I just purchased a few of each of these from the nursery and would like help on how to grow them successfully in my garden in Houston, TX. (zone 9a). The information I've found online is a little confusing. Are these annuals or perennials, part-sun or full-sun, grow in the ground or in pots, etc.? The flowers are beautiful and I'd love to be able to have these as a staple in my garden! Any advice is welcome!
These varieties are both part of the species Rudbeckia hirta. It seems that Denver daisies and Indian Summer daisies are perennials in zone 9a, but each plant may live for only a few seasons. Allowing them to self-seed will help them remain a part of your garden for longer. Either partial or full sun should work, and they should be happy in pots or in the ground.
mine are 2 seasons old, had them last season so started to spray Malathion on as soon as buds became visible...ha...didn't work. they (flowers) were literally destroyed. What can I do to prevent all this next season? SJ
I have a natural remedy that works for a broad range of insect/bacterial/fungal issues. Best of all... It is safe, and effective. You can use this at any time without the concern for the safety of plants, animals, and children.
The recipe is as follows: First, you will want to prime the soil with dolomitic lime, then spread wettable sulfur to Kill off any infection in the soil. I Also like to spray the plant itself. Mix a few drops of one or more of these ingredients into warm water with a spoonful of coconut oil: Rosemary oil, lavender oil, neem oil, garlic oil, cinnamon extract/oil and for really bad cases, also add clove oil.
When and how far back should I prune my daisies or should I prune them at all?
Most people dead-head shasta daisies to encourage more bloom. This clump-forming plant does not need pruning, per se, but may benefit from division every few years. This gives you the chance to discard old, non-productive growth and work some compost into the soil. At the end of the flowering season, cut all stems down to the basal leaves. Leave the bottom leaves intact and they will provide some winter protection. Oxeye or field daisies, Leucanthemum vulgare, is invasive in the US and should not be grown. There are other types of daisies. Check out this website's pages on daisies: https://www.gardeningknowhow.com/search/?q=daisy%20care
I have numerous flower beds scattered among numerous walnut trees
You can try, but there are potential obstacles for plant health under these conditions:
2. competition for water and nutrients
3. allelopathy (toxicity from substance in walnut for other plants.
Do I plant the stems now?
I have been thinking about your Montauk daisies with no roots. I wonder if you mean they are "bare root" plants and not "no root" ones. Bare root plants are dormant plants with no leaves but they have roots. They are great for fall planting. If this is what you have, and I certainly hope so, it is easy to plant them. Soak the roots in warm water for 30 minutes, longer if they seem dry and inflexible. They are then planted out as you would any other plant. Water and mulch with 3-4 inches this first winter. You will see signs of growth next year as the soil starts to warm. https://www.gardeningknowhow.com/garden-how-to/propagation/propgen/bare-root-planting.htm
I wish I had a picture to go from! It sounds like you received a floral bouquet of nippon daisies. They will not survive if planted. Something appears to have gone amiss with your order. Please contact the sender for instructions or refund. You can try to take stem cuttings and root them in water or better yet, in moist sand or potting mix. You don't give your ag zone but for most of us up north, fall planting time has passed with a few exceptions. Montauk daisies go dormant with the first freeze. Here is information on stem cuttings: https://www.gardeningknowhow.com/garden-how-to/projects/rooting-plant-cuttings.htm
Group of daisies were cut back to knee high after blooming faded. Thru the fall they maintained basal foliage but most of the lower stalks dried slowl. Some however put out a growth of leaves and strange looking root like clumps about 12 to 18 inches up the cut off stalks. Question---Can I remove these growths from the stalks and plant them and expect to grow a new daisy plant?
There is a way to do this, but it is very difficult for this plant. They are better divided by division or seed.
There is no harm in attempting, but don't be disappointed if they fail. These will likely come back on their own next year with no help over winter.
The Montauk Daisy continues to grow, and grow and finally blooms in September. If I prune it in the summer months of June, or July, will it still flower in the Fall?
I would be extra careful doing this. I would only cut it back after the flowers have died back to prevent damage to the flowering process. This article will help: https://www.gardeningknowhow.com/ornamental/flowers/montauk-daisy/growing-montauk-daisies.htm