To Do in the Garden: August 2024

By Gary Crispell, NC State Master GardenerSM volunteer of Durham County

(Image credit: Pixabay)

And it’s August.  And it rained the entire month of July (11.83” in my rain gauge), so the grass has grown out before I can clean the mower and put it away.  The weeds…well. They’re being weeds.  The Accidental Cottage Garden (ACG) is a mostly perennial garden full of domesticated weeds.  It took a hit in June from the lack of rain.  There are real weeds out there to be pulled, but there are also Olympic Games to be enjoyed.  Weeds will still be there after the Olympics.  Fortunately, I can type between events or else this calendar might have to wait until after the Olympics, too.

No?  I must do it now?  Sigh… Okay.  If you insist.  In a minute.

Gold Metal winners in the ACG. Despite drought followed by record rainfall, it’s a two-way tie for first place between the black-eyed Susans and coreopsis. (Image credit: Gary Crispell)

As mentioned above, the ACG (what’s left of it) is rather pleased with the month of rain.  There are ten genera in bloom right now.  The coreopsis (C. lanceolata) doesn’t know quit nor do the black-eyed Susans (Rudbeckia hirta).  Both have persisted through drought and deluge to keep the yellow going.  Gold medals for them.  Silver for the longest bloom time goes to the Dakota mock vervain (Glandularia bipinnatatifida) whose dainty purple flowers can get lost amongst the taller species, and the foliage is dainty and of great interest, too.  Bronze is awarded to the purple cone flower (Echinacea purpurea).  I know, with a tie for gold there shouldn’t be a bronze.  You award medals your way, and I’ll do it mine.

Longest bloom-time catapults Dakota mock vervain into the Silver Medal position, while the perennial and hardy favorite purple cone flower comes in strong earning the Bronze. (Image credit: Gary Crispell)

Moving on to the honorable mentions; The gallardia (G. pulchella), balloon flower (Platycodon grandiflorus) (Doing a re-bloom after timely removal of old blooms), daylily (Hemerocallis x August Flame), evening primrose (Oenothera lamarckiana), and the two reseeding annuals, French marigold (Tagetes patula) and zinnia (Zinna elegans) all deserve this honor.

Hard to believe that these beauties are representing the Honorable Mention category: the daylily ‘August Flame’ is true to its name while the balloon flower seems nearly ever-blooming. (Image credit: Gary Crispell)

Calendar?  What calendar?  We already discussed this.  There are Olympic Games to watch.  Team USA to cheer on, and you want a calendar.  Sheesh.  Well, I did say I’d do it, so if you really want to go out in the heat here are many things to keep you sweat-covered and happy.

Lawn Care

Look for signs of grubs—smallish patches of yellowing or brown turf.  Dig around in one of them and if you find a grub treat the whole lawn with an appropriate insecticide.

Late in the month, prepare any areas that need seeding with cool season grass seed (tall fescue/bluegrass).

Fertilizing

Give strawberries a dose of nitrogen fertilizer.

DO NOT (as in DON’T) fertilize any trees or shrubs until the weather turns cold and stays that way for a while.

Planting

So, you like to start your own plants from seed?  Here’s an opportunity for you.  Sow flats of pansies now to be transplanted in late September.

Perennials such as hollyhocks (Alcea rosea), delphiniums (D. elatum), and Stokes asters (Stoksia laevis) can be direct seeded now for a bloom show next year.

Repot some house plants.

Plant a fall garden of beets, cabbages, cucumbers, kale, kohlrabi, lettuce, mustard, radishes, squash, turnips, and rutabagas or some combination thereof.

Pruning

No!  Except in case of emergency (hurricanes and severe thunderstorms) do not remove any pruning equipment from its storage facility until late November.

Spraying

See “SPRAYING” for July.  The same sap sucking little…critters—spider mites on coniferous evergreens, lace bugs on azaleas and pyracantha, and aphids on everything else.

Continue with rose, fruit tree, and bunch grape spray programs.

Check cruciferous vegetables (broccoli, cabbages, cauliflower) for worms and look for borers on squash.

Spray only when necessary.  Always identify the pest and apply the proper pesticide.

Always read the label and follow the instructions.

Propagation

Cuttings can still be taken from shrubs.

More Things for August Heat Lovers to do Outside

Update your landscape plan to include changes you intend to make this fall.

Harvest Irish potatoes.

Start composting or turn the pile.

Go to a baseball game.

Hydrate and take breaks from the heat.

It’ll be fall before we know it.  

Resources and Additional Information

Learn more about starting plants from seeds

https://extension.uga.edu/publications/detail.html?number=B1432&title=starting-plants-from-seed-for-the-home-gardener

Tackle repotting houseplants with this handy factsheet

https://wayne.ces.ncsu.edu/2022/04/repotting-houseplants

Find great tips on fall veggie gardening–and gardening all year round– on our former blog post

Article Short Link https://wp.me/p2nIr1-4TZ

July: To Do in the Garden

by Gary Crispell, EMGV

Alright, y’all. It’s July. This is the Piedmont of North Carolina. ‘Nuff said. Except … we’re gardeners and we must garden! Heat? Humidity? It’s all just more stuff to keep our horticultural minds busy. Does a fungus love heat and humidity? Yes it does. Does your water bill go through the roof trying to keep stuff alive just so it can drown in the next thunderstorm? Probably. Can you keep up with the aphid, spider mite and lacebug outbreaks? Hopefully!

But wait. Remember the 70-degree days we enjoyed in February? Can’t get that in New Hampshire or New York or Nebraska or North Dakota, or a whole host of other states. Then think ahead to October.  Will we worry about snow then? Will our growing season have ended? Nope! Sure it’s hot and humid now, but we can escape to the sea for a breeze or to the mountains for some cooler temps. Yessirree, give me North Carolina every time, thank you very much. Now let’s go out in the yard and be grateful.

Lawn Care
Fertilize warm season grasses (Bermuda, Zoysia and St. Augustine) if you haven’t already. When mowing these lawns remove one-third of the growth. Change directions with each mowing to strengthen root systems and expose different side of the blades to sunlight.

Fertilizing
Continue side-dressing your vegetable garden plants. July is the last time to fertilize landscape plants until next year.

This is an excellent time to take soil samples especially from your lawn. Sample boxes and instructions can be obtained from the extension office.  It is a FREE service until November.

Planting
Veggies that can still be planted include Brussels sprouts, collards, beans, carrots, tomatoes and pumpkins.

A young Brussels sprout plant, ‘Long Island Improved,’ one of three varieties that perform satisfactorily in N.C.  The others are Jade Cross E Hybrid and Royal Marvel. About 85 to 95 days are required from field seeding or transplanting to maturity.

Get ready for the fall garden by starting broccoli, cabbage and cauliflower plants to be transplanted in mid-August.

July is also a good time to transplant overgrown houseplants.

Pruning
– “Bleeder” trees like maple, dogwood, birch and elm can be pruned this month.

– Overgrown hedges can be pruned.

– Coniferous evergreens (they make cones with seeds in them) can be pruned.

– Raspberry and blackberry fruiting canes can be cut to the ground following harvest.

– Rhododendrons, azaleas (I know that’s redundant) and blueberries can have the dieback removed.

– Keep garden mums pinched until mid-month.

– Remove faded blooms on perennials to encourage a second blooming.

Spraying
Insects to be watchful for include bag worms, leaf miners, aphids, spider mites and lace bugs. Oh, yeah.  Japanese beetles, duh. Watch tomatoes for signs of blight and spray as necessary. Continue with rose program. Also continue fungicide program for bunch grapes and fruit trees.

Vegetable pests to watch for:  cucumber beetle (cucumber, ironically enough), flea beetle (tomato, eggplant and beans) and aphids (everything).

Only use pesticides when necessary and ALWAYS follow the label instructions.

There’s not too many extra things to do this month unless you want to build cold frames and greenhouses to be ready for next winter. I recommend you kick back on the deck in the evening with a cool beverage and enjoy summer in this goodly state. 

Further Reading
Browse, or search, Horticultural information leaflets from NC State Extension:  https://content.ces.ncsu.edu/catalog/series/73/

Learn more about Brussel sprouts – https://content.ces.ncsu.edu/brussels-sprouts

Photo credit: Downtowngal, no changes made:  https://commons.wikimedia.org/wiki/File:Young_brussels_sprouts_plant.jpg