Indiana Yard and Garden – Purdue Consumer Horticulture A Purdue Extension Service for Home Gardeners

Category: Summer

Dividing iris

Whether you’re looking to expand your planting of iris or just need to rejuvenate an older planting, late summer through early fall is a good time to lift and divide iris. Dividing every three to five years will help rejuvenate the planting, and encourage more blossoms for the subsequent years. Most iris plants spread by means of underground stems called rhizomes. Rhizomes become too crowded over time, resulting in reduced flowering. By lifting and dividing…Read more about Dividing iris[Read More]

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Blueberry damage could be plum curculio, Reduced production of strawberries

Q.  I have a few blueberry bushes planted in the backyard, and they’ve done well until last year. They started getting brown spots almost like a bite (see attached photo). No evidence of a pest and sprayed them with Sevin just in case. But that did not stop the browning, and most of the late season berries could not be eaten. Unfortunately, they appear to be starting that again this year already. Please advise and thank…Read more about Blueberry damage could be plum curculio, Reduced production of strawberries[Read More]

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Gardeners reminded to protect pollinators

Pollinators are all the “buzz” these days with a federal proclamation designating June 19-25 as National Pollinator Week. Now in its tenth year, the focus of this designation by the U.S. Departments of Agriculture and the Interior is to promote the health of pollinators, so critical to food and ecosystems. It may surprise you to learn that the honeybee is native to Europe and was introduced to the U.S. But there are also numerous other…Read more about Gardeners reminded to protect pollinators[Read More]

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Mystery plant, and challenging plant woes

Q.  I bought this plant from a nursery about a year ago. On and off, I’ve been trying to identify it with various online plant identification sites, but I haven’t had much luck. Could you take a look and tell me what you think? – R.E., Tippecanoe County A.  I believe your plant is one of the succulents belonging to the genus Kalanchoe. Because this genus is so diverse and numerous, it is difficult to…Read more about Mystery plant, and challenging plant woes[Read More]

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Three new vegetables chosen for All-America Selections 2017

Three exciting new vegetables were chosen as All-America Selections (AAS) winners for 2017, based on superior performance in test gardens throughout the country. Okra: “Candle Fire” was chosen for its unique pods — round rather than ribbed — and for its color, a brighter red than the reddish-burgundy okras currently available. The judges gave it high marks for productivity, taste, texture and tenderness, as well as for the ornamental value of red pods on red stems….Read more about Three new vegetables chosen for All-America Selections 2017[Read More]

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Large wounds in tuliptrees not likely to heal

Large wounds in tuliptrees not likely to heal Q) I’ve attached a photo of one of my trees. I’m concerned that the tree will not heal, and if it does will be too weakened. Also, you gave me a contact for a state arborist last time we visited. I have lost that info. – G.F., Jeffersonville, Indiana A) Looks like perhaps this was storm-related damage? Tuliptrees are somewhat weak-wooded and can be susceptible to limb…Read more about Large wounds in tuliptrees not likely to heal[Read More]

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Humble hosta

If you’re looking for a plant that is winter-hardy throughout the Midwest, excels under shady conditions and has fabulous foliage as well as attractive flowers, then hosta is the plant for you. Also known as plantain lily, hosta performs best in partial to full shade, although some have been able to survive full sun conditions if given a cool environment with plenty of moisture. The leaves will tend to burn or turn sickly yellow if…Read more about Humble hosta[Read More]

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Bid farewell to asparagus and rhubarb season

Reluctantly, it is time to see the end of this year’s asparagus and rhubarb harvest. Because of their perennial growth habit, asparagus and rhubarb must be given a chance to rebuild food reserves so that a bumper crop can be produced again next year. A good rule of thumb is to stop harvesting about the middle of June. In the case of asparagus, this allows the spears to produce tall, fern-like growth. Often, asparagus plants…Read more about Bid farewell to asparagus and rhubarb season[Read More]

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Beware of black cherry toxicity; it’s weedy, too

Beware of black cherry toxicity; it’s weedy, too Q. Was wondering if you could identify what species of tree this is from the photo? – RLW, Galveston, IN A. This is black cherry, known botanically as Prunus serotina. This is a large, fast-growing native tree that can become quite weedy due to prolific fruit that is prized by birds and other wildlife. The foliage and twigs can be toxic when eaten by livestock and pets….Read more about Beware of black cherry toxicity; it’s weedy, too[Read More]

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When Tree Roots Surface

Much to the dismay of homeowners, landscape trees sometimes grow roots on top of the surface of the lawn or possibly even buckle sidewalks and driveways. These surface roots can be quite a nuisance to lawn mowers and human feet. There are several reasons why the roots come to the surface. Some tree species are more prone to surface roots than others, most notably silver maple, poplar and willow. But almost any large, older tree…Read more about When Tree Roots Surface[Read More]

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Page last modified: October 3, 2016

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