Freezes - Desiree Gardens

February is here, and it’s time to get ready for spring!

Desiree Gardens February 3, 2024 February 4, 2024Annuals, Calendar, February, Freezes, Natural Gardens, Perennials, Plants, Weather 0

February begins to herald the change to spring here in North Texas, and while we often get some of our hardest freezes in February it’s also the time when your garden will begin to wake up. Most plants use a combination of available sunlight, as the days grow longer, as well as soil temperature to decide when to come out of dormancy. Now is also the time to begin planning your spring garden. But what needs to be done now?

This is the perfect time to prune woody trees and shrubs, except for oaks, while they are still dormant. Any remaining ornamental grasses and perennials should also get a trim to be ready for spring, although there are some exceptions: plants like wisteria set their buds in the fall and should not be trimmed until later in the spring after flowering. If there are any deadfall, loose brush, or annuals that have run their course, it is time to do a deep cleaning in your garden and pull all that out. It’s not too late to plant new trees and shrubs, but it’s wise to prune by as much as 50% (depending on species) them when they are planted. Nandinas, for example, whether new or existing should be severely pruned back with the tallest canes taken back all the way to ground level. This will encourage more bushy growth and prevent them from becoming too leggy.

If you are starting anything from seed they should be planted indoors for now so that they are ready for planting when the soil temperature warms up a bit. Certain perennials should also be planted, or at least get them ready to be planted, such as mallows, gloriosas, fall asters and salvias. Cool season annuals can also be swapped out for iceland poppies, larkspur, and sweet alyssum.

You can begin to fertilize your trees and shrubs right now, but hold off a little bit on any cold-sensitive plants. They should wait until late March or just before Easter before being fertilized. By the same token your lawns should be scalped, fertilized (depending on the species, it’s still to early to fertilize your warm weather lawns such as St. Augustine) and possibly amend with peat moss towards the end of this month. If possible, make sure to bag the clippings and use it in your compost or as mulch. Remove any winter seeds and start looking to use a pre-emergent weed killer later this month or in early March depending on the weather. If you need to aerate your lawn to help reduce soil compaction this is a good time for that as well.

Remember that we can get hard freezes even through late March and early April, so try not to get overeager and be prepared to use frost cloth to protect your sensitive plants from early spring cold snaps. This is an exciting time of year for gardeners as the warmth of spring is just barely in sight. Consult your local nursery to see what plants are in stock and appropriate to be planted right now, and don’t hesitate to pick up the phone and give us a call for a consultation specific to your garden goals.

Need help with your irrigation or sprinkler system? Does your garden need an overhaul or just a general checkup? Maybe you just need a helping hand to protect sensitive plants from freeze and frost. Give us a call at 817-202-4808, or drop us a line and contact us here, to find out how Desiree can help you create a wonderful garden with a budget you can afford.

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After a hard freeze, don’t panic! How to evaluate damage.

Desiree Gardens January 22, 2024 January 23, 2024Calendar, Extreme Heat, February, Freezes, January, Weather 0

Well, we’ve finally emerged from the frigid ice-box that was North Texas these past few days. Hopefully you’ve been able to shelter your most sensitive plants through cleverly designed micro-climates, deep watering, and judicious use of frost cloth. Frost cloth is remarkably effective in the day time when properly applied: it provides a 5°F to as much as 10° rise in temperatures during the day time. That’s more than adequate for most plants as it brings our lows in the teens up to 25° plus. The danger comes at night when their effectiveness dwindles, leaving plants to rely on adequate water and ground temperature to help them weather the storm.

The most important thing when evaluating frost or freeze damage is not to panic. Some damage is easy to find: black or mushy leaves and stems are easy to find on non-woody plants and can be removed straight away, but don’t just start pulling out plants. While some damage is normal, many many plants will be able to recover with the first warmup of spring. Some plants will die completely back to the ground only to recover from their ground insulated roots. Other plants will look damaged with curled leaves, some discoloration, and branches that appear dry and dead. For woody plants, shrubs and trees, patience is key. Certain palms, waxleaf ligustrums, oleanders, and gardenias are some example of woody plants that cannot tolerate the cold. Still, give these guys time and wait until spring to give them a fair chance for a proper evaluation.

January is often one of our driest months, but we’ve been blessed with an abundance of precipitation both during and after our most recent hard freeze. As mentioned in a previous article, water is one of the best defenses against freeze damage. Moist soil and mulch hold an immense amount of water, and that water resists changing into ice until it has lost a significant amount of energy. Liquid water will remain at 32°F for quite some time before freezing. This is also why well watered and hydrated plants suffer less damage than dry plants. Additionally, water features and swimming pools will contribute heat and atmospheric moisture (humidity) to the surrounding plants.

Your frost cloth provides wind protection as well and prevents wind burn on sensitive leaves. Plant location also plays a huge factor here. We mentioned creating a micro-climate for your garden earlier. This means that your most sensitive plants should be on the south side of a structure like a fence or house where they not only get wind protection but also benefit from the direct sun in the daylight. Hardier plants can be placed on the north side of houses, fences, or other structures. The hardiest evergreens can be placed so that they provide shelter from biting north winds for more sensitive plants that are south of this wind block. Finally, brick, stone, and rock, including large boulders, absorb a significant amount of solar radiation during the day that is then released back as heat during the night.

To recap, if you are using some or all of these tactics your plants will stand a much better chance of surviving cold snaps. But after things warm up don’t panic! Some damage is to be expected but many plants are much hardier than people give them credit for. They may look a little sad for a while, but give them a chance until spring to see how well they actually fared before you start cutting limbs and branches or digging them out.

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Freeze Warning! How to protect your plants.

Desiree Gardens January 13, 2024 January 13, 2024Freezes, January, Weather 0

We are on the cusp of a frigid couple of days this week, and with temperatures dropping into the single digits even some of your hardiest plants may need a little bit of help.

Let’s start by going over plants that will do fine in this cold: Any trees or shrubs that have lost their leaves for the winter will be fine. They are dormant and, absent the roots actually freezing, should be fine. One exception is container plants. Any trees or shrubs – any plant really – that is in a container should get special attention as this cold snap can freeze the roots of container plants far easier than plants in the ground. All of your winter annuals should be fine, and some perennials that have managed to stick around this long, even if they won’t tolerate the cold without dying back to the ground, will be okay. Don’t panic if you see some of these plants die back to the ground. Come spring they will explode with life again.

If you do have container plants that you cannot bring inside, make sure to give them a good deep watering and then wrap the container in blankets or frost cloth. This method works well for your other plants in the ground that need protection: frost cloth or blankets should cover the plant entirely and be staked to the ground. If you’re using moving blankets or something that is more difficult to stake you can anchor them with bricks or rock. Again, deep watering is one of the best ways to prevent freeze damage. Water has to lose quite a bit of energy in order to make the change over to ice. This means that, until it freezes, it will stay right at 32°F until it finally gets cold enough to change to ice. For plants in the ground it will likely never freeze in our area due to the natural warmth of the ground.

Deep watering before a freeze also ensures that your plants are properly hydrated. The same principle we discussed above also applies here. Dried out plants can freeze much easier than plants that are well watered. Frost cloth or blankets help here as well by keeping the harsh winds off of the plant. During cold spells like this that frigid air can cause wind burn and damage leaves on your evergreen plants.

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