Chives, Garlic Chives, Onion Chives, Garlic Scapes – Which One Do You have?

There is a lot of confusion out there about various chives and garlics. Identifying one from the other is actually quite simple, until we add other alliums to the list, then it can become very complicated. In this post I will look at the common ones and provide a simple way to correctly identify your plant. I’ll also include some cultural information.

Allium Globemaster in the authors garden, by Robert Pavlis
Allium Globemaster in the authors garden, by Robert Pavlis

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Allium thunbergii โ€˜Ozawa’

Allium thunbergii 'Ozawa', by Robert Pavlis

The last plant to start flowering in my zone 5 garden is ย Allium thunbergii โ€˜Ozawaโ€™, the Japanese onion. As I write this it is October 26, 2014 and we have not had a real hard frost yet which is very unusual. Most common fall flowering plants like mums are finished flowering but the Japanese onion is still going strong. It is not bothered by early frost or snow.

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Dictamnus albus

Dictamnus albus, by Robert Pavlis

Dictamnus albus, the gas plant, always makes a big splash in the garden when it is flowering and even when it is not flowering it is a very interesting plant with good leaf structure. ย Even the star-shaped seed heads are interesting. So why is this plant not seen more in gardens? It is very slow growing and I think it costs nurseries too much to get it to a saleable size. Fashions have also changed and this fantastic plant has been left behind in favor of more modern plants. That is a real shame since few garden plants will match the presence of a mature Dictamnus.

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Planting Perennials the Right Way

Planting perennials may seem easy but there is more to it than you realize. Planting correctly will ensure larger and healthier plants in the long term.

Acanthus hungaricus - planting perennials the right way, by Robert Pavlis
Acanthus hungaricus with 60 flower spikes – planting perennials the right way, by Robert Pavlis

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Growing Subshrubs Like Lavender and Russian Sage

Go into any nursery and try to find lavenderย and Russian sage; they will be in the perennialย section. Check these plants online or in books, and most sources will tell you they are perennials. Lavender and Russian sage are subshrubs, a fancy name for a small shrub. Once you understand they are NOT perennials, they become easy to grow.

Lavender - a common subshrub
Lavender – a common subshrub

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Do Houseplants Increase Oxygen Levels?

Indoor plants have a great reputation for purifying the air in our homes. In Air Purifying Plants – Do They Work?,ย  I debunked the idea that houseplants remove VOCs (toxic chemicals) from our home – it is just a well publicized myth. Several people commenting on that post and the post called A Garden Myth is Born – Plants Don’t Purify Air, to make the point that plants do more than remove chemicals – indoor plants increase oxygen levels in the air. This increased oxygen contributes a lot to our well being – or so people claim. Do houseplants increase oxygen levels in the home?

House plants don't increase oxygen levels in the home.
House plants don’t increase oxygen levels in the home.

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Walnuts, Juglone and Allelopathy

The common statement “nothing grows under walnut trees” is not true. “Walnuts produce juglone” is not entirely true either. “You need to compost walnut wood chips before using them in the garden” is false. “The allelopathic properties of walnuts are well understood” – not true.

This is a popular subject that is routinely discussed and written about, but the truth around walnut trees is anything but clear.

Black Walnut - Walnuts, Juglone and Allelopathy
Black Walnut – Walnuts, Juglone and Allelopathy

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Growing Under Walnut Trees

There is a very common myth that says, “nothing grows under walnut trees”, but that is far from being true. If you have walnut trees in your yard or the neighbors yard, you can still have a very lush garden and grow most things.

Gardening Under Walnut Trees, Garden of Phil Reilly
Gardening Under Walnut Trees, Phil Reilly’s Garden

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Yucca glauca

Yucca glauca, by Robert Pavlis
Yucca glauca, by Robert Pavlis

Yucca glauca, an agave, is the hardiest yucca growing from Alberta, Canada all the way to Texas. You will either love or hate this plant depending on your appetite for desert-like plants. I love them for their spiky leaves and fantastic flowers. They are extremely drought tolerant and easy to grow.

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Paeonia rockii

Paeonia rockii, from seed by Robert Pavlis
Paeonia rockii, from seed by Robert Pavlis

Paeonia rockii is a lovely tree peony that should be grown more. It can be difficult to find in a nursery, but those specializing in peonies will have it. The ones pictured here were grown from seed obtained from the Ontario Rock Garden Society Seedex program. The flowers are mostly white or light pink with dark maroon basal flares on the petals. There is some variation in flower form and coloration. One seedling from this group has red leaves in early summer.

The common name, tree peony, describes the woody stems that are produced, but it is probably more correct to call these shrubs, not trees. ย They do not need staking.

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Hardy and Tropical Water Lilies for Ponds 101

Water lilies (Nymphaea species) are extremely valuable to the pond. They not only look great and flower well, but the floating leaves provide shade, eliminating the light needed by algae. They also provide a hiding place for fish and other water creatures. Water lilies should cover half of the open water space to help maintain a balanced ecosystem. They do best in quiet water, so keep them away from fountains and waterfalls.

Water lily pond at Longwood Gardens, by Robert Pavlis
Water lily pond at Longwood Gardens, by Robert Pavlis

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Sunscald on Trees – Prevention

It might surprise you to learn that trees do get sunscald or sunburn and the remedy is not an SPF 30 lotion. Sunscald on trees usually happens on the south or south-west exposed bark. The bark is damaged and in severe cases can result in the death of the tree.

Historically, sunscald has been prevented by wrapping or painting the trunk of the tree. Do these preventative methods work? Are they still recommended? Time to have a closer look at the problem.

sunscald on sugar maple tree, prevention, by Robert Pavlis
Sunscald on a sugar maple tree, by Robert Pavlis

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