Freeze & Frost Tree Recovery
Expert Arborist Care for Houston Landscapes
Freeze & Frost Tree Recovery in Houston
Some plants are hardier than others. With so many different trees and plants in the Houston landscape, knowing which ones survive a freeze on their own — and which ones urgently need help — is not always obvious.
When records are broken with low temperatures, the expertise of a Certified Arborist or Board-Certified Master Arborist is invaluable. Trees, shrubs, turf, and tropicals all need different kinds of help depending on how badly they were frozen. Let our experts help your landscape recover.
Recovery by Plant Type
Different plants need different approaches. Use the sections below to find guidance for your specific landscape concern.
Trees
Established native trees do not usually die from extreme cold. Many of our native trees grow much farther north and are perfectly fine with temperatures below 10°F. However, there are important exceptions.
Thin-barked trees are much more likely to experience irreversible frost damage. Redbuds and Viburnums are among the full-sized native trees that may suffer. Young native trees under an inch in diameter can also freeze to death — their bark is not thick enough, and in a landscape setting they lack the shelter of a mother tree.
Among non-natives commonly damaged by frost: Queen Palms, Sago Palms, Bottlebrush, and Ponytail Palms. Florida Sabal Palms are hardy to 15°F; the native Texas Sabal is slightly hardier at 10°F. The 2021 Houston freeze reached below 6°F in some areas — and ArborTrue has already documented trunk damage on Sabals from that event.
- Cracks in the bark — water in the trunk froze, expanded, and ripped the bark open. This may not appear for a month or two.
- Do not trim yet — wait for professional assessment before removing any material.
- All frost-damaged trees will benefit from professional fertilization by a qualified arborist.
Palms
For palms, look for wet spots on the trunk immediately after a freeze — these appear almost right away because the cells died and are leaking moisture directly out of the trunk. This does not mean the whole palm is dead; it means parts of the trunk have died. The tree requires attention ideally within 2 weeks. A qualified arborist can scrape out the dead tissue and seal the wounds to prevent fungal infections.
Don't cut down drooping fronds
If the bud of the palm is brown and the fronds are drooping, most people remove the palm before it has a chance to recover. Collapsed fronds almost always mean death in warm weather — but after a cold snap, they do not. Many of these palms are still alive and recoverable with the right arborist intervention.
Without a surgical procedure, a palm with a collapsed bud will probably die — but there is a way to revive it. The exterior of the bud has been killed, and the tissue shrinks tightly against the interior living tissue, creating a shrink-wrap environment that prevents new frond spikes from growing. By carefully cutting open the very top of the bud, the pressure is relieved and new growth begins.
April / May is the ideal time for palm bud surgery
When this procedure is done around April or May, the spike starts shooting out of the top almost instantly — sometimes by a few inches in a matter of minutes. On palms with more extensive damage, the frond can be manually pulled from the bud to expose it to sunlight, triggering recovery. Once sunlight hits the fronds, the tree begins to revive.
The palm may still develop rotten spots on the trunk later on — those need to be addressed promptly to prevent Ganoderma trunk rot.
Cold Hardy Palms OverviewTurf
Perennial turfgrasses like St. Augustine, Bermuda, and Zoysia will recover from frost even if you lose a little of it. The key is in how you support recovery.
Avoid synthetic fertilizers on frost-damaged turf
Fast-release and synthetic fertilizers applied to frost-damaged turf can easily trigger a pathogenic fungal attack. Slow-release organic fertilizers are always the right choice — and frankly, it's all we recommend.
ArborTrue uses a special blend of minerals and organic nutrient sources for frost recovery on turfgrasses. The treatment is typically needed only once, after which you can return to your regular organic routine.
Winterized lawns recover faster
Winterization — applying extra potassium before the turf goes dormant — helps move nutrients from the leaf down to the roots for storage. This reduces nutrient loss during a freeze and allows the turf to recover strongly as temperatures warm. Organic lawns often fare even better in freezing temperatures because the high microbe content warms the soil. Ask us about professional winterization for next season.
Shrubs
As arborists, our primary focus is trees — but because trees share the landscape with other plants, we're often asked for advice on shrubs. A damaged landscape creates urgency, but acting too quickly can cause more harm than good.
General rules:- For reliable natives like Hamelia, Salvia, and Lantana — go ahead and cut them back whenever you like.
- If any plant is "mushy," cut it to the ground — but do not pull it out yet. Give the soil time to warm up over the next couple of months.
- For most roses, wait to see where they leaf out, then trim dead tips back to the leaves.
- Azaleas can be remarkably cold-hardy. If they lost their leaves, give them time. In Houston, frost can occur as late as mid-April — trimming before then risks further damage.
DIY option: liquid seaweed and molasses
If professional arborist care isn't immediately accessible, spraying liquid seaweed and molasses is an excellent source of minerals and carbohydrates to revive the soil and plants. Spray the whole plant to the point of runoff and drench the ground as well.
"Remember — if it's mushy, cut it down. If you're unsure, just wait and see. Either way, a lot of energy leaves the landscape during freeze events, and professional help is only one step away. Call on ArborTrue for all your freeze and frost recovery."