BEGIN:VCALENDAR VERSION:2.0 PRODID:-//Root & Wire//Care calendar//EN CALSCALE:GREGORIAN METHOD:PUBLISH X-WR-CALNAME:Chinese elm bonsai care BEGIN:VEVENT UID:rw-care-chinese-elm-jan@rootandwire.com DTSTAMP:20261102T000000Z DTSTART;VALUE=DATE:20260101 RRULE:FREQ=YEARLY SUMMARY:Chinese elm: January DESCRIPTION:Outdoors: the tree is bare and dormant\; keep the pot from fr eezing solid by moving it under cover below about -5 °C\, and check it is not bone dry on a sunny day. Indoors: a cool\, bright sill\, water on ly when the surface is dry. Basis (rhs): RHS: Ulmus parvifolia\, https:/ /www.rhs.org.uk/plants/21508/ulmus-parvifolia/details (H7 in the ground) \; RHS advice: overwintering container plants (pot roots are less hardy than the tree) https://rootandwire.com/bonsai/care/chinese-elm/ URL:https://rootandwire.com/bonsai/care/chinese-elm/ END:VEVENT BEGIN:VEVENT UID:rw-care-chinese-elm-feb@rootandwire.com DTSTAMP:20261102T000000Z DTSTART;VALUE=DATE:20260201 RRULE:FREQ=YEARLY SUMMARY:Chinese elm: February DESCRIPTION:Buds begin to swell late in the month. Prepare the repotting kit. Indoors\, the tree may drop and replace old leaves now\; that is no rmal if the new buds are green. Wipe scale off the twigs while they are bare. Basis (practice): general bonsai practice for deciduous trees in l ate winter https://rootandwire.com/bonsai/care/chinese-elm/ URL:https://rootandwire.com/bonsai/care/chinese-elm/ END:VEVENT BEGIN:VEVENT UID:rw-care-chinese-elm-mar@rootandwire.com DTSTAMP:20261102T000000Z DTSTART;VALUE=DATE:20260301 RRULE:FREQ=YEARLY SUMMARY:Chinese elm: March DESCRIPTION:Repot as the buds swell and before they open\, every two year s young and three or four later: roots back by about a third\, into a fr ee-draining mix\, water well\, keep out of frost for a fortnight. Struct ural pruning of larger branches is done now\, before the sap rises fully . Basis (reference): Harry Harrington\, bonsai4me.com species guide: Ulm us parvifolia\; Peter Chan\, Bonsai Masterclass (repotting deciduous tre es at bud swell) https://rootandwire.com/bonsai/care/chinese-elm/ URL:https://rootandwire.com/bonsai/care/chinese-elm/ END:VEVENT BEGIN:VEVENT UID:rw-care-chinese-elm-apr@rootandwire.com DTSTAMP:20261102T000000Z DTSTART;VALUE=DATE:20260401 RRULE:FREQ=YEARLY SUMMARY:Chinese elm: April DESCRIPTION:The spring flush. Start feeding fortnightly once the first le aves have hardened. Let shoots extend to six or eight leaves\, then cut back to two or three. An indoor tree moves outside at the end of the mon th in a mild year\, after the last frost in your area. Basis (practice): general bonsai practice (clip-and-grow on elms)\; last-frost timing fro m RHS advice: frost protection https://rootandwire.com/bonsai/care/chine se-elm/ URL:https://rootandwire.com/bonsai/care/chinese-elm/ END:VEVENT BEGIN:VEVENT UID:rw-care-chinese-elm-may@rootandwire.com DTSTAMP:20261102T000000Z DTSTART;VALUE=DATE:20260501 RRULE:FREQ=YEARLY SUMMARY:Chinese elm: May DESCRIPTION:Keep pruning shoots back as they extend\, which is what build s the fine twigging. Wire young shoots while green\; check it monthly\, the bark marks fast. Water daily in a warm spell outdoors. Watch for aph ids on the soft growth. Basis (reference): Bonsai Empire species guide: Chinese elm\; RHS advice: aphids https://rootandwire.com/bonsai/care/chi nese-elm/ URL:https://rootandwire.com/bonsai/care/chinese-elm/ END:VEVENT BEGIN:VEVENT UID:rw-care-chinese-elm-jun@rootandwire.com DTSTAMP:20261102T000000Z DTSTART;VALUE=DATE:20260601 RRULE:FREQ=YEARLY SUMMARY:Chinese elm: June DESCRIPTION:As May. A strong\, healthy tree can be partly defoliated now to reduce leaf size and let light into the crown\; leave the weak and th e recently repotted alone. Feed fortnightly. Basis (reference): Harry Ha rrington\, bonsai4me.com: defoliation (healthy deciduous trees in early summer)\; Peter Warren\, Bonsai (DK) https://rootandwire.com/bonsai/care /chinese-elm/ URL:https://rootandwire.com/bonsai/care/chinese-elm/ END:VEVENT BEGIN:VEVENT UID:rw-care-chinese-elm-jul@rootandwire.com DTSTAMP:20261102T000000Z DTSTART;VALUE=DATE:20260701 RRULE:FREQ=YEARLY SUMMARY:Chinese elm: July DESCRIPTION:Peak growth. Prune extended shoots back to two or three leave s\, pinch the leader so it does not thicken out of proportion. Never let the pot dry out in a heatwave: morning and evening checks. Elm leaf bee tle larvae\, if any\, are picked off. Basis (practice): general bonsai p ractice for summer maintenance of deciduous trees https://rootandwire.co m/bonsai/care/chinese-elm/ URL:https://rootandwire.com/bonsai/care/chinese-elm/ END:VEVENT BEGIN:VEVENT UID:rw-care-chinese-elm-aug@rootandwire.com DTSTAMP:20261102T000000Z DTSTART;VALUE=DATE:20260801 RRULE:FREQ=YEARLY SUMMARY:Chinese elm: August DESCRIPTION:Last pruning of the year by the end of the month so new growt h can harden before autumn. Remove wire that is starting to bite. Keep f eeding\, moving to a lower-nitrogen feed late in the month. Basis (pract ice): general bonsai practice\; the switch to a low-nitrogen autumn feed is common UK practice\, not a measured rule https://rootandwire.com/bon sai/care/chinese-elm/ URL:https://rootandwire.com/bonsai/care/chinese-elm/ END:VEVENT BEGIN:VEVENT UID:rw-care-chinese-elm-sep@rootandwire.com DTSTAMP:20261102T000000Z DTSTART;VALUE=DATE:20260901 RRULE:FREQ=YEARLY SUMMARY:Chinese elm: September DESCRIPTION:An indoor tree comes back to its cool sill before the first c ool nights\, usually early to mid September. Outdoor trees stay out. Fee d with a low-nitrogen feed to harden the wood. No more pruning or wiring . Basis (estimate): the move-in date is our judgement from average first cool nights for England\; autumn feeding from general practice https:// rootandwire.com/bonsai/care/chinese-elm/ URL:https://rootandwire.com/bonsai/care/chinese-elm/ END:VEVENT BEGIN:VEVENT UID:rw-care-chinese-elm-oct@rootandwire.com DTSTAMP:20261102T000000Z DTSTART;VALUE=DATE:20261001 RRULE:FREQ=YEARLY SUMMARY:Chinese elm: October DESCRIPTION:Outdoors the leaves begin to turn and drop late in the month\ ; clear fallen leaves from the pot surface to stop fungus overwintering. Stop feeding. Reduce watering as the tree slows. Indoors\, water less a s the light drops. Basis (practice): general bonsai practice\; leaf hygi ene from RHS advice: leaf spot https://rootandwire.com/bonsai/care/chine se-elm/ URL:https://rootandwire.com/bonsai/care/chinese-elm/ END:VEVENT BEGIN:VEVENT UID:rw-care-chinese-elm-nov@rootandwire.com DTSTAMP:20261102T000000Z DTSTART;VALUE=DATE:20261101 RRULE:FREQ=YEARLY SUMMARY:Chinese elm: November DESCRIPTION:Outdoor trees drop their last leaves and show their winter si lhouette\; this is the month to study the branch structure and plan wint er pruning. Move the tree to a sheltered spot out of the wind. Indoors\, a cool bright sill and sparing water. Basis (practice): general bonsai practice for deciduous trees entering dormancy https://rootandwire.com/b onsai/care/chinese-elm/ URL:https://rootandwire.com/bonsai/care/chinese-elm/ END:VEVENT BEGIN:VEVENT UID:rw-care-chinese-elm-dec@rootandwire.com DTSTAMP:20261102T000000Z DTSTART;VALUE=DATE:20261201 RRULE:FREQ=YEARLY SUMMARY:Chinese elm: December DESCRIPTION:Fully dormant outdoors. Protect from hard frost under cover\; a cold frame or unheated shed is ideal\, a heated room is not. Check fo r dryness on dry windy days. Indoors\, as November\; do nothing but wate r correctly. Basis (rhs): RHS advice: overwintering container plants (fr ost protection for pot-grown roots)\; RHS: Ulmus parvifolia (H7 (in the ground\; about H4 in a pot)) https://rootandwire.com/bonsai/care/chinese -elm/ URL:https://rootandwire.com/bonsai/care/chinese-elm/ END:VEVENT END:VCALENDAR