July is when lantana either settles in and behaves like a polite little bedding plant, or it takes off and becomes the kind of cheerful, flower-covered groundcover that makes a whole yard look brighter from the road. I’ve grown a good many heat-loving plants over the years out here in the country, and lantana has earned its keep more than once. When the sun is high, the gravel drive is shimmering, and a lot of tender flowers are sulking by midafternoon, lantana keeps right on blooming like it has something to prove.
If you want that spreading, mounding, color-pouring effect by late summer and into fall, July is the month to help it along. This is not the time for neglect, but it also isn’t complicated if you know what matters most. I’m going to walk you through the jobs I’d do right now, from trimming and watering to feeding, spacing, and keeping an eye on pests, so your lantana can fill in bare ground and make a real show of itself.
1. Start by identifying what kind of lantana you actually have
Before you do anything else, take a close look at the variety. Not all lantana spreads the same way. Some grow upright in tidy clumps 18 to 30 inches tall and nearly as wide, while trailing or spreading varieties can stretch 3 to 6 feet across in one season under warm conditions. If your goal is groundcover, this matters.
Read the plant tag if you still have it, or measure what the plant is doing now. A lantana already sending stems outward horizontally is a better candidate for quick groundcover than one growing straight up like a little shrub. In my experience, trailing forms fill bare spots much faster, especially when planted along borders, sunny banks, mailbox beds, or the edge of a walkway where the heat reflects back on them.
2. Give it a hard look at sunlight and move containers if needed
Lantana wants full sun, and in July that means at least 6 hours a day, though 8 or more is even better. If it’s getting only morning light and shade by noon, it may stay green but won’t spread or bloom with the same enthusiasm. Flowers will be fewer, stems will be longer and thinner, and the plant won’t make that dense, carpet-like growth most folks are after.
If your lantana is in pots, this is an easy fix. Move the container to the brightest, hottest, sunniest place you’ve got, as long as it still gets enough water. If it’s in the ground, trim back nearby annuals or any flopping perennials shading it. I’ve seen one overgrown clump of petunias steal enough light to make a lantana underperform all through midsummer.
3. Trim leggy growth to force branching and side spread
July is an excellent time to pinch or lightly shear lanky stems. This feels backward to some gardeners because the plant is blooming, but a careful trim encourages branching lower down, and more branching means a fuller plant that spreads outward instead of simply reaching. Use clean hand pruners or garden snips and take off about 1 to 3 inches from stems that are outpacing the rest of the mound.
Don’t scalp the whole plant down to stubs in peak summer heat. What you want is shaping, not punishment. Remove the longest, most awkward stems first, then step back and look at the overall form. In a week or two, you should start to see fresh side shoots. My mother used to say some plants need a little talking to, and lantana seems to respond best when that talking to comes with sensible pruning.
4. Water deeply, but stop babying it with frequent shallow drinks
Lantana is drought tolerant once established, but “drought tolerant” is not the same thing as “grows fast with no water.” In July, if you want active spread, give it a deep soaking instead of a daily sprinkle. Aim for about 1 inch of water per week in the ground, and closer to 1 1/2 inches during stretches of extreme heat above 90 degrees, especially in sandy soil.
That usually means watering long enough to moisten the top 6 to 8 inches of soil. A shallow sprinkle only wets the surface and trains roots to stay near the top, where they dry out fast. For containers, check daily because pots can dry out in a single hot afternoon. Water until it runs from the drainage holes, then let the top inch of soil dry before watering again.
5. Feed lightly, because too much fertilizer makes soft growth and fewer flowers
This is one of the big mistakes I see. Folks think more fertilizer means more flowers, but with lantana it often means a lot of leafy growth and not nearly enough bloom. In July, if your plant is pale or slow, use a light feeding only. A balanced fertilizer such as 10-10-10 or 5-10-5 works well, but apply at half the label rate.
For in-ground plants, a small handful scattered around the drip line is often enough for a mature plant, followed by a deep watering. For containers, a diluted liquid fertilizer every 2 to 3 weeks can help keep blooms coming. Avoid heavy doses of high nitrogen lawn fertilizer drifting into the bed. I’ve had lantana planted near a fertilized lawn grow big and floppy, with far fewer flower clusters than the same variety planted in leaner soil.
6. Deadhead selectively to keep blooming energy going
Lantana will often continue blooming without constant deadheading, which is one reason busy gardeners love it. Still, in July, removing faded flower clusters can help tidy the plant and redirect energy into new buds, especially on younger plants that you’re trying to bulk up. Snip the spent cluster back to the next leaf node or side shoot rather than just plucking petals.
You do not have to deadhead every bloom on a large planting. I’d focus on the front edge and any stems you’re already shaping. A 10-minute cleanup every 5 to 7 days is enough to make a difference. It’s one of those little chores that pays you back more than you’d think, much like shelling peas on the porch used to feel slow until you saw supper come together.
7. Mulch properly, but keep the crown clear
A 2-inch layer of mulch around lantana can help the soil stay evenly moist, reduce weed competition, and keep the roots cooler during severe July heat. Pine bark fines, shredded bark, or clean straw all work well. In my own beds, I prefer a fine bark mulch because it stays put better in summer storms and doesn’t mat down as quickly.
Keep the mulch 2 to 3 inches away from the plant crown. If you pile mulch right against the stems, you can trap moisture where it shouldn’t sit, and that raises the risk of rot. Spread the mulch out to where you want the plant to root and expand, especially if you're training it to cover open soil between stones, along a slope, or at the front of a sunny border.
8. Pull weeds now so lantana does not have to compete
July weeds are no joke. Crabgrass, spurge, pigweed, and volunteer vines can crowd a young lantana before you realize what’s happening. If the plant is spending its energy competing for light, water, and root space, it will not spread as quickly or bloom as heavily.
Hand-pull weeds after a rain or after watering, when the soil is soft enough to get the roots out cleanly. Be especially careful around young lantana because its surface roots can be disturbed if you go jabbing around with a hoe. I’d rather spend 15 minutes once a week weeding gently than let a patch get away from me and spend an hour undoing the damage later.
9. Guide the stems where you want coverage instead of letting them tangle
If your lantana is the trailing kind, July is the time to direct it. Gently fan stems outward into bare spaces rather than allowing all the growth to pile up in the center. You can use small landscape pins, bent wire staples, or even a forked twig to hold a wandering stem in place temporarily if needed.
This sounds fussy, but it truly helps create a more even groundcover. Once side shoots begin along those outward-facing stems, the plant fills in more naturally. On a sunny bank or border edge, I’ll often check every week and redirect anything crossing back over itself. Think of it like braiding a child’s hair loosely rather than letting it knot up in the wind.
10. Watch closely for root rot, especially in heavy soil
Lantana loves heat, but it does not love soggy feet. In clay-heavy ground or low spots that stay wet after summer storms, roots can struggle. If the plant looks wilted even when the soil is moist, or if stems yellow from the base and feel soft, drainage may be the trouble rather than thirst.
In that case, hold off on extra water and improve air flow around the plant. If you’re growing lantana in a spot where water stands more than 24 hours after rain, consider lifting and replanting it on a small mound 4 to 6 inches high. I’ve learned the hard way that no amount of good intentions can make a sun-loving plant happy in a puddle.
11. Check for whiteflies, lace bugs, and spider mites before they slow growth
Lantana is sturdy, but midsummer pests can still sap its strength. Turn over a few leaves and look for tiny white insects fluttering up, fine webbing, pale stippling, or leaves looking dusty and faded. Heat plus dry stress can make spider mites especially likely. Whiteflies tend to gather on the undersides of leaves and can multiply quickly in still, hot weather.
A sharp spray of water in the morning can knock back light infestations. If the problem continues, insecticidal soap can help, but spray early or late in the day when temperatures are lower, ideally below 85 degrees, to avoid stressing the plant further. Always coat the underside of the leaves where pests hide. A healthy, well-watered lantana bounces back much better than one already struggling.
12. Take cuttings now if you want a larger drift by late summer
If you’ve got one thriving lantana and dream of a wider sweep of color, July is a fine time to root cuttings. Snip 4- to 6-inch nonflowering stem tips, remove the lower leaves, and place them in a small pot filled with a light mix such as half potting soil and half perlite or coarse sand. Keep them bright but out of harsh all-day direct sun until they root.
Most cuttings root in about 2 to 4 weeks if kept lightly moist, not soggy. Once they show new growth, you can pot them on or tuck them into warm garden soil if your season is long enough. This is one of the most satisfying ways to stretch a planting budget. Around here, that sort of thrift is practically a family tradition.
13. Space new plants close enough to knit together, but not so tight they smother each other
If you are adding more lantana in July to create a fuller groundcover, spacing matters. For compact forms, plant them 12 to 18 inches apart. For trailing or spreading varieties, 18 to 24 inches is often right. In rich soil with strong sun and regular water, some vigorous types will close those gaps surprisingly fast.
Planting too close may look instantly full, but it can create poor air circulation and encourage disease or uneven growth later. I’d rather see a little bare mulch for 3 weeks and know the plants will mature properly than crowd them shoulder to shoulder like church supper chairs in a storm shelter.
14. Keep expectations realistic if you garden in a cooler zone
In the warmest parts of the country, lantana can spread rapidly and act almost like a shrub or perennial groundcover. In cooler regions, it may behave more like an annual that needs every bit of July heat to do its best work. That doesn’t mean you can’t get a beautiful spread, only that you may need to support it with steadier watering, reflected heat from stone or concrete, and the sunniest site you can provide.
If nights are still dipping below 60 degrees in your area, growth may be slower than it would be farther south. Once nighttime warmth settles in, lantana usually picks up speed. I’ve always admired plants that wait patiently for their proper moment. Lantana is one of those, and once summer truly arrives, it rarely wastes time.
15. Plan for the color show ahead, not just the plant in front of you today
By late July, it helps to look at your lantana with August and September in mind. Ask yourself where you want the color to land. Do you need it to soften a hard edge, spill over a retaining wall, cover the front of a dry bed, or tie together other hot-weather bloomers like zinnias, marigolds, salvia, or verbena? Small adjustments now can make the whole planting look intentional in another month.
This is one of the pleasures of gardening at my age. You begin to understand that beauty is often a matter of timing and gentle guidance. If you give lantana the sun it craves, trim it wisely, water it deeply, and keep it from being crowded or overfed, July can be the turning point. By the time summer starts leaning toward fall, you may have the kind of glowing, spreading carpet of color that makes you slow down every time you walk past it.