Rosie Lerner

rosie@purdue.edu

716 articles by this author

Posts List

Timing of hydrangea pruning varies by species

Q: Attached is a photo of our current hydrangea plant in front of our house. Should I cut it back now or leave it alone until spring? Or do you think it’s a lost plant? – R.G., Henry County, Indiana A: A number of hydrangea species are grown in Indiana. The proper time of pruning depends on the species. Your photo appears to be Hydrangea quercifolia, more commonly known as oakleaf hydrangea, one of our…Read more about Timing of hydrangea pruning varies by species[Read More]

 Categories:

Snow Is Good for Gardens

Though your aching back may not agree, recent heavy snows actually will be good for your garden and landscape. Snow provides moisture as well as protection from cold and wind. Snow is an excellent insulator against low temperatures and excessive winds. The extent of protection depends on the depth of snow. In addition, the soil gives off some heat so that the temperature at the soil surface can be much warmer than the air temperature….Read more about Snow Is Good for Gardens[Read More]

 Categories:

Pretty ground cover? Probably a weed

Q: I’m having an argument with my wife about a plant in our yard, and we hope you can help arbitrate. I’ve sent a photo of a plant that we found growing near some shrubs. Neither of us remember planting it. My wife thinks it’s pretty ground cover and that we should let it stay. I think it’s a weed and that we should get it out of there before it takes over the whole…Read more about Pretty ground cover? Probably a weed[Read More]

 Categories:

Pollinators are abuzz for the 2019 Perennial of the Year

By selecting Stachys officinalis ‘Hummelo’ as its 2019 Perennial Plant of the Year, the Perennial Plant Association once again continued its focus on pollinator-friendly plants. ‘Hummelo’ is a compact, clump-forming perennial, reaching 1.5 to 2 feet tall and wide. Over time, the plants will form a dense mat, spreading slowly from creeping underground stems. Showy magenta flower spikes rise well above the foliage in midsummer and are quite attractive to butterflies and other pollinators. Plants are hardy in…Read more about Pollinators are abuzz for the 2019 Perennial of the Year[Read More]

 Categories:

In The Grow Question and Answer – High winds can be tough on trees

Q. Can you tell me what kind of tree this is? They were planted near our community lake 25 years ago. K.M., Indianapolis A. This is a honey locust tree, known botanically as Gleditsia triacanthos. The species is native to the eastern US. It has large seed pods and trunks that are armed with wicked thorns. Fortunately, most plants sold for landscape specimens are cultivars that are both seedless and thornless. But even these improved…Read more about In The Grow Question and Answer – High winds can be tough on trees[Read More]

 Categories:

Spice Up Your Holidays

Some of the most popular spices used this time of year are harvested from various parts of exotic tropical plants, lending a special flavor to holiday recipes. Ginger is harvested from the rhizomes (underground stems) of a tropical/sub-tropical herbaceous plant, Zingiber officinale. Ginger is native to tropical Asia and is grown commercially in Hawaii and many other countries, including China, India, Thailand and Brazil. The rhizomes are harvested after the first year of the plant’s…Read more about Spice Up Your Holidays[Read More]

 Categories:

Gardeners worn down; clearweed may be culprit

Q: I have had a garden on our property for about 14 years. Naturally, we’ve always had to deal with weeds, but until last year they had been the usual crabgrass and other types that could be controlled if you kept ahead of them. But last year, some type of weed or ground cover has sprung up, and it’s infuriating!! There is absolutely no way to weed it out by hand because it comes up almost…Read more about Gardeners worn down; clearweed may be culprit[Read More]

 Categories:

New Resource for Identifying Common Yard and Garden Plants

Want to know more about common yard and garden plants? Meet the new Purdue Plant ID Pal. The web-based resource is easy to use. 4-H and FFA youth will find it especially helpful as they learn to identify ornamentals, fruits, and vegetables for local, state and national competitions. Purdue Plant ID Pal has four sections: ornamentals (woody plants) flowers and indoor plants fruits and nuts vegetables You’ll find more than 850 photos of nearly 200…Read more about New Resource for Identifying Common Yard and Garden Plants[Read More]

 Categories:

Pussy willow shrubs can thrive in well-drained soil

Q: I am writing about a pussy willow tree I planted in my backyard in early August 2018. I have wanted one for some time and found one on sale at a discount department store. It didn’t have much info on what it takes to grow by ponds or lakes. So, if you could give me any information, it would be appreciated. A: A number of willow shrub species are commonly called pussy willows, so…Read more about Pussy willow shrubs can thrive in well-drained soil[Read More]

 Categories:

Time to Harvest Sweet Potatoes

  Although some folks may be sad to see summer coming to a close, many gardeners are looking forward to harvesting their sweet potato treasures. Sweet potatoes are warm-season plants that are very sensitive to cold temperatures. The tuberous roots should be harvested by the time frost kills the vines or soon thereafter. Sweet potato roots continue to grow until frost kills the vines. Roots can be left in the ground for a short while;…Read more about Time to Harvest Sweet Potatoes[Read More]

 Categories: