ORANGE COUNTY, Fla. -- The start of Casey Anthony's murder trial could be as long as a year away. There are many things, legally and in the investigation, that still need to be completed.

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VIDEO REPORT: Casey Trial Start May Be Year Away

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Eyewitness News believes evidence discovered where Caylee's remains were found and at her house are still being tested. According to defense expert Dr. Henry Lee's writings, Casey's defense team could be going so far as to analyze the root growth of plants to determine how long Caylee's body was there.

Investigators spent more than a week at the scene where Caylee Anthony's remains were found, sifting through the dirt by hand. One of the things they found was a heart-shaped sticker that investigators said matched up to adhesive found on the duct tape over her mouth.

Investigators had bug and plant experts at the scene, too, to help determine how long Caylee was there and where else her body had been. Boxes of evidence were removed from her house less than a mile away using two different search warrants based on what was found at the scene.

Once the testing of the evidence is done, the defense will go into research and attack mode.

"The integrity of it, the testing of it, the conclusions that were drawn by the testing, the credentials of the prosecution experts as opposed to the defense experts," explained WFTV legal analyst Bill Sheaffer.

Sheaffer told Eyewitness News the defense will probably hold hearings to convince the judge to throw out a lot of the most damning evidence.

There are about 145 witnesses listed so far, including Casey's family members. Only five of them, including Casey's ex-boyfriend who she spent the night with the day Caylee disappeared, have been only partially deposed by the defense.

"For every hour that you spend in trial you spend potentially ten hours in preparation," Sheaffer said.

Someone recently left a SpongeBob SquarePants balloon at the remains scene, possibly after George Anthony's touching story about how she loved to imitate his sidekick Patrick with her raspy voice.

When WFTV's news crew arrived at the remains scene Wednesday afternoon, there were 11 people at the memorial paying their respects to Caylee.

EMOTIONAL MEMORIAL HELD FOR CAYLEE ANTHONY

Hundreds of mourners remembered slain Florida toddler Caylee Anthony in a music-filled service Tuesday, months after her mysterious disappearance inspired dozens of volunteers to search for her body before and after her mother was charged with killing her.

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UNEDITED MEMORIAL: Part 1 | Part 2 | Part 3 | Part 4
MEMORIAL CLIPS: Anthonys Speak | Caylee Video | Dove Release
IMAGES: Inside Memorial Service | Mourners Arrive
MEMORIAL PROGRAM: Read Program For Caylee Memorial
TEAM COVERAGE: Emotional Memorial For Caylee

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"There are days you don't know what to say and these are one of these days," said Pastor David Uth, who offered a "prayer of peace" for Casey Anthony, who was in the Orange County Jail less than a mile away, facing a first-degree murder charge. She has pleaded not guilty and claims a baby sitter kidnapped Caylee.

Images of the girl, who was 2 when she disappeared, flashed on a giant screen in front of the First Baptist Church of Orlando sanctuary as a pianist played, "You Are My Sunshine" and "If You're Happy and You Know It." A video montage of her jumping on a bed and dressed like an Easter bunny ended the service.

Casey Anthony could have asked for permission to watch the memorial broadcast live on TV but didn't, according to jail officials. The 22-year-old said in a statement read by her attorney that she missed Caylee "every day and every minute of every day" (read full statement | watch Baez read).

Casey Anthony's parents, George and Cindy, who arranged the public service, urged mourners to support their daughter.

"It breaks my heart today that Casey isn't here today to honor her child who she loved so much," Cindy Anthony said during the eulogy. "Casey, I hope you're listening to this. I wish I could comfort you. I wish I could take away your pain and wipe away your tears."

Thousands of mourners had been expected, but only several hundred people showed up, including many who never knew Caylee or her family. They included Jessica Smith, who drove 160 miles from West Palm Beach with a co-worker to attend, saying she felt compelled to be there "to say our prayers for her."

"I'm a mother myself," said Smith, 25, who has a son Caylee's age. "It touches close to home."

Caylee disappeared in June, but her mother didn't report her missing until a month later, telling authorities she was looking for her. Caylee's remains were found in December in woods near her home, about two months after prosecutors brought charges against her mother.

Casey Anthony also said in her statement that she wished the service would have been private and not open to the public and media.

"I still don't want a public event with cameras and everybody around for Caylee's service, but I can't stop my parents from doing what they want," she said. "I truly hope that it will help them."

George Anthony, who was hospitalized last month over concerns he was suicidal, said his daughter deserved love and letters of support while she was in jail.

"I miss my daughter, Casey," George Anthony said. "Do not form judgments because I tell you, you do not want to be in any of our shoes."

Casey Anthony's brother asked people who know how Caylee died to come forward.

"To those of us who have the knowledge and the means to facilitate the answers that my family deserves I ask that you fill your heart with compassion and truth," Lee Anthony said during the eulogy.

Security was tight, given that the Anthony family had faced protesters at their house before the daughter was arrested. A dozen deputies were stationed at the church and mourners had to pass through a metal detector to get into the sanctuary. No protesters showed up.

Some mourners said they felt a connection to Caylee since they had been following the case since she was reported missing.

"I had hoped she would have been found alive," said Justine Lorence, 22, who drove up with Smith from West Palm Beach. "I feel like I have to pay my respects to her because I've been watching this from the start."