463 useful answers · Page 9 of 20

Gardening: page 9

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Which kinds of tulips are better choices if I want them to return?

Look at Darwin hybrids, Fosteriana tulips and suitable species tulips rather than assuming every modern tulip performs equally well for years. Species types are often smaller and can naturalize in the right conditions. Match the selection to your climate and soil. Even a variety described as perennial needs a suitable site; the label is not a guarantee of indefinite flowering.

How can I keep eastern red columbine growing when individual plants are short-lived?

Allow some seed to mature and leave suitable places for seedlings instead of removing every spent flower. Eastern red columbine can renew a planting through self-seeding. If sowing collected seed, follow cold-moist treatment guidance or use appropriate fall sowing. Nearby columbines can cross, so seedlings are not a reliable way to reproduce every named cultivar exactly.

What makes winding white trails inside columbine leaves?

Those pale tunnels are a typical sign of columbine leafminers feeding between the leaf surfaces. The damage is usually cosmetic rather than a reason to treat an otherwise healthy plant with insecticide. Removing affected leaves early can reduce the visible problem. Distinguish these enclosed trails from foliage being eaten away, which suggests a different feeding insect.

Why were my columbine leaves suddenly stripped in spring?

Columbine sawfly larvae can chew away much of the foliage, unlike leafminers that leave winding tunnels inside intact leaves. Inspect the plant to identify the culprit before choosing any treatment. Otherwise healthy columbines often regrow leaves within a few weeks. A dramatic-looking feeding episode does not necessarily mean the perennial needs to be dug out and discarded.

Will liatris grown from seed flower in its first summer?

Often it will not. Wisconsin Extension notes that seed-grown plants generally bloom in their second or third year. Cold, moist treatment can improve germination, but it does not turn young seedlings into mature flowering plants immediately. Label the planting and allow time for establishment. Divisions preserve the characteristics of a named variety more reliably than seed.

Should I bury ageratum seeds deeply when starting them indoors?

No. Light helps ageratum germinate, so surface sow or cover only very lightly as the seed instructions direct. Start indoors roughly eight to ten weeks before your expected last spring frost, then harden the seedlings before planting outside after frost risk has passed. Avoid turning a recommendation for a light covering into a deep planting hole.

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    Use clean trays with drainage and appropriate seed-starting medium. Remove or vent covers as the seed instructions require.

Do I need to remove the brown flower heads from ageratum?

Most varieties retain their faded brown heads, so deadheading can improve appearance and help prolong the display. Some newer varieties are self-cleaning and need less attention; check the cultivar description. Remove spent flowers carefully without cutting off nearby developing buds. Ageratum remains frost tender, so deadheading alone will not keep it alive through freezing weather.

How do I remove sticky sap from hedge-trimmer blades?

Switch off and isolate the tool before handling the blades, and wear sturdy gloves and eye protection. Brush away loose plant material, then use the manufacturer-approved blade cleaner or resin solvent according to its directions. Keep fingers away from cutting edges. If distributing lubricant requires briefly running the tool, first clear the work area and follow the prescribed operating procedure.

Source checks for these answers: September 22, 2026. Product instructions and local requirements can vary.