some woody perennials up to 1 inch in diameter. For larger woody perennials and shrub limbs, longer-handled loppers help provide more leverage when cutting. Shears work best for shaping smaller shrub branches or grasses.

Woody Perennials

First, assess the damage on your dormant perennials — plants like Lantana, Esperanza, or Salvia. If you scrape the stem of most of these perennials you will be able to tell whether it is alive and dormant, or whether it has succumbed to winter. Look for signs of green close to the base of the plant. Normal pruning of most of our perennials will suffice if the plant is just dormant. These woody perennials are typically very hardy. While it might take them a little longer to bud out after a cold winter like this, most do, unless they were newly-planted before winter or are particularly small and not well established. Make clean sharp cuts leaving about 6” of stem above ground. New growth from these plants will come from the base, so cutting them low will not affect their development.

Succulents

Many aloes and agaves were severely damaged by our hard freezes this winter. Freeze-damaged succulents usually turn a lighter color, almost white, soon after the freeze. Later, the damaged part of the plant will wilt, and then turn black with rot. In some succulents, the affected parts eventually fall off.

If the center bud remains green and firm, the plant will likely to grow and recover, in spite of dead leaves. However, dead and damaged parts will never recover, and you can remove them. You should also look for new growth underneath the dead leaves and down in the base of the plant. These pups can often survive under the cover of the dead leaves.

Palm trees

If the center of the tree is fine, it will probably survive. Cut off dead or highly damaged leaves. Palms grow primarily in the warm spring and through the summer, and may look much better by the end of the summer.

Cycads – Sago Palms

Sago palms are popular in Austin, and many gardeners have them in their landscapes. Not actually palms at all, Sagos are cycads and they are normally hardy to 26 degrees. However, prolonged hard freezes cause damaged leaves to turn yellow or brown. These should be pruned to encourage new growth. You can remove all the leaves – they will grow back. If the trunk and leaf crown are still firm, the plant will likely recover. Don’t worry if it looks like a bad haircut for a while – all the leaves will eventually regrow from the trunk.

Crape Mrytles

Some people start pruning Crape Myrtles earlier, but just like other plants, they are still susceptible to late season frosts and should not be pruned until after that danger has passed. In spite of industry-wide efforts to educate homeowners and maintenance crews about the dangers of “Crape murder,” you can still spot Crape Myrtles all over town that have been topped off — cutting back all the major limbs severely and straight across. It’s almost as though they’ve been put in a guillotine — and about as attractive.

It’s an odd practice, considering that no other trees like live oaks, elms, yaupon hollies or mountain laurels, are treated that way when they are pruned.

Crape Myrtles should never be topped. Removing the terminal growing section of a tree ruins the natural shape and appearance, stunts its growth and weakens it. It can also reduce the number of blooms that the tree produces in the summer. When pruned back too far, new branches may not be able to support the weight of summer’s blooms, particularly when wet. Crape Myrtles should be pruned for shape and style, removing any twigs or branches smaller than the diameter of a pencil. To prune larger branches, trace down from the seedpod to where the stem meets a branch, and cut approximately 6 inches above that intersection. This ensures that the new branch will be strong enough to support future growth below your cut.

Once you’ve finished pruning and everything starts to bud out, don’t be tempted to fertilize newly pruned plants. They need to use all of their energy to begin new growth. Fertilizing now will over-stress them. Wait until later in the spring — at least a month — when they are established again.

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