Six months later, the sage and myrtle are dead, one rosemary came close but is still hanging on, and one lavender’s fate is up in the air.These plants are three feet from each other, in the same box.Above: Before planting, I had to tear out the existing dead plants in the window box and remove the dry dirt.I used the weeder to re-punch the holes so excess water could drain.Then one day, it finally occurred to me that the myrtle had not turned some weird seasonal color: it was dead.Then the lavender went.But–and here’s the weird part–only one of my lavender plants looked dead.At the other end of the box, my other lavender plant was fine. .
How to Get Rid of Lavender in Your Lawn
| Garden.It’s important to get stolons out as well, because new plants rise from thickened places on them, called growth nodes.Pull as many stolons as you can find. .
I read an article the other day which claimed that lavender is immune to disease, a quality that is linked to its healing properties.I'm the first to hop in a bath infused with lavender when I need a break and I am certain that the relaxation it gives me is good for my mental health if nothing else.Close inspection of the affected plants (you may need a magnifying glass) will reveal very small black shapes called pycnidia emerging from the bark.If the soil around lavender's roots is too wet, especially over winter, rot sets in and the bark begins to die.The chances of coming across Shab or Alfa Mosaic Virus are pretty slim and my bet is that you will never have a problem with them. .
Wait to prune lavender or it might kill plant
I have not pruned them before.Unpruned lavenders become woody at the center and do not bloom nearly as much as ones that have been pruned properly so summer pruning every year is important.Ideally right after first bloom in the summer so that it has time to regrow before frost.This type doesn't do well with heavy pruning and responds best to a light pruning after bloom.These shrubs bloom later than the English lavender, and shrubs have a longer flower spike than the English types, but they're not as hardy.Never prune this type back to the woody part of the shrub or you might kill the plant.If your plant is this type of lavender, and it's three years old or older and has never been pruned, it may not survive heavy pruning. .
How to Prune Lavender
Prune for healthier lavender plants.How to prune new lavender plants.Lavender grows quickly, so by the second year, the plant should be about twice as big and ready for pruning once the blooms are spent (or cut blooms while they're still fresh and make a luxurious lavender sugar scrub!).Step-by-step lavender pruning.Find the woody base of your lavender plant - that's the spot where soft green growth meets woody stem.Follow the stem 2 to 3 inches up from the woody part of the stem that's marked on the illustration and remove the rest.To keep your lavender growing in a tidy mounded habit prune lavender stems like the illustration shows with the outside stems lower than the middle.Lavender pruning "Don'ts".Don't cut back to the woody stems - they won't regrow very well, if at all. .
What can kill lavender?
can dead lavender come back?Whiteflies.Whiteflies feed on plant sap, and while their presence may not kill your lavender plant, they can cause damage that is unattractive. .
Your Bee-Friendly Garden May Be Killing Bees—and Here's What to
Scientists and environmental activists have urged people to plant bee-friendly gardens to create safe havens for the pollinators that have experienced a mass die-off over the past decade because of suspected pesticide contamination, disease, and poor nutrition.Now a new study finds that big-box retailers are selling plants and seeds contaminated with neonicotinoids (neonics), a class of agricultural pesticide implicated in the death of 10 million beehives in the United States since 2006.Friends of the Earth and the Pesticide Research Institute collected and tested plant samples from Walmart, Lowe’s, Home Depot, and other garden stores in 18 cities across the U.S. and Canada.Neonic-treated nursery seeds and plants pose the biggest threat to native bees, such as bumblebees, that frequent suburban backyards rather than to commercial honeybees that pollinate big agricultural crops.Neonics and another systemic insecticide called fipronil have become pervasive in the environment over the past 20 years and now account for 40 percent of the global pesticide market, according to another new study.Report coauthor Timothy Brown, a scientist with the Pesticide Research Institute in Berkeley, Calif., said in an email that collecting sufficiently large pollen samples from nursery plants to test for neonics was simply too expensive.So that leaves it up to gardeners to scrutinize seed packages for neonics’ active ingredients, the most common of which are acetamiprid, clothianidin, imidacloprid, thiamethoxam, and dinotefuran. .