I'm not sure where you read that planting under a tree would kill it - it is simply not true! Trees growing in the natural environment routinely have other, smaller plants growing under them. Even in heavy forests, there is always undergrowth! As Ken stated, raising the soil level under existing trees can be harmful but in virtually all cases, underplanting them at the same soil level is not an issue. Some trees dislike much disruption in their root zone (Japanese maples for example) so it is best to plant things that will grow happily without the need for division or replanting. And other trees have such aggressive root systems that it is a challenge to get things to thrive within the spread of their canopy or even further. But most trees are very happy with accompanying shrubs or perennials and groundcovers in close proximity. In a small urban or suburban lot, I dislike trees planted plunk in the middle of the lawn. They have no sense of place and look like after thoughts. Plus lawn up to the base of a tree can be a hindrance to successful establishment, not to mention the potential for string trimmer or mower disasters. A good sized bed with complimentary underplantings give trees context and anchor them into the landscape.

Ok, I have to say I agree with the original post. This has actually been on my mind a lot this week - one of my magazines came in the mail and it had an article on poisonous plants that really freaked me out. I have foxglove everywhere - it grows naturally all over my 5 acres and has self seeded extensively in the gardens right by my house, deck, patios, etc. I always knew it was toxic but kept it because it's so darn pretty, but then I read that ONE NIBBLE of ANY part of the plant would kill an adult. I had no idea - I'd pictured an upset stomach at worst. I have a young toddler who is very well parented, well taught, and constantly watched, and yet he is still a toddler. If you have ever had one, especially a busy one like mine, you know that no amount of teaching can guarantee that a very small child won't put something in his mouth. If my son is feeling especially rambunctious he might pop a rock in his mouth just to vex me. What if he popped a leaf in his mouth? I'm pulling them all out during his naps this week. It's a huge job, but I don't want the risk. Anyhow, I would have appreciated a little disclaimer somewhere letting me know just how dangerous these plants are... I guess I didn't buy them, but all the same... Happy gardening!

i was also thinking what mikeann said above ... the plant that has babies on the leaf edge ... it is very common ... in the plant world.. that young seedlings.. need to mature.. before they look like older plants ... BTW .. i hope there are drain holes in that plastic cup ... it looks awful wet for a near succulent plant ... the stain around the edge of the media says as much to me .... ken https://www.google.com/search?q=Mother+of+Millions&source=lnms&tbm=isch&sa=X&ved=0CAgQ_AUoAmoVChMI85iGt4fbxwIVQgeSCh0D0Q1_&biw=889&bih=745&dpr=0.9#tbm=isch&q=mother+of+millions+kalanchoe

My purple coneflowers & zinnias are just now going out. My hummers are gone and the robins are starting to come in. I am just above you living in the woods next to Fort Rucker. Visit us over on the butterfly forum